./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc --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 10:49:22,349 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:49:22,351 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:49:22,386 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:49:22,388 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:49:22,390 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:49:22,391 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:49:22,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:49:22,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:49:22,400 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:49:22,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:49:22,403 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:49:22,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:49:22,404 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:49:22,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:49:22,408 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:49:22,409 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:49:22,409 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:49:22,411 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:49:22,412 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:49:22,415 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:49:22,419 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:49:22,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:49:22,421 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:49:22,424 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:49:22,427 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:49:22,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:49:22,428 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:49:22,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:49:22,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:49:22,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:49:22,432 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:49:22,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:49:22,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:49:22,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:49:22,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:49:22,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:49:22,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:49:22,436 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:49:22,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:49:22,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:49:22,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:49:22,459 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:49:22,459 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:49:22,460 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:49:22,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:49:22,461 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:49:22,461 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:49:22,462 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:49:22,462 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:49:22,462 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:49:22,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:49:22,463 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:49:22,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:49:22,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:49:22,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:49:22,463 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:49:22,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:49:22,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:49:22,464 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:49:22,464 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:49:22,464 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:49:22,464 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:49:22,465 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:49:22,465 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:49:22,465 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:49:22,465 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:49:22,465 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:49:22,465 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:49:22,465 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:49:22,466 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:49:22,466 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:49:22,466 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:49:22,466 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:49:22,466 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:49:22,466 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:49:22,467 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:49:22,467 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 830cb16a3cbc120e059f0ed7638e33ed20360a11f425952cf536aa3d659b86fc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:49:22,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:49:22,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:49:22,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:49:22,729 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:49:22,729 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:49:22,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-09-01 10:49:23,615 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:49:23,832 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:49:23,832 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_06-cond_racing1.i [2023-09-01 10:49:23,843 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2512c27c8/44ff16ad2dde45b09347f6f4d583f0e7/FLAG0f669d7a5 [2023-09-01 10:49:23,852 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2512c27c8/44ff16ad2dde45b09347f6f4d583f0e7 [2023-09-01 10:49:23,854 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:49:23,855 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:49:23,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:49:23,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:49:23,857 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:49:23,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:49:23" (1/1) ... [2023-09-01 10:49:23,859 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ded9170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:23, skipping insertion in model container [2023-09-01 10:49:23,860 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:49:23" (1/1) ... [2023-09-01 10:49:23,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:49:23,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:49:24,198 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_06-cond_racing1.i[41322,41335] [2023-09-01 10:49:24,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:49:24,233 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:49:24,268 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_06-cond_racing1.i[41322,41335] [2023-09-01 10:49:24,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:49:24,337 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:49:24,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:24 WrapperNode [2023-09-01 10:49:24,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:49:24,339 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:49:24,339 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:49:24,339 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:49:24,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:24" (1/1) ... [2023-09-01 10:49:24,367 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:24" (1/1) ... [2023-09-01 10:49:24,391 INFO L138 Inliner]: procedures = 270, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 89 [2023-09-01 10:49:24,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:49:24,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:49:24,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:49:24,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:49:24,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:24" (1/1) ... [2023-09-01 10:49:24,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:24" (1/1) ... [2023-09-01 10:49:24,408 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:24" (1/1) ... [2023-09-01 10:49:24,409 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:24" (1/1) ... [2023-09-01 10:49:24,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:24" (1/1) ... [2023-09-01 10:49:24,424 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:24" (1/1) ... [2023-09-01 10:49:24,426 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:24" (1/1) ... [2023-09-01 10:49:24,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:24" (1/1) ... [2023-09-01 10:49:24,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:49:24,436 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:49:24,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:49:24,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:49:24,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:24" (1/1) ... [2023-09-01 10:49:24,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:49:24,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:49:24,459 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 10:49:24,471 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 10:49:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:49:24,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:49:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:49:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:49:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:49:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:49:24,493 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:49:24,493 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:49:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:49:24,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:49:24,494 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:49:24,495 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 10:49:24,607 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:49:24,608 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:49:24,766 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:49:24,771 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:49:24,772 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 10:49:24,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:49:24 BoogieIcfgContainer [2023-09-01 10:49:24,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:49:24,777 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:49:24,777 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:49:24,779 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:49:24,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:49:23" (1/3) ... [2023-09-01 10:49:24,780 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d3f89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:49:24, skipping insertion in model container [2023-09-01 10:49:24,780 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:49:24" (2/3) ... [2023-09-01 10:49:24,781 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58d3f89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:49:24, skipping insertion in model container [2023-09-01 10:49:24,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:49:24" (3/3) ... [2023-09-01 10:49:24,783 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_06-cond_racing1.i [2023-09-01 10:49:24,789 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:49:24,795 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:49:24,795 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 10:49:24,795 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:49:24,870 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 10:49:24,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 119 transitions, 246 flow [2023-09-01 10:49:24,966 INFO L130 PetriNetUnfolder]: 23/161 cut-off events. [2023-09-01 10:49:24,966 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:49:24,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 161 events. 23/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 360 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 79. Up to 6 conditions per place. [2023-09-01 10:49:24,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 119 transitions, 246 flow [2023-09-01 10:49:24,974 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 114 transitions, 233 flow [2023-09-01 10:49:24,977 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:49:24,993 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 114 transitions, 233 flow [2023-09-01 10:49:24,996 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 114 transitions, 233 flow [2023-09-01 10:49:24,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 114 transitions, 233 flow [2023-09-01 10:49:25,032 INFO L130 PetriNetUnfolder]: 22/156 cut-off events. [2023-09-01 10:49:25,033 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:49:25,034 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 156 events. 22/156 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 350 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 79. Up to 6 conditions per place. [2023-09-01 10:49:25,036 INFO L119 LiptonReduction]: Number of co-enabled transitions 2688 [2023-09-01 10:49:27,614 INFO L134 LiptonReduction]: Checked pairs total: 4411 [2023-09-01 10:49:27,614 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-09-01 10:49:27,623 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:49:27,627 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46f902e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:49:27,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:49:27,631 INFO L130 PetriNetUnfolder]: 5/27 cut-off events. [2023-09-01 10:49:27,631 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:49:27,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:49:27,632 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:49:27,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:49:27,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:49:27,635 INFO L85 PathProgramCache]: Analyzing trace with hash 690972307, now seen corresponding path program 1 times [2023-09-01 10:49:27,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:49:27,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196122944] [2023-09-01 10:49:27,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:49:27,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:49:27,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:27,732 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:49:27,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:27,761 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:49:27,762 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:49:27,762 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:49:27,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:49:27,764 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:49:27,766 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:49:27,766 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:49:27,766 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:49:27,784 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:49:27,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 149 transitions, 316 flow [2023-09-01 10:49:27,821 INFO L130 PetriNetUnfolder]: 40/257 cut-off events. [2023-09-01 10:49:27,821 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:49:27,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 257 events. 40/257 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 722 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 163. Up to 9 conditions per place. [2023-09-01 10:49:27,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 149 transitions, 316 flow [2023-09-01 10:49:27,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 149 transitions, 316 flow [2023-09-01 10:49:27,826 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:49:27,826 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 149 transitions, 316 flow [2023-09-01 10:49:27,827 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 149 transitions, 316 flow [2023-09-01 10:49:27,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 149 transitions, 316 flow [2023-09-01 10:49:27,847 INFO L130 PetriNetUnfolder]: 40/257 cut-off events. [2023-09-01 10:49:27,847 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:49:27,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271 conditions, 257 events. 40/257 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 722 event pairs, 0 based on Foata normal form. 0/210 useless extension candidates. Maximal degree in co-relation 163. Up to 9 conditions per place. [2023-09-01 10:49:27,852 INFO L119 LiptonReduction]: Number of co-enabled transitions 7560 [2023-09-01 10:49:30,264 INFO L134 LiptonReduction]: Checked pairs total: 17120 [2023-09-01 10:49:30,264 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-09-01 10:49:30,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:49:30,267 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46f902e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:49:30,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:49:30,271 INFO L130 PetriNetUnfolder]: 13/60 cut-off events. [2023-09-01 10:49:30,271 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 10:49:30,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:49:30,272 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:49:30,272 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:49:30,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:49:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1652856533, now seen corresponding path program 1 times [2023-09-01 10:49:30,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:49:30,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133130508] [2023-09-01 10:49:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:49:30,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:49:30,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:30,299 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:49:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:30,329 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:49:30,332 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:49:30,332 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:49:30,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:49:30,333 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:49:30,334 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:49:30,334 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:49:30,335 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:49:30,348 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 10:49:30,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 179 transitions, 388 flow [2023-09-01 10:49:30,372 INFO L130 PetriNetUnfolder]: 62/384 cut-off events. [2023-09-01 10:49:30,373 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:49:30,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 384 events. 62/384 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1219 event pairs, 1 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 265. Up to 16 conditions per place. [2023-09-01 10:49:30,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 179 transitions, 388 flow [2023-09-01 10:49:30,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 179 transitions, 388 flow [2023-09-01 10:49:30,376 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:49:30,380 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 179 transitions, 388 flow [2023-09-01 10:49:30,381 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 179 transitions, 388 flow [2023-09-01 10:49:30,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 179 transitions, 388 flow [2023-09-01 10:49:30,408 INFO L130 PetriNetUnfolder]: 62/384 cut-off events. [2023-09-01 10:49:30,408 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:49:30,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 412 conditions, 384 events. 62/384 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1219 event pairs, 1 based on Foata normal form. 0/314 useless extension candidates. Maximal degree in co-relation 265. Up to 16 conditions per place. [2023-09-01 10:49:30,417 INFO L119 LiptonReduction]: Number of co-enabled transitions 13944 [2023-09-01 10:49:32,885 INFO L134 LiptonReduction]: Checked pairs total: 34673 [2023-09-01 10:49:32,886 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-09-01 10:49:32,887 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:49:32,888 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46f902e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:49:32,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:49:32,899 INFO L130 PetriNetUnfolder]: 26/103 cut-off events. [2023-09-01 10:49:32,899 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 10:49:32,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:49:32,900 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:49:32,904 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:49:32,904 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:49:32,904 INFO L85 PathProgramCache]: Analyzing trace with hash 672582438, now seen corresponding path program 1 times [2023-09-01 10:49:32,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:49:32,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862850] [2023-09-01 10:49:32,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:49:32,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:49:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:32,946 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:49:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:32,961 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:49:32,962 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:49:32,962 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:49:32,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:49:32,963 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:49:32,963 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:49:32,963 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:49:32,963 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:49:32,978 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:49:32,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 209 transitions, 462 flow [2023-09-01 10:49:33,035 INFO L130 PetriNetUnfolder]: 96/575 cut-off events. [2023-09-01 10:49:33,036 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:49:33,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 575 events. 96/575 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2103 event pairs, 6 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 404. Up to 32 conditions per place. [2023-09-01 10:49:33,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 182 places, 209 transitions, 462 flow [2023-09-01 10:49:33,043 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 209 transitions, 462 flow [2023-09-01 10:49:33,043 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:49:33,044 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 209 transitions, 462 flow [2023-09-01 10:49:33,044 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 209 transitions, 462 flow [2023-09-01 10:49:33,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 209 transitions, 462 flow [2023-09-01 10:49:33,090 INFO L130 PetriNetUnfolder]: 96/575 cut-off events. [2023-09-01 10:49:33,090 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:49:33,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 630 conditions, 575 events. 96/575 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2103 event pairs, 6 based on Foata normal form. 0/474 useless extension candidates. Maximal degree in co-relation 404. Up to 32 conditions per place. [2023-09-01 10:49:33,104 INFO L119 LiptonReduction]: Number of co-enabled transitions 22064 [2023-09-01 10:49:35,784 INFO L134 LiptonReduction]: Checked pairs total: 64435 [2023-09-01 10:49:35,784 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-09-01 10:49:35,785 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:49:35,789 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46f902e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:49:35,789 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:49:35,798 INFO L130 PetriNetUnfolder]: 34/140 cut-off events. [2023-09-01 10:49:35,798 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 10:49:35,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:49:35,798 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:49:35,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:49:35,800 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:49:35,800 INFO L85 PathProgramCache]: Analyzing trace with hash -2088589946, now seen corresponding path program 1 times [2023-09-01 10:49:35,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:49:35,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554629304] [2023-09-01 10:49:35,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:49:35,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:49:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:35,846 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:49:35,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:35,868 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:49:35,868 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:49:35,869 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:49:35,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:49:35,869 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:49:35,869 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:49:35,869 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:49:35,869 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:49:35,886 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 10:49:35,890 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 239 transitions, 538 flow [2023-09-01 10:49:35,973 INFO L130 PetriNetUnfolder]: 158/898 cut-off events. [2023-09-01 10:49:35,973 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:49:35,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 898 events. 158/898 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3848 event pairs, 23 based on Foata normal form. 0/750 useless extension candidates. Maximal degree in co-relation 620. Up to 80 conditions per place. [2023-09-01 10:49:35,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 239 transitions, 538 flow [2023-09-01 10:49:35,983 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 239 transitions, 538 flow [2023-09-01 10:49:35,983 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:49:35,984 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 239 transitions, 538 flow [2023-09-01 10:49:35,984 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 239 transitions, 538 flow [2023-09-01 10:49:35,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 239 transitions, 538 flow [2023-09-01 10:49:36,055 INFO L130 PetriNetUnfolder]: 158/898 cut-off events. [2023-09-01 10:49:36,055 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:49:36,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1009 conditions, 898 events. 158/898 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3848 event pairs, 23 based on Foata normal form. 0/750 useless extension candidates. Maximal degree in co-relation 620. Up to 80 conditions per place. [2023-09-01 10:49:36,080 INFO L119 LiptonReduction]: Number of co-enabled transitions 31920 [2023-09-01 10:49:38,611 INFO L134 LiptonReduction]: Checked pairs total: 89067 [2023-09-01 10:49:38,611 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-09-01 10:49:38,612 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:49:38,612 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46f902e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:49:38,613 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:49:38,623 INFO L130 PetriNetUnfolder]: 52/200 cut-off events. [2023-09-01 10:49:38,623 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 10:49:38,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:49:38,623 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:49:38,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:49:38,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:49:38,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1372851574, now seen corresponding path program 1 times [2023-09-01 10:49:38,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:49:38,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277832235] [2023-09-01 10:49:38,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:49:38,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:49:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:38,640 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:49:38,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:38,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:49:38,653 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:49:38,654 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:49:38,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:49:38,654 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:49:38,654 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:49:38,654 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:49:38,655 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:49:38,669 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 10:49:38,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 269 transitions, 616 flow [2023-09-01 10:49:38,828 INFO L130 PetriNetUnfolder]: 284/1493 cut-off events. [2023-09-01 10:49:38,828 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:49:38,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1725 conditions, 1493 events. 284/1493 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7926 event pairs, 72 based on Foata normal form. 0/1266 useless extension candidates. Maximal degree in co-relation 997. Up to 192 conditions per place. [2023-09-01 10:49:38,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 232 places, 269 transitions, 616 flow [2023-09-01 10:49:38,850 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 232 places, 269 transitions, 616 flow [2023-09-01 10:49:38,850 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:49:38,850 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 232 places, 269 transitions, 616 flow [2023-09-01 10:49:38,850 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 232 places, 269 transitions, 616 flow [2023-09-01 10:49:38,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 232 places, 269 transitions, 616 flow [2023-09-01 10:49:39,006 INFO L130 PetriNetUnfolder]: 284/1493 cut-off events. [2023-09-01 10:49:39,006 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:49:39,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1725 conditions, 1493 events. 284/1493 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 7926 event pairs, 72 based on Foata normal form. 0/1266 useless extension candidates. Maximal degree in co-relation 997. Up to 192 conditions per place. [2023-09-01 10:49:39,047 INFO L119 LiptonReduction]: Number of co-enabled transitions 43512 [2023-09-01 10:49:41,710 INFO L134 LiptonReduction]: Checked pairs total: 125815 [2023-09-01 10:49:41,710 INFO L136 LiptonReduction]: Total number of compositions: 172 [2023-09-01 10:49:41,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:49:41,711 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46f902e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:49:41,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:49:41,726 INFO L130 PetriNetUnfolder]: 69/263 cut-off events. [2023-09-01 10:49:41,726 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 10:49:41,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:49:41,726 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:49:41,726 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:49:41,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:49:41,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1887297488, now seen corresponding path program 1 times [2023-09-01 10:49:41,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:49:41,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238927486] [2023-09-01 10:49:41,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:49:41,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:49:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:41,757 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:49:41,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:41,775 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:49:41,779 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:49:41,779 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:49:41,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:49:41,779 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:49:41,781 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:49:41,781 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:49:41,781 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:49:41,801 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 10:49:41,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 299 transitions, 696 flow [2023-09-01 10:49:42,138 INFO L130 PetriNetUnfolder]: 554/2648 cut-off events. [2023-09-01 10:49:42,139 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:49:42,167 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3146 conditions, 2648 events. 554/2648 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16986 event pairs, 201 based on Foata normal form. 0/2278 useless extension candidates. Maximal degree in co-relation 1711. Up to 448 conditions per place. [2023-09-01 10:49:42,168 INFO L82 GeneralOperation]: Start removeDead. Operand has 257 places, 299 transitions, 696 flow [2023-09-01 10:49:42,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 257 places, 299 transitions, 696 flow [2023-09-01 10:49:42,183 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:49:42,184 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 257 places, 299 transitions, 696 flow [2023-09-01 10:49:42,184 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 257 places, 299 transitions, 696 flow [2023-09-01 10:49:42,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 257 places, 299 transitions, 696 flow [2023-09-01 10:49:42,508 INFO L130 PetriNetUnfolder]: 554/2648 cut-off events. [2023-09-01 10:49:42,508 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:49:42,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3146 conditions, 2648 events. 554/2648 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 16986 event pairs, 201 based on Foata normal form. 0/2278 useless extension candidates. Maximal degree in co-relation 1711. Up to 448 conditions per place. [2023-09-01 10:49:42,618 INFO L119 LiptonReduction]: Number of co-enabled transitions 56840 [2023-09-01 10:49:45,328 INFO L134 LiptonReduction]: Checked pairs total: 168356 [2023-09-01 10:49:45,328 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-09-01 10:49:45,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:49:45,330 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46f902e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:49:45,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:49:45,349 INFO L130 PetriNetUnfolder]: 91/344 cut-off events. [2023-09-01 10:49:45,349 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 10:49:45,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:49:45,349 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:49:45,349 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:49:45,350 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:49:45,350 INFO L85 PathProgramCache]: Analyzing trace with hash -1447277913, now seen corresponding path program 1 times [2023-09-01 10:49:45,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:49:45,350 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971571207] [2023-09-01 10:49:45,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:49:45,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:49:45,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:45,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:49:45,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:45,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:49:45,389 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:49:45,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:49:45,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:49:45,390 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:49:45,390 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:49:45,390 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:49:45,391 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 10:49:45,407 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:49:45,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 329 transitions, 778 flow [2023-09-01 10:49:46,160 INFO L130 PetriNetUnfolder]: 1144/4955 cut-off events. [2023-09-01 10:49:46,160 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:49:46,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6040 conditions, 4955 events. 1144/4955 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 37983 event pairs, 522 based on Foata normal form. 0/4314 useless extension candidates. Maximal degree in co-relation 3130. Up to 1024 conditions per place. [2023-09-01 10:49:46,220 INFO L82 GeneralOperation]: Start removeDead. Operand has 282 places, 329 transitions, 778 flow [2023-09-01 10:49:46,258 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 329 transitions, 778 flow [2023-09-01 10:49:46,259 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:49:46,259 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 282 places, 329 transitions, 778 flow [2023-09-01 10:49:46,259 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 282 places, 329 transitions, 778 flow [2023-09-01 10:49:46,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 329 transitions, 778 flow [2023-09-01 10:49:46,988 INFO L130 PetriNetUnfolder]: 1144/4955 cut-off events. [2023-09-01 10:49:46,988 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:49:47,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6040 conditions, 4955 events. 1144/4955 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 37983 event pairs, 522 based on Foata normal form. 0/4314 useless extension candidates. Maximal degree in co-relation 3130. Up to 1024 conditions per place. [2023-09-01 10:49:47,178 INFO L119 LiptonReduction]: Number of co-enabled transitions 71904 [2023-09-01 10:49:50,410 INFO L134 LiptonReduction]: Checked pairs total: 239779 [2023-09-01 10:49:50,410 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-09-01 10:49:50,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:49:50,413 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46f902e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:49:50,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:49:50,442 INFO L130 PetriNetUnfolder]: 122/453 cut-off events. [2023-09-01 10:49:50,443 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 10:49:50,443 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:49:50,443 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:49:50,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:49:50,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:49:50,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1527056841, now seen corresponding path program 1 times [2023-09-01 10:49:50,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:49:50,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781585462] [2023-09-01 10:49:50,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:49:50,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:49:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:50,478 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:49:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:50,501 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:49:50,501 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:49:50,501 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:49:50,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:49:50,502 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:49:50,503 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:49:50,503 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:49:50,503 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 10:49:50,524 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 10:49:50,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 359 transitions, 862 flow [2023-09-01 10:49:52,059 INFO L130 PetriNetUnfolder]: 2438/9630 cut-off events. [2023-09-01 10:49:52,059 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:49:52,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12007 conditions, 9630 events. 2438/9630 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86304 event pairs, 1291 based on Foata normal form. 0/8462 useless extension candidates. Maximal degree in co-relation 6022. Up to 2304 conditions per place. [2023-09-01 10:49:52,186 INFO L82 GeneralOperation]: Start removeDead. Operand has 307 places, 359 transitions, 862 flow [2023-09-01 10:49:52,259 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 307 places, 359 transitions, 862 flow [2023-09-01 10:49:52,260 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:49:52,260 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 307 places, 359 transitions, 862 flow [2023-09-01 10:49:52,260 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 307 places, 359 transitions, 862 flow [2023-09-01 10:49:52,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 307 places, 359 transitions, 862 flow [2023-09-01 10:49:53,902 INFO L130 PetriNetUnfolder]: 2438/9630 cut-off events. [2023-09-01 10:49:53,902 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:49:54,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12007 conditions, 9630 events. 2438/9630 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 86304 event pairs, 1291 based on Foata normal form. 0/8462 useless extension candidates. Maximal degree in co-relation 6022. Up to 2304 conditions per place. [2023-09-01 10:49:54,357 INFO L119 LiptonReduction]: Number of co-enabled transitions 88704 [2023-09-01 10:49:57,442 INFO L134 LiptonReduction]: Checked pairs total: 300287 [2023-09-01 10:49:57,442 INFO L136 LiptonReduction]: Total number of compositions: 217 [2023-09-01 10:49:57,443 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:49:57,444 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46f902e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:49:57,444 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:49:57,486 INFO L130 PetriNetUnfolder]: 169/608 cut-off events. [2023-09-01 10:49:57,486 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 10:49:57,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:49:57,486 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:49:57,486 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:49:57,486 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:49:57,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1579751107, now seen corresponding path program 1 times [2023-09-01 10:49:57,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:49:57,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702139605] [2023-09-01 10:49:57,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:49:57,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:49:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:57,503 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:49:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:49:57,516 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:49:57,516 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:49:57,516 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:49:57,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:49:57,516 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:49:57,517 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:49:57,517 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:49:57,517 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 10:49:57,535 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 10:49:57,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 389 transitions, 948 flow [2023-09-01 10:50:00,994 INFO L130 PetriNetUnfolder]: 5268/19169 cut-off events. [2023-09-01 10:50:00,994 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:50:01,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24375 conditions, 19169 events. 5268/19169 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 195437 event pairs, 3084 based on Foata normal form. 0/16962 useless extension candidates. Maximal degree in co-relation 11987. Up to 5120 conditions per place. [2023-09-01 10:50:01,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 332 places, 389 transitions, 948 flow [2023-09-01 10:50:01,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 332 places, 389 transitions, 948 flow [2023-09-01 10:50:01,404 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:01,404 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 332 places, 389 transitions, 948 flow [2023-09-01 10:50:01,404 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 332 places, 389 transitions, 948 flow [2023-09-01 10:50:01,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 332 places, 389 transitions, 948 flow [2023-09-01 10:50:04,870 INFO L130 PetriNetUnfolder]: 5268/19169 cut-off events. [2023-09-01 10:50:04,870 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:50:05,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24375 conditions, 19169 events. 5268/19169 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 195437 event pairs, 3084 based on Foata normal form. 0/16962 useless extension candidates. Maximal degree in co-relation 11987. Up to 5120 conditions per place. [2023-09-01 10:50:05,769 INFO L119 LiptonReduction]: Number of co-enabled transitions 107240 [2023-09-01 10:50:09,029 INFO L134 LiptonReduction]: Checked pairs total: 328173 [2023-09-01 10:50:09,030 INFO L136 LiptonReduction]: Total number of compositions: 232 [2023-09-01 10:50:09,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:09,031 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46f902e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:09,031 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:09,103 INFO L130 PetriNetUnfolder]: 245/838 cut-off events. [2023-09-01 10:50:09,103 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 10:50:09,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:09,104 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:09,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:09,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1269829589, now seen corresponding path program 1 times [2023-09-01 10:50:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:09,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233426143] [2023-09-01 10:50:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:09,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:09,121 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:09,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:09,136 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:09,136 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:09,136 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:09,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:50:09,136 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:09,137 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:09,137 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:09,137 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 10:50:09,169 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 10:50:09,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 419 transitions, 1036 flow [2023-09-01 10:50:16,747 INFO L130 PetriNetUnfolder]: 11426/38692 cut-off events. [2023-09-01 10:50:16,747 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:50:17,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50056 conditions, 38692 events. 11426/38692 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 438900 event pairs, 7181 based on Foata normal form. 0/34422 useless extension candidates. Maximal degree in co-relation 24353. Up to 11264 conditions per place. [2023-09-01 10:50:17,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 357 places, 419 transitions, 1036 flow [2023-09-01 10:50:17,961 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 357 places, 419 transitions, 1036 flow [2023-09-01 10:50:17,961 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:17,961 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 357 places, 419 transitions, 1036 flow [2023-09-01 10:50:17,961 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 357 places, 419 transitions, 1036 flow [2023-09-01 10:50:17,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 419 transitions, 1036 flow [2023-09-01 10:50:25,706 INFO L130 PetriNetUnfolder]: 11426/38692 cut-off events. [2023-09-01 10:50:25,706 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:50:26,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50056 conditions, 38692 events. 11426/38692 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 743. Compared 438900 event pairs, 7181 based on Foata normal form. 0/34422 useless extension candidates. Maximal degree in co-relation 24353. Up to 11264 conditions per place. [2023-09-01 10:50:28,011 INFO L119 LiptonReduction]: Number of co-enabled transitions 127512 [2023-09-01 10:50:31,594 INFO L134 LiptonReduction]: Checked pairs total: 392949 [2023-09-01 10:50:31,594 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-09-01 10:50:31,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:50:31,595 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46f902e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:50:31,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:50:31,712 INFO L130 PetriNetUnfolder]: 361/1167 cut-off events. [2023-09-01 10:50:31,712 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 10:50:31,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:50:31,712 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:50:31,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:50:31,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:50:31,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1416824931, now seen corresponding path program 1 times [2023-09-01 10:50:31,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:50:31,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947971247] [2023-09-01 10:50:31,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:50:31,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:50:31,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:31,736 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:50:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:50:31,758 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:50:31,758 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:50:31,758 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:50:31,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 10:50:31,759 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:50:31,759 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:50:31,760 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:50:31,760 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 10:50:31,791 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:50:31,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 382 places, 449 transitions, 1126 flow [2023-09-01 10:50:49,458 INFO L130 PetriNetUnfolder]: 24752/78695 cut-off events. [2023-09-01 10:50:49,458 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:50:51,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103386 conditions, 78695 events. 24752/78695 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 978536 event pairs, 16398 based on Foata normal form. 0/70314 useless extension candidates. Maximal degree in co-relation 50032. Up to 24576 conditions per place. [2023-09-01 10:50:51,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 382 places, 449 transitions, 1126 flow [2023-09-01 10:50:52,922 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 382 places, 449 transitions, 1126 flow [2023-09-01 10:50:52,922 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:50:52,922 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 382 places, 449 transitions, 1126 flow [2023-09-01 10:50:52,923 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 382 places, 449 transitions, 1126 flow [2023-09-01 10:50:52,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 382 places, 449 transitions, 1126 flow [2023-09-01 10:51:12,076 INFO L130 PetriNetUnfolder]: 24752/78695 cut-off events. [2023-09-01 10:51:12,076 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:51:14,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103386 conditions, 78695 events. 24752/78695 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1389. Compared 978536 event pairs, 16398 based on Foata normal form. 0/70314 useless extension candidates. Maximal degree in co-relation 50032. Up to 24576 conditions per place. [2023-09-01 10:51:18,023 INFO L119 LiptonReduction]: Number of co-enabled transitions 149520 [2023-09-01 10:51:21,603 INFO L134 LiptonReduction]: Checked pairs total: 458781 [2023-09-01 10:51:21,603 INFO L136 LiptonReduction]: Total number of compositions: 265 [2023-09-01 10:51:21,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:51:21,605 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46f902e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:51:21,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:51:21,781 INFO L130 PetriNetUnfolder]: 573/1709 cut-off events. [2023-09-01 10:51:21,781 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 10:51:21,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:51:21,781 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 10:51:21,781 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:51:21,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:51:21,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1826489402, now seen corresponding path program 1 times [2023-09-01 10:51:21,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:51:21,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604578525] [2023-09-01 10:51:21,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:51:21,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:51:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:51:21,798 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:51:21,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:51:21,815 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:51:21,816 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:51:21,816 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:51:21,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 10:51:21,816 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:51:21,818 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:51:21,818 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:51:21,819 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 10:51:21,844 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 10:51:21,846 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 407 places, 479 transitions, 1218 flow [2023-09-01 10:52:00,732 INFO L130 PetriNetUnfolder]: 53438/160682 cut-off events. [2023-09-01 10:52:00,733 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:52:08,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214061 conditions, 160682 events. 53438/160682 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 2163638 event pairs, 36879 based on Foata normal form. 0/144094 useless extension candidates. Maximal degree in co-relation 103360. Up to 53248 conditions per place. [2023-09-01 10:52:08,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 407 places, 479 transitions, 1218 flow [2023-09-01 10:52:12,484 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 407 places, 479 transitions, 1218 flow [2023-09-01 10:52:12,484 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:52:12,485 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 407 places, 479 transitions, 1218 flow [2023-09-01 10:52:12,485 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 407 places, 479 transitions, 1218 flow [2023-09-01 10:52:12,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 407 places, 479 transitions, 1218 flow [2023-09-01 10:52:51,314 INFO L130 PetriNetUnfolder]: 53438/160682 cut-off events. [2023-09-01 10:52:51,315 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:52:59,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214061 conditions, 160682 events. 53438/160682 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2770. Compared 2163638 event pairs, 36879 based on Foata normal form. 0/144094 useless extension candidates. Maximal degree in co-relation 103360. Up to 53248 conditions per place. [2023-09-01 10:53:12,289 INFO L119 LiptonReduction]: Number of co-enabled transitions 173264 [2023-09-01 10:53:15,949 INFO L134 LiptonReduction]: Checked pairs total: 536420 [2023-09-01 10:53:15,950 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-09-01 10:53:15,951 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:53:15,951 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@46f902e1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:53:15,951 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:53:16,187 INFO L130 PetriNetUnfolder]: 940/2582 cut-off events. [2023-09-01 10:53:16,187 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 10:53:16,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:53:16,188 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 10:53:16,188 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:53:16,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:53:16,188 INFO L85 PathProgramCache]: Analyzing trace with hash 515426409, now seen corresponding path program 1 times [2023-09-01 10:53:16,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:53:16,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588703928] [2023-09-01 10:53:16,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:53:16,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:53:16,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:16,205 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:53:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:53:16,221 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:53:16,221 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:53:16,221 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:53:16,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 10:53:16,222 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:53:16,222 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:53:16,222 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:53:16,222 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 10:53:16,245 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 10:53:16,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 509 transitions, 1312 flow