./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_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_42-trylock2_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 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 --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 00:43:43,044 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:43:43,045 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:43:43,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:43:43,073 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:43:43,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:43:43,074 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:43:43,076 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:43:43,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:43:43,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:43:43,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:43:43,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:43:43,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:43:43,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:43:43,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:43:43,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:43:43,082 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:43:43,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:43:43,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:43:43,094 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:43:43,095 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:43:43,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:43:43,096 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:43:43,097 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:43:43,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:43:43,099 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:43:43,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:43:43,100 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:43:43,100 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:43:43,101 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:43:43,101 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:43:43,102 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:43:43,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:43:43,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:43:43,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:43:43,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:43:43,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:43:43,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:43:43,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:43:43,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:43:43,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:43:43,106 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:43:43,120 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:43:43,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:43:43,120 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:43:43,120 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:43:43,121 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:43:43,121 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:43:43,121 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:43:43,122 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:43:43,122 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:43:43,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:43:43,123 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:43:43,123 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:43:43,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:43:43,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:43:43,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:43:43,123 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:43:43,124 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:43:43,124 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:43:43,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:43:43,124 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:43:43,124 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:43:43,124 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:43:43,124 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:43:43,125 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:43:43,125 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:43:43,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:43:43,125 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:43:43,125 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:43:43,125 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:43:43,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:43:43,126 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:43:43,126 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:43:43,126 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:43:43,126 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:43:43,126 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 844ba080c7d33529db727776ee230d62edb7b62a6350a8061572438c458d73d3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:43:43,377 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:43:43,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:43:43,392 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:43:43,393 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:43:43,393 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:43:43,394 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-09-01 00:43:44,374 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:43:44,626 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:43:44,627 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-09-01 00:43:44,659 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6872341bb/e32c96be5ad945e58a468d5fb6a4ff80/FLAG6a2e257b5 [2023-09-01 00:43:44,675 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6872341bb/e32c96be5ad945e58a468d5fb6a4ff80 [2023-09-01 00:43:44,678 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:43:44,679 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:43:44,681 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:43:44,681 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:43:44,683 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:43:44,684 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:43:44" (1/1) ... [2023-09-01 00:43:44,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17fb5098 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:43:44, skipping insertion in model container [2023-09-01 00:43:44,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:43:44" (1/1) ... [2023-09-01 00:43:44,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:43:44,730 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:43:44,972 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_42-trylock2_racefree.i[30176,30189] [2023-09-01 00:43:44,996 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:43:45,015 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:43:45,048 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_42-trylock2_racefree.i[30176,30189] [2023-09-01 00:43:45,065 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:43:45,107 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:43:45,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:43:45 WrapperNode [2023-09-01 00:43:45,108 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:43:45,109 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:43:45,109 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:43:45,109 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:43:45,114 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:43:45" (1/1) ... [2023-09-01 00:43:45,125 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:43:45" (1/1) ... [2023-09-01 00:43:45,140 INFO L138 Inliner]: procedures = 171, calls = 47, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 130 [2023-09-01 00:43:45,141 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:43:45,142 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:43:45,142 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:43:45,142 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:43:45,153 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:43:45" (1/1) ... [2023-09-01 00:43:45,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:43:45" (1/1) ... [2023-09-01 00:43:45,155 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:43:45" (1/1) ... [2023-09-01 00:43:45,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:43:45" (1/1) ... [2023-09-01 00:43:45,160 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:43:45" (1/1) ... [2023-09-01 00:43:45,164 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:43:45" (1/1) ... [2023-09-01 00:43:45,165 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:43:45" (1/1) ... [2023-09-01 00:43:45,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:43:45" (1/1) ... [2023-09-01 00:43:45,185 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:43:45,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:43:45,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:43:45,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:43:45,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:43:45" (1/1) ... [2023-09-01 00:43:45,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:43:45,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:43:45,209 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 00:43:45,222 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 00:43:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:43:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:43:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:43:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:43:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:43:45,246 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:43:45,247 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:43:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:43:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-09-01 00:43:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:43:45,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:43:45,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:43:45,248 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 00:43:45,373 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:43:45,374 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:43:45,649 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:43:45,658 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:43:45,658 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-09-01 00:43:45,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:43:45 BoogieIcfgContainer [2023-09-01 00:43:45,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:43:45,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:43:45,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:43:45,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:43:45,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:43:44" (1/3) ... [2023-09-01 00:43:45,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3969cd56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:43:45, skipping insertion in model container [2023-09-01 00:43:45,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:43:45" (2/3) ... [2023-09-01 00:43:45,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3969cd56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:43:45, skipping insertion in model container [2023-09-01 00:43:45,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:43:45" (3/3) ... [2023-09-01 00:43:45,667 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2023-09-01 00:43:45,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:43:45,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-09-01 00:43:45,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:43:45,755 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:43:45,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 192 transitions, 392 flow [2023-09-01 00:43:45,851 INFO L130 PetriNetUnfolder]: 45/284 cut-off events. [2023-09-01 00:43:45,852 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:43:45,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 284 events. 45/284 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1094 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 150. Up to 6 conditions per place. [2023-09-01 00:43:45,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 166 places, 192 transitions, 392 flow [2023-09-01 00:43:45,861 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 187 transitions, 379 flow [2023-09-01 00:43:45,863 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:45,873 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 187 transitions, 379 flow [2023-09-01 00:43:45,883 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 187 transitions, 379 flow [2023-09-01 00:43:45,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 187 transitions, 379 flow [2023-09-01 00:43:45,910 INFO L130 PetriNetUnfolder]: 44/279 cut-off events. [2023-09-01 00:43:45,910 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:43:45,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284 conditions, 279 events. 44/279 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1079 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 150. Up to 6 conditions per place. [2023-09-01 00:43:45,915 INFO L119 LiptonReduction]: Number of co-enabled transitions 10388 [2023-09-01 00:43:48,413 INFO L134 LiptonReduction]: Checked pairs total: 22589 [2023-09-01 00:43:48,413 INFO L136 LiptonReduction]: Total number of compositions: 149 [2023-09-01 00:43:48,440 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:48,445 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;@768c0ba4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:48,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:48,454 INFO L130 PetriNetUnfolder]: 4/32 cut-off events. [2023-09-01 00:43:48,454 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:43:48,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:48,456 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:43:48,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:48,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:48,467 INFO L85 PathProgramCache]: Analyzing trace with hash 264554101, now seen corresponding path program 1 times [2023-09-01 00:43:48,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:48,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099330950] [2023-09-01 00:43:48,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:48,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:48,585 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:48,640 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:48,641 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:48,642 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:48,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:43:48,643 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:48,646 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:48,647 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:48,647 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:43:48,675 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:43:48,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 247 transitions, 512 flow [2023-09-01 00:43:48,737 INFO L130 PetriNetUnfolder]: 76/460 cut-off events. [2023-09-01 00:43:48,738 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:43:48,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 460 events. 76/460 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2008 event pairs, 0 based on Foata normal form. 0/350 useless extension candidates. Maximal degree in co-relation 286. Up to 9 conditions per place. [2023-09-01 00:43:48,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 247 transitions, 512 flow [2023-09-01 00:43:48,742 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 247 transitions, 512 flow [2023-09-01 00:43:48,743 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:48,743 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 247 transitions, 512 flow [2023-09-01 00:43:48,743 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 247 transitions, 512 flow [2023-09-01 00:43:48,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 247 transitions, 512 flow [2023-09-01 00:43:48,772 INFO L130 PetriNetUnfolder]: 76/460 cut-off events. [2023-09-01 00:43:48,772 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:43:48,775 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 460 events. 76/460 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2008 event pairs, 0 based on Foata normal form. 0/350 useless extension candidates. Maximal degree in co-relation 286. Up to 9 conditions per place. [2023-09-01 00:43:48,787 INFO L119 LiptonReduction]: Number of co-enabled transitions 27560 [2023-09-01 00:43:51,674 INFO L134 LiptonReduction]: Checked pairs total: 75842 [2023-09-01 00:43:51,674 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-09-01 00:43:51,675 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:51,676 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;@768c0ba4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:51,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:51,681 INFO L130 PetriNetUnfolder]: 25/111 cut-off events. [2023-09-01 00:43:51,682 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 00:43:51,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:51,682 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:43:51,682 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:51,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:51,683 INFO L85 PathProgramCache]: Analyzing trace with hash 404511701, now seen corresponding path program 1 times [2023-09-01 00:43:51,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:51,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1135668410] [2023-09-01 00:43:51,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:51,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:51,702 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:51,718 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:51,718 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:51,718 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:51,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:43:51,718 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:51,719 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:51,719 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:51,719 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:43:51,735 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:43:51,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 302 transitions, 634 flow [2023-09-01 00:43:51,787 INFO L130 PetriNetUnfolder]: 112/677 cut-off events. [2023-09-01 00:43:51,788 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:43:51,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 677 events. 112/677 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3088 event pairs, 1 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 468. Up to 16 conditions per place. [2023-09-01 00:43:51,807 INFO L82 GeneralOperation]: Start removeDead. Operand has 254 places, 302 transitions, 634 flow [2023-09-01 00:43:51,811 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 254 places, 302 transitions, 634 flow [2023-09-01 00:43:51,811 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:51,812 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 254 places, 302 transitions, 634 flow [2023-09-01 00:43:51,812 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 254 places, 302 transitions, 634 flow [2023-09-01 00:43:51,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 254 places, 302 transitions, 634 flow [2023-09-01 00:43:51,866 INFO L130 PetriNetUnfolder]: 112/677 cut-off events. [2023-09-01 00:43:51,867 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:43:51,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 705 conditions, 677 events. 112/677 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3088 event pairs, 1 based on Foata normal form. 0/513 useless extension candidates. Maximal degree in co-relation 468. Up to 16 conditions per place. [2023-09-01 00:43:51,884 INFO L119 LiptonReduction]: Number of co-enabled transitions 50244 [2023-09-01 00:43:54,757 INFO L134 LiptonReduction]: Checked pairs total: 148633 [2023-09-01 00:43:54,758 INFO L136 LiptonReduction]: Total number of compositions: 199 [2023-09-01 00:43:54,759 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:54,759 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;@768c0ba4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:54,760 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:54,769 INFO L130 PetriNetUnfolder]: 51/206 cut-off events. [2023-09-01 00:43:54,769 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-09-01 00:43:54,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:54,769 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:43:54,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:54,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:54,770 INFO L85 PathProgramCache]: Analyzing trace with hash 1225596779, now seen corresponding path program 1 times [2023-09-01 00:43:54,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:54,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671744252] [2023-09-01 00:43:54,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:54,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:54,786 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:54,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:54,801 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:54,801 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:54,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:43:54,801 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:54,802 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:54,802 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:54,802 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:43:54,823 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:43:54,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 357 transitions, 758 flow [2023-09-01 00:43:54,944 INFO L130 PetriNetUnfolder]: 160/978 cut-off events. [2023-09-01 00:43:54,950 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:43:54,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 978 events. 160/978 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4814 event pairs, 6 based on Foata normal form. 0/740 useless extension candidates. Maximal degree in co-relation 697. Up to 32 conditions per place. [2023-09-01 00:43:54,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 357 transitions, 758 flow [2023-09-01 00:43:54,977 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 298 places, 357 transitions, 758 flow [2023-09-01 00:43:54,977 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:54,977 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 298 places, 357 transitions, 758 flow [2023-09-01 00:43:54,977 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 298 places, 357 transitions, 758 flow [2023-09-01 00:43:54,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 357 transitions, 758 flow [2023-09-01 00:43:55,100 INFO L130 PetriNetUnfolder]: 160/978 cut-off events. [2023-09-01 00:43:55,101 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:43:55,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 978 events. 160/978 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 4814 event pairs, 6 based on Foata normal form. 0/740 useless extension candidates. Maximal degree in co-relation 697. Up to 32 conditions per place. [2023-09-01 00:43:55,159 INFO L119 LiptonReduction]: Number of co-enabled transitions 78864 [2023-09-01 00:43:58,100 INFO L134 LiptonReduction]: Checked pairs total: 268251 [2023-09-01 00:43:58,101 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-09-01 00:43:58,102 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:58,102 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;@768c0ba4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:58,102 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:58,134 INFO L130 PetriNetUnfolder]: 71/276 cut-off events. [2023-09-01 00:43:58,135 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:43:58,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:58,135 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:43:58,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:58,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:58,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1540512289, now seen corresponding path program 1 times [2023-09-01 00:43:58,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:58,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631330344] [2023-09-01 00:43:58,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:58,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:58,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:58,184 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:58,199 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:58,199 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:58,200 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:58,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:43:58,200 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:58,200 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:58,200 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:58,200 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:43:58,233 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:43:58,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 412 transitions, 884 flow [2023-09-01 00:43:58,409 INFO L130 PetriNetUnfolder]: 236/1451 cut-off events. [2023-09-01 00:43:58,409 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:43:58,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 1451 events. 236/1451 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 7977 event pairs, 23 based on Foata normal form. 0/1099 useless extension candidates. Maximal degree in co-relation 1023. Up to 80 conditions per place. [2023-09-01 00:43:58,422 INFO L82 GeneralOperation]: Start removeDead. Operand has 342 places, 412 transitions, 884 flow [2023-09-01 00:43:58,431 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 412 transitions, 884 flow [2023-09-01 00:43:58,431 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:58,431 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 342 places, 412 transitions, 884 flow [2023-09-01 00:43:58,431 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 342 places, 412 transitions, 884 flow [2023-09-01 00:43:58,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 412 transitions, 884 flow [2023-09-01 00:43:58,596 INFO L130 PetriNetUnfolder]: 236/1451 cut-off events. [2023-09-01 00:43:58,596 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:43:58,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1562 conditions, 1451 events. 236/1451 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 7977 event pairs, 23 based on Foata normal form. 0/1099 useless extension candidates. Maximal degree in co-relation 1023. Up to 80 conditions per place. [2023-09-01 00:43:58,656 INFO L119 LiptonReduction]: Number of co-enabled transitions 113420 [2023-09-01 00:44:01,692 INFO L134 LiptonReduction]: Checked pairs total: 353338 [2023-09-01 00:44:01,693 INFO L136 LiptonReduction]: Total number of compositions: 254 [2023-09-01 00:44:01,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:44:01,697 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;@768c0ba4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:44:01,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:44:01,719 INFO L130 PetriNetUnfolder]: 94/361 cut-off events. [2023-09-01 00:44:01,719 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-09-01 00:44:01,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:01,719 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:44:01,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:44:01,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:01,720 INFO L85 PathProgramCache]: Analyzing trace with hash -644773240, now seen corresponding path program 1 times [2023-09-01 00:44:01,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:44:01,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996471586] [2023-09-01 00:44:01,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:01,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:44:01,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:01,763 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:44:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:01,802 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:44:01,803 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:44:01,803 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:44:01,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:44:01,803 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:44:01,805 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:44:01,805 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:44:01,805 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:44:01,839 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:44:01,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 386 places, 467 transitions, 1012 flow [2023-09-01 00:44:02,244 INFO L130 PetriNetUnfolder]: 376/2276 cut-off events. [2023-09-01 00:44:02,244 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:44:02,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2508 conditions, 2276 events. 376/2276 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 14252 event pairs, 72 based on Foata normal form. 0/1730 useless extension candidates. Maximal degree in co-relation 1550. Up to 192 conditions per place. [2023-09-01 00:44:02,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 386 places, 467 transitions, 1012 flow [2023-09-01 00:44:02,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 386 places, 467 transitions, 1012 flow [2023-09-01 00:44:02,280 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:44:02,280 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 386 places, 467 transitions, 1012 flow [2023-09-01 00:44:02,280 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 386 places, 467 transitions, 1012 flow [2023-09-01 00:44:02,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 386 places, 467 transitions, 1012 flow [2023-09-01 00:44:02,595 INFO L130 PetriNetUnfolder]: 376/2276 cut-off events. [2023-09-01 00:44:02,596 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:44:02,623 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2508 conditions, 2276 events. 376/2276 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 14252 event pairs, 72 based on Foata normal form. 0/1730 useless extension candidates. Maximal degree in co-relation 1550. Up to 192 conditions per place. [2023-09-01 00:44:02,745 INFO L119 LiptonReduction]: Number of co-enabled transitions 153912 [2023-09-01 00:44:05,875 INFO L134 LiptonReduction]: Checked pairs total: 555850 [2023-09-01 00:44:05,875 INFO L136 LiptonReduction]: Total number of compositions: 275 [2023-09-01 00:44:05,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:44:05,877 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;@768c0ba4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:44:05,877 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:44:05,906 INFO L130 PetriNetUnfolder]: 129/483 cut-off events. [2023-09-01 00:44:05,906 INFO L131 PetriNetUnfolder]: For 61/61 co-relation queries the response was YES. [2023-09-01 00:44:05,906 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:05,906 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:44:05,906 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:44:05,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:05,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1980504095, now seen corresponding path program 1 times [2023-09-01 00:44:05,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:44:05,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826532411] [2023-09-01 00:44:05,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:05,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:44:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:05,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:44:05,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:05,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:44:05,975 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:44:05,975 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:44:05,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:44:05,975 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:44:05,976 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:44:05,976 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:44:05,976 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:44:05,998 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:44:06,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 522 transitions, 1142 flow [2023-09-01 00:44:06,764 INFO L130 PetriNetUnfolder]: 660/3821 cut-off events. [2023-09-01 00:44:06,764 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:44:06,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4319 conditions, 3821 events. 660/3821 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 27752 event pairs, 201 based on Foata normal form. 0/2921 useless extension candidates. Maximal degree in co-relation 2494. Up to 448 conditions per place. [2023-09-01 00:44:06,810 INFO L82 GeneralOperation]: Start removeDead. Operand has 430 places, 522 transitions, 1142 flow [2023-09-01 00:44:06,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 430 places, 522 transitions, 1142 flow [2023-09-01 00:44:06,845 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:44:06,846 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 430 places, 522 transitions, 1142 flow [2023-09-01 00:44:06,846 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 430 places, 522 transitions, 1142 flow [2023-09-01 00:44:06,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 430 places, 522 transitions, 1142 flow [2023-09-01 00:44:07,565 INFO L130 PetriNetUnfolder]: 660/3821 cut-off events. [2023-09-01 00:44:07,565 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:44:07,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4319 conditions, 3821 events. 660/3821 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 27752 event pairs, 201 based on Foata normal form. 0/2921 useless extension candidates. Maximal degree in co-relation 2494. Up to 448 conditions per place. [2023-09-01 00:44:07,770 INFO L119 LiptonReduction]: Number of co-enabled transitions 200340 [2023-09-01 00:44:11,146 INFO L134 LiptonReduction]: Checked pairs total: 637616 [2023-09-01 00:44:11,150 INFO L136 LiptonReduction]: Total number of compositions: 307 [2023-09-01 00:44:11,152 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:44:11,152 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;@768c0ba4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:44:11,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:44:11,204 INFO L130 PetriNetUnfolder]: 138/545 cut-off events. [2023-09-01 00:44:11,204 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2023-09-01 00:44:11,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:11,205 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:44:11,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:44:11,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:11,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1727606470, now seen corresponding path program 1 times [2023-09-01 00:44:11,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:44:11,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789206920] [2023-09-01 00:44:11,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:11,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:44:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:11,237 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:44:11,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:11,275 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:44:11,277 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:44:11,277 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:44:11,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:44:11,277 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:44:11,278 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:44:11,278 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:44:11,278 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:44:11,310 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:44:11,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 474 places, 577 transitions, 1274 flow [2023-09-01 00:44:12,671 INFO L130 PetriNetUnfolder]: 1264/6838 cut-off events. [2023-09-01 00:44:12,671 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:44:12,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7923 conditions, 6838 events. 1264/6838 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 59134 event pairs, 522 based on Foata normal form. 0/5264 useless extension candidates. Maximal degree in co-relation 4303. Up to 1024 conditions per place. [2023-09-01 00:44:12,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 474 places, 577 transitions, 1274 flow [2023-09-01 00:44:12,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 474 places, 577 transitions, 1274 flow [2023-09-01 00:44:12,831 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:44:12,831 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 474 places, 577 transitions, 1274 flow [2023-09-01 00:44:12,832 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 474 places, 577 transitions, 1274 flow [2023-09-01 00:44:12,832 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 474 places, 577 transitions, 1274 flow [2023-09-01 00:44:14,250 INFO L130 PetriNetUnfolder]: 1264/6838 cut-off events. [2023-09-01 00:44:14,250 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:44:14,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7923 conditions, 6838 events. 1264/6838 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 59134 event pairs, 522 based on Foata normal form. 0/5264 useless extension candidates. Maximal degree in co-relation 4303. Up to 1024 conditions per place. [2023-09-01 00:44:14,684 INFO L119 LiptonReduction]: Number of co-enabled transitions 252704 [2023-09-01 00:44:18,052 INFO L134 LiptonReduction]: Checked pairs total: 932173 [2023-09-01 00:44:18,053 INFO L136 LiptonReduction]: Total number of compositions: 328 [2023-09-01 00:44:18,054 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:44:18,054 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;@768c0ba4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:44:18,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:44:18,104 INFO L130 PetriNetUnfolder]: 181/700 cut-off events. [2023-09-01 00:44:18,104 INFO L131 PetriNetUnfolder]: For 147/147 co-relation queries the response was YES. [2023-09-01 00:44:18,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:18,105 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:44:18,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:44:18,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:18,105 INFO L85 PathProgramCache]: Analyzing trace with hash 2063677365, now seen corresponding path program 1 times [2023-09-01 00:44:18,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:44:18,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637288908] [2023-09-01 00:44:18,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:18,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:44:18,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:18,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:44:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:18,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:44:18,152 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:44:18,152 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:44:18,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:44:18,152 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:44:18,153 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:44:18,153 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:44:18,153 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:44:18,188 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:44:18,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 518 places, 632 transitions, 1408 flow [2023-09-01 00:44:21,025 INFO L130 PetriNetUnfolder]: 2572/12863 cut-off events. [2023-09-01 00:44:21,025 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:44:21,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15240 conditions, 12863 events. 2572/12863 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 127109 event pairs, 1291 based on Foata normal form. 0/9975 useless extension candidates. Maximal degree in co-relation 7905. Up to 2304 conditions per place. [2023-09-01 00:44:21,432 INFO L82 GeneralOperation]: Start removeDead. Operand has 518 places, 632 transitions, 1408 flow [2023-09-01 00:44:22,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 518 places, 632 transitions, 1408 flow [2023-09-01 00:44:22,038 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:44:22,038 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 518 places, 632 transitions, 1408 flow [2023-09-01 00:44:22,057 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 518 places, 632 transitions, 1408 flow [2023-09-01 00:44:22,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 518 places, 632 transitions, 1408 flow [2023-09-01 00:44:24,990 INFO L130 PetriNetUnfolder]: 2572/12863 cut-off events. [2023-09-01 00:44:24,991 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:44:25,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15240 conditions, 12863 events. 2572/12863 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 127109 event pairs, 1291 based on Foata normal form. 0/9975 useless extension candidates. Maximal degree in co-relation 7905. Up to 2304 conditions per place. [2023-09-01 00:44:25,971 INFO L119 LiptonReduction]: Number of co-enabled transitions 311004 [2023-09-01 00:44:29,410 INFO L134 LiptonReduction]: Checked pairs total: 1023102 [2023-09-01 00:44:29,411 INFO L136 LiptonReduction]: Total number of compositions: 356 [2023-09-01 00:44:29,414 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:44:29,416 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;@768c0ba4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:44:29,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:44:29,483 INFO L130 PetriNetUnfolder]: 216/844 cut-off events. [2023-09-01 00:44:29,484 INFO L131 PetriNetUnfolder]: For 215/215 co-relation queries the response was YES. [2023-09-01 00:44:29,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:29,484 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:44:29,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:44:29,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:29,485 INFO L85 PathProgramCache]: Analyzing trace with hash -658052082, now seen corresponding path program 1 times [2023-09-01 00:44:29,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:44:29,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675689379] [2023-09-01 00:44:29,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:29,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:44:29,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:29,519 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:44:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:29,539 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:44:29,540 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:44:29,540 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:44:29,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:44:29,540 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:44:29,540 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:44:29,541 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:44:29,541 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:44:29,569 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:44:29,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 562 places, 687 transitions, 1544 flow [2023-09-01 00:44:36,052 INFO L130 PetriNetUnfolder]: 5416/25032 cut-off events. [2023-09-01 00:44:36,052 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:44:36,566 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30238 conditions, 25032 events. 5416/25032 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 283353 event pairs, 3084 based on Foata normal form. 0/19550 useless extension candidates. Maximal degree in co-relation 15220. Up to 5120 conditions per place. [2023-09-01 00:44:36,567 INFO L82 GeneralOperation]: Start removeDead. Operand has 562 places, 687 transitions, 1544 flow [2023-09-01 00:44:36,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 562 places, 687 transitions, 1544 flow [2023-09-01 00:44:36,919 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:44:36,919 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 562 places, 687 transitions, 1544 flow [2023-09-01 00:44:36,919 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 562 places, 687 transitions, 1544 flow [2023-09-01 00:44:36,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 562 places, 687 transitions, 1544 flow [2023-09-01 00:44:43,425 INFO L130 PetriNetUnfolder]: 5416/25032 cut-off events. [2023-09-01 00:44:43,426 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:44:43,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30238 conditions, 25032 events. 5416/25032 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 283353 event pairs, 3084 based on Foata normal form. 0/19550 useless extension candidates. Maximal degree in co-relation 15220. Up to 5120 conditions per place. [2023-09-01 00:44:45,600 INFO L119 LiptonReduction]: Number of co-enabled transitions 375240 [2023-09-01 00:44:49,462 INFO L134 LiptonReduction]: Checked pairs total: 1246251 [2023-09-01 00:44:49,462 INFO L136 LiptonReduction]: Total number of compositions: 383 [2023-09-01 00:44:49,464 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:44:49,464 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;@768c0ba4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:44:49,464 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:44:49,561 INFO L130 PetriNetUnfolder]: 268/1034 cut-off events. [2023-09-01 00:44:49,562 INFO L131 PetriNetUnfolder]: For 308/308 co-relation queries the response was YES. [2023-09-01 00:44:49,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:49,562 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:44:49,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:44:49,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:49,563 INFO L85 PathProgramCache]: Analyzing trace with hash 260619167, now seen corresponding path program 1 times [2023-09-01 00:44:49,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:44:49,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126168011] [2023-09-01 00:44:49,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:49,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:44:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:49,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:44:49,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:49,616 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:44:49,616 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:44:49,616 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:44:49,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:44:49,617 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:44:49,617 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:44:49,617 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:44:49,617 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:44:49,646 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:44:49,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 606 places, 742 transitions, 1682 flow [2023-09-01 00:45:03,835 INFO L130 PetriNetUnfolder]: 11588/49745 cut-off events. [2023-09-01 00:45:03,835 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:45:05,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61109 conditions, 49745 events. 11588/49745 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 629838 event pairs, 7181 based on Foata normal form. 0/39109 useless extension candidates. Maximal degree in co-relation 30216. Up to 11264 conditions per place. [2023-09-01 00:45:05,108 INFO L82 GeneralOperation]: Start removeDead. Operand has 606 places, 742 transitions, 1682 flow [2023-09-01 00:45:06,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 606 places, 742 transitions, 1682 flow [2023-09-01 00:45:06,222 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:45:06,222 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 606 places, 742 transitions, 1682 flow [2023-09-01 00:45:06,222 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 606 places, 742 transitions, 1682 flow [2023-09-01 00:45:06,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 606 places, 742 transitions, 1682 flow [2023-09-01 00:45:20,790 INFO L130 PetriNetUnfolder]: 11588/49745 cut-off events. [2023-09-01 00:45:20,790 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:45:22,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61109 conditions, 49745 events. 11588/49745 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 629838 event pairs, 7181 based on Foata normal form. 0/39109 useless extension candidates. Maximal degree in co-relation 30216. Up to 11264 conditions per place. [2023-09-01 00:45:26,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 445412 [2023-09-01 00:45:30,400 INFO L134 LiptonReduction]: Checked pairs total: 1678272 [2023-09-01 00:45:30,403 INFO L136 LiptonReduction]: Total number of compositions: 409 [2023-09-01 00:45:30,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:30,404 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;@768c0ba4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:30,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:30,561 INFO L130 PetriNetUnfolder]: 317/1236 cut-off events. [2023-09-01 00:45:30,561 INFO L131 PetriNetUnfolder]: For 436/436 co-relation queries the response was YES. [2023-09-01 00:45:30,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:30,562 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:45:30,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:30,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:30,563 INFO L85 PathProgramCache]: Analyzing trace with hash -458498139, now seen corresponding path program 1 times [2023-09-01 00:45:30,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:30,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46340232] [2023-09-01 00:45:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:30,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:30,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:30,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:30,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:30,652 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:30,652 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:30,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:45:30,653 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:30,654 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:30,654 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:30,655 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:45:30,693 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:45:30,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 650 places, 797 transitions, 1822 flow [2023-09-01 00:46:02,451 INFO L130 PetriNetUnfolder]: 24928/100058 cut-off events. [2023-09-01 00:46:02,452 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:46:07,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124749 conditions, 100058 events. 24928/100058 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2205. Compared 1383708 event pairs, 16398 based on Foata normal form. 0/79148 useless extension candidates. Maximal degree in co-relation 61085. Up to 24576 conditions per place. [2023-09-01 00:46:07,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 650 places, 797 transitions, 1822 flow [2023-09-01 00:46:09,468 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 650 places, 797 transitions, 1822 flow [2023-09-01 00:46:09,468 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:46:09,468 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 650 places, 797 transitions, 1822 flow [2023-09-01 00:46:09,469 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 650 places, 797 transitions, 1822 flow [2023-09-01 00:46:09,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 650 places, 797 transitions, 1822 flow [2023-09-01 00:46:41,725 INFO L130 PetriNetUnfolder]: 24928/100058 cut-off events. [2023-09-01 00:46:41,725 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:46:46,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124749 conditions, 100058 events. 24928/100058 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2205. Compared 1383708 event pairs, 16398 based on Foata normal form. 0/79148 useless extension candidates. Maximal degree in co-relation 61085. Up to 24576 conditions per place. [2023-09-01 00:47:00,201 INFO L119 LiptonReduction]: Number of co-enabled transitions 521520 [2023-09-01 00:47:04,186 INFO L134 LiptonReduction]: Checked pairs total: 1762419 [2023-09-01 00:47:04,186 INFO L136 LiptonReduction]: Total number of compositions: 432 [2023-09-01 00:47:04,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:47:04,189 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;@768c0ba4, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:47:04,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:47:04,381 INFO L130 PetriNetUnfolder]: 413/1598 cut-off events. [2023-09-01 00:47:04,382 INFO L131 PetriNetUnfolder]: For 613/613 co-relation queries the response was YES. [2023-09-01 00:47:04,382 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:47:04,382 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 00:47:04,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:47:04,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:47:04,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1126989639, now seen corresponding path program 1 times [2023-09-01 00:47:04,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:47:04,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533396412] [2023-09-01 00:47:04,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:47:04,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:47:04,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:47:04,410 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:47:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:47:04,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:47:04,427 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:47:04,427 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:47:04,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:47:04,428 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:47:04,428 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:47:04,428 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:47:04,428 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:47:04,460 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:47:04,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 694 places, 852 transitions, 1964 flow [2023-09-01 00:48:22,573 INFO L130 PetriNetUnfolder]: 53628/202595 cut-off events. [2023-09-01 00:48:22,573 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:48:35,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255974 conditions, 202595 events. 53628/202595 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4221. Compared 3061633 event pairs, 36879 based on Foata normal form. 0/161171 useless extension candidates. Maximal degree in co-relation 124723. Up to 53248 conditions per place. [2023-09-01 00:48:35,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 694 places, 852 transitions, 1964 flow