./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_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_61-invariant_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 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --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 20:58:19,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:58:19,477 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:58:19,502 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:58:19,502 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:58:19,504 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:58:19,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:58:19,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:58:19,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:58:19,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:58:19,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:58:19,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:58:19,512 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:58:19,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:58:19,518 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:58:19,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:58:19,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:58:19,522 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:58:19,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:58:19,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:58:19,542 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:58:19,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:58:19,545 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:58:19,546 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:58:19,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:58:19,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:58:19,555 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:58:19,556 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:58:19,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:58:19,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:58:19,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:58:19,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:58:19,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:58:19,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:58:19,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:58:19,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:58:19,565 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:58:19,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:58:19,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:58:19,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:58:19,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:58:19,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:58:19,604 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:58:19,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:58:19,606 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:58:19,606 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:58:19,607 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:58:19,607 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:58:19,608 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:58:19,608 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:58:19,608 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:58:19,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:58:19,609 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:58:19,609 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:58:19,610 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:58:19,610 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:58:19,610 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:58:19,610 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:58:19,610 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:58:19,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:58:19,611 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:58:19,611 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:58:19,611 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:58:19,611 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:58:19,611 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:58:19,612 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:58:19,612 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:58:19,612 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:58:19,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:58:19,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:58:19,613 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:58:19,613 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:58:19,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:58:19,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:58:19,614 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:58:19,614 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:58:19,614 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:58:19,614 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:58:19,614 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:58:19,614 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:58:19,950 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:58:19,970 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:58:19,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:58:19,972 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:58:19,973 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:58:19,974 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-08-31 20:58:21,158 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:58:21,469 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:58:21,473 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-08-31 20:58:21,485 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c22ce26f0/bc3d0b71b11947a2abb274cbd310d2e7/FLAG572839aa7 [2023-08-31 20:58:21,506 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c22ce26f0/bc3d0b71b11947a2abb274cbd310d2e7 [2023-08-31 20:58:21,510 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:58:21,512 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:58:21,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:58:21,516 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:58:21,519 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:58:21,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:58:21" (1/1) ... [2023-08-31 20:58:21,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@cdb577a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:21, skipping insertion in model container [2023-08-31 20:58:21,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:58:21" (1/1) ... [2023-08-31 20:58:21,530 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:58:21,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:58:21,898 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_61-invariant_racing.i[30176,30189] [2023-08-31 20:58:21,923 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:58:21,939 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:58:21,983 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_61-invariant_racing.i[30176,30189] [2023-08-31 20:58:22,008 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:58:22,068 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:58:22,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:22 WrapperNode [2023-08-31 20:58:22,069 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:58:22,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:58:22,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:58:22,070 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:58:22,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:22" (1/1) ... [2023-08-31 20:58:22,105 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:22" (1/1) ... [2023-08-31 20:58:22,137 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2023-08-31 20:58:22,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:58:22,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:58:22,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:58:22,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:58:22,148 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:22" (1/1) ... [2023-08-31 20:58:22,148 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:22" (1/1) ... [2023-08-31 20:58:22,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:22" (1/1) ... [2023-08-31 20:58:22,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:22" (1/1) ... [2023-08-31 20:58:22,172 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:22" (1/1) ... [2023-08-31 20:58:22,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:22" (1/1) ... [2023-08-31 20:58:22,186 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:22" (1/1) ... [2023-08-31 20:58:22,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:22" (1/1) ... [2023-08-31 20:58:22,196 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:58:22,197 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:58:22,197 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:58:22,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:58:22,203 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:22" (1/1) ... [2023-08-31 20:58:22,208 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:58:22,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:58:22,238 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 20:58:22,272 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 20:58:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:58:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:58:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:58:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:58:22,279 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:58:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:58:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:58:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:58:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:58:22,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:58:22,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:58:22,282 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 20:58:22,386 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:58:22,387 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:58:22,645 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:58:22,652 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:58:22,653 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-31 20:58:22,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:58:22 BoogieIcfgContainer [2023-08-31 20:58:22,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:58:22,657 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:58:22,657 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:58:22,660 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:58:22,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:58:21" (1/3) ... [2023-08-31 20:58:22,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7846ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:58:22, skipping insertion in model container [2023-08-31 20:58:22,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:58:22" (2/3) ... [2023-08-31 20:58:22,661 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7846ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:58:22, skipping insertion in model container [2023-08-31 20:58:22,661 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:58:22" (3/3) ... [2023-08-31 20:58:22,662 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2023-08-31 20:58:22,670 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:58:22,678 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:58:22,679 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-31 20:58:22,679 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:58:22,741 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:58:22,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 167 transitions, 342 flow [2023-08-31 20:58:22,849 INFO L130 PetriNetUnfolder]: 30/246 cut-off events. [2023-08-31 20:58:22,849 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:58:22,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 30/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 951 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2023-08-31 20:58:22,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 167 transitions, 342 flow [2023-08-31 20:58:22,862 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 162 transitions, 329 flow [2023-08-31 20:58:22,865 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:22,876 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 162 transitions, 329 flow [2023-08-31 20:58:22,879 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 162 transitions, 329 flow [2023-08-31 20:58:22,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 162 transitions, 329 flow [2023-08-31 20:58:22,938 INFO L130 PetriNetUnfolder]: 29/241 cut-off events. [2023-08-31 20:58:22,939 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:58:22,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 241 events. 29/241 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 944 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2023-08-31 20:58:22,945 INFO L119 LiptonReduction]: Number of co-enabled transitions 8500 [2023-08-31 20:58:25,511 INFO L134 LiptonReduction]: Checked pairs total: 31148 [2023-08-31 20:58:25,511 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-31 20:58:25,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:25,530 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;@704d4a61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:25,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:25,535 INFO L130 PetriNetUnfolder]: 2/33 cut-off events. [2023-08-31 20:58:25,536 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:58:25,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:25,537 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:58:25,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:25,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:25,542 INFO L85 PathProgramCache]: Analyzing trace with hash 253831636, now seen corresponding path program 1 times [2023-08-31 20:58:25,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:25,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862700953] [2023-08-31 20:58:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:25,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:25,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:25,691 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:25,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:25,755 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:25,756 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:25,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:58:25,759 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:25,764 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:25,765 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:25,765 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:58:25,797 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:58:25,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 219 transitions, 456 flow [2023-08-31 20:58:25,881 INFO L130 PetriNetUnfolder]: 51/407 cut-off events. [2023-08-31 20:58:25,882 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:58:25,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 407 events. 51/407 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1802 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 248. Up to 9 conditions per place. [2023-08-31 20:58:25,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 219 transitions, 456 flow [2023-08-31 20:58:25,889 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 219 transitions, 456 flow [2023-08-31 20:58:25,889 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:25,889 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 219 transitions, 456 flow [2023-08-31 20:58:25,889 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 219 transitions, 456 flow [2023-08-31 20:58:25,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 219 transitions, 456 flow [2023-08-31 20:58:25,943 INFO L130 PetriNetUnfolder]: 51/407 cut-off events. [2023-08-31 20:58:25,943 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:58:25,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 407 events. 51/407 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1802 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 248. Up to 9 conditions per place. [2023-08-31 20:58:25,967 INFO L119 LiptonReduction]: Number of co-enabled transitions 23100 [2023-08-31 20:58:28,323 INFO L134 LiptonReduction]: Checked pairs total: 105040 [2023-08-31 20:58:28,323 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-31 20:58:28,324 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:28,325 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;@704d4a61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:28,326 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:28,332 INFO L130 PetriNetUnfolder]: 13/99 cut-off events. [2023-08-31 20:58:28,333 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 20:58:28,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:28,333 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:58:28,335 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:28,335 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:28,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1537094479, now seen corresponding path program 1 times [2023-08-31 20:58:28,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:28,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709978220] [2023-08-31 20:58:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:28,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:28,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:28,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:28,417 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:28,420 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:28,421 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:28,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:58:28,422 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:28,423 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:28,424 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:28,424 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:58:28,451 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:58:28,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 271 transitions, 572 flow [2023-08-31 20:58:28,544 INFO L130 PetriNetUnfolder]: 77/611 cut-off events. [2023-08-31 20:58:28,544 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:58:28,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 611 events. 77/611 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2863 event pairs, 1 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 415. Up to 16 conditions per place. [2023-08-31 20:58:28,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 271 transitions, 572 flow [2023-08-31 20:58:28,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 271 transitions, 572 flow [2023-08-31 20:58:28,559 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:28,560 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 271 transitions, 572 flow [2023-08-31 20:58:28,560 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 271 transitions, 572 flow [2023-08-31 20:58:28,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 271 transitions, 572 flow [2023-08-31 20:58:28,631 INFO L130 PetriNetUnfolder]: 77/611 cut-off events. [2023-08-31 20:58:28,631 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:58:28,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 611 events. 77/611 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2863 event pairs, 1 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 415. Up to 16 conditions per place. [2023-08-31 20:58:28,661 INFO L119 LiptonReduction]: Number of co-enabled transitions 42600 [2023-08-31 20:58:31,113 INFO L134 LiptonReduction]: Checked pairs total: 234973 [2023-08-31 20:58:31,114 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-31 20:58:31,116 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:31,117 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;@704d4a61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:31,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:31,127 INFO L130 PetriNetUnfolder]: 25/172 cut-off events. [2023-08-31 20:58:31,128 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 20:58:31,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:31,128 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:58:31,129 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:31,129 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:31,129 INFO L85 PathProgramCache]: Analyzing trace with hash -766895374, now seen corresponding path program 1 times [2023-08-31 20:58:31,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:31,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682995228] [2023-08-31 20:58:31,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:31,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:31,151 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:31,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:31,169 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:31,169 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:31,170 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:31,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:58:31,170 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:31,171 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:31,171 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:31,171 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:58:31,193 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:58:31,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 323 transitions, 690 flow [2023-08-31 20:58:31,339 INFO L130 PetriNetUnfolder]: 115/903 cut-off events. [2023-08-31 20:58:31,339 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:58:31,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 903 events. 115/903 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4467 event pairs, 6 based on Foata normal form. 0/727 useless extension candidates. Maximal degree in co-relation 631. Up to 32 conditions per place. [2023-08-31 20:58:31,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 323 transitions, 690 flow [2023-08-31 20:58:31,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 323 transitions, 690 flow [2023-08-31 20:58:31,358 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:31,358 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 323 transitions, 690 flow [2023-08-31 20:58:31,358 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 323 transitions, 690 flow [2023-08-31 20:58:31,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 323 transitions, 690 flow [2023-08-31 20:58:31,495 INFO L130 PetriNetUnfolder]: 115/903 cut-off events. [2023-08-31 20:58:31,495 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:58:31,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 958 conditions, 903 events. 115/903 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4467 event pairs, 6 based on Foata normal form. 0/727 useless extension candidates. Maximal degree in co-relation 631. Up to 32 conditions per place. [2023-08-31 20:58:31,533 INFO L119 LiptonReduction]: Number of co-enabled transitions 67400 [2023-08-31 20:58:34,091 INFO L134 LiptonReduction]: Checked pairs total: 335291 [2023-08-31 20:58:34,091 INFO L136 LiptonReduction]: Total number of compositions: 161 [2023-08-31 20:58:34,093 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:34,094 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;@704d4a61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:34,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:34,111 INFO L130 PetriNetUnfolder]: 42/259 cut-off events. [2023-08-31 20:58:34,112 INFO L131 PetriNetUnfolder]: For 22/22 co-relation queries the response was YES. [2023-08-31 20:58:34,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:34,112 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:58:34,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:34,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:34,113 INFO L85 PathProgramCache]: Analyzing trace with hash 351585967, now seen corresponding path program 1 times [2023-08-31 20:58:34,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:34,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070070563] [2023-08-31 20:58:34,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:34,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:34,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:34,132 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:34,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:34,150 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:34,150 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:34,150 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:34,150 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:58:34,150 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:34,151 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:34,151 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:34,151 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:58:34,179 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:58:34,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 375 transitions, 810 flow [2023-08-31 20:58:34,388 INFO L130 PetriNetUnfolder]: 181/1375 cut-off events. [2023-08-31 20:58:34,389 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:58:34,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 1375 events. 181/1375 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7499 event pairs, 23 based on Foata normal form. 0/1123 useless extension candidates. Maximal degree in co-relation 948. Up to 80 conditions per place. [2023-08-31 20:58:34,408 INFO L82 GeneralOperation]: Start removeDead. Operand has 335 places, 375 transitions, 810 flow [2023-08-31 20:58:34,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 335 places, 375 transitions, 810 flow [2023-08-31 20:58:34,422 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:34,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 335 places, 375 transitions, 810 flow [2023-08-31 20:58:34,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 335 places, 375 transitions, 810 flow [2023-08-31 20:58:34,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 335 places, 375 transitions, 810 flow [2023-08-31 20:58:34,661 INFO L130 PetriNetUnfolder]: 181/1375 cut-off events. [2023-08-31 20:58:34,662 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:58:34,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 1375 events. 181/1375 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 7499 event pairs, 23 based on Foata normal form. 0/1123 useless extension candidates. Maximal degree in co-relation 948. Up to 80 conditions per place. [2023-08-31 20:58:34,729 INFO L119 LiptonReduction]: Number of co-enabled transitions 97500 [2023-08-31 20:58:37,312 INFO L134 LiptonReduction]: Checked pairs total: 497392 [2023-08-31 20:58:37,312 INFO L136 LiptonReduction]: Total number of compositions: 182 [2023-08-31 20:58:37,314 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:37,315 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;@704d4a61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:37,315 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:37,342 INFO L130 PetriNetUnfolder]: 60/353 cut-off events. [2023-08-31 20:58:37,342 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-31 20:58:37,342 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:37,342 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:58:37,343 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:37,343 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:37,343 INFO L85 PathProgramCache]: Analyzing trace with hash -616152380, now seen corresponding path program 1 times [2023-08-31 20:58:37,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:37,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228870785] [2023-08-31 20:58:37,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:37,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:37,380 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:37,423 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:37,423 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:37,425 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:37,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:58:37,426 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:37,427 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:37,429 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:37,429 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:58:37,466 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:58:37,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 381 places, 427 transitions, 932 flow [2023-08-31 20:58:37,924 INFO L130 PetriNetUnfolder]: 311/2215 cut-off events. [2023-08-31 20:58:37,924 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:58:37,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 2215 events. 311/2215 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 14016 event pairs, 72 based on Foata normal form. 0/1839 useless extension candidates. Maximal degree in co-relation 1474. Up to 192 conditions per place. [2023-08-31 20:58:37,956 INFO L82 GeneralOperation]: Start removeDead. Operand has 381 places, 427 transitions, 932 flow [2023-08-31 20:58:37,972 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 381 places, 427 transitions, 932 flow [2023-08-31 20:58:37,972 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:37,973 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 381 places, 427 transitions, 932 flow [2023-08-31 20:58:37,973 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 381 places, 427 transitions, 932 flow [2023-08-31 20:58:37,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 381 places, 427 transitions, 932 flow [2023-08-31 20:58:38,418 INFO L130 PetriNetUnfolder]: 311/2215 cut-off events. [2023-08-31 20:58:38,419 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:58:38,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 2215 events. 311/2215 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 14016 event pairs, 72 based on Foata normal form. 0/1839 useless extension candidates. Maximal degree in co-relation 1474. Up to 192 conditions per place. [2023-08-31 20:58:38,540 INFO L119 LiptonReduction]: Number of co-enabled transitions 132900 [2023-08-31 20:58:41,325 INFO L134 LiptonReduction]: Checked pairs total: 685184 [2023-08-31 20:58:41,326 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-08-31 20:58:41,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:41,328 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;@704d4a61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:41,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:41,376 INFO L130 PetriNetUnfolder]: 80/455 cut-off events. [2023-08-31 20:58:41,376 INFO L131 PetriNetUnfolder]: For 70/70 co-relation queries the response was YES. [2023-08-31 20:58:41,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:41,376 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:58:41,377 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:41,377 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:41,377 INFO L85 PathProgramCache]: Analyzing trace with hash -362440164, now seen corresponding path program 1 times [2023-08-31 20:58:41,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:41,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346557226] [2023-08-31 20:58:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:41,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:41,399 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:41,434 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:41,438 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:41,438 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:41,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:58:41,438 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:41,440 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:41,441 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:41,441 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:58:41,485 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:58:41,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 479 transitions, 1056 flow [2023-08-31 20:58:42,318 INFO L130 PetriNetUnfolder]: 585/3807 cut-off events. [2023-08-31 20:58:42,318 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:58:42,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4305 conditions, 3807 events. 585/3807 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 27923 event pairs, 201 based on Foata normal form. 0/3211 useless extension candidates. Maximal degree in co-relation 2433. Up to 448 conditions per place. [2023-08-31 20:58:42,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 427 places, 479 transitions, 1056 flow [2023-08-31 20:58:42,433 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 427 places, 479 transitions, 1056 flow [2023-08-31 20:58:42,434 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:42,434 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 427 places, 479 transitions, 1056 flow [2023-08-31 20:58:42,434 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 427 places, 479 transitions, 1056 flow [2023-08-31 20:58:42,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 427 places, 479 transitions, 1056 flow [2023-08-31 20:58:43,316 INFO L130 PetriNetUnfolder]: 585/3807 cut-off events. [2023-08-31 20:58:43,317 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:58:43,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4305 conditions, 3807 events. 585/3807 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 27923 event pairs, 201 based on Foata normal form. 0/3211 useless extension candidates. Maximal degree in co-relation 2433. Up to 448 conditions per place. [2023-08-31 20:58:43,525 INFO L119 LiptonReduction]: Number of co-enabled transitions 173600 [2023-08-31 20:58:46,800 INFO L134 LiptonReduction]: Checked pairs total: 911221 [2023-08-31 20:58:46,801 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-08-31 20:58:46,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:46,803 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;@704d4a61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:46,803 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:46,849 INFO L130 PetriNetUnfolder]: 105/569 cut-off events. [2023-08-31 20:58:46,849 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 20:58:46,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:46,850 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:58:46,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:46,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:46,850 INFO L85 PathProgramCache]: Analyzing trace with hash -761206107, now seen corresponding path program 1 times [2023-08-31 20:58:46,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:46,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46467951] [2023-08-31 20:58:46,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:46,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:46,870 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:46,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:46,888 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:46,888 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:46,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:58:46,888 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:46,889 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:46,889 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:46,889 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:58:46,919 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:58:46,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 473 places, 531 transitions, 1182 flow [2023-08-31 20:58:48,376 INFO L130 PetriNetUnfolder]: 1179/6935 cut-off events. [2023-08-31 20:58:48,377 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:58:48,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8020 conditions, 6935 events. 1179/6935 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 59537 event pairs, 522 based on Foata normal form. 0/5927 useless extension candidates. Maximal degree in co-relation 4289. Up to 1024 conditions per place. [2023-08-31 20:58:48,466 INFO L82 GeneralOperation]: Start removeDead. Operand has 473 places, 531 transitions, 1182 flow [2023-08-31 20:58:48,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 473 places, 531 transitions, 1182 flow [2023-08-31 20:58:48,543 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:48,543 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 473 places, 531 transitions, 1182 flow [2023-08-31 20:58:48,544 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 473 places, 531 transitions, 1182 flow [2023-08-31 20:58:48,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 473 places, 531 transitions, 1182 flow [2023-08-31 20:58:50,038 INFO L130 PetriNetUnfolder]: 1179/6935 cut-off events. [2023-08-31 20:58:50,038 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:58:50,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8020 conditions, 6935 events. 1179/6935 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 59537 event pairs, 522 based on Foata normal form. 0/5927 useless extension candidates. Maximal degree in co-relation 4289. Up to 1024 conditions per place. [2023-08-31 20:58:50,450 INFO L119 LiptonReduction]: Number of co-enabled transitions 219600 [2023-08-31 20:58:53,369 INFO L134 LiptonReduction]: Checked pairs total: 1002312 [2023-08-31 20:58:53,369 INFO L136 LiptonReduction]: Total number of compositions: 242 [2023-08-31 20:58:53,371 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:53,371 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;@704d4a61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:53,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:53,449 INFO L130 PetriNetUnfolder]: 124/679 cut-off events. [2023-08-31 20:58:53,449 INFO L131 PetriNetUnfolder]: For 171/171 co-relation queries the response was YES. [2023-08-31 20:58:53,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:53,450 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:58:53,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:53,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:53,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1313099305, now seen corresponding path program 1 times [2023-08-31 20:58:53,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:53,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649639196] [2023-08-31 20:58:53,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:53,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:53,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:53,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:53,524 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:53,524 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:53,525 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:53,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:58:53,525 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:53,527 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:53,527 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:53,528 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:58:53,563 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:58:53,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 519 places, 583 transitions, 1310 flow [2023-08-31 20:58:57,047 INFO L130 PetriNetUnfolder]: 2477/13199 cut-off events. [2023-08-31 20:58:57,047 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:58:57,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15576 conditions, 13199 events. 2477/13199 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 131765 event pairs, 1291 based on Foata normal form. 0/11395 useless extension candidates. Maximal degree in co-relation 8002. Up to 2304 conditions per place. [2023-08-31 20:58:57,260 INFO L82 GeneralOperation]: Start removeDead. Operand has 519 places, 583 transitions, 1310 flow [2023-08-31 20:58:57,375 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 519 places, 583 transitions, 1310 flow [2023-08-31 20:58:57,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:57,375 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 519 places, 583 transitions, 1310 flow [2023-08-31 20:58:57,375 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 519 places, 583 transitions, 1310 flow [2023-08-31 20:58:57,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 519 places, 583 transitions, 1310 flow [2023-08-31 20:59:00,680 INFO L130 PetriNetUnfolder]: 2477/13199 cut-off events. [2023-08-31 20:59:00,681 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:59:00,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15576 conditions, 13199 events. 2477/13199 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 131765 event pairs, 1291 based on Foata normal form. 0/11395 useless extension candidates. Maximal degree in co-relation 8002. Up to 2304 conditions per place. [2023-08-31 20:59:01,616 INFO L119 LiptonReduction]: Number of co-enabled transitions 270900 [2023-08-31 20:59:04,825 INFO L134 LiptonReduction]: Checked pairs total: 1442198 [2023-08-31 20:59:04,825 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-08-31 20:59:04,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:59:04,827 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;@704d4a61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:59:04,827 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:59:04,924 INFO L130 PetriNetUnfolder]: 160/832 cut-off events. [2023-08-31 20:59:04,924 INFO L131 PetriNetUnfolder]: For 254/254 co-relation queries the response was YES. [2023-08-31 20:59:04,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:59:04,924 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:59:04,925 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:59:04,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:59:04,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1971964315, now seen corresponding path program 1 times [2023-08-31 20:59:04,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:59:04,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238804912] [2023-08-31 20:59:04,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:59:04,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:59:04,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:59:04,945 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:59:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:59:04,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:59:04,976 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:59:04,976 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:59:04,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:59:04,976 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:59:04,977 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:59:04,978 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:59:04,978 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:59:05,017 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:59:05,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 565 places, 635 transitions, 1440 flow [2023-08-31 20:59:12,232 INFO L130 PetriNetUnfolder]: 5311/25863 cut-off events. [2023-08-31 20:59:12,233 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:59:12,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31069 conditions, 25863 events. 5311/25863 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 291267 event pairs, 3084 based on Foata normal form. 0/22495 useless extension candidates. Maximal degree in co-relation 15556. Up to 5120 conditions per place. [2023-08-31 20:59:12,863 INFO L82 GeneralOperation]: Start removeDead. Operand has 565 places, 635 transitions, 1440 flow [2023-08-31 20:59:13,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 565 places, 635 transitions, 1440 flow [2023-08-31 20:59:13,147 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:59:13,147 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 565 places, 635 transitions, 1440 flow [2023-08-31 20:59:13,147 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 565 places, 635 transitions, 1440 flow [2023-08-31 20:59:13,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 565 places, 635 transitions, 1440 flow [2023-08-31 20:59:20,715 INFO L130 PetriNetUnfolder]: 5311/25863 cut-off events. [2023-08-31 20:59:20,715 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:59:21,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31069 conditions, 25863 events. 5311/25863 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 291267 event pairs, 3084 based on Foata normal form. 0/22495 useless extension candidates. Maximal degree in co-relation 15556. Up to 5120 conditions per place. [2023-08-31 20:59:23,007 INFO L119 LiptonReduction]: Number of co-enabled transitions 327500 [2023-08-31 20:59:26,220 INFO L134 LiptonReduction]: Checked pairs total: 1771535 [2023-08-31 20:59:26,220 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-08-31 20:59:26,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:59:26,222 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;@704d4a61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:59:26,222 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:59:26,338 INFO L130 PetriNetUnfolder]: 222/1046 cut-off events. [2023-08-31 20:59:26,338 INFO L131 PetriNetUnfolder]: For 371/371 co-relation queries the response was YES. [2023-08-31 20:59:26,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:59:26,338 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:59:26,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:59:26,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:59:26,339 INFO L85 PathProgramCache]: Analyzing trace with hash -419685071, now seen corresponding path program 1 times [2023-08-31 20:59:26,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:59:26,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847328416] [2023-08-31 20:59:26,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:59:26,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:59:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:59:26,358 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:59:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:59:26,376 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:59:26,377 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:59:26,377 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:59:26,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:59:26,377 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:59:26,378 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:59:26,378 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:59:26,378 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:59:26,417 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:59:26,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 611 places, 687 transitions, 1572 flow [2023-08-31 20:59:42,672 INFO L130 PetriNetUnfolder]: 11473/51583 cut-off events. [2023-08-31 20:59:42,672 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:59:45,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62947 conditions, 51583 events. 11473/51583 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 649405 event pairs, 7181 based on Foata normal form. 0/45115 useless extension candidates. Maximal degree in co-relation 31048. Up to 11264 conditions per place. [2023-08-31 20:59:45,053 INFO L82 GeneralOperation]: Start removeDead. Operand has 611 places, 687 transitions, 1572 flow [2023-08-31 20:59:45,952 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 611 places, 687 transitions, 1572 flow [2023-08-31 20:59:45,952 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:59:45,953 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 611 places, 687 transitions, 1572 flow [2023-08-31 20:59:45,953 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 611 places, 687 transitions, 1572 flow [2023-08-31 20:59:45,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 611 places, 687 transitions, 1572 flow [2023-08-31 21:00:01,986 INFO L130 PetriNetUnfolder]: 11473/51583 cut-off events. [2023-08-31 21:00:01,986 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 21:00:04,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62947 conditions, 51583 events. 11473/51583 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 649405 event pairs, 7181 based on Foata normal form. 0/45115 useless extension candidates. Maximal degree in co-relation 31048. Up to 11264 conditions per place. [2023-08-31 21:00:09,871 INFO L119 LiptonReduction]: Number of co-enabled transitions 389400 [2023-08-31 21:00:13,201 INFO L134 LiptonReduction]: Checked pairs total: 2121475 [2023-08-31 21:00:13,202 INFO L136 LiptonReduction]: Total number of compositions: 300 [2023-08-31 21:00:13,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:00:13,203 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;@704d4a61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:00:13,203 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 21:00:13,344 INFO L130 PetriNetUnfolder]: 285/1272 cut-off events. [2023-08-31 21:00:13,344 INFO L131 PetriNetUnfolder]: For 535/535 co-relation queries the response was YES. [2023-08-31 21:00:13,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:00:13,344 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 21:00:13,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:00:13,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:00:13,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1024914848, now seen corresponding path program 1 times [2023-08-31 21:00:13,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:00:13,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610401342] [2023-08-31 21:00:13,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:00:13,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:00:13,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:00:13,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:00:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:00:13,390 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:00:13,390 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:00:13,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 21:00:13,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 21:00:13,391 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:00:13,391 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 21:00:13,391 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:00:13,392 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 21:00:13,429 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 21:00:13,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 657 places, 739 transitions, 1706 flow [2023-08-31 21:00:51,037 INFO L130 PetriNetUnfolder]: 24803/103927 cut-off events. [2023-08-31 21:00:51,037 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 21:00:57,211 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128618 conditions, 103927 events. 24803/103927 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 1439111 event pairs, 16398 based on Foata normal form. 0/91287 useless extension candidates. Maximal degree in co-relation 62926. Up to 24576 conditions per place. [2023-08-31 21:00:57,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 657 places, 739 transitions, 1706 flow [2023-08-31 21:00:59,602 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 657 places, 739 transitions, 1706 flow [2023-08-31 21:00:59,602 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:00:59,602 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 657 places, 739 transitions, 1706 flow [2023-08-31 21:00:59,602 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 657 places, 739 transitions, 1706 flow [2023-08-31 21:00:59,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 657 places, 739 transitions, 1706 flow [2023-08-31 21:01:37,692 INFO L130 PetriNetUnfolder]: 24803/103927 cut-off events. [2023-08-31 21:01:37,692 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 21:01:46,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128618 conditions, 103927 events. 24803/103927 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1326. Compared 1439111 event pairs, 16398 based on Foata normal form. 0/91287 useless extension candidates. Maximal degree in co-relation 62926. Up to 24576 conditions per place. [2023-08-31 21:02:02,410 INFO L119 LiptonReduction]: Number of co-enabled transitions 456600 [2023-08-31 21:02:05,996 INFO L134 LiptonReduction]: Checked pairs total: 2509389 [2023-08-31 21:02:05,996 INFO L136 LiptonReduction]: Total number of compositions: 324 [2023-08-31 21:02:05,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:02:05,998 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;@704d4a61, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:02:05,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 21:02:06,202 INFO L130 PetriNetUnfolder]: 406/1628 cut-off events. [2023-08-31 21:02:06,202 INFO L131 PetriNetUnfolder]: For 763/763 co-relation queries the response was YES. [2023-08-31 21:02:06,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:02:06,202 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 21:02:06,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:02:06,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:02:06,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1156375208, now seen corresponding path program 1 times [2023-08-31 21:02:06,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:02:06,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38235320] [2023-08-31 21:02:06,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:02:06,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:02:06,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:02:06,226 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:02:06,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:02:06,279 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:02:06,280 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:02:06,280 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 21:02:06,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 21:02:06,280 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:02:06,283 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 21:02:06,283 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:02:06,283 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 21:02:06,326 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 21:02:06,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 703 places, 791 transitions, 1842 flow [2023-08-31 21:03:43,334 INFO L130 PetriNetUnfolder]: 53493/210543 cut-off events. [2023-08-31 21:03:43,335 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-08-31 21:03:59,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263922 conditions, 210543 events. 53493/210543 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2544. Compared 3180990 event pairs, 36879 based on Foata normal form. 0/185587 useless extension candidates. Maximal degree in co-relation 128597. Up to 53248 conditions per place. [2023-08-31 21:03:59,166 INFO L82 GeneralOperation]: Start removeDead. Operand has 703 places, 791 transitions, 1842 flow [2023-08-31 21:04:06,669 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 703 places, 791 transitions, 1842 flow [2023-08-31 21:04:06,684 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:04:06,685 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 703 places, 791 transitions, 1842 flow [2023-08-31 21:04:06,685 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 703 places, 791 transitions, 1842 flow [2023-08-31 21:04:06,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 703 places, 791 transitions, 1842 flow