./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races 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/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-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 ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --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 [2023-08-31 20:49:50,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:49:50,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:49:50,352 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:49:50,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:49:50,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:49:50,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:49:50,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:49:50,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:49:50,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:49:50,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:49:50,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:49:50,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:49:50,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:49:50,368 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:49:50,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:49:50,372 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:49:50,373 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:49:50,374 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:49:50,377 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:49:50,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:49:50,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:49:50,383 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:49:50,384 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:49:50,389 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:49:50,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:49:50,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:49:50,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:49:50,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:49:50,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:49:50,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:49:50,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:49:50,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:49:50,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:49:50,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:49:50,395 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:49:50,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:49:50,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:49:50,396 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:49:50,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:49:50,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:49:50,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:49:50,421 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:49:50,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:49:50,423 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:49:50,423 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:49:50,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:49:50,423 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:49:50,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:49:50,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:49:50,424 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:49:50,424 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:49:50,425 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:49:50,425 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:49:50,425 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:49:50,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:49:50,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:49:50,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:49:50,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:49:50,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:49:50,426 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:49:50,426 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:49:50,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:49:50,427 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:49:50,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:49:50,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:49:50,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:49:50,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:49:50,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:49:50,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:49:50,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:49:50,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:49:50,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:49:50,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:49:50,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:49:50,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:49:50,429 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:49:50,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:49:50,429 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:49:50,429 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:49:50,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:49:50,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:49:50,648 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:49:50,649 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:49:50,649 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:49:50,650 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-08-31 20:49:51,613 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:49:51,759 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:49:51,759 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2023-08-31 20:49:51,777 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cfa5422c/d0a8cd5ed7b24fdfa045996649d078ce/FLAG681d34ccb [2023-08-31 20:49:51,787 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cfa5422c/d0a8cd5ed7b24fdfa045996649d078ce [2023-08-31 20:49:51,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:49:51,793 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:49:51,794 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:49:51,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:49:51,803 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:49:51,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:49:51" (1/1) ... [2023-08-31 20:49:51,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34cbb532 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:49:51, skipping insertion in model container [2023-08-31 20:49:51,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:49:51" (1/1) ... [2023-08-31 20:49:51,808 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:49:51,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:49:51,998 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_24-sound_lock_racing.i[30176,30189] [2023-08-31 20:49:52,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:49:52,025 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:49:52,058 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_24-sound_lock_racing.i[30176,30189] [2023-08-31 20:49:52,074 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:49:52,102 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:49:52,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:49:52 WrapperNode [2023-08-31 20:49:52,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:49:52,103 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:49:52,103 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:49:52,103 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:49:52,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:49:52" (1/1) ... [2023-08-31 20:49:52,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:49:52" (1/1) ... [2023-08-31 20:49:52,133 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 93 [2023-08-31 20:49:52,134 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:49:52,135 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:49:52,136 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:49:52,136 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:49:52,141 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:49:52" (1/1) ... [2023-08-31 20:49:52,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:49:52" (1/1) ... [2023-08-31 20:49:52,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:49:52" (1/1) ... [2023-08-31 20:49:52,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:49:52" (1/1) ... [2023-08-31 20:49:52,150 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:49:52" (1/1) ... [2023-08-31 20:49:52,152 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:49:52" (1/1) ... [2023-08-31 20:49:52,154 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:49:52" (1/1) ... [2023-08-31 20:49:52,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:49:52" (1/1) ... [2023-08-31 20:49:52,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:49:52,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:49:52,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:49:52,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:49:52,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:49:52" (1/1) ... [2023-08-31 20:49:52,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:49:52,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:49:52,180 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) [2023-08-31 20:49:52,191 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 [2023-08-31 20:49:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:49:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:49:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:49:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:49:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:49:52,212 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:49:52,213 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:49:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:49:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:49:52,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:49:52,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:49:52,214 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 20:49:52,314 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:49:52,316 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:49:52,512 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:49:52,518 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:49:52,520 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-31 20:49:52,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:49:52 BoogieIcfgContainer [2023-08-31 20:49:52,522 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:49:52,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:49:52,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:49:52,526 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:49:52,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:49:51" (1/3) ... [2023-08-31 20:49:52,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bd0d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:49:52, skipping insertion in model container [2023-08-31 20:49:52,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:49:52" (2/3) ... [2023-08-31 20:49:52,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51bd0d63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:49:52, skipping insertion in model container [2023-08-31 20:49:52,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:49:52" (3/3) ... [2023-08-31 20:49:52,528 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2023-08-31 20:49:52,534 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:49:52,540 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:49:52,540 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-31 20:49:52,540 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:49:52,616 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:49:52,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 138 transitions, 284 flow [2023-08-31 20:49:52,726 INFO L130 PetriNetUnfolder]: 18/179 cut-off events. [2023-08-31 20:49:52,729 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:49:52,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 179 events. 18/179 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 485 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-08-31 20:49:52,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 128 places, 138 transitions, 284 flow [2023-08-31 20:49:52,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 133 transitions, 271 flow [2023-08-31 20:49:52,743 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:49:52,759 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 133 transitions, 271 flow [2023-08-31 20:49:52,762 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 133 transitions, 271 flow [2023-08-31 20:49:52,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 133 transitions, 271 flow [2023-08-31 20:49:52,810 INFO L130 PetriNetUnfolder]: 17/174 cut-off events. [2023-08-31 20:49:52,811 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:49:52,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 174 events. 17/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 484 event pairs, 0 based on Foata normal form. 0/145 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-08-31 20:49:52,814 INFO L119 LiptonReduction]: Number of co-enabled transitions 4136 [2023-08-31 20:49:55,847 INFO L134 LiptonReduction]: Checked pairs total: 11826 [2023-08-31 20:49:55,847 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-31 20:49:55,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:49:55,859 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6d222009, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:49:55,860 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:49:55,864 INFO L130 PetriNetUnfolder]: 1/25 cut-off events. [2023-08-31 20:49:55,864 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:49:55,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:49:55,865 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:49:55,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:49:55,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:49:55,868 INFO L85 PathProgramCache]: Analyzing trace with hash -2075992140, now seen corresponding path program 1 times [2023-08-31 20:49:55,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:49:55,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887112933] [2023-08-31 20:49:55,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:49:55,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:49:55,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:49:55,995 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:49:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:49:56,024 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:49:56,025 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:49:56,026 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:49:56,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:49:56,027 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:49:56,029 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:49:56,029 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:49:56,030 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:49:56,047 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:49:56,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 184 transitions, 386 flow [2023-08-31 20:49:56,074 INFO L130 PetriNetUnfolder]: 32/296 cut-off events. [2023-08-31 20:49:56,074 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:49:56,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 296 events. 32/296 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 971 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2023-08-31 20:49:56,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 169 places, 184 transitions, 386 flow [2023-08-31 20:49:56,078 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 169 places, 184 transitions, 386 flow [2023-08-31 20:49:56,078 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:49:56,078 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 184 transitions, 386 flow [2023-08-31 20:49:56,078 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 184 transitions, 386 flow [2023-08-31 20:49:56,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 184 transitions, 386 flow [2023-08-31 20:49:56,107 INFO L130 PetriNetUnfolder]: 32/296 cut-off events. [2023-08-31 20:49:56,107 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:49:56,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 296 events. 32/296 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 971 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 181. Up to 8 conditions per place. [2023-08-31 20:49:56,115 INFO L119 LiptonReduction]: Number of co-enabled transitions 13112 [2023-08-31 20:49:59,166 INFO L134 LiptonReduction]: Checked pairs total: 45041 [2023-08-31 20:49:59,166 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-08-31 20:49:59,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:49:59,169 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6d222009, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:49:59,169 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:49:59,173 INFO L130 PetriNetUnfolder]: 8/67 cut-off events. [2023-08-31 20:49:59,173 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 20:49:59,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:49:59,173 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:49:59,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:49:59,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:49:59,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1348880076, now seen corresponding path program 1 times [2023-08-31 20:49:59,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:49:59,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507248081] [2023-08-31 20:49:59,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:49:59,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:49:59,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:49:59,197 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:49:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:49:59,214 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:49:59,215 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:49:59,215 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:49:59,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:49:59,215 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:49:59,216 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:49:59,216 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:49:59,216 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:49:59,229 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:49:59,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 230 transitions, 490 flow [2023-08-31 20:49:59,267 INFO L130 PetriNetUnfolder]: 51/456 cut-off events. [2023-08-31 20:49:59,268 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:49:59,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 456 events. 51/456 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1706 event pairs, 1 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 304. Up to 16 conditions per place. [2023-08-31 20:49:59,270 INFO L82 GeneralOperation]: Start removeDead. Operand has 210 places, 230 transitions, 490 flow [2023-08-31 20:49:59,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 210 places, 230 transitions, 490 flow [2023-08-31 20:49:59,272 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:49:59,272 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 210 places, 230 transitions, 490 flow [2023-08-31 20:49:59,273 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 210 places, 230 transitions, 490 flow [2023-08-31 20:49:59,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 210 places, 230 transitions, 490 flow [2023-08-31 20:49:59,304 INFO L130 PetriNetUnfolder]: 51/456 cut-off events. [2023-08-31 20:49:59,304 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:49:59,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 484 conditions, 456 events. 51/456 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1706 event pairs, 1 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 304. Up to 16 conditions per place. [2023-08-31 20:49:59,318 INFO L119 LiptonReduction]: Number of co-enabled transitions 25872 [2023-08-31 20:50:02,682 INFO L134 LiptonReduction]: Checked pairs total: 110452 [2023-08-31 20:50:02,682 INFO L136 LiptonReduction]: Total number of compositions: 144 [2023-08-31 20:50:02,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:02,684 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6d222009, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:02,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:02,690 INFO L130 PetriNetUnfolder]: 18/119 cut-off events. [2023-08-31 20:50:02,691 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 20:50:02,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:02,691 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:50:02,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:02,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:02,691 INFO L85 PathProgramCache]: Analyzing trace with hash 202907500, now seen corresponding path program 1 times [2023-08-31 20:50:02,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:02,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343971043] [2023-08-31 20:50:02,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:02,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:02,740 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:02,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:02,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:02,778 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:02,778 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:02,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:50:02,778 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:02,779 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:02,779 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:02,779 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:50:02,797 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:50:02,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 276 transitions, 596 flow [2023-08-31 20:50:02,863 INFO L130 PetriNetUnfolder]: 82/704 cut-off events. [2023-08-31 20:50:02,863 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:50:02,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 704 events. 82/704 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2976 event pairs, 6 based on Foata normal form. 0/585 useless extension candidates. Maximal degree in co-relation 476. Up to 32 conditions per place. [2023-08-31 20:50:02,870 INFO L82 GeneralOperation]: Start removeDead. Operand has 251 places, 276 transitions, 596 flow [2023-08-31 20:50:02,874 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 251 places, 276 transitions, 596 flow [2023-08-31 20:50:02,874 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:02,874 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 251 places, 276 transitions, 596 flow [2023-08-31 20:50:02,875 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 251 places, 276 transitions, 596 flow [2023-08-31 20:50:02,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 251 places, 276 transitions, 596 flow [2023-08-31 20:50:02,948 INFO L130 PetriNetUnfolder]: 82/704 cut-off events. [2023-08-31 20:50:02,948 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:50:02,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 759 conditions, 704 events. 82/704 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2976 event pairs, 6 based on Foata normal form. 0/585 useless extension candidates. Maximal degree in co-relation 476. Up to 32 conditions per place. [2023-08-31 20:50:02,966 INFO L119 LiptonReduction]: Number of co-enabled transitions 42768 [2023-08-31 20:50:06,258 INFO L134 LiptonReduction]: Checked pairs total: 187566 [2023-08-31 20:50:06,259 INFO L136 LiptonReduction]: Total number of compositions: 161 [2023-08-31 20:50:06,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:06,261 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6d222009, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:06,261 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:06,270 INFO L130 PetriNetUnfolder]: 29/178 cut-off events. [2023-08-31 20:50:06,270 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-31 20:50:06,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:06,270 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:50:06,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:06,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:06,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1675607701, now seen corresponding path program 1 times [2023-08-31 20:50:06,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:06,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213252797] [2023-08-31 20:50:06,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:06,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:06,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:06,304 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:06,333 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:06,334 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:06,335 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:06,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:50:06,335 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:06,336 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:06,336 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:06,336 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:50:06,357 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:50:06,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 322 transitions, 704 flow [2023-08-31 20:50:06,478 INFO L130 PetriNetUnfolder]: 141/1132 cut-off events. [2023-08-31 20:50:06,479 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:50:06,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1243 conditions, 1132 events. 141/1132 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5575 event pairs, 23 based on Foata normal form. 0/949 useless extension candidates. Maximal degree in co-relation 749. Up to 80 conditions per place. [2023-08-31 20:50:06,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 322 transitions, 704 flow [2023-08-31 20:50:06,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 322 transitions, 704 flow [2023-08-31 20:50:06,502 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:06,502 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 322 transitions, 704 flow [2023-08-31 20:50:06,502 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 322 transitions, 704 flow [2023-08-31 20:50:06,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 322 transitions, 704 flow [2023-08-31 20:50:06,622 INFO L130 PetriNetUnfolder]: 141/1132 cut-off events. [2023-08-31 20:50:06,622 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:50:06,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1243 conditions, 1132 events. 141/1132 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5575 event pairs, 23 based on Foata normal form. 0/949 useless extension candidates. Maximal degree in co-relation 749. Up to 80 conditions per place. [2023-08-31 20:50:06,702 INFO L119 LiptonReduction]: Number of co-enabled transitions 63800 [2023-08-31 20:50:09,994 INFO L134 LiptonReduction]: Checked pairs total: 293967 [2023-08-31 20:50:09,994 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-08-31 20:50:09,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:09,996 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6d222009, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:09,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:10,013 INFO L130 PetriNetUnfolder]: 42/245 cut-off events. [2023-08-31 20:50:10,013 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-31 20:50:10,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:10,014 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:50:10,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:10,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:10,014 INFO L85 PathProgramCache]: Analyzing trace with hash -610245075, now seen corresponding path program 1 times [2023-08-31 20:50:10,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:10,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132021345] [2023-08-31 20:50:10,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:10,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:10,031 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:10,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:10,044 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:10,044 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:10,044 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:10,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:50:10,045 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:10,045 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:10,045 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:10,045 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:50:10,061 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:50:10,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 368 transitions, 814 flow [2023-08-31 20:50:10,305 INFO L130 PetriNetUnfolder]: 264/1928 cut-off events. [2023-08-31 20:50:10,305 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:50:10,335 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 1928 events. 264/1928 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 11616 event pairs, 72 based on Foata normal form. 0/1633 useless extension candidates. Maximal degree in co-relation 1231. Up to 192 conditions per place. [2023-08-31 20:50:10,335 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 368 transitions, 814 flow [2023-08-31 20:50:10,377 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 333 places, 368 transitions, 814 flow [2023-08-31 20:50:10,377 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:10,377 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 333 places, 368 transitions, 814 flow [2023-08-31 20:50:10,377 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 333 places, 368 transitions, 814 flow [2023-08-31 20:50:10,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 368 transitions, 814 flow [2023-08-31 20:50:10,642 INFO L130 PetriNetUnfolder]: 264/1928 cut-off events. [2023-08-31 20:50:10,642 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:50:10,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2160 conditions, 1928 events. 264/1928 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 11616 event pairs, 72 based on Foata normal form. 0/1633 useless extension candidates. Maximal degree in co-relation 1231. Up to 192 conditions per place. [2023-08-31 20:50:10,727 INFO L119 LiptonReduction]: Number of co-enabled transitions 88968 [2023-08-31 20:50:14,081 INFO L134 LiptonReduction]: Checked pairs total: 374702 [2023-08-31 20:50:14,082 INFO L136 LiptonReduction]: Total number of compositions: 203 [2023-08-31 20:50:14,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:14,083 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6d222009, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:14,083 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:14,104 INFO L130 PetriNetUnfolder]: 58/324 cut-off events. [2023-08-31 20:50:14,104 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-08-31 20:50:14,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:14,104 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:50:14,105 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:14,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:14,105 INFO L85 PathProgramCache]: Analyzing trace with hash 677663744, now seen corresponding path program 1 times [2023-08-31 20:50:14,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:14,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121377508] [2023-08-31 20:50:14,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:14,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:14,138 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:14,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:14,151 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:14,151 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:14,152 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:14,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:50:14,152 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:14,152 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:14,152 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:14,152 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:50:14,176 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:50:14,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 414 transitions, 926 flow [2023-08-31 20:50:14,740 INFO L130 PetriNetUnfolder]: 531/3476 cut-off events. [2023-08-31 20:50:14,741 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:50:14,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3974 conditions, 3476 events. 531/3476 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 25250 event pairs, 201 based on Foata normal form. 0/2973 useless extension candidates. Maximal degree in co-relation 2146. Up to 448 conditions per place. [2023-08-31 20:50:14,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 374 places, 414 transitions, 926 flow [2023-08-31 20:50:14,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 414 transitions, 926 flow [2023-08-31 20:50:14,849 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:14,849 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 414 transitions, 926 flow [2023-08-31 20:50:14,850 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 414 transitions, 926 flow [2023-08-31 20:50:14,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 414 transitions, 926 flow [2023-08-31 20:50:15,436 INFO L130 PetriNetUnfolder]: 531/3476 cut-off events. [2023-08-31 20:50:15,437 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:50:15,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3974 conditions, 3476 events. 531/3476 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 25250 event pairs, 201 based on Foata normal form. 0/2973 useless extension candidates. Maximal degree in co-relation 2146. Up to 448 conditions per place. [2023-08-31 20:50:15,666 INFO L119 LiptonReduction]: Number of co-enabled transitions 118272 [2023-08-31 20:50:19,213 INFO L134 LiptonReduction]: Checked pairs total: 569160 [2023-08-31 20:50:19,213 INFO L136 LiptonReduction]: Total number of compositions: 220 [2023-08-31 20:50:19,214 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:19,215 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6d222009, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:19,215 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:19,249 INFO L130 PetriNetUnfolder]: 79/423 cut-off events. [2023-08-31 20:50:19,250 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-31 20:50:19,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:19,250 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:50:19,250 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:19,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:19,251 INFO L85 PathProgramCache]: Analyzing trace with hash -1424532997, now seen corresponding path program 1 times [2023-08-31 20:50:19,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:19,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916905731] [2023-08-31 20:50:19,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:19,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:19,283 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:19,296 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:19,297 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:19,297 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:19,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:50:19,297 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:19,298 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:19,298 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:19,298 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:50:19,318 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:50:19,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 460 transitions, 1040 flow [2023-08-31 20:50:20,573 INFO L130 PetriNetUnfolder]: 1118/6560 cut-off events. [2023-08-31 20:50:20,573 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:50:20,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7645 conditions, 6560 events. 1118/6560 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 56382 event pairs, 522 based on Foata normal form. 0/5657 useless extension candidates. Maximal degree in co-relation 3958. Up to 1024 conditions per place. [2023-08-31 20:50:20,671 INFO L82 GeneralOperation]: Start removeDead. Operand has 415 places, 460 transitions, 1040 flow [2023-08-31 20:50:20,709 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 415 places, 460 transitions, 1040 flow [2023-08-31 20:50:20,709 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:20,709 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 415 places, 460 transitions, 1040 flow [2023-08-31 20:50:20,710 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 415 places, 460 transitions, 1040 flow [2023-08-31 20:50:20,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 460 transitions, 1040 flow [2023-08-31 20:50:21,853 INFO L130 PetriNetUnfolder]: 1118/6560 cut-off events. [2023-08-31 20:50:21,853 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:50:21,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7645 conditions, 6560 events. 1118/6560 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 56382 event pairs, 522 based on Foata normal form. 0/5657 useless extension candidates. Maximal degree in co-relation 3958. Up to 1024 conditions per place. [2023-08-31 20:50:22,238 INFO L119 LiptonReduction]: Number of co-enabled transitions 151712 [2023-08-31 20:50:25,943 INFO L134 LiptonReduction]: Checked pairs total: 655248 [2023-08-31 20:50:25,943 INFO L136 LiptonReduction]: Total number of compositions: 241 [2023-08-31 20:50:25,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:25,944 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6d222009, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:25,944 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:25,983 INFO L130 PetriNetUnfolder]: 109/553 cut-off events. [2023-08-31 20:50:25,983 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-08-31 20:50:25,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:25,984 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:50:25,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:25,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:25,984 INFO L85 PathProgramCache]: Analyzing trace with hash 471321106, now seen corresponding path program 1 times [2023-08-31 20:50:25,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:25,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574265398] [2023-08-31 20:50:25,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:25,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:25,998 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:26,011 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:26,012 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:26,012 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:26,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:50:26,012 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:26,012 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:26,013 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:26,013 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:50:26,033 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:50:26,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 456 places, 506 transitions, 1156 flow [2023-08-31 20:50:28,848 INFO L130 PetriNetUnfolder]: 2409/12780 cut-off events. [2023-08-31 20:50:28,848 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:50:29,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15157 conditions, 12780 events. 2409/12780 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 127332 event pairs, 1291 based on Foata normal form. 0/11093 useless extension candidates. Maximal degree in co-relation 7627. Up to 2304 conditions per place. [2023-08-31 20:50:29,076 INFO L82 GeneralOperation]: Start removeDead. Operand has 456 places, 506 transitions, 1156 flow [2023-08-31 20:50:29,175 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 456 places, 506 transitions, 1156 flow [2023-08-31 20:50:29,175 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:29,176 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 456 places, 506 transitions, 1156 flow [2023-08-31 20:50:29,176 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 456 places, 506 transitions, 1156 flow [2023-08-31 20:50:29,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 456 places, 506 transitions, 1156 flow [2023-08-31 20:50:31,836 INFO L130 PetriNetUnfolder]: 2409/12780 cut-off events. [2023-08-31 20:50:31,836 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:50:32,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15157 conditions, 12780 events. 2409/12780 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 127332 event pairs, 1291 based on Foata normal form. 0/11093 useless extension candidates. Maximal degree in co-relation 7627. Up to 2304 conditions per place. [2023-08-31 20:50:32,697 INFO L119 LiptonReduction]: Number of co-enabled transitions 189288 [2023-08-31 20:50:36,358 INFO L134 LiptonReduction]: Checked pairs total: 921722 [2023-08-31 20:50:36,359 INFO L136 LiptonReduction]: Total number of compositions: 257 [2023-08-31 20:50:36,360 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:36,360 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6d222009, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:36,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:36,472 INFO L130 PetriNetUnfolder]: 155/734 cut-off events. [2023-08-31 20:50:36,472 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-08-31 20:50:36,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:36,473 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:50:36,473 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:36,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:36,473 INFO L85 PathProgramCache]: Analyzing trace with hash 5637307, now seen corresponding path program 1 times [2023-08-31 20:50:36,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:36,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528387908] [2023-08-31 20:50:36,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:36,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:36,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:36,492 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:36,511 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:36,511 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:36,511 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:36,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:50:36,512 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:36,514 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:36,514 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:36,514 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:50:36,535 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:50:36,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 497 places, 552 transitions, 1274 flow [2023-08-31 20:50:42,350 INFO L130 PetriNetUnfolder]: 5236/25400 cut-off events. [2023-08-31 20:50:42,350 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:50:42,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30606 conditions, 25400 events. 5236/25400 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 288340 event pairs, 3084 based on Foata normal form. 0/22161 useless extension candidates. Maximal degree in co-relation 15137. Up to 5120 conditions per place. [2023-08-31 20:50:42,884 INFO L82 GeneralOperation]: Start removeDead. Operand has 497 places, 552 transitions, 1274 flow [2023-08-31 20:50:43,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 497 places, 552 transitions, 1274 flow [2023-08-31 20:50:43,083 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:50:43,083 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 497 places, 552 transitions, 1274 flow [2023-08-31 20:50:43,084 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 497 places, 552 transitions, 1274 flow [2023-08-31 20:50:43,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 497 places, 552 transitions, 1274 flow [2023-08-31 20:50:49,003 INFO L130 PetriNetUnfolder]: 5236/25400 cut-off events. [2023-08-31 20:50:49,003 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:50:49,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30606 conditions, 25400 events. 5236/25400 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 288340 event pairs, 3084 based on Foata normal form. 0/22161 useless extension candidates. Maximal degree in co-relation 15137. Up to 5120 conditions per place. [2023-08-31 20:50:50,753 INFO L119 LiptonReduction]: Number of co-enabled transitions 231000 [2023-08-31 20:50:54,654 INFO L134 LiptonReduction]: Checked pairs total: 1016403 [2023-08-31 20:50:54,654 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-08-31 20:50:54,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:50:54,655 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6d222009, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:50:54,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:50:54,765 INFO L130 PetriNetUnfolder]: 230/998 cut-off events. [2023-08-31 20:50:54,765 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-08-31 20:50:54,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:50:54,766 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:50:54,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:50:54,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:50:54,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1032564759, now seen corresponding path program 1 times [2023-08-31 20:50:54,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:50:54,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230190258] [2023-08-31 20:50:54,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:50:54,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:50:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:54,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:50:54,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:50:54,833 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:50:54,834 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:50:54,834 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:50:54,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:50:54,834 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:50:54,834 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:50:54,835 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:50:54,835 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:50:54,866 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:50:54,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 538 places, 598 transitions, 1394 flow [2023-08-31 20:51:07,615 INFO L130 PetriNetUnfolder]: 11391/51076 cut-off events. [2023-08-31 20:51:07,616 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:51:08,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62440 conditions, 51076 events. 11391/51076 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 643800 event pairs, 7181 based on Foata normal form. 0/44749 useless extension candidates. Maximal degree in co-relation 30584. Up to 11264 conditions per place. [2023-08-31 20:51:08,995 INFO L82 GeneralOperation]: Start removeDead. Operand has 538 places, 598 transitions, 1394 flow [2023-08-31 20:51:09,601 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 538 places, 598 transitions, 1394 flow [2023-08-31 20:51:09,601 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:51:09,601 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 538 places, 598 transitions, 1394 flow [2023-08-31 20:51:09,601 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 538 places, 598 transitions, 1394 flow [2023-08-31 20:51:09,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 538 places, 598 transitions, 1394 flow [2023-08-31 20:51:22,020 INFO L130 PetriNetUnfolder]: 11391/51076 cut-off events. [2023-08-31 20:51:22,020 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:51:23,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62440 conditions, 51076 events. 11391/51076 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 700. Compared 643800 event pairs, 7181 based on Foata normal form. 0/44749 useless extension candidates. Maximal degree in co-relation 30584. Up to 11264 conditions per place. [2023-08-31 20:51:26,420 INFO L119 LiptonReduction]: Number of co-enabled transitions 276848 [2023-08-31 20:51:30,344 INFO L134 LiptonReduction]: Checked pairs total: 1384945 [2023-08-31 20:51:30,344 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-08-31 20:51:30,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:51:30,345 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6d222009, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:51:30,346 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:51:30,484 INFO L130 PetriNetUnfolder]: 356/1395 cut-off events. [2023-08-31 20:51:30,484 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-08-31 20:51:30,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:51:30,484 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:51:30,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:51:30,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:51:30,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2145075126, now seen corresponding path program 1 times [2023-08-31 20:51:30,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:51:30,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778999924] [2023-08-31 20:51:30,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:51:30,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:51:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:51:30,501 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:51:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:51:30,516 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:51:30,516 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:51:30,516 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:51:30,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:51:30,516 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:51:30,517 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:51:30,517 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:51:30,517 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:51:30,539 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:51:30,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 579 places, 644 transitions, 1516 flow [2023-08-31 20:51:58,638 INFO L130 PetriNetUnfolder]: 24714/103376 cut-off events. [2023-08-31 20:51:58,638 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:52:04,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128067 conditions, 103376 events. 24714/103376 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1322. Compared 1428691 event pairs, 16398 based on Foata normal form. 0/90889 useless extension candidates. Maximal degree in co-relation 62416. Up to 24576 conditions per place. [2023-08-31 20:52:04,467 INFO L82 GeneralOperation]: Start removeDead. Operand has 579 places, 644 transitions, 1516 flow [2023-08-31 20:52:05,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 579 places, 644 transitions, 1516 flow [2023-08-31 20:52:05,873 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:52:05,873 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 579 places, 644 transitions, 1516 flow [2023-08-31 20:52:05,874 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 579 places, 644 transitions, 1516 flow [2023-08-31 20:52:05,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 579 places, 644 transitions, 1516 flow [2023-08-31 20:52:32,699 INFO L130 PetriNetUnfolder]: 24714/103376 cut-off events. [2023-08-31 20:52:32,699 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:52:38,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128067 conditions, 103376 events. 24714/103376 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1322. Compared 1428691 event pairs, 16398 based on Foata normal form. 0/90889 useless extension candidates. Maximal degree in co-relation 62416. Up to 24576 conditions per place. [2023-08-31 20:52:46,452 INFO L119 LiptonReduction]: Number of co-enabled transitions 326832 [2023-08-31 20:52:50,378 INFO L134 LiptonReduction]: Checked pairs total: 1651451 [2023-08-31 20:52:50,378 INFO L136 LiptonReduction]: Total number of compositions: 319 [2023-08-31 20:52:50,379 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:52:50,379 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@6d222009, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:52:50,379 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:52:50,592 INFO L130 PetriNetUnfolder]: 568/2003 cut-off events. [2023-08-31 20:52:50,592 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-08-31 20:52:50,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:52:50,592 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:52:50,593 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:52:50,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:52:50,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1825239777, now seen corresponding path program 1 times [2023-08-31 20:52:50,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:52:50,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85738551] [2023-08-31 20:52:50,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:52:50,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:52:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:50,616 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:52:50,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:52:50,630 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:52:50,631 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:52:50,631 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:52:50,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 20:52:50,631 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:52:50,631 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:52:50,631 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:52:50,632 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 20:52:50,657 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 20:52:50,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 620 places, 690 transitions, 1640 flow [2023-08-31 20:53:54,273 INFO L130 PetriNetUnfolder]: 53397/209948 cut-off events. [2023-08-31 20:53:54,273 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-08-31 20:54:11,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263327 conditions, 209948 events. 53397/209948 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2524. Compared 3175455 event pairs, 36879 based on Foata normal form. 0/185157 useless extension candidates. Maximal degree in co-relation 128041. Up to 53248 conditions per place. [2023-08-31 20:54:11,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 620 places, 690 transitions, 1640 flow