./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/valid-memsafety.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 00:42:51,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 00:42:51,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 00:42:51,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 00:42:51,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 00:42:51,719 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 00:42:51,721 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 00:42:51,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 00:42:51,726 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 00:42:51,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 00:42:51,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 00:42:51,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 00:42:51,734 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 00:42:51,736 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 00:42:51,737 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 00:42:51,742 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 00:42:51,743 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 00:42:51,745 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 00:42:51,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 00:42:51,751 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 00:42:51,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 00:42:51,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 00:42:51,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 00:42:51,754 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 00:42:51,761 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 00:42:51,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 00:42:51,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 00:42:51,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 00:42:51,764 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 00:42:51,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 00:42:51,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 00:42:51,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 00:42:51,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 00:42:51,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 00:42:51,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 00:42:51,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 00:42:51,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 00:42:51,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 00:42:51,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 00:42:51,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 00:42:51,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 00:42:51,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-09-01 00:42:51,802 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 00:42:51,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 00:42:51,804 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 00:42:51,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 00:42:51,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 00:42:51,805 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 00:42:51,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 00:42:51,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 00:42:51,806 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 00:42:51,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 00:42:51,807 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 00:42:51,807 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 00:42:51,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 00:42:51,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 00:42:51,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 00:42:51,808 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-09-01 00:42:51,808 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-09-01 00:42:51,808 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-09-01 00:42:51,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 00:42:51,808 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-09-01 00:42:51,809 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 00:42:51,809 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 00:42:51,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 00:42:51,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 00:42:51,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 00:42:51,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:42:51,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 00:42:51,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 00:42:51,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 00:42:51,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 00:42:51,811 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 00:42:51,811 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 00:42:51,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 00:42:51,811 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 00:42:51,811 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 00:42:52,132 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 00:42:52,153 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 00:42:52,155 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 00:42:52,156 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 00:42:52,156 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 00:42:52,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-09-01 00:42:53,243 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 00:42:53,540 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 00:42:53,540 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-09-01 00:42:53,555 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9243967d8/226064d16d924b5b82baf43f7d923f9f/FLAG88227f9a7 [2023-09-01 00:42:53,566 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9243967d8/226064d16d924b5b82baf43f7d923f9f [2023-09-01 00:42:53,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 00:42:53,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 00:42:53,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 00:42:53,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 00:42:53,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 00:42:53,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:42:53" (1/1) ... [2023-09-01 00:42:53,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e4bfbd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:53, skipping insertion in model container [2023-09-01 00:42:53,581 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:42:53" (1/1) ... [2023-09-01 00:42:53,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 00:42:53,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 00:42:53,960 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_41-trylock_racefree.i[30176,30189] [2023-09-01 00:42:53,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:42:53,997 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 00:42:54,038 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_41-trylock_racefree.i[30176,30189] [2023-09-01 00:42:54,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 00:42:54,144 INFO L208 MainTranslator]: Completed translation [2023-09-01 00:42:54,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:54 WrapperNode [2023-09-01 00:42:54,150 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 00:42:54,151 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 00:42:54,151 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 00:42:54,151 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 00:42:54,158 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:54" (1/1) ... [2023-09-01 00:42:54,185 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:54" (1/1) ... [2023-09-01 00:42:54,206 INFO L138 Inliner]: procedures = 171, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 77 [2023-09-01 00:42:54,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 00:42:54,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 00:42:54,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 00:42:54,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 00:42:54,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:54" (1/1) ... [2023-09-01 00:42:54,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:54" (1/1) ... [2023-09-01 00:42:54,228 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:54" (1/1) ... [2023-09-01 00:42:54,228 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:54" (1/1) ... [2023-09-01 00:42:54,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:54" (1/1) ... [2023-09-01 00:42:54,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:54" (1/1) ... [2023-09-01 00:42:54,252 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:54" (1/1) ... [2023-09-01 00:42:54,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:54" (1/1) ... [2023-09-01 00:42:54,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 00:42:54,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 00:42:54,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 00:42:54,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 00:42:54,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:54" (1/1) ... [2023-09-01 00:42:54,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 00:42:54,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 00:42:54,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 00:42:54,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 00:42:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 00:42:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 00:42:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 00:42:54,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 00:42:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 00:42:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 00:42:54,343 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 00:42:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 00:42:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-09-01 00:42:54,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 00:42:54,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 00:42:54,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 00:42:54,345 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 00:42:54,483 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 00:42:54,485 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 00:42:54,706 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 00:42:54,712 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 00:42:54,712 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-09-01 00:42:54,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:42:54 BoogieIcfgContainer [2023-09-01 00:42:54,714 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 00:42:54,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 00:42:54,716 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 00:42:54,718 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 00:42:54,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:42:53" (1/3) ... [2023-09-01 00:42:54,719 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36736682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:42:54, skipping insertion in model container [2023-09-01 00:42:54,719 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:42:54" (2/3) ... [2023-09-01 00:42:54,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36736682 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:42:54, skipping insertion in model container [2023-09-01 00:42:54,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:42:54" (3/3) ... [2023-09-01 00:42:54,721 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2023-09-01 00:42:54,735 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 00:42:54,735 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 00:42:54,735 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 00:42:54,793 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 00:42:54,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 111 transitions, 230 flow [2023-09-01 00:42:54,920 INFO L130 PetriNetUnfolder]: 21/155 cut-off events. [2023-09-01 00:42:54,921 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 00:42:54,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 155 events. 21/155 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 414 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 77. Up to 6 conditions per place. [2023-09-01 00:42:54,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 111 transitions, 230 flow [2023-09-01 00:42:54,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 96 places, 106 transitions, 217 flow [2023-09-01 00:42:54,937 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:42:54,949 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 96 places, 106 transitions, 217 flow [2023-09-01 00:42:54,955 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 96 places, 106 transitions, 217 flow [2023-09-01 00:42:54,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 106 transitions, 217 flow [2023-09-01 00:42:55,017 INFO L130 PetriNetUnfolder]: 20/150 cut-off events. [2023-09-01 00:42:55,017 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:42:55,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 150 events. 20/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 400 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 77. Up to 6 conditions per place. [2023-09-01 00:42:55,022 INFO L119 LiptonReduction]: Number of co-enabled transitions 2800 [2023-09-01 00:42:57,392 INFO L134 LiptonReduction]: Checked pairs total: 4442 [2023-09-01 00:42:57,393 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-09-01 00:42:57,405 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:42:57,410 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4254583d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:42:57,411 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:42:57,420 INFO L130 PetriNetUnfolder]: 5/34 cut-off events. [2023-09-01 00:42:57,421 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 00:42:57,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:42:57,421 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 00:42:57,422 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:42:57,426 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:42:57,426 INFO L85 PathProgramCache]: Analyzing trace with hash -265523879, now seen corresponding path program 1 times [2023-09-01 00:42:57,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:42:57,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397506187] [2023-09-01 00:42:57,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:42:57,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:42:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:42:57,570 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:42:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:42:57,624 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:42:57,626 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:42:57,627 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:42:57,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 00:42:57,628 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:42:57,636 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:42:57,637 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:42:57,637 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 00:42:57,667 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 00:42:57,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 141 transitions, 300 flow [2023-09-01 00:42:57,717 INFO L130 PetriNetUnfolder]: 37/258 cut-off events. [2023-09-01 00:42:57,717 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:42:57,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 258 events. 37/258 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 805 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 157. Up to 9 conditions per place. [2023-09-01 00:42:57,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 141 transitions, 300 flow [2023-09-01 00:42:57,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 141 transitions, 300 flow [2023-09-01 00:42:57,725 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:42:57,725 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 141 transitions, 300 flow [2023-09-01 00:42:57,725 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 141 transitions, 300 flow [2023-09-01 00:42:57,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 141 transitions, 300 flow [2023-09-01 00:42:57,755 INFO L130 PetriNetUnfolder]: 37/258 cut-off events. [2023-09-01 00:42:57,756 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 00:42:57,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 272 conditions, 258 events. 37/258 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 805 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 157. Up to 9 conditions per place. [2023-09-01 00:42:57,762 INFO L119 LiptonReduction]: Number of co-enabled transitions 7784 [2023-09-01 00:42:59,932 INFO L134 LiptonReduction]: Checked pairs total: 18182 [2023-09-01 00:42:59,933 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-09-01 00:42:59,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:42:59,939 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4254583d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:42:59,942 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:42:59,949 INFO L130 PetriNetUnfolder]: 15/75 cut-off events. [2023-09-01 00:42:59,949 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 00:42:59,950 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:42:59,950 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 00:42:59,950 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:42:59,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:42:59,951 INFO L85 PathProgramCache]: Analyzing trace with hash 47551433, now seen corresponding path program 1 times [2023-09-01 00:42:59,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:42:59,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636160056] [2023-09-01 00:42:59,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:42:59,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:42:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:42:59,975 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:42:59,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:42:59,997 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:42:59,997 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:42:59,998 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:42:59,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 00:42:59,998 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:42:59,999 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:42:59,999 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:42:59,999 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 00:43:00,015 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 00:43:00,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 171 transitions, 372 flow [2023-09-01 00:43:00,064 INFO L130 PetriNetUnfolder]: 58/402 cut-off events. [2023-09-01 00:43:00,064 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:43:00,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 402 events. 58/402 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1402 event pairs, 1 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 266. Up to 16 conditions per place. [2023-09-01 00:43:00,066 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 171 transitions, 372 flow [2023-09-01 00:43:00,069 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 171 transitions, 372 flow [2023-09-01 00:43:00,069 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:00,069 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 171 transitions, 372 flow [2023-09-01 00:43:00,070 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 171 transitions, 372 flow [2023-09-01 00:43:00,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 171 transitions, 372 flow [2023-09-01 00:43:00,104 INFO L130 PetriNetUnfolder]: 58/402 cut-off events. [2023-09-01 00:43:00,104 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 00:43:00,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 402 events. 58/402 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1402 event pairs, 1 based on Foata normal form. 0/304 useless extension candidates. Maximal degree in co-relation 266. Up to 16 conditions per place. [2023-09-01 00:43:00,118 INFO L119 LiptonReduction]: Number of co-enabled transitions 14280 [2023-09-01 00:43:02,291 INFO L134 LiptonReduction]: Checked pairs total: 31836 [2023-09-01 00:43:02,291 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-09-01 00:43:02,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:02,294 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4254583d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:02,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:02,302 INFO L130 PetriNetUnfolder]: 26/118 cut-off events. [2023-09-01 00:43:02,303 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 00:43:02,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:02,303 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 00:43:02,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:02,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:02,304 INFO L85 PathProgramCache]: Analyzing trace with hash -2017062314, now seen corresponding path program 1 times [2023-09-01 00:43:02,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:02,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614030302] [2023-09-01 00:43:02,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:02,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:02,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:02,328 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:02,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:02,349 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:02,349 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:02,350 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:02,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 00:43:02,350 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:02,351 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:02,351 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:02,351 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 00:43:02,368 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 00:43:02,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 201 transitions, 446 flow [2023-09-01 00:43:02,448 INFO L130 PetriNetUnfolder]: 91/630 cut-off events. [2023-09-01 00:43:02,449 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:43:02,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 630 events. 91/630 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2593 event pairs, 6 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 422. Up to 32 conditions per place. [2023-09-01 00:43:02,453 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 201 transitions, 446 flow [2023-09-01 00:43:02,457 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 175 places, 201 transitions, 446 flow [2023-09-01 00:43:02,457 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:02,457 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 175 places, 201 transitions, 446 flow [2023-09-01 00:43:02,458 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 175 places, 201 transitions, 446 flow [2023-09-01 00:43:02,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 201 transitions, 446 flow [2023-09-01 00:43:02,522 INFO L130 PetriNetUnfolder]: 91/630 cut-off events. [2023-09-01 00:43:02,523 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 00:43:02,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 685 conditions, 630 events. 91/630 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2593 event pairs, 6 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 422. Up to 32 conditions per place. [2023-09-01 00:43:02,548 INFO L119 LiptonReduction]: Number of co-enabled transitions 22512 [2023-09-01 00:43:04,907 INFO L134 LiptonReduction]: Checked pairs total: 61133 [2023-09-01 00:43:04,907 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-09-01 00:43:04,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:04,909 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4254583d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:04,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:04,921 INFO L130 PetriNetUnfolder]: 38/170 cut-off events. [2023-09-01 00:43:04,921 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 00:43:04,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:04,922 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 00:43:04,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:04,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:04,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1656087317, now seen corresponding path program 1 times [2023-09-01 00:43:04,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:04,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71468100] [2023-09-01 00:43:04,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:04,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:04,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:04,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:04,969 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:04,969 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:04,969 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:04,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 00:43:04,970 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:04,971 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:04,971 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:04,971 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 00:43:04,990 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 00:43:04,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 231 transitions, 522 flow [2023-09-01 00:43:05,137 INFO L130 PetriNetUnfolder]: 152/1030 cut-off events. [2023-09-01 00:43:05,137 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:43:05,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 1030 events. 152/1030 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5088 event pairs, 23 based on Foata normal form. 0/780 useless extension candidates. Maximal degree in co-relation 675. Up to 80 conditions per place. [2023-09-01 00:43:05,151 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 231 transitions, 522 flow [2023-09-01 00:43:05,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 231 transitions, 522 flow [2023-09-01 00:43:05,159 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:05,159 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 231 transitions, 522 flow [2023-09-01 00:43:05,160 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 231 transitions, 522 flow [2023-09-01 00:43:05,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 231 transitions, 522 flow [2023-09-01 00:43:05,281 INFO L130 PetriNetUnfolder]: 152/1030 cut-off events. [2023-09-01 00:43:05,281 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 00:43:05,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1141 conditions, 1030 events. 152/1030 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 5088 event pairs, 23 based on Foata normal form. 0/780 useless extension candidates. Maximal degree in co-relation 675. Up to 80 conditions per place. [2023-09-01 00:43:05,317 INFO L119 LiptonReduction]: Number of co-enabled transitions 32480 [2023-09-01 00:43:07,635 INFO L134 LiptonReduction]: Checked pairs total: 88900 [2023-09-01 00:43:07,637 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-09-01 00:43:07,641 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:07,643 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4254583d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:07,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:07,670 INFO L130 PetriNetUnfolder]: 47/222 cut-off events. [2023-09-01 00:43:07,670 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 00:43:07,671 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:07,671 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:43:07,671 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:07,672 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:07,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1708864476, now seen corresponding path program 1 times [2023-09-01 00:43:07,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:07,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207869310] [2023-09-01 00:43:07,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:07,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:07,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:07,736 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:07,762 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:07,764 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:07,765 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:07,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 00:43:07,765 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:07,766 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:07,766 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:07,766 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 00:43:07,797 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 00:43:07,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 261 transitions, 600 flow [2023-09-01 00:43:08,050 INFO L130 PetriNetUnfolder]: 277/1782 cut-off events. [2023-09-01 00:43:08,051 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:43:08,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2014 conditions, 1782 events. 277/1782 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10932 event pairs, 72 based on Foata normal form. 0/1356 useless extension candidates. Maximal degree in co-relation 1129. Up to 192 conditions per place. [2023-09-01 00:43:08,073 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 261 transitions, 600 flow [2023-09-01 00:43:08,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 261 transitions, 600 flow [2023-09-01 00:43:08,086 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:08,087 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 261 transitions, 600 flow [2023-09-01 00:43:08,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 261 transitions, 600 flow [2023-09-01 00:43:08,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 261 transitions, 600 flow [2023-09-01 00:43:08,363 INFO L130 PetriNetUnfolder]: 277/1782 cut-off events. [2023-09-01 00:43:08,363 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 00:43:08,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2014 conditions, 1782 events. 277/1782 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 10932 event pairs, 72 based on Foata normal form. 0/1356 useless extension candidates. Maximal degree in co-relation 1129. Up to 192 conditions per place. [2023-09-01 00:43:08,447 INFO L119 LiptonReduction]: Number of co-enabled transitions 44184 [2023-09-01 00:43:10,857 INFO L134 LiptonReduction]: Checked pairs total: 125473 [2023-09-01 00:43:10,857 INFO L136 LiptonReduction]: Total number of compositions: 161 [2023-09-01 00:43:10,859 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:10,859 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4254583d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:10,859 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:10,878 INFO L130 PetriNetUnfolder]: 69/307 cut-off events. [2023-09-01 00:43:10,879 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 00:43:10,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:10,879 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:43:10,879 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:10,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:10,880 INFO L85 PathProgramCache]: Analyzing trace with hash -140204415, now seen corresponding path program 1 times [2023-09-01 00:43:10,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:10,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143131449] [2023-09-01 00:43:10,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:10,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:10,904 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:10,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:10,938 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:10,938 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:10,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 00:43:10,938 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:10,941 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:10,941 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:10,941 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 00:43:10,976 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 00:43:10,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 291 transitions, 680 flow [2023-09-01 00:43:11,533 INFO L130 PetriNetUnfolder]: 546/3254 cut-off events. [2023-09-01 00:43:11,534 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:43:11,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3752 conditions, 3254 events. 546/3254 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 24107 event pairs, 201 based on Foata normal form. 0/2492 useless extension candidates. Maximal degree in co-relation 2000. Up to 448 conditions per place. [2023-09-01 00:43:11,642 INFO L82 GeneralOperation]: Start removeDead. Operand has 250 places, 291 transitions, 680 flow [2023-09-01 00:43:11,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 250 places, 291 transitions, 680 flow [2023-09-01 00:43:11,665 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:11,665 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 250 places, 291 transitions, 680 flow [2023-09-01 00:43:11,666 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 250 places, 291 transitions, 680 flow [2023-09-01 00:43:11,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 250 places, 291 transitions, 680 flow [2023-09-01 00:43:12,229 INFO L130 PetriNetUnfolder]: 546/3254 cut-off events. [2023-09-01 00:43:12,229 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 00:43:12,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3752 conditions, 3254 events. 546/3254 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 24107 event pairs, 201 based on Foata normal form. 0/2492 useless extension candidates. Maximal degree in co-relation 2000. Up to 448 conditions per place. [2023-09-01 00:43:12,429 INFO L119 LiptonReduction]: Number of co-enabled transitions 57624 [2023-09-01 00:43:14,876 INFO L134 LiptonReduction]: Checked pairs total: 164856 [2023-09-01 00:43:14,877 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-09-01 00:43:14,878 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:14,878 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4254583d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:14,879 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:14,914 INFO L130 PetriNetUnfolder]: 91/405 cut-off events. [2023-09-01 00:43:14,914 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 00:43:14,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:14,914 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:43:14,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:14,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:14,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1664135207, now seen corresponding path program 1 times [2023-09-01 00:43:14,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:14,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933231664] [2023-09-01 00:43:14,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:14,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:14,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:14,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:14,973 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:14,974 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:14,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 00:43:14,974 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:14,975 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:14,975 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:14,975 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 00:43:14,997 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 00:43:15,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 321 transitions, 762 flow [2023-09-01 00:43:16,234 INFO L130 PetriNetUnfolder]: 1135/6198 cut-off events. [2023-09-01 00:43:16,234 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:43:16,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7283 conditions, 6198 events. 1135/6198 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 54402 event pairs, 522 based on Foata normal form. 0/4780 useless extension candidates. Maximal degree in co-relation 3736. Up to 1024 conditions per place. [2023-09-01 00:43:16,311 INFO L82 GeneralOperation]: Start removeDead. Operand has 275 places, 321 transitions, 762 flow [2023-09-01 00:43:16,357 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 275 places, 321 transitions, 762 flow [2023-09-01 00:43:16,357 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:16,357 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 275 places, 321 transitions, 762 flow [2023-09-01 00:43:16,358 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 275 places, 321 transitions, 762 flow [2023-09-01 00:43:16,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 275 places, 321 transitions, 762 flow [2023-09-01 00:43:17,293 INFO L130 PetriNetUnfolder]: 1135/6198 cut-off events. [2023-09-01 00:43:17,293 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 00:43:17,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7283 conditions, 6198 events. 1135/6198 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 54402 event pairs, 522 based on Foata normal form. 0/4780 useless extension candidates. Maximal degree in co-relation 3736. Up to 1024 conditions per place. [2023-09-01 00:43:17,639 INFO L119 LiptonReduction]: Number of co-enabled transitions 72800 [2023-09-01 00:43:20,435 INFO L134 LiptonReduction]: Checked pairs total: 215906 [2023-09-01 00:43:20,435 INFO L136 LiptonReduction]: Total number of compositions: 192 [2023-09-01 00:43:20,437 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:20,438 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4254583d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:20,438 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:20,517 INFO L130 PetriNetUnfolder]: 114/522 cut-off events. [2023-09-01 00:43:20,517 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 00:43:20,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:20,518 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:43:20,518 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:20,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:20,518 INFO L85 PathProgramCache]: Analyzing trace with hash -989143428, now seen corresponding path program 1 times [2023-09-01 00:43:20,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:20,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002758680] [2023-09-01 00:43:20,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:20,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:20,557 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:20,582 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:20,582 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:20,582 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:20,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 00:43:20,583 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:20,583 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:20,584 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:20,584 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 00:43:20,608 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 00:43:20,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 351 transitions, 846 flow [2023-09-01 00:43:22,772 INFO L130 PetriNetUnfolder]: 2428/12150 cut-off events. [2023-09-01 00:43:22,773 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:43:22,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14527 conditions, 12150 events. 2428/12150 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 124474 event pairs, 1291 based on Foata normal form. 0/9436 useless extension candidates. Maximal degree in co-relation 7265. Up to 2304 conditions per place. [2023-09-01 00:43:22,920 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 351 transitions, 846 flow [2023-09-01 00:43:22,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 300 places, 351 transitions, 846 flow [2023-09-01 00:43:22,997 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:22,998 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 300 places, 351 transitions, 846 flow [2023-09-01 00:43:22,998 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 300 places, 351 transitions, 846 flow [2023-09-01 00:43:22,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 300 places, 351 transitions, 846 flow [2023-09-01 00:43:24,934 INFO L130 PetriNetUnfolder]: 2428/12150 cut-off events. [2023-09-01 00:43:24,934 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 00:43:25,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14527 conditions, 12150 events. 2428/12150 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 124474 event pairs, 1291 based on Foata normal form. 0/9436 useless extension candidates. Maximal degree in co-relation 7265. Up to 2304 conditions per place. [2023-09-01 00:43:25,552 INFO L119 LiptonReduction]: Number of co-enabled transitions 89712 [2023-09-01 00:43:28,133 INFO L134 LiptonReduction]: Checked pairs total: 265195 [2023-09-01 00:43:28,133 INFO L136 LiptonReduction]: Total number of compositions: 206 [2023-09-01 00:43:28,135 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:28,137 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4254583d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:28,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:28,258 INFO L130 PetriNetUnfolder]: 169/729 cut-off events. [2023-09-01 00:43:28,259 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 00:43:28,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:28,259 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:43:28,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:28,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:28,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1781771988, now seen corresponding path program 1 times [2023-09-01 00:43:28,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:28,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417380512] [2023-09-01 00:43:28,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:28,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:28,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:28,291 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:28,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:28,332 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:28,333 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:28,333 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:28,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 00:43:28,333 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:28,334 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:28,334 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:28,334 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 00:43:28,367 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 00:43:28,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 381 transitions, 932 flow [2023-09-01 00:43:32,810 INFO L130 PetriNetUnfolder]: 5257/24246 cut-off events. [2023-09-01 00:43:32,811 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:43:33,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29452 conditions, 24246 events. 5257/24246 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 278491 event pairs, 3084 based on Foata normal form. 0/18956 useless extension candidates. Maximal degree in co-relation 14507. Up to 5120 conditions per place. [2023-09-01 00:43:33,182 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 381 transitions, 932 flow [2023-09-01 00:43:33,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 381 transitions, 932 flow [2023-09-01 00:43:33,530 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:33,530 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 381 transitions, 932 flow [2023-09-01 00:43:33,531 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 381 transitions, 932 flow [2023-09-01 00:43:33,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 381 transitions, 932 flow [2023-09-01 00:43:37,772 INFO L130 PetriNetUnfolder]: 5257/24246 cut-off events. [2023-09-01 00:43:37,772 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 00:43:38,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29452 conditions, 24246 events. 5257/24246 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 594. Compared 278491 event pairs, 3084 based on Foata normal form. 0/18956 useless extension candidates. Maximal degree in co-relation 14507. Up to 5120 conditions per place. [2023-09-01 00:43:39,204 INFO L119 LiptonReduction]: Number of co-enabled transitions 108360 [2023-09-01 00:43:42,185 INFO L134 LiptonReduction]: Checked pairs total: 326918 [2023-09-01 00:43:42,185 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-09-01 00:43:42,186 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:43:42,187 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4254583d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:43:42,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:43:42,250 INFO L130 PetriNetUnfolder]: 245/1015 cut-off events. [2023-09-01 00:43:42,250 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 00:43:42,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:43:42,251 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:43:42,251 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:43:42,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:43:42,251 INFO L85 PathProgramCache]: Analyzing trace with hash -378350276, now seen corresponding path program 1 times [2023-09-01 00:43:42,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:43:42,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469873306] [2023-09-01 00:43:42,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:43:42,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:43:42,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:42,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:43:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:43:42,325 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:43:42,325 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:43:42,325 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:43:42,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 00:43:42,326 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:43:42,326 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:43:42,326 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:43:42,326 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 00:43:42,355 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 00:43:42,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 411 transitions, 1020 flow [2023-09-01 00:43:52,174 INFO L130 PetriNetUnfolder]: 11414/48886 cut-off events. [2023-09-01 00:43:52,174 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:43:54,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60250 conditions, 48886 events. 11414/48886 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 628726 event pairs, 7181 based on Foata normal form. 0/38460 useless extension candidates. Maximal degree in co-relation 29430. Up to 11264 conditions per place. [2023-09-01 00:43:54,002 INFO L82 GeneralOperation]: Start removeDead. Operand has 350 places, 411 transitions, 1020 flow [2023-09-01 00:43:54,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 350 places, 411 transitions, 1020 flow [2023-09-01 00:43:54,799 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:43:54,799 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 350 places, 411 transitions, 1020 flow [2023-09-01 00:43:54,799 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 350 places, 411 transitions, 1020 flow [2023-09-01 00:43:54,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 350 places, 411 transitions, 1020 flow [2023-09-01 00:44:04,273 INFO L130 PetriNetUnfolder]: 11414/48886 cut-off events. [2023-09-01 00:44:04,273 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 00:44:05,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60250 conditions, 48886 events. 11414/48886 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 1134. Compared 628726 event pairs, 7181 based on Foata normal form. 0/38460 useless extension candidates. Maximal degree in co-relation 29430. Up to 11264 conditions per place. [2023-09-01 00:44:07,723 INFO L119 LiptonReduction]: Number of co-enabled transitions 128744 [2023-09-01 00:44:10,604 INFO L134 LiptonReduction]: Checked pairs total: 382239 [2023-09-01 00:44:10,604 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-09-01 00:44:10,605 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:44:10,605 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=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4254583d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:44:10,605 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:44:10,711 INFO L130 PetriNetUnfolder]: 372/1452 cut-off events. [2023-09-01 00:44:10,711 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 00:44:10,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:44:10,711 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:44:10,711 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:44:10,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:44:10,712 INFO L85 PathProgramCache]: Analyzing trace with hash 1922295691, now seen corresponding path program 1 times [2023-09-01 00:44:10,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:44:10,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131703402] [2023-09-01 00:44:10,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:44:10,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:44:10,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:10,737 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:44:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:44:10,772 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:44:10,777 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:44:10,777 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:44:10,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 00:44:10,777 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:44:10,778 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:44:10,778 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:44:10,778 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 00:44:10,813 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 00:44:10,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 375 places, 441 transitions, 1110 flow [2023-09-01 00:44:32,329 INFO L130 PetriNetUnfolder]: 24739/99126 cut-off events. [2023-09-01 00:44:32,329 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:44:36,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123817 conditions, 99126 events. 24739/99126 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2195. Compared 1389924 event pairs, 16398 based on Foata normal form. 0/78444 useless extension candidates. Maximal degree in co-relation 60228. Up to 24576 conditions per place. [2023-09-01 00:44:36,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 375 places, 441 transitions, 1110 flow [2023-09-01 00:44:38,466 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 375 places, 441 transitions, 1110 flow [2023-09-01 00:44:38,467 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:44:38,467 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 375 places, 441 transitions, 1110 flow [2023-09-01 00:44:38,467 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 375 places, 441 transitions, 1110 flow [2023-09-01 00:44:38,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 375 places, 441 transitions, 1110 flow [2023-09-01 00:45:01,424 INFO L130 PetriNetUnfolder]: 24739/99126 cut-off events. [2023-09-01 00:45:01,424 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 00:45:05,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123817 conditions, 99126 events. 24739/99126 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 2195. Compared 1389924 event pairs, 16398 based on Foata normal form. 0/78444 useless extension candidates. Maximal degree in co-relation 60228. Up to 24576 conditions per place. [2023-09-01 00:45:12,661 INFO L119 LiptonReduction]: Number of co-enabled transitions 150864 [2023-09-01 00:45:15,662 INFO L134 LiptonReduction]: Checked pairs total: 464699 [2023-09-01 00:45:15,662 INFO L136 LiptonReduction]: Total number of compositions: 251 [2023-09-01 00:45:15,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:45:15,665 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4254583d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:45:15,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:45:15,831 INFO L130 PetriNetUnfolder]: 585/2127 cut-off events. [2023-09-01 00:45:15,831 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 00:45:15,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:45:15,832 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:45:15,832 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:45:15,832 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:45:15,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1346453633, now seen corresponding path program 1 times [2023-09-01 00:45:15,832 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:45:15,832 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311686692] [2023-09-01 00:45:15,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:45:15,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:45:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:15,855 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:45:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:45:15,880 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:45:15,880 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:45:15,880 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:45:15,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 00:45:15,881 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:45:15,881 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:45:15,881 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:45:15,882 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 00:45:15,913 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 00:45:15,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 400 places, 471 transitions, 1202 flow [2023-09-01 00:46:07,136 INFO L130 PetriNetUnfolder]: 53424/201590 cut-off events. [2023-09-01 00:46:07,136 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:46:19,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254969 conditions, 201590 events. 53424/201590 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4209. Compared 3071659 event pairs, 36879 based on Foata normal form. 0/160412 useless extension candidates. Maximal degree in co-relation 123795. Up to 53248 conditions per place. [2023-09-01 00:46:19,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 400 places, 471 transitions, 1202 flow [2023-09-01 00:46:23,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 400 places, 471 transitions, 1202 flow [2023-09-01 00:46:23,895 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 00:46:23,895 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 400 places, 471 transitions, 1202 flow [2023-09-01 00:46:23,895 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 400 places, 471 transitions, 1202 flow [2023-09-01 00:46:23,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 400 places, 471 transitions, 1202 flow [2023-09-01 00:47:12,542 INFO L130 PetriNetUnfolder]: 53424/201590 cut-off events. [2023-09-01 00:47:12,542 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 00:47:23,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254969 conditions, 201590 events. 53424/201590 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 4209. Compared 3071659 event pairs, 36879 based on Foata normal form. 0/160412 useless extension candidates. Maximal degree in co-relation 123795. Up to 53248 conditions per place. [2023-09-01 00:47:47,987 INFO L119 LiptonReduction]: Number of co-enabled transitions 174720 [2023-09-01 00:47:51,808 INFO L134 LiptonReduction]: Checked pairs total: 539098 [2023-09-01 00:47:51,809 INFO L136 LiptonReduction]: Total number of compositions: 266 [2023-09-01 00:47:51,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 00:47:51,833 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4254583d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 00:47:51,833 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 00:47:52,234 INFO L130 PetriNetUnfolder]: 940/3174 cut-off events. [2023-09-01 00:47:52,235 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 00:47:52,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 00:47:52,235 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 00:47:52,235 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 00:47:52,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 00:47:52,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1875326450, now seen corresponding path program 1 times [2023-09-01 00:47:52,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 00:47:52,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974672818] [2023-09-01 00:47:52,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 00:47:52,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 00:47:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:47:52,305 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 00:47:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 00:47:52,375 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 00:47:52,375 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 00:47:52,376 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 00:47:52,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 00:47:52,376 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 00:47:52,377 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 00:47:52,377 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 00:47:52,377 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 00:47:52,410 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 00:47:52,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 425 places, 501 transitions, 1296 flow