./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:29:35,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:29:35,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:29:35,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:29:35,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:29:35,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:29:35,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:29:35,412 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:29:35,413 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:29:35,416 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:29:35,417 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:29:35,419 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:29:35,419 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:29:35,420 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:29:35,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:29:35,425 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:29:35,426 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:29:35,427 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:29:35,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:29:35,433 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:29:35,434 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:29:35,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:29:35,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:29:35,435 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:29:35,441 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:29:35,441 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:29:35,441 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:29:35,443 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:29:35,443 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:29:35,444 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:29:35,444 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:29:35,445 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:29:35,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:29:35,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:29:35,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:29:35,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:29:35,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:29:35,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:29:35,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:29:35,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:29:35,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:29:35,451 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:29:35,477 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:29:35,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:29:35,478 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:29:35,478 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:29:35,479 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:29:35,479 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:29:35,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:29:35,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:29:35,480 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:29:35,480 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:29:35,480 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:29:35,480 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:29:35,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:29:35,481 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:29:35,481 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:29:35,481 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:29:35,481 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:29:35,481 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:29:35,481 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:29:35,482 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:29:35,482 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:29:35,482 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:29:35,482 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:29:35,482 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:29:35,482 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:29:35,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:29:35,483 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:29:35,483 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:29:35,483 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:29:35,483 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:29:35,483 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:29:35,483 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:29:35,483 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:29:35,484 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:29:35,484 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45d1947e02656e790dafd6ca03f6eadb14d0b370e2217b75740af9998d975bef Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:29:35,720 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:29:35,733 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:29:35,735 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:29:35,736 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:29:35,736 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:29:35,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-09-01 00:29:36,599 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:29:36,838 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:29:36,839 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_07-cond_racing2.i [2023-09-01 00:29:36,847 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/998c84702/686eb3f779274350a1f976d15011a2f4/FLAG269c305e9 [2023-09-01 00:29:36,858 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/998c84702/686eb3f779274350a1f976d15011a2f4 [2023-09-01 00:29:36,860 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:29:36,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:29:36,863 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:29:36,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:29:36,865 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:29:36,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:29:36" (1/1) ... [2023-09-01 00:29:36,866 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12828882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:36, skipping insertion in model container [2023-09-01 00:29:36,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:29:36" (1/1) ... [2023-09-01 00:29:36,871 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:29:36,913 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:29:37,238 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_07-cond_racing2.i[41322,41335] [2023-09-01 00:29:37,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:29:37,270 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:29:37,301 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_07-cond_racing2.i[41322,41335] [2023-09-01 00:29:37,314 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:29:37,408 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:29:37,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:37 WrapperNode [2023-09-01 00:29:37,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:29:37,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:29:37,410 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:29:37,410 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:29:37,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:37" (1/1) ... [2023-09-01 00:29:37,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:37" (1/1) ... [2023-09-01 00:29:37,462 INFO L138 Inliner]: procedures = 270, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 90 [2023-09-01 00:29:37,463 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:29:37,464 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:29:37,464 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:29:37,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:29:37,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:37" (1/1) ... [2023-09-01 00:29:37,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:37" (1/1) ... [2023-09-01 00:29:37,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:37" (1/1) ... [2023-09-01 00:29:37,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:37" (1/1) ... [2023-09-01 00:29:37,489 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:37" (1/1) ... [2023-09-01 00:29:37,496 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:37" (1/1) ... [2023-09-01 00:29:37,498 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:37" (1/1) ... [2023-09-01 00:29:37,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:37" (1/1) ... [2023-09-01 00:29:37,504 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:29:37,507 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:29:37,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:29:37,508 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:29:37,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:37" (1/1) ... [2023-09-01 00:29:37,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:29:37,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:29:37,528 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 00:29:37,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 00:29:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:29:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:29:37,556 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:29:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:29:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:29:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:29:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:29:37,557 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:29:37,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:29:37,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:29:37,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:29:37,559 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:29:37,669 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:29:37,671 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:29:37,815 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:29:37,820 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:29:37,820 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 00:29:37,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:29:37 BoogieIcfgContainer [2023-09-01 00:29:37,821 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:29:37,823 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:29:37,823 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:29:37,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:29:37,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:29:36" (1/3) ... [2023-09-01 00:29:37,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700402d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:29:37, skipping insertion in model container [2023-09-01 00:29:37,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:29:37" (2/3) ... [2023-09-01 00:29:37,825 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700402d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:29:37, skipping insertion in model container [2023-09-01 00:29:37,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:29:37" (3/3) ... [2023-09-01 00:29:37,826 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_07-cond_racing2.i [2023-09-01 00:29:37,836 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:29:37,837 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 00:29:37,837 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:29:37,873 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:29:37,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 129 transitions, 266 flow [2023-09-01 00:29:37,929 INFO L130 PetriNetUnfolder]: 23/178 cut-off events. [2023-09-01 00:29:37,930 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:29:37,933 INFO L83 FinitePrefix]: Finished finitePrefix Result has 184 conditions, 178 events. 23/178 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 438 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2023-09-01 00:29:37,933 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 129 transitions, 266 flow [2023-09-01 00:29:37,936 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 113 places, 124 transitions, 253 flow [2023-09-01 00:29:37,938 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:29:37,943 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 113 places, 124 transitions, 253 flow [2023-09-01 00:29:37,945 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 113 places, 124 transitions, 253 flow [2023-09-01 00:29:37,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 124 transitions, 253 flow [2023-09-01 00:29:37,966 INFO L130 PetriNetUnfolder]: 22/173 cut-off events. [2023-09-01 00:29:37,966 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:29:37,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 173 events. 22/173 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 423 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 89. Up to 6 conditions per place. [2023-09-01 00:29:37,968 INFO L119 LiptonReduction]: Number of co-enabled transitions 3080 [2023-09-01 00:29:40,763 INFO L134 LiptonReduction]: Checked pairs total: 5462 [2023-09-01 00:29:40,764 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-09-01 00:29:40,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:29:40,776 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@290063c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:29:40,777 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:29:40,780 INFO L130 PetriNetUnfolder]: 4/32 cut-off events. [2023-09-01 00:29:40,780 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:29:40,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:29:40,781 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:29:40,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:29:40,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:29:40,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1754568811, now seen corresponding path program 1 times [2023-09-01 00:29:40,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:29:40,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613639068] [2023-09-01 00:29:40,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:29:40,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:29:40,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:40,863 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:29:40,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:40,891 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:29:40,892 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:29:40,893 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:29:40,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:29:40,895 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:29:40,896 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:29:40,897 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:29:40,897 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:29:40,909 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:29:40,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 159 transitions, 336 flow [2023-09-01 00:29:40,936 INFO L130 PetriNetUnfolder]: 40/286 cut-off events. [2023-09-01 00:29:40,936 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:29:40,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 286 events. 40/286 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 874 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 180. Up to 9 conditions per place. [2023-09-01 00:29:40,938 INFO L82 GeneralOperation]: Start removeDead. Operand has 142 places, 159 transitions, 336 flow [2023-09-01 00:29:40,939 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 159 transitions, 336 flow [2023-09-01 00:29:40,939 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:29:40,939 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 159 transitions, 336 flow [2023-09-01 00:29:40,940 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 159 transitions, 336 flow [2023-09-01 00:29:40,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 159 transitions, 336 flow [2023-09-01 00:29:40,966 INFO L130 PetriNetUnfolder]: 40/286 cut-off events. [2023-09-01 00:29:40,967 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:29:40,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 286 events. 40/286 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 874 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 180. Up to 9 conditions per place. [2023-09-01 00:29:40,972 INFO L119 LiptonReduction]: Number of co-enabled transitions 8344 [2023-09-01 00:29:43,521 INFO L134 LiptonReduction]: Checked pairs total: 19105 [2023-09-01 00:29:43,522 INFO L136 LiptonReduction]: Total number of compositions: 128 [2023-09-01 00:29:43,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:29:43,524 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@290063c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:29:43,524 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:29:43,529 INFO L130 PetriNetUnfolder]: 13/72 cut-off events. [2023-09-01 00:29:43,529 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 00:29:43,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:29:43,529 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:29:43,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:29:43,530 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:29:43,530 INFO L85 PathProgramCache]: Analyzing trace with hash -2092667315, now seen corresponding path program 1 times [2023-09-01 00:29:43,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:29:43,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541038426] [2023-09-01 00:29:43,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:29:43,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:29:43,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:43,565 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:29:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:43,602 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:29:43,602 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:29:43,602 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:29:43,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:29:43,602 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:29:43,603 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:29:43,603 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:29:43,603 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:29:43,623 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:29:43,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 189 transitions, 408 flow [2023-09-01 00:29:43,661 INFO L130 PetriNetUnfolder]: 62/435 cut-off events. [2023-09-01 00:29:43,661 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:29:43,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 435 events. 62/435 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1513 event pairs, 1 based on Foata normal form. 0/333 useless extension candidates. Maximal degree in co-relation 294. Up to 16 conditions per place. [2023-09-01 00:29:43,664 INFO L82 GeneralOperation]: Start removeDead. Operand has 167 places, 189 transitions, 408 flow [2023-09-01 00:29:43,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 167 places, 189 transitions, 408 flow [2023-09-01 00:29:43,666 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:29:43,666 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 167 places, 189 transitions, 408 flow [2023-09-01 00:29:43,666 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 167 places, 189 transitions, 408 flow [2023-09-01 00:29:43,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 167 places, 189 transitions, 408 flow [2023-09-01 00:29:43,693 INFO L130 PetriNetUnfolder]: 62/435 cut-off events. [2023-09-01 00:29:43,694 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:29:43,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 463 conditions, 435 events. 62/435 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1513 event pairs, 1 based on Foata normal form. 0/333 useless extension candidates. Maximal degree in co-relation 294. Up to 16 conditions per place. [2023-09-01 00:29:43,704 INFO L119 LiptonReduction]: Number of co-enabled transitions 15120 [2023-09-01 00:29:46,221 INFO L134 LiptonReduction]: Checked pairs total: 37564 [2023-09-01 00:29:46,221 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-09-01 00:29:46,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:29:46,223 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@290063c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:29:46,223 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:29:46,229 INFO L130 PetriNetUnfolder]: 26/120 cut-off events. [2023-09-01 00:29:46,229 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 00:29:46,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:29:46,230 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:29:46,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:29:46,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:29:46,230 INFO L85 PathProgramCache]: Analyzing trace with hash 2124429100, now seen corresponding path program 1 times [2023-09-01 00:29:46,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:29:46,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884694282] [2023-09-01 00:29:46,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:29:46,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:29:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:46,274 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:29:46,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:46,307 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:29:46,309 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:29:46,309 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:29:46,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:29:46,310 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:29:46,310 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:29:46,310 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:29:46,310 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:29:46,327 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:29:46,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 219 transitions, 482 flow [2023-09-01 00:29:46,388 INFO L130 PetriNetUnfolder]: 96/668 cut-off events. [2023-09-01 00:29:46,389 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:29:46,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 668 events. 96/668 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2725 event pairs, 6 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 455. Up to 32 conditions per place. [2023-09-01 00:29:46,394 INFO L82 GeneralOperation]: Start removeDead. Operand has 192 places, 219 transitions, 482 flow [2023-09-01 00:29:46,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 219 transitions, 482 flow [2023-09-01 00:29:46,397 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:29:46,397 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 219 transitions, 482 flow [2023-09-01 00:29:46,398 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 219 transitions, 482 flow [2023-09-01 00:29:46,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 219 transitions, 482 flow [2023-09-01 00:29:46,450 INFO L130 PetriNetUnfolder]: 96/668 cut-off events. [2023-09-01 00:29:46,451 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:29:46,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 723 conditions, 668 events. 96/668 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2725 event pairs, 6 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 455. Up to 32 conditions per place. [2023-09-01 00:29:46,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 23632 [2023-09-01 00:29:49,102 INFO L134 LiptonReduction]: Checked pairs total: 62137 [2023-09-01 00:29:49,102 INFO L136 LiptonReduction]: Total number of compositions: 158 [2023-09-01 00:29:49,103 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:29:49,104 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@290063c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:29:49,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:29:49,113 INFO L130 PetriNetUnfolder]: 34/165 cut-off events. [2023-09-01 00:29:49,113 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 00:29:49,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:29:49,113 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:29:49,113 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:29:49,113 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:29:49,114 INFO L85 PathProgramCache]: Analyzing trace with hash -424570937, now seen corresponding path program 1 times [2023-09-01 00:29:49,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:29:49,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [806778113] [2023-09-01 00:29:49,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:29:49,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:29:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:49,139 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:29:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:49,156 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:29:49,156 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:29:49,157 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:29:49,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:29:49,157 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:29:49,157 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:29:49,157 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:29:49,158 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:29:49,170 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:29:49,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 249 transitions, 558 flow [2023-09-01 00:29:49,278 INFO L130 PetriNetUnfolder]: 158/1073 cut-off events. [2023-09-01 00:29:49,278 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:29:49,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 1073 events. 158/1073 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5216 event pairs, 23 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 713. Up to 80 conditions per place. [2023-09-01 00:29:49,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 249 transitions, 558 flow [2023-09-01 00:29:49,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 249 transitions, 558 flow [2023-09-01 00:29:49,290 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:29:49,291 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 249 transitions, 558 flow [2023-09-01 00:29:49,291 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 249 transitions, 558 flow [2023-09-01 00:29:49,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 249 transitions, 558 flow [2023-09-01 00:29:49,387 INFO L130 PetriNetUnfolder]: 158/1073 cut-off events. [2023-09-01 00:29:49,388 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:29:49,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 1073 events. 158/1073 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5216 event pairs, 23 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 713. Up to 80 conditions per place. [2023-09-01 00:29:49,412 INFO L119 LiptonReduction]: Number of co-enabled transitions 33880 [2023-09-01 00:29:52,094 INFO L134 LiptonReduction]: Checked pairs total: 103475 [2023-09-01 00:29:52,094 INFO L136 LiptonReduction]: Total number of compositions: 170 [2023-09-01 00:29:52,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:29:52,096 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@290063c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:29:52,096 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:29:52,108 INFO L130 PetriNetUnfolder]: 52/236 cut-off events. [2023-09-01 00:29:52,108 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 00:29:52,108 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:29:52,108 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:29:52,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:29:52,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:29:52,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1644408959, now seen corresponding path program 1 times [2023-09-01 00:29:52,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:29:52,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140786727] [2023-09-01 00:29:52,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:29:52,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:29:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:52,129 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:29:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:52,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:29:52,144 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:29:52,144 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:29:52,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:29:52,144 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:29:52,144 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:29:52,145 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:29:52,145 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:29:52,162 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:29:52,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 279 transitions, 636 flow [2023-09-01 00:29:52,365 INFO L130 PetriNetUnfolder]: 284/1830 cut-off events. [2023-09-01 00:29:52,366 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:29:52,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 1830 events. 284/1830 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10966 event pairs, 72 based on Foata normal form. 0/1397 useless extension candidates. Maximal degree in co-relation 1172. Up to 192 conditions per place. [2023-09-01 00:29:52,381 INFO L82 GeneralOperation]: Start removeDead. Operand has 242 places, 279 transitions, 636 flow [2023-09-01 00:29:52,390 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 242 places, 279 transitions, 636 flow [2023-09-01 00:29:52,390 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:29:52,390 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 242 places, 279 transitions, 636 flow [2023-09-01 00:29:52,391 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 242 places, 279 transitions, 636 flow [2023-09-01 00:29:52,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 242 places, 279 transitions, 636 flow [2023-09-01 00:29:52,573 INFO L130 PetriNetUnfolder]: 284/1830 cut-off events. [2023-09-01 00:29:52,573 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:29:52,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2062 conditions, 1830 events. 284/1830 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10966 event pairs, 72 based on Foata normal form. 0/1397 useless extension candidates. Maximal degree in co-relation 1172. Up to 192 conditions per place. [2023-09-01 00:29:52,629 INFO L119 LiptonReduction]: Number of co-enabled transitions 45864 [2023-09-01 00:29:55,381 INFO L134 LiptonReduction]: Checked pairs total: 145655 [2023-09-01 00:29:55,382 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-09-01 00:29:55,383 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:29:55,384 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@290063c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:29:55,384 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:29:55,400 INFO L130 PetriNetUnfolder]: 69/313 cut-off events. [2023-09-01 00:29:55,401 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 00:29:55,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:29:55,401 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:29:55,401 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:29:55,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:29:55,402 INFO L85 PathProgramCache]: Analyzing trace with hash 410513783, now seen corresponding path program 1 times [2023-09-01 00:29:55,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:29:55,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938039909] [2023-09-01 00:29:55,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:29:55,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:29:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:55,429 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:29:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:55,453 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:29:55,453 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:29:55,453 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:29:55,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:29:55,454 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:29:55,457 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:29:55,457 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:29:55,457 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:29:55,479 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:29:55,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 309 transitions, 716 flow [2023-09-01 00:29:55,901 INFO L130 PetriNetUnfolder]: 554/3307 cut-off events. [2023-09-01 00:29:55,902 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:29:55,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3805 conditions, 3307 events. 554/3307 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 24154 event pairs, 201 based on Foata normal form. 0/2537 useless extension candidates. Maximal degree in co-relation 2048. Up to 448 conditions per place. [2023-09-01 00:29:55,934 INFO L82 GeneralOperation]: Start removeDead. Operand has 267 places, 309 transitions, 716 flow [2023-09-01 00:29:55,951 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 309 transitions, 716 flow [2023-09-01 00:29:55,951 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:29:55,951 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 309 transitions, 716 flow [2023-09-01 00:29:55,951 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 309 transitions, 716 flow [2023-09-01 00:29:55,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 309 transitions, 716 flow [2023-09-01 00:29:56,393 INFO L130 PetriNetUnfolder]: 554/3307 cut-off events. [2023-09-01 00:29:56,394 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:29:56,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3805 conditions, 3307 events. 554/3307 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 24154 event pairs, 201 based on Foata normal form. 0/2537 useless extension candidates. Maximal degree in co-relation 2048. Up to 448 conditions per place. [2023-09-01 00:29:56,509 INFO L119 LiptonReduction]: Number of co-enabled transitions 59584 [2023-09-01 00:29:59,440 INFO L134 LiptonReduction]: Checked pairs total: 174494 [2023-09-01 00:29:59,440 INFO L136 LiptonReduction]: Total number of compositions: 198 [2023-09-01 00:29:59,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:29:59,441 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@290063c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:29:59,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:29:59,465 INFO L130 PetriNetUnfolder]: 91/414 cut-off events. [2023-09-01 00:29:59,465 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 00:29:59,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:29:59,465 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:29:59,465 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:29:59,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:29:59,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1209015053, now seen corresponding path program 1 times [2023-09-01 00:29:59,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:29:59,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804027076] [2023-09-01 00:29:59,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:29:59,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:29:59,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:59,485 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:29:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:29:59,500 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:29:59,506 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:29:59,506 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:29:59,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:29:59,506 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:29:59,507 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:29:59,507 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:29:59,507 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:29:59,527 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:29:59,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 339 transitions, 798 flow [2023-09-01 00:30:00,431 INFO L130 PetriNetUnfolder]: 1144/6256 cut-off events. [2023-09-01 00:30:00,431 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:30:00,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7341 conditions, 6256 events. 1144/6256 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 54314 event pairs, 522 based on Foata normal form. 0/4829 useless extension candidates. Maximal degree in co-relation 3789. Up to 1024 conditions per place. [2023-09-01 00:30:00,503 INFO L82 GeneralOperation]: Start removeDead. Operand has 292 places, 339 transitions, 798 flow [2023-09-01 00:30:00,543 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 292 places, 339 transitions, 798 flow [2023-09-01 00:30:00,543 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:30:00,543 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 292 places, 339 transitions, 798 flow [2023-09-01 00:30:00,544 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 292 places, 339 transitions, 798 flow [2023-09-01 00:30:00,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 292 places, 339 transitions, 798 flow [2023-09-01 00:30:01,446 INFO L130 PetriNetUnfolder]: 1144/6256 cut-off events. [2023-09-01 00:30:01,447 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:30:01,545 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7341 conditions, 6256 events. 1144/6256 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 54314 event pairs, 522 based on Foata normal form. 0/4829 useless extension candidates. Maximal degree in co-relation 3789. Up to 1024 conditions per place. [2023-09-01 00:30:01,765 INFO L119 LiptonReduction]: Number of co-enabled transitions 75040 [2023-09-01 00:30:04,820 INFO L134 LiptonReduction]: Checked pairs total: 245876 [2023-09-01 00:30:04,820 INFO L136 LiptonReduction]: Total number of compositions: 216 [2023-09-01 00:30:04,822 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:30:04,822 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@290063c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:30:04,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:30:04,856 INFO L130 PetriNetUnfolder]: 114/536 cut-off events. [2023-09-01 00:30:04,856 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 00:30:04,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:30:04,856 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:30:04,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:30:04,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:30:04,857 INFO L85 PathProgramCache]: Analyzing trace with hash -399184097, now seen corresponding path program 1 times [2023-09-01 00:30:04,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:30:04,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644032603] [2023-09-01 00:30:04,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:30:04,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:04,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:04,876 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:04,901 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:04,901 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:04,901 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:04,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:30:04,901 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:04,903 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:04,903 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:04,903 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:30:04,922 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:30:04,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 369 transitions, 882 flow [2023-09-01 00:30:06,841 INFO L130 PetriNetUnfolder]: 2438/12213 cut-off events. [2023-09-01 00:30:06,843 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:30:07,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14590 conditions, 12213 events. 2438/12213 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 123200 event pairs, 1291 based on Foata normal form. 0/9489 useless extension candidates. Maximal degree in co-relation 7323. Up to 2304 conditions per place. [2023-09-01 00:30:07,051 INFO L82 GeneralOperation]: Start removeDead. Operand has 317 places, 369 transitions, 882 flow [2023-09-01 00:30:07,337 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 317 places, 369 transitions, 882 flow [2023-09-01 00:30:07,337 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:30:07,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 317 places, 369 transitions, 882 flow [2023-09-01 00:30:07,338 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 317 places, 369 transitions, 882 flow [2023-09-01 00:30:07,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 317 places, 369 transitions, 882 flow [2023-09-01 00:30:09,179 INFO L130 PetriNetUnfolder]: 2438/12213 cut-off events. [2023-09-01 00:30:09,179 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:30:09,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14590 conditions, 12213 events. 2438/12213 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 123200 event pairs, 1291 based on Foata normal form. 0/9489 useless extension candidates. Maximal degree in co-relation 7323. Up to 2304 conditions per place. [2023-09-01 00:30:09,697 INFO L119 LiptonReduction]: Number of co-enabled transitions 92232 [2023-09-01 00:30:12,987 INFO L134 LiptonReduction]: Checked pairs total: 277391 [2023-09-01 00:30:12,987 INFO L136 LiptonReduction]: Total number of compositions: 228 [2023-09-01 00:30:12,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:30:12,988 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@290063c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:30:12,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:30:13,053 INFO L130 PetriNetUnfolder]: 169/751 cut-off events. [2023-09-01 00:30:13,054 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 00:30:13,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:30:13,054 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:30:13,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:30:13,054 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:30:13,054 INFO L85 PathProgramCache]: Analyzing trace with hash -178548922, now seen corresponding path program 1 times [2023-09-01 00:30:13,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:30:13,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637310712] [2023-09-01 00:30:13,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:30:13,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:13,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:13,072 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:13,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:13,087 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:13,087 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:13,087 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:13,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:30:13,087 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:13,088 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:13,088 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:13,088 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:30:13,110 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:30:13,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 399 transitions, 968 flow [2023-09-01 00:30:17,326 INFO L130 PetriNetUnfolder]: 5268/24314 cut-off events. [2023-09-01 00:30:17,327 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:30:17,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29520 conditions, 24314 events. 5268/24314 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 278901 event pairs, 3084 based on Foata normal form. 0/19013 useless extension candidates. Maximal degree in co-relation 14570. Up to 5120 conditions per place. [2023-09-01 00:30:17,948 INFO L82 GeneralOperation]: Start removeDead. Operand has 342 places, 399 transitions, 968 flow [2023-09-01 00:30:18,239 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 399 transitions, 968 flow [2023-09-01 00:30:18,239 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:30:18,239 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 342 places, 399 transitions, 968 flow [2023-09-01 00:30:18,239 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 342 places, 399 transitions, 968 flow [2023-09-01 00:30:18,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 399 transitions, 968 flow [2023-09-01 00:30:21,841 INFO L130 PetriNetUnfolder]: 5268/24314 cut-off events. [2023-09-01 00:30:21,842 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:30:22,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29520 conditions, 24314 events. 5268/24314 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 589. Compared 278901 event pairs, 3084 based on Foata normal form. 0/19013 useless extension candidates. Maximal degree in co-relation 14570. Up to 5120 conditions per place. [2023-09-01 00:30:23,563 INFO L119 LiptonReduction]: Number of co-enabled transitions 111160 [2023-09-01 00:30:26,680 INFO L134 LiptonReduction]: Checked pairs total: 335048 [2023-09-01 00:30:26,681 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-09-01 00:30:26,684 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:30:26,684 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@290063c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:30:26,684 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:30:26,761 INFO L130 PetriNetUnfolder]: 245/1049 cut-off events. [2023-09-01 00:30:26,761 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 00:30:26,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:30:26,762 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:30:26,762 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:30:26,762 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:30:26,762 INFO L85 PathProgramCache]: Analyzing trace with hash 6322263, now seen corresponding path program 1 times [2023-09-01 00:30:26,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:30:26,762 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922066169] [2023-09-01 00:30:26,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:30:26,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:26,794 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:26,823 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:26,824 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:26,825 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:26,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:30:26,825 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:26,826 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:26,826 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:26,826 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:30:26,847 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:30:26,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 429 transitions, 1056 flow [2023-09-01 00:30:36,449 INFO L130 PetriNetUnfolder]: 11426/48959 cut-off events. [2023-09-01 00:30:36,449 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:30:37,247 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60323 conditions, 48959 events. 11426/48959 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 629128 event pairs, 7181 based on Foata normal form. 0/38521 useless extension candidates. Maximal degree in co-relation 29498. Up to 11264 conditions per place. [2023-09-01 00:30:37,247 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 429 transitions, 1056 flow [2023-09-01 00:30:37,731 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 429 transitions, 1056 flow [2023-09-01 00:30:37,731 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:30:37,731 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 367 places, 429 transitions, 1056 flow [2023-09-01 00:30:37,731 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 367 places, 429 transitions, 1056 flow [2023-09-01 00:30:37,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 429 transitions, 1056 flow [2023-09-01 00:30:47,139 INFO L130 PetriNetUnfolder]: 11426/48959 cut-off events. [2023-09-01 00:30:47,139 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:30:47,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60323 conditions, 48959 events. 11426/48959 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1129. Compared 629128 event pairs, 7181 based on Foata normal form. 0/38521 useless extension candidates. Maximal degree in co-relation 29498. Up to 11264 conditions per place. [2023-09-01 00:30:49,915 INFO L119 LiptonReduction]: Number of co-enabled transitions 131824 [2023-09-01 00:30:53,134 INFO L134 LiptonReduction]: Checked pairs total: 404738 [2023-09-01 00:30:53,134 INFO L136 LiptonReduction]: Total number of compositions: 258 [2023-09-01 00:30:53,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:30:53,136 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@290063c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:30:53,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:30:53,254 INFO L130 PetriNetUnfolder]: 372/1504 cut-off events. [2023-09-01 00:30:53,254 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 00:30:53,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:30:53,254 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:30:53,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:30:53,255 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:30:53,255 INFO L85 PathProgramCache]: Analyzing trace with hash -108943501, now seen corresponding path program 1 times [2023-09-01 00:30:53,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:30:53,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189711365] [2023-09-01 00:30:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:30:53,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:30:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:53,276 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:30:53,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:30:53,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:30:53,294 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:30:53,294 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:30:53,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:30:53,295 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:30:53,296 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:30:53,296 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:30:53,296 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:30:53,319 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:30:53,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 459 transitions, 1146 flow [2023-09-01 00:31:14,182 INFO L130 PetriNetUnfolder]: 24752/99204 cut-off events. [2023-09-01 00:31:14,183 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:31:17,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123895 conditions, 99204 events. 24752/99204 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2187. Compared 1391982 event pairs, 16398 based on Foata normal form. 0/78509 useless extension candidates. Maximal degree in co-relation 60299. Up to 24576 conditions per place. [2023-09-01 00:31:17,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 392 places, 459 transitions, 1146 flow [2023-09-01 00:31:18,442 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 392 places, 459 transitions, 1146 flow [2023-09-01 00:31:18,442 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:31:18,442 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 392 places, 459 transitions, 1146 flow [2023-09-01 00:31:18,442 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 392 places, 459 transitions, 1146 flow [2023-09-01 00:31:18,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 392 places, 459 transitions, 1146 flow [2023-09-01 00:31:40,304 INFO L130 PetriNetUnfolder]: 24752/99204 cut-off events. [2023-09-01 00:31:40,304 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:31:43,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123895 conditions, 99204 events. 24752/99204 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2187. Compared 1391982 event pairs, 16398 based on Foata normal form. 0/78509 useless extension candidates. Maximal degree in co-relation 60299. Up to 24576 conditions per place. [2023-09-01 00:31:47,966 INFO L119 LiptonReduction]: Number of co-enabled transitions 154224 [2023-09-01 00:31:51,199 INFO L134 LiptonReduction]: Checked pairs total: 526324 [2023-09-01 00:31:51,199 INFO L136 LiptonReduction]: Total number of compositions: 273 [2023-09-01 00:31:51,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:31:51,202 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@290063c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:31:51,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:31:51,381 INFO L130 PetriNetUnfolder]: 585/2206 cut-off events. [2023-09-01 00:31:51,381 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 00:31:51,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:31:51,382 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:31:51,382 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:31:51,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:31:51,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1917743853, now seen corresponding path program 1 times [2023-09-01 00:31:51,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:31:51,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309828222] [2023-09-01 00:31:51,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:31:51,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:31:51,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:31:51,398 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:31:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:31:51,414 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:31:51,414 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:31:51,414 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:31:51,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:31:51,415 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:31:51,415 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:31:51,415 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:31:51,415 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:31:51,435 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:31:51,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 417 places, 489 transitions, 1238 flow [2023-09-01 00:32:39,377 INFO L130 PetriNetUnfolder]: 53438/201673 cut-off events. [2023-09-01 00:32:39,377 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:32:49,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255052 conditions, 201673 events. 53438/201673 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4205. Compared 3073061 event pairs, 36879 based on Foata normal form. 0/160481 useless extension candidates. Maximal degree in co-relation 123869. Up to 53248 conditions per place. [2023-09-01 00:32:49,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 417 places, 489 transitions, 1238 flow [2023-09-01 00:32:53,648 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 417 places, 489 transitions, 1238 flow [2023-09-01 00:32:53,648 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:32:53,648 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 417 places, 489 transitions, 1238 flow [2023-09-01 00:32:53,648 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 417 places, 489 transitions, 1238 flow [2023-09-01 00:32:53,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 417 places, 489 transitions, 1238 flow [2023-09-01 00:33:40,721 INFO L130 PetriNetUnfolder]: 53438/201673 cut-off events. [2023-09-01 00:33:40,721 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:33:50,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255052 conditions, 201673 events. 53438/201673 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4205. Compared 3073061 event pairs, 36879 based on Foata normal form. 0/160481 useless extension candidates. Maximal degree in co-relation 123869. Up to 53248 conditions per place. [2023-09-01 00:34:10,415 INFO L119 LiptonReduction]: Number of co-enabled transitions 178360 [2023-09-01 00:34:14,459 INFO L134 LiptonReduction]: Checked pairs total: 613148 [2023-09-01 00:34:14,460 INFO L136 LiptonReduction]: Total number of compositions: 291 [2023-09-01 00:34:14,466 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:34:14,469 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@290063c2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:34:14,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:34:14,812 INFO L130 PetriNetUnfolder]: 927/3268 cut-off events. [2023-09-01 00:34:14,812 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 00:34:14,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:34:14,812 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:34:14,812 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:34:14,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:34:14,813 INFO L85 PathProgramCache]: Analyzing trace with hash -1913101223, now seen corresponding path program 1 times [2023-09-01 00:34:14,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:34:14,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046317381] [2023-09-01 00:34:14,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:34:14,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:34:14,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:14,855 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:34:14,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:34:14,880 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:34:14,880 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:34:14,880 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:34:14,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 00:34:14,880 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:34:14,880 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:34:14,881 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:34:14,881 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 00:34:14,924 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 00:34:14,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 442 places, 519 transitions, 1332 flow