./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:45:29,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:45:29,699 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:45:29,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:45:29,733 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:45:29,735 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:45:29,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:45:29,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:45:29,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:45:29,743 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:45:29,744 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:45:29,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:45:29,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:45:29,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:45:29,748 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:45:29,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:45:29,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:45:29,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:45:29,754 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:45:29,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:45:29,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:45:29,758 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:45:29,759 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:45:29,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:45:29,765 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:45:29,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:45:29,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:45:29,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:45:29,767 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:45:29,768 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:45:29,769 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:45:29,769 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:45:29,771 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:45:29,771 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:45:29,772 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:45:29,772 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:45:29,772 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:45:29,772 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:45:29,773 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:45:29,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:45:29,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:45:29,775 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:45:29,803 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:45:29,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:45:29,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:45:29,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:45:29,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:45:29,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:45:29,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:45:29,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:45:29,806 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:45:29,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:45:29,807 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:45:29,807 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:45:29,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:45:29,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:45:29,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:45:29,807 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:45:29,808 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:45:29,808 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:45:29,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:45:29,808 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:45:29,808 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:45:29,808 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:45:29,808 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:45:29,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:45:29,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:45:29,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:45:29,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:45:29,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:45:29,809 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:45:29,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:45:29,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:45:29,810 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:45:29,810 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:45:29,810 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:45:29,810 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ca8ac8d2a0a0bfcebfb7f99229747142c166641dd0f1bf091ac2b4ae67e9ee75 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:45:30,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:45:30,063 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:45:30,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:45:30,065 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:45:30,065 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:45:30,066 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-09-01 00:45:31,005 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:45:31,211 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:45:31,211 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-09-01 00:45:31,223 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfd25a021/d72f633d176343888b051e5936ec6f76/FLAGbaebb40b6 [2023-09-01 00:45:31,231 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cfd25a021/d72f633d176343888b051e5936ec6f76 [2023-09-01 00:45:31,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:45:31,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:45:31,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:45:31,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:45:31,237 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:45:31,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:45:31" (1/1) ... [2023-09-01 00:45:31,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6635aa57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:31, skipping insertion in model container [2023-09-01 00:45:31,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:45:31" (1/1) ... [2023-09-01 00:45:31,242 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:45:31,267 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:45:31,450 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_60-invariant_racefree.i[30176,30189] [2023-09-01 00:45:31,469 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:45:31,481 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:45:31,526 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_60-invariant_racefree.i[30176,30189] [2023-09-01 00:45:31,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:45:31,609 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:45:31,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:31 WrapperNode [2023-09-01 00:45:31,610 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:45:31,611 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:45:31,611 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:45:31,611 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:45:31,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:31" (1/1) ... [2023-09-01 00:45:31,636 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:31" (1/1) ... [2023-09-01 00:45:31,658 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 141 [2023-09-01 00:45:31,658 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:45:31,659 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:45:31,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:45:31,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:45:31,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:31" (1/1) ... [2023-09-01 00:45:31,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:31" (1/1) ... [2023-09-01 00:45:31,678 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:31" (1/1) ... [2023-09-01 00:45:31,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:31" (1/1) ... [2023-09-01 00:45:31,688 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:31" (1/1) ... [2023-09-01 00:45:31,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:31" (1/1) ... [2023-09-01 00:45:31,698 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:31" (1/1) ... [2023-09-01 00:45:31,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:31" (1/1) ... [2023-09-01 00:45:31,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:45:31,707 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:45:31,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:45:31,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:45:31,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:31" (1/1) ... [2023-09-01 00:45:31,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:45:31,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:45:31,732 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 00:45:31,747 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 00:45:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:45:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:45:31,762 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:45:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:45:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:45:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:45:31,763 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:45:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:45:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:45:31,763 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:45:31,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:45:31,764 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:45:31,890 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:45:31,891 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:45:32,037 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:45:32,042 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:45:32,042 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-09-01 00:45:32,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:45:32 BoogieIcfgContainer [2023-09-01 00:45:32,044 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:45:32,045 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:45:32,045 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:45:32,047 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:45:32,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:45:31" (1/3) ... [2023-09-01 00:45:32,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274c9e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:45:32, skipping insertion in model container [2023-09-01 00:45:32,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:45:31" (2/3) ... [2023-09-01 00:45:32,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@274c9e43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:45:32, skipping insertion in model container [2023-09-01 00:45:32,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:45:32" (3/3) ... [2023-09-01 00:45:32,049 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-09-01 00:45:32,059 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:45:32,059 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-09-01 00:45:32,059 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:45:32,095 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:45:32,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 146 transitions, 300 flow [2023-09-01 00:45:32,158 INFO L130 PetriNetUnfolder]: 33/208 cut-off events. [2023-09-01 00:45:32,159 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:45:32,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 208 events. 33/208 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 719 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 112. Up to 6 conditions per place. [2023-09-01 00:45:32,165 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 146 transitions, 300 flow [2023-09-01 00:45:32,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 141 transitions, 287 flow [2023-09-01 00:45:32,170 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:32,176 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 141 transitions, 287 flow [2023-09-01 00:45:32,177 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 141 transitions, 287 flow [2023-09-01 00:45:32,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 141 transitions, 287 flow [2023-09-01 00:45:32,221 INFO L130 PetriNetUnfolder]: 32/203 cut-off events. [2023-09-01 00:45:32,222 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:45:32,225 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208 conditions, 203 events. 32/203 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 704 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 112. Up to 6 conditions per place. [2023-09-01 00:45:32,228 INFO L119 LiptonReduction]: Number of co-enabled transitions 6120 [2023-09-01 00:45:34,307 INFO L134 LiptonReduction]: Checked pairs total: 16134 [2023-09-01 00:45:34,307 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-09-01 00:45:34,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:34,320 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;@46e814f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:34,321 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:34,325 INFO L130 PetriNetUnfolder]: 8/48 cut-off events. [2023-09-01 00:45:34,325 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:45:34,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:34,326 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:45:34,326 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:34,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:34,330 INFO L85 PathProgramCache]: Analyzing trace with hash -491560360, now seen corresponding path program 1 times [2023-09-01 00:45:34,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:34,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982453675] [2023-09-01 00:45:34,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:34,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:34,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:34,457 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:34,458 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:34,459 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:34,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:45:34,461 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:34,462 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:34,463 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:34,463 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:45:34,485 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:45:34,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 193 transitions, 404 flow [2023-09-01 00:45:34,545 INFO L130 PetriNetUnfolder]: 57/346 cut-off events. [2023-09-01 00:45:34,545 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:45:34,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 346 events. 57/346 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1350 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 210. Up to 9 conditions per place. [2023-09-01 00:45:34,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 193 transitions, 404 flow [2023-09-01 00:45:34,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 193 transitions, 404 flow [2023-09-01 00:45:34,551 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:34,552 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 193 transitions, 404 flow [2023-09-01 00:45:34,552 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 193 transitions, 404 flow [2023-09-01 00:45:34,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 193 transitions, 404 flow [2023-09-01 00:45:34,580 INFO L130 PetriNetUnfolder]: 57/346 cut-off events. [2023-09-01 00:45:34,581 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:45:34,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 360 conditions, 346 events. 57/346 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1350 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 210. Up to 9 conditions per place. [2023-09-01 00:45:34,592 INFO L119 LiptonReduction]: Number of co-enabled transitions 17280 [2023-09-01 00:45:36,650 INFO L134 LiptonReduction]: Checked pairs total: 49329 [2023-09-01 00:45:36,650 INFO L136 LiptonReduction]: Total number of compositions: 137 [2023-09-01 00:45:36,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:36,653 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;@46e814f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:36,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:36,658 INFO L130 PetriNetUnfolder]: 27/114 cut-off events. [2023-09-01 00:45:36,658 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 00:45:36,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:36,658 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:45:36,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:36,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:36,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1036641911, now seen corresponding path program 1 times [2023-09-01 00:45:36,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:36,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007939240] [2023-09-01 00:45:36,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:36,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:36,694 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:36,711 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:36,712 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:36,712 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:36,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:45:36,712 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:36,713 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:36,713 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:36,713 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:45:36,727 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:45:36,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 240 transitions, 510 flow [2023-09-01 00:45:36,763 INFO L130 PetriNetUnfolder]: 86/525 cut-off events. [2023-09-01 00:45:36,763 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:45:36,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 525 events. 86/525 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2178 event pairs, 1 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 354. Up to 16 conditions per place. [2023-09-01 00:45:36,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 240 transitions, 510 flow [2023-09-01 00:45:36,770 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 240 transitions, 510 flow [2023-09-01 00:45:36,770 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:36,770 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 240 transitions, 510 flow [2023-09-01 00:45:36,771 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 240 transitions, 510 flow [2023-09-01 00:45:36,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 240 transitions, 510 flow [2023-09-01 00:45:36,819 INFO L130 PetriNetUnfolder]: 86/525 cut-off events. [2023-09-01 00:45:36,819 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:45:36,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 525 events. 86/525 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2178 event pairs, 1 based on Foata normal form. 0/396 useless extension candidates. Maximal degree in co-relation 354. Up to 16 conditions per place. [2023-09-01 00:45:36,833 INFO L119 LiptonReduction]: Number of co-enabled transitions 32400 [2023-09-01 00:45:39,119 INFO L134 LiptonReduction]: Checked pairs total: 98746 [2023-09-01 00:45:39,120 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-09-01 00:45:39,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:39,122 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;@46e814f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:39,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:39,132 INFO L130 PetriNetUnfolder]: 43/176 cut-off events. [2023-09-01 00:45:39,132 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 00:45:39,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:39,132 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:45:39,133 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:39,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:39,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1499857399, now seen corresponding path program 1 times [2023-09-01 00:45:39,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:39,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228422068] [2023-09-01 00:45:39,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:39,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:39,157 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:39,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:39,176 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:39,177 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:39,177 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:39,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:45:39,177 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:39,178 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:39,178 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:39,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:45:39,209 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:45:39,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 287 transitions, 618 flow [2023-09-01 00:45:39,283 INFO L130 PetriNetUnfolder]: 127/788 cut-off events. [2023-09-01 00:45:39,284 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:45:39,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 788 events. 127/788 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3604 event pairs, 6 based on Foata normal form. 0/594 useless extension candidates. Maximal degree in co-relation 545. Up to 32 conditions per place. [2023-09-01 00:45:39,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 287 transitions, 618 flow [2023-09-01 00:45:39,296 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 241 places, 287 transitions, 618 flow [2023-09-01 00:45:39,296 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:39,296 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 241 places, 287 transitions, 618 flow [2023-09-01 00:45:39,297 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 241 places, 287 transitions, 618 flow [2023-09-01 00:45:39,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 287 transitions, 618 flow [2023-09-01 00:45:39,368 INFO L130 PetriNetUnfolder]: 127/788 cut-off events. [2023-09-01 00:45:39,368 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:45:39,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 843 conditions, 788 events. 127/788 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3604 event pairs, 6 based on Foata normal form. 0/594 useless extension candidates. Maximal degree in co-relation 545. Up to 32 conditions per place. [2023-09-01 00:45:39,387 INFO L119 LiptonReduction]: Number of co-enabled transitions 51840 [2023-09-01 00:45:41,910 INFO L134 LiptonReduction]: Checked pairs total: 186129 [2023-09-01 00:45:41,910 INFO L136 LiptonReduction]: Total number of compositions: 201 [2023-09-01 00:45:41,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:41,912 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;@46e814f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:41,913 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:41,926 INFO L130 PetriNetUnfolder]: 66/254 cut-off events. [2023-09-01 00:45:41,926 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-09-01 00:45:41,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:41,927 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:45:41,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:41,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:41,928 INFO L85 PathProgramCache]: Analyzing trace with hash 782096990, now seen corresponding path program 1 times [2023-09-01 00:45:41,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:41,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937976037] [2023-09-01 00:45:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:41,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:41,981 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:42,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:42,003 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:42,003 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:42,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:45:42,004 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:42,004 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:42,004 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:42,004 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:45:42,027 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:45:42,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 334 transitions, 728 flow [2023-09-01 00:45:42,167 INFO L130 PetriNetUnfolder]: 196/1223 cut-off events. [2023-09-01 00:45:42,167 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:45:42,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 1223 events. 196/1223 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6382 event pairs, 23 based on Foata normal form. 0/924 useless extension candidates. Maximal degree in co-relation 833. Up to 80 conditions per place. [2023-09-01 00:45:42,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 279 places, 334 transitions, 728 flow [2023-09-01 00:45:42,225 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 279 places, 334 transitions, 728 flow [2023-09-01 00:45:42,225 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:42,225 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 334 transitions, 728 flow [2023-09-01 00:45:42,225 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 334 transitions, 728 flow [2023-09-01 00:45:42,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 334 transitions, 728 flow [2023-09-01 00:45:42,358 INFO L130 PetriNetUnfolder]: 196/1223 cut-off events. [2023-09-01 00:45:42,359 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:45:42,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1334 conditions, 1223 events. 196/1223 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 6382 event pairs, 23 based on Foata normal form. 0/924 useless extension candidates. Maximal degree in co-relation 833. Up to 80 conditions per place. [2023-09-01 00:45:42,402 INFO L119 LiptonReduction]: Number of co-enabled transitions 75600 [2023-09-01 00:45:44,900 INFO L134 LiptonReduction]: Checked pairs total: 240542 [2023-09-01 00:45:44,900 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-09-01 00:45:44,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:44,902 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;@46e814f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:44,902 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:44,917 INFO L130 PetriNetUnfolder]: 80/321 cut-off events. [2023-09-01 00:45:44,917 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-09-01 00:45:44,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:44,918 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:45:44,918 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:44,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:44,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1175688419, now seen corresponding path program 1 times [2023-09-01 00:45:44,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:44,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052930342] [2023-09-01 00:45:44,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:44,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:44,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:44,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:44,949 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:44,949 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:44,949 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:44,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:45:44,949 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:44,950 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:44,950 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:44,950 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:45:44,971 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:45:44,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 381 transitions, 840 flow [2023-09-01 00:45:45,252 INFO L130 PetriNetUnfolder]: 329/2010 cut-off events. [2023-09-01 00:45:45,252 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:45:45,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 2010 events. 329/2010 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 12509 event pairs, 72 based on Foata normal form. 0/1526 useless extension candidates. Maximal degree in co-relation 1322. Up to 192 conditions per place. [2023-09-01 00:45:45,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 317 places, 381 transitions, 840 flow [2023-09-01 00:45:45,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 317 places, 381 transitions, 840 flow [2023-09-01 00:45:45,288 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:45,288 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 317 places, 381 transitions, 840 flow [2023-09-01 00:45:45,289 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 317 places, 381 transitions, 840 flow [2023-09-01 00:45:45,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 381 transitions, 840 flow [2023-09-01 00:45:45,579 INFO L130 PetriNetUnfolder]: 329/2010 cut-off events. [2023-09-01 00:45:45,580 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:45:45,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 2010 events. 329/2010 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 12509 event pairs, 72 based on Foata normal form. 0/1526 useless extension candidates. Maximal degree in co-relation 1322. Up to 192 conditions per place. [2023-09-01 00:45:45,657 INFO L119 LiptonReduction]: Number of co-enabled transitions 103680 [2023-09-01 00:45:48,566 INFO L134 LiptonReduction]: Checked pairs total: 344099 [2023-09-01 00:45:48,566 INFO L136 LiptonReduction]: Total number of compositions: 265 [2023-09-01 00:45:48,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:48,567 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;@46e814f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:48,568 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:48,591 INFO L130 PetriNetUnfolder]: 104/414 cut-off events. [2023-09-01 00:45:48,591 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-09-01 00:45:48,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:48,591 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:45:48,591 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:48,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:48,592 INFO L85 PathProgramCache]: Analyzing trace with hash 1429797173, now seen corresponding path program 1 times [2023-09-01 00:45:48,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:48,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725638445] [2023-09-01 00:45:48,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:48,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:48,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:48,630 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:48,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:48,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:48,659 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:48,659 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:48,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:45:48,660 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:48,661 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:48,661 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:48,661 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:45:48,685 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:45:48,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 428 transitions, 954 flow [2023-09-01 00:45:49,231 INFO L130 PetriNetUnfolder]: 606/3517 cut-off events. [2023-09-01 00:45:49,231 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:45:49,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4015 conditions, 3517 events. 606/3517 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 25857 event pairs, 201 based on Foata normal form. 0/2688 useless extension candidates. Maximal degree in co-relation 2228. Up to 448 conditions per place. [2023-09-01 00:45:49,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 355 places, 428 transitions, 954 flow [2023-09-01 00:45:49,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 355 places, 428 transitions, 954 flow [2023-09-01 00:45:49,306 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:49,306 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 355 places, 428 transitions, 954 flow [2023-09-01 00:45:49,306 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 355 places, 428 transitions, 954 flow [2023-09-01 00:45:49,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 355 places, 428 transitions, 954 flow [2023-09-01 00:45:49,812 INFO L130 PetriNetUnfolder]: 606/3517 cut-off events. [2023-09-01 00:45:49,812 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:45:49,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4015 conditions, 3517 events. 606/3517 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 25857 event pairs, 201 based on Foata normal form. 0/2688 useless extension candidates. Maximal degree in co-relation 2228. Up to 448 conditions per place. [2023-09-01 00:45:50,045 INFO L119 LiptonReduction]: Number of co-enabled transitions 136080 [2023-09-01 00:45:52,887 INFO L134 LiptonReduction]: Checked pairs total: 450599 [2023-09-01 00:45:52,887 INFO L136 LiptonReduction]: Total number of compositions: 287 [2023-09-01 00:45:52,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:52,889 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;@46e814f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:52,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:52,927 INFO L130 PetriNetUnfolder]: 128/518 cut-off events. [2023-09-01 00:45:52,927 INFO L131 PetriNetUnfolder]: For 113/113 co-relation queries the response was YES. [2023-09-01 00:45:52,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:52,927 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:45:52,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:52,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:52,928 INFO L85 PathProgramCache]: Analyzing trace with hash 865999601, now seen corresponding path program 1 times [2023-09-01 00:45:52,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:52,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214202533] [2023-09-01 00:45:52,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:52,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:52,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:52,970 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:52,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:52,992 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:52,993 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:52,993 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:52,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:45:52,993 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:52,994 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:52,994 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:52,994 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:45:53,017 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:45:53,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 475 transitions, 1070 flow [2023-09-01 00:45:54,139 INFO L130 PetriNetUnfolder]: 1203/6496 cut-off events. [2023-09-01 00:45:54,139 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:45:54,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7581 conditions, 6496 events. 1203/6496 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 56621 event pairs, 522 based on Foata normal form. 0/5002 useless extension candidates. Maximal degree in co-relation 3999. Up to 1024 conditions per place. [2023-09-01 00:45:54,248 INFO L82 GeneralOperation]: Start removeDead. Operand has 393 places, 475 transitions, 1070 flow [2023-09-01 00:45:54,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 393 places, 475 transitions, 1070 flow [2023-09-01 00:45:54,301 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:54,301 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 393 places, 475 transitions, 1070 flow [2023-09-01 00:45:54,302 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 393 places, 475 transitions, 1070 flow [2023-09-01 00:45:54,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 475 transitions, 1070 flow [2023-09-01 00:45:55,345 INFO L130 PetriNetUnfolder]: 1203/6496 cut-off events. [2023-09-01 00:45:55,346 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:45:55,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7581 conditions, 6496 events. 1203/6496 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 56621 event pairs, 522 based on Foata normal form. 0/5002 useless extension candidates. Maximal degree in co-relation 3999. Up to 1024 conditions per place. [2023-09-01 00:45:55,806 INFO L119 LiptonReduction]: Number of co-enabled transitions 172800 [2023-09-01 00:45:59,089 INFO L134 LiptonReduction]: Checked pairs total: 573611 [2023-09-01 00:45:59,089 INFO L136 LiptonReduction]: Total number of compositions: 323 [2023-09-01 00:45:59,090 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:59,091 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;@46e814f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:59,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:59,146 INFO L130 PetriNetUnfolder]: 162/660 cut-off events. [2023-09-01 00:45:59,147 INFO L131 PetriNetUnfolder]: For 177/177 co-relation queries the response was YES. [2023-09-01 00:45:59,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:59,147 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:45:59,147 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:59,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:59,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1919892981, now seen corresponding path program 1 times [2023-09-01 00:45:59,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:59,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822225465] [2023-09-01 00:45:59,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:59,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:59,165 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:59,182 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:59,183 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:59,183 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:59,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:45:59,183 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:59,184 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:59,185 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:59,185 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:45:59,211 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:45:59,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 431 places, 522 transitions, 1188 flow [2023-09-01 00:46:01,916 INFO L130 PetriNetUnfolder]: 2504/12483 cut-off events. [2023-09-01 00:46:01,917 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:46:02,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14860 conditions, 12483 events. 2504/12483 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 126966 event pairs, 1291 based on Foata normal form. 0/9684 useless extension candidates. Maximal degree in co-relation 7563. Up to 2304 conditions per place. [2023-09-01 00:46:02,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 431 places, 522 transitions, 1188 flow [2023-09-01 00:46:02,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 431 places, 522 transitions, 1188 flow [2023-09-01 00:46:02,278 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:46:02,278 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 431 places, 522 transitions, 1188 flow [2023-09-01 00:46:02,279 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 431 places, 522 transitions, 1188 flow [2023-09-01 00:46:02,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 431 places, 522 transitions, 1188 flow [2023-09-01 00:46:04,732 INFO L130 PetriNetUnfolder]: 2504/12483 cut-off events. [2023-09-01 00:46:04,732 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:46:05,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14860 conditions, 12483 events. 2504/12483 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 126966 event pairs, 1291 based on Foata normal form. 0/9684 useless extension candidates. Maximal degree in co-relation 7563. Up to 2304 conditions per place. [2023-09-01 00:46:05,632 INFO L119 LiptonReduction]: Number of co-enabled transitions 213840 [2023-09-01 00:46:08,933 INFO L134 LiptonReduction]: Checked pairs total: 629114 [2023-09-01 00:46:08,933 INFO L136 LiptonReduction]: Total number of compositions: 356 [2023-09-01 00:46:08,934 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:46:08,935 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;@46e814f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:46:08,935 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:46:08,999 INFO L130 PetriNetUnfolder]: 219/865 cut-off events. [2023-09-01 00:46:08,999 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-09-01 00:46:09,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:46:09,000 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:46:09,000 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:46:09,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:46:09,000 INFO L85 PathProgramCache]: Analyzing trace with hash -2142409940, now seen corresponding path program 1 times [2023-09-01 00:46:09,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:46:09,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703794205] [2023-09-01 00:46:09,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:46:09,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:46:09,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:46:09,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:46:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:46:09,051 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:46:09,052 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:46:09,052 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:46:09,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:46:09,052 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:46:09,052 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:46:09,052 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:46:09,053 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:46:09,075 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:46:09,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 469 places, 569 transitions, 1308 flow [2023-09-01 00:46:14,374 INFO L130 PetriNetUnfolder]: 5341/24614 cut-off events. [2023-09-01 00:46:14,375 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:46:14,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29820 conditions, 24614 events. 5341/24614 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 281658 event pairs, 3084 based on Foata normal form. 0/19230 useless extension candidates. Maximal degree in co-relation 14840. Up to 5120 conditions per place. [2023-09-01 00:46:14,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 469 places, 569 transitions, 1308 flow [2023-09-01 00:46:15,147 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 469 places, 569 transitions, 1308 flow [2023-09-01 00:46:15,148 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:46:15,148 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 469 places, 569 transitions, 1308 flow [2023-09-01 00:46:15,148 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 469 places, 569 transitions, 1308 flow [2023-09-01 00:46:15,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 469 places, 569 transitions, 1308 flow [2023-09-01 00:46:20,655 INFO L130 PetriNetUnfolder]: 5341/24614 cut-off events. [2023-09-01 00:46:20,655 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:46:21,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29820 conditions, 24614 events. 5341/24614 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 281658 event pairs, 3084 based on Foata normal form. 0/19230 useless extension candidates. Maximal degree in co-relation 14840. Up to 5120 conditions per place. [2023-09-01 00:46:22,436 INFO L119 LiptonReduction]: Number of co-enabled transitions 259200 [2023-09-01 00:46:26,064 INFO L134 LiptonReduction]: Checked pairs total: 867026 [2023-09-01 00:46:26,064 INFO L136 LiptonReduction]: Total number of compositions: 378 [2023-09-01 00:46:26,065 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:46:26,069 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;@46e814f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:46:26,069 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:46:26,182 INFO L130 PetriNetUnfolder]: 291/1128 cut-off events. [2023-09-01 00:46:26,182 INFO L131 PetriNetUnfolder]: For 412/412 co-relation queries the response was YES. [2023-09-01 00:46:26,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:46:26,183 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:46:26,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:46:26,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:46:26,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1378623944, now seen corresponding path program 1 times [2023-09-01 00:46:26,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:46:26,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101513147] [2023-09-01 00:46:26,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:46:26,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:46:26,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:46:26,200 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:46:26,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:46:26,215 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:46:26,216 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:46:26,216 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:46:26,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:46:26,216 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:46:26,216 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:46:26,217 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:46:26,217 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:46:26,245 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:46:26,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 507 places, 616 transitions, 1430 flow [2023-09-01 00:46:38,334 INFO L130 PetriNetUnfolder]: 11506/49289 cut-off events. [2023-09-01 00:46:38,334 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:46:39,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60653 conditions, 49289 events. 11506/49289 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 630424 event pairs, 7181 based on Foata normal form. 0/38760 useless extension candidates. Maximal degree in co-relation 29798. Up to 11264 conditions per place. [2023-09-01 00:46:39,623 INFO L82 GeneralOperation]: Start removeDead. Operand has 507 places, 616 transitions, 1430 flow [2023-09-01 00:46:40,297 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 507 places, 616 transitions, 1430 flow [2023-09-01 00:46:40,297 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:46:40,297 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 507 places, 616 transitions, 1430 flow [2023-09-01 00:46:40,297 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 507 places, 616 transitions, 1430 flow [2023-09-01 00:46:40,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 507 places, 616 transitions, 1430 flow [2023-09-01 00:46:52,200 INFO L130 PetriNetUnfolder]: 11506/49289 cut-off events. [2023-09-01 00:46:52,200 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:46:53,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60653 conditions, 49289 events. 11506/49289 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 630424 event pairs, 7181 based on Foata normal form. 0/38760 useless extension candidates. Maximal degree in co-relation 29798. Up to 11264 conditions per place. [2023-09-01 00:46:56,372 INFO L119 LiptonReduction]: Number of co-enabled transitions 308880 [2023-09-01 00:47:00,073 INFO L134 LiptonReduction]: Checked pairs total: 1039870 [2023-09-01 00:47:00,073 INFO L136 LiptonReduction]: Total number of compositions: 417 [2023-09-01 00:47:00,074 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:47:00,074 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;@46e814f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:47:00,074 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:47:00,207 INFO L130 PetriNetUnfolder]: 400/1502 cut-off events. [2023-09-01 00:47:00,208 INFO L131 PetriNetUnfolder]: For 619/619 co-relation queries the response was YES. [2023-09-01 00:47:00,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:47:00,208 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:47:00,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:47:00,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:47:00,209 INFO L85 PathProgramCache]: Analyzing trace with hash -75839998, now seen corresponding path program 1 times [2023-09-01 00:47:00,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:47:00,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328852003] [2023-09-01 00:47:00,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:47:00,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:47:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:47:00,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:47:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:47:00,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:47:00,241 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:47:00,241 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:47:00,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:47:00,241 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:47:00,241 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:47:00,242 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:47:00,242 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:47:00,267 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:47:00,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 545 places, 663 transitions, 1554 flow [2023-09-01 00:47:27,885 INFO L130 PetriNetUnfolder]: 24839/99564 cut-off events. [2023-09-01 00:47:27,885 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:47:33,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124255 conditions, 99564 events. 24839/99564 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2218. Compared 1399492 event pairs, 16398 based on Foata normal form. 0/78770 useless extension candidates. Maximal degree in co-relation 60631. Up to 24576 conditions per place. [2023-09-01 00:47:33,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 545 places, 663 transitions, 1554 flow [2023-09-01 00:47:34,685 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 545 places, 663 transitions, 1554 flow [2023-09-01 00:47:34,686 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:47:34,686 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 545 places, 663 transitions, 1554 flow [2023-09-01 00:47:34,686 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 545 places, 663 transitions, 1554 flow [2023-09-01 00:47:34,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 545 places, 663 transitions, 1554 flow [2023-09-01 00:48:00,943 INFO L130 PetriNetUnfolder]: 24839/99564 cut-off events. [2023-09-01 00:48:00,944 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:48:06,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124255 conditions, 99564 events. 24839/99564 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2218. Compared 1399492 event pairs, 16398 based on Foata normal form. 0/78770 useless extension candidates. Maximal degree in co-relation 60631. Up to 24576 conditions per place. [2023-09-01 00:48:13,625 INFO L119 LiptonReduction]: Number of co-enabled transitions 362880 [2023-09-01 00:48:17,508 INFO L134 LiptonReduction]: Checked pairs total: 1085139 [2023-09-01 00:48:17,508 INFO L136 LiptonReduction]: Total number of compositions: 439 [2023-09-01 00:48:17,509 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:48:17,509 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;@46e814f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:48:17,510 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:48:17,716 INFO L130 PetriNetUnfolder]: 562/2030 cut-off events. [2023-09-01 00:48:17,716 INFO L131 PetriNetUnfolder]: For 927/927 co-relation queries the response was YES. [2023-09-01 00:48:17,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:48:17,717 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:48:17,717 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:48:17,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:48:17,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1230277278, now seen corresponding path program 1 times [2023-09-01 00:48:17,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:48:17,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987932347] [2023-09-01 00:48:17,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:48:17,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:48:17,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:48:17,740 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:48:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:48:17,766 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:48:17,766 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:48:17,766 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:48:17,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:48:17,766 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:48:17,767 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:48:17,767 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:48:17,767 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:48:17,806 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:48:17,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 583 places, 710 transitions, 1680 flow [2023-09-01 00:49:17,637 INFO L130 PetriNetUnfolder]: 53532/202063 cut-off events. [2023-09-01 00:49:17,638 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:49:34,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255442 conditions, 202063 events. 53532/202063 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4232. Compared 3088118 event pairs, 36879 based on Foata normal form. 0/160764 useless extension candidates. Maximal degree in co-relation 124233. Up to 53248 conditions per place. [2023-09-01 00:49:34,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 583 places, 710 transitions, 1680 flow [2023-09-01 00:49:41,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 583 places, 710 transitions, 1680 flow [2023-09-01 00:49:41,113 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:49:41,113 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 583 places, 710 transitions, 1680 flow [2023-09-01 00:49:41,114 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 583 places, 710 transitions, 1680 flow [2023-09-01 00:49:41,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 583 places, 710 transitions, 1680 flow