./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.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 data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 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 [2023-08-31 20:55:33,497 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:55:33,499 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:55:33,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:55:33,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:55:33,544 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:55:33,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:55:33,548 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:55:33,550 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:55:33,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:55:33,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:55:33,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:55:33,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:55:33,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:55:33,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:55:33,566 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:55:33,567 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:55:33,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:55:33,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:55:33,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:55:33,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:55:33,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:55:33,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:55:33,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:55:33,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:55:33,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:55:33,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:55:33,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:55:33,587 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:55:33,588 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:55:33,588 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:55:33,589 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:55:33,591 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:55:33,591 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:55:33,592 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:55:33,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:55:33,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:55:33,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:55:33,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:55:33,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:55:33,594 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:55:33,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:55:33,629 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:55:33,629 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:55:33,630 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:55:33,630 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:55:33,631 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:55:33,631 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:55:33,632 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:55:33,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:55:33,632 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:55:33,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:55:33,633 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:55:33,633 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:55:33,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:55:33,634 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:55:33,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:55:33,634 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:55:33,634 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:55:33,634 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:55:33,634 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:55:33,635 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:55:33,635 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:55:33,635 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:55:33,635 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:55:33,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:55:33,636 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:55:33,636 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:55:33,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:55:33,636 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:55:33,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:55:33,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:55:33,637 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:55:33,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:55:33,637 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:55:33,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:55:33,637 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:55:33,638 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:55:33,638 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:55:33,638 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> af00d5f4cc6a18cb9fd8a5151467217fe3ddb5ee0fa30b2cfbd9dd374105ee15 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:55:33,937 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:55:33,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:55:33,956 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:55:33,957 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:55:33,958 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:55:33,959 INFO L432 ainManager$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 [2023-08-31 20:55:35,230 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:55:35,458 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:55:35,458 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_41-trylock_racefree.i [2023-08-31 20:55:35,481 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/910045c78/0a04716e0cd94b01af8e78eea917f53b/FLAG35de9b456 [2023-08-31 20:55:35,491 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/910045c78/0a04716e0cd94b01af8e78eea917f53b [2023-08-31 20:55:35,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:55:35,493 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:55:35,495 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:55:35,495 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:55:35,498 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:55:35,498 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:55:35" (1/1) ... [2023-08-31 20:55:35,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11380396 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:35, skipping insertion in model container [2023-08-31 20:55:35,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:55:35" (1/1) ... [2023-08-31 20:55:35,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:55:35,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:55:35,845 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] [2023-08-31 20:55:35,869 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:55:35,892 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:55:35,929 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] [2023-08-31 20:55:35,947 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:55:35,987 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:55:35,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:35 WrapperNode [2023-08-31 20:55:35,988 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:55:35,989 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:55:35,989 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:55:35,989 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:55:35,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:35" (1/1) ... [2023-08-31 20:55:36,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:35" (1/1) ... [2023-08-31 20:55:36,046 INFO L138 Inliner]: procedures = 171, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 84 [2023-08-31 20:55:36,046 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:55:36,047 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:55:36,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:55:36,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:55:36,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:35" (1/1) ... [2023-08-31 20:55:36,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:35" (1/1) ... [2023-08-31 20:55:36,070 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:35" (1/1) ... [2023-08-31 20:55:36,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:35" (1/1) ... [2023-08-31 20:55:36,082 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:35" (1/1) ... [2023-08-31 20:55:36,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:35" (1/1) ... [2023-08-31 20:55:36,087 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:35" (1/1) ... [2023-08-31 20:55:36,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:35" (1/1) ... [2023-08-31 20:55:36,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:55:36,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:55:36,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:55:36,091 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:55:36,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:35" (1/1) ... [2023-08-31 20:55:36,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:55:36,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:55:36,117 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 20:55:36,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 20:55:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:55:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:55:36,148 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:55:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:55:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:55:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:55:36,149 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:55:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:55:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-31 20:55:36,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:55:36,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:55:36,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:55:36,151 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 20:55:36,276 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:55:36,281 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:55:36,524 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:55:36,534 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:55:36,534 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-31 20:55:36,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:55:36 BoogieIcfgContainer [2023-08-31 20:55:36,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:55:36,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:55:36,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:55:36,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:55:36,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:55:35" (1/3) ... [2023-08-31 20:55:36,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18bbf92d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:55:36, skipping insertion in model container [2023-08-31 20:55:36,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:55:35" (2/3) ... [2023-08-31 20:55:36,549 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18bbf92d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:55:36, skipping insertion in model container [2023-08-31 20:55:36,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:55:36" (3/3) ... [2023-08-31 20:55:36,550 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_41-trylock_racefree.i [2023-08-31 20:55:36,557 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:55:36,565 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:55:36,566 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-31 20:55:36,566 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:55:36,647 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:55:36,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 116 places, 127 transitions, 262 flow [2023-08-31 20:55:36,736 INFO L130 PetriNetUnfolder]: 21/172 cut-off events. [2023-08-31 20:55:36,737 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:55:36,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 172 events. 21/172 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 520 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 94. Up to 6 conditions per place. [2023-08-31 20:55:36,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 116 places, 127 transitions, 262 flow [2023-08-31 20:55:36,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 122 transitions, 249 flow [2023-08-31 20:55:36,751 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:36,759 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 112 places, 122 transitions, 249 flow [2023-08-31 20:55:36,762 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 112 places, 122 transitions, 249 flow [2023-08-31 20:55:36,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 112 places, 122 transitions, 249 flow [2023-08-31 20:55:36,800 INFO L130 PetriNetUnfolder]: 20/167 cut-off events. [2023-08-31 20:55:36,800 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:55:36,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172 conditions, 167 events. 20/167 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 515 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 94. Up to 6 conditions per place. [2023-08-31 20:55:36,817 INFO L119 LiptonReduction]: Number of co-enabled transitions 4488 [2023-08-31 20:55:39,035 INFO L134 LiptonReduction]: Checked pairs total: 11228 [2023-08-31 20:55:39,036 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-31 20:55:39,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:55:39,053 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e630238, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:55:39,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:55:39,057 INFO L130 PetriNetUnfolder]: 2/24 cut-off events. [2023-08-31 20:55:39,058 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:55:39,058 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:55:39,058 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:55:39,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:55:39,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:55:39,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1157250743, now seen corresponding path program 1 times [2023-08-31 20:55:39,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:55:39,071 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115780547] [2023-08-31 20:55:39,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:55:39,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:55:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:39,168 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:55:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:39,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:55:39,208 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:55:39,209 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:55:39,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:55:39,219 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:55:39,222 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:55:39,222 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:55:39,222 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:55:39,243 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:55:39,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 173 transitions, 364 flow [2023-08-31 20:55:39,282 INFO L130 PetriNetUnfolder]: 37/293 cut-off events. [2023-08-31 20:55:39,282 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:55:39,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 293 events. 37/293 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1027 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 174. Up to 9 conditions per place. [2023-08-31 20:55:39,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 157 places, 173 transitions, 364 flow [2023-08-31 20:55:39,288 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 173 transitions, 364 flow [2023-08-31 20:55:39,289 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:39,289 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 173 transitions, 364 flow [2023-08-31 20:55:39,289 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 173 transitions, 364 flow [2023-08-31 20:55:39,289 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 173 transitions, 364 flow [2023-08-31 20:55:39,333 INFO L130 PetriNetUnfolder]: 37/293 cut-off events. [2023-08-31 20:55:39,333 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:55:39,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307 conditions, 293 events. 37/293 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1027 event pairs, 0 based on Foata normal form. 0/237 useless extension candidates. Maximal degree in co-relation 174. Up to 9 conditions per place. [2023-08-31 20:55:39,347 INFO L119 LiptonReduction]: Number of co-enabled transitions 13816 [2023-08-31 20:55:41,758 INFO L134 LiptonReduction]: Checked pairs total: 42156 [2023-08-31 20:55:41,759 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-08-31 20:55:41,761 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:55:41,762 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e630238, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:55:41,762 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:55:41,767 INFO L130 PetriNetUnfolder]: 9/67 cut-off events. [2023-08-31 20:55:41,767 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 20:55:41,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:55:41,768 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:55:41,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:55:41,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:55:41,768 INFO L85 PathProgramCache]: Analyzing trace with hash 935451154, now seen corresponding path program 1 times [2023-08-31 20:55:41,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:55:41,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120783337] [2023-08-31 20:55:41,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:55:41,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:55:41,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:41,816 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:55:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:41,861 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:55:41,863 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:55:41,864 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:55:41,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:55:41,865 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:55:41,866 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:55:41,866 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:55:41,866 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:55:41,898 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:55:41,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 219 transitions, 468 flow [2023-08-31 20:55:41,948 INFO L130 PetriNetUnfolder]: 58/457 cut-off events. [2023-08-31 20:55:41,949 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:55:41,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 457 events. 58/457 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1745 event pairs, 1 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2023-08-31 20:55:41,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 219 transitions, 468 flow [2023-08-31 20:55:41,958 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 198 places, 219 transitions, 468 flow [2023-08-31 20:55:41,958 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:41,958 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 198 places, 219 transitions, 468 flow [2023-08-31 20:55:41,959 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 198 places, 219 transitions, 468 flow [2023-08-31 20:55:41,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 219 transitions, 468 flow [2023-08-31 20:55:42,019 INFO L130 PetriNetUnfolder]: 58/457 cut-off events. [2023-08-31 20:55:42,020 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:55:42,024 INFO L83 FinitePrefix]: Finished finitePrefix Result has 485 conditions, 457 events. 58/457 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1745 event pairs, 1 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 301. Up to 16 conditions per place. [2023-08-31 20:55:42,042 INFO L119 LiptonReduction]: Number of co-enabled transitions 26928 [2023-08-31 20:55:44,307 INFO L134 LiptonReduction]: Checked pairs total: 98808 [2023-08-31 20:55:44,309 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-31 20:55:44,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:55:44,313 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e630238, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:55:44,314 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:55:44,323 INFO L130 PetriNetUnfolder]: 20/120 cut-off events. [2023-08-31 20:55:44,323 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 20:55:44,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:55:44,324 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:55:44,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:55:44,329 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:55:44,329 INFO L85 PathProgramCache]: Analyzing trace with hash 281113788, now seen corresponding path program 1 times [2023-08-31 20:55:44,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:55:44,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592048744] [2023-08-31 20:55:44,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:55:44,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:55:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:44,354 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:55:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:44,370 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:55:44,370 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:55:44,370 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:55:44,370 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:55:44,370 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:55:44,371 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:55:44,371 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:55:44,371 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:55:44,391 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:55:44,394 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 265 transitions, 574 flow [2023-08-31 20:55:44,492 INFO L130 PetriNetUnfolder]: 91/709 cut-off events. [2023-08-31 20:55:44,493 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:55:44,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 709 events. 91/709 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3051 event pairs, 6 based on Foata normal form. 0/581 useless extension candidates. Maximal degree in co-relation 477. Up to 32 conditions per place. [2023-08-31 20:55:44,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 265 transitions, 574 flow [2023-08-31 20:55:44,504 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 239 places, 265 transitions, 574 flow [2023-08-31 20:55:44,505 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:44,505 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 239 places, 265 transitions, 574 flow [2023-08-31 20:55:44,505 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 239 places, 265 transitions, 574 flow [2023-08-31 20:55:44,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 265 transitions, 574 flow [2023-08-31 20:55:44,599 INFO L130 PetriNetUnfolder]: 91/709 cut-off events. [2023-08-31 20:55:44,599 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:55:44,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 764 conditions, 709 events. 91/709 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3051 event pairs, 6 based on Foata normal form. 0/581 useless extension candidates. Maximal degree in co-relation 477. Up to 32 conditions per place. [2023-08-31 20:55:44,633 INFO L119 LiptonReduction]: Number of co-enabled transitions 44176 [2023-08-31 20:55:46,997 INFO L134 LiptonReduction]: Checked pairs total: 199346 [2023-08-31 20:55:46,997 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-08-31 20:55:46,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:55:46,999 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e630238, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:55:47,000 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:55:47,013 INFO L130 PetriNetUnfolder]: 32/180 cut-off events. [2023-08-31 20:55:47,013 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-31 20:55:47,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:55:47,013 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:55:47,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:55:47,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:55:47,014 INFO L85 PathProgramCache]: Analyzing trace with hash -980253788, now seen corresponding path program 1 times [2023-08-31 20:55:47,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:55:47,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [315069] [2023-08-31 20:55:47,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:55:47,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:55:47,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:47,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:55:47,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:47,052 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:55:47,052 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:55:47,052 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:55:47,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:55:47,053 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:55:47,053 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:55:47,053 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:55:47,054 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:55:47,075 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:55:47,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 311 transitions, 682 flow [2023-08-31 20:55:47,263 INFO L130 PetriNetUnfolder]: 152/1141 cut-off events. [2023-08-31 20:55:47,264 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:55:47,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 1141 events. 152/1141 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5751 event pairs, 23 based on Foata normal form. 0/947 useless extension candidates. Maximal degree in co-relation 754. Up to 80 conditions per place. [2023-08-31 20:55:47,286 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 311 transitions, 682 flow [2023-08-31 20:55:47,297 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 311 transitions, 682 flow [2023-08-31 20:55:47,297 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:47,297 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 280 places, 311 transitions, 682 flow [2023-08-31 20:55:47,297 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 280 places, 311 transitions, 682 flow [2023-08-31 20:55:47,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 311 transitions, 682 flow [2023-08-31 20:55:47,488 INFO L130 PetriNetUnfolder]: 152/1141 cut-off events. [2023-08-31 20:55:47,489 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:55:47,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1252 conditions, 1141 events. 152/1141 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5751 event pairs, 23 based on Foata normal form. 0/947 useless extension candidates. Maximal degree in co-relation 754. Up to 80 conditions per place. [2023-08-31 20:55:47,595 INFO L119 LiptonReduction]: Number of co-enabled transitions 65560 [2023-08-31 20:55:49,960 INFO L134 LiptonReduction]: Checked pairs total: 266820 [2023-08-31 20:55:49,960 INFO L136 LiptonReduction]: Total number of compositions: 162 [2023-08-31 20:55:49,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:55:49,962 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e630238, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:55:49,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:55:49,982 INFO L130 PetriNetUnfolder]: 46/248 cut-off events. [2023-08-31 20:55:49,983 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-31 20:55:49,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:55:49,983 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:55:49,983 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:55:49,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:55:49,984 INFO L85 PathProgramCache]: Analyzing trace with hash -685031094, now seen corresponding path program 1 times [2023-08-31 20:55:49,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:55:49,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770984464] [2023-08-31 20:55:49,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:55:49,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:55:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:50,002 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:55:50,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:50,021 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:55:50,022 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:55:50,022 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:55:50,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:55:50,022 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:55:50,023 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:55:50,023 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:55:50,023 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:55:50,047 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:55:50,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 357 transitions, 792 flow [2023-08-31 20:55:50,478 INFO L130 PetriNetUnfolder]: 277/1941 cut-off events. [2023-08-31 20:55:50,478 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:55:50,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2173 conditions, 1941 events. 277/1941 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11816 event pairs, 72 based on Foata normal form. 0/1633 useless extension candidates. Maximal degree in co-relation 1240. Up to 192 conditions per place. [2023-08-31 20:55:50,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 321 places, 357 transitions, 792 flow [2023-08-31 20:55:50,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 321 places, 357 transitions, 792 flow [2023-08-31 20:55:50,534 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:50,535 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 321 places, 357 transitions, 792 flow [2023-08-31 20:55:50,535 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 321 places, 357 transitions, 792 flow [2023-08-31 20:55:50,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 321 places, 357 transitions, 792 flow [2023-08-31 20:55:50,911 INFO L130 PetriNetUnfolder]: 277/1941 cut-off events. [2023-08-31 20:55:50,912 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:55:50,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2173 conditions, 1941 events. 277/1941 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11816 event pairs, 72 based on Foata normal form. 0/1633 useless extension candidates. Maximal degree in co-relation 1240. Up to 192 conditions per place. [2023-08-31 20:55:51,020 INFO L119 LiptonReduction]: Number of co-enabled transitions 91080 [2023-08-31 20:55:53,443 INFO L134 LiptonReduction]: Checked pairs total: 377334 [2023-08-31 20:55:53,443 INFO L136 LiptonReduction]: Total number of compositions: 182 [2023-08-31 20:55:53,445 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:55:53,445 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e630238, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:55:53,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:55:53,481 INFO L130 PetriNetUnfolder]: 63/327 cut-off events. [2023-08-31 20:55:53,481 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-08-31 20:55:53,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:55:53,482 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:55:53,482 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:55:53,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:55:53,482 INFO L85 PathProgramCache]: Analyzing trace with hash 160591398, now seen corresponding path program 1 times [2023-08-31 20:55:53,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:55:53,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434930314] [2023-08-31 20:55:53,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:55:53,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:55:53,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:53,523 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:55:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:53,553 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:55:53,558 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:55:53,558 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:55:53,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:55:53,559 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:55:53,562 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:55:53,562 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:55:53,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:55:53,599 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:55:53,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 403 transitions, 904 flow [2023-08-31 20:55:54,387 INFO L130 PetriNetUnfolder]: 546/3493 cut-off events. [2023-08-31 20:55:54,387 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:55:54,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3991 conditions, 3493 events. 546/3493 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 25383 event pairs, 201 based on Foata normal form. 0/2975 useless extension candidates. Maximal degree in co-relation 2159. Up to 448 conditions per place. [2023-08-31 20:55:54,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 362 places, 403 transitions, 904 flow [2023-08-31 20:55:54,490 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 403 transitions, 904 flow [2023-08-31 20:55:54,490 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:54,490 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 362 places, 403 transitions, 904 flow [2023-08-31 20:55:54,490 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 362 places, 403 transitions, 904 flow [2023-08-31 20:55:54,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 403 transitions, 904 flow [2023-08-31 20:55:55,337 INFO L130 PetriNetUnfolder]: 546/3493 cut-off events. [2023-08-31 20:55:55,338 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:55:55,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3991 conditions, 3493 events. 546/3493 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 25383 event pairs, 201 based on Foata normal form. 0/2975 useless extension candidates. Maximal degree in co-relation 2159. Up to 448 conditions per place. [2023-08-31 20:55:55,580 INFO L119 LiptonReduction]: Number of co-enabled transitions 120736 [2023-08-31 20:55:58,144 INFO L134 LiptonReduction]: Checked pairs total: 516734 [2023-08-31 20:55:58,144 INFO L136 LiptonReduction]: Total number of compositions: 203 [2023-08-31 20:55:58,145 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:55:58,146 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e630238, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:55:58,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:55:58,189 INFO L130 PetriNetUnfolder]: 85/425 cut-off events. [2023-08-31 20:55:58,189 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-31 20:55:58,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:55:58,189 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:55:58,190 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:55:58,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:55:58,190 INFO L85 PathProgramCache]: Analyzing trace with hash 169711413, now seen corresponding path program 1 times [2023-08-31 20:55:58,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:55:58,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795100898] [2023-08-31 20:55:58,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:55:58,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:55:58,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:58,212 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:55:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:58,231 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:55:58,231 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:55:58,231 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:55:58,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:55:58,232 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:55:58,232 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:55:58,232 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:55:58,232 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:55:58,260 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:55:58,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 403 places, 449 transitions, 1018 flow [2023-08-31 20:55:59,810 INFO L130 PetriNetUnfolder]: 1135/6581 cut-off events. [2023-08-31 20:55:59,810 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:55:59,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7666 conditions, 6581 events. 1135/6581 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 56552 event pairs, 522 based on Foata normal form. 0/5661 useless extension candidates. Maximal degree in co-relation 3975. Up to 1024 conditions per place. [2023-08-31 20:55:59,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 403 places, 449 transitions, 1018 flow [2023-08-31 20:55:59,991 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 403 places, 449 transitions, 1018 flow [2023-08-31 20:55:59,991 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:59,992 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 403 places, 449 transitions, 1018 flow [2023-08-31 20:55:59,992 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 403 places, 449 transitions, 1018 flow [2023-08-31 20:55:59,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 403 places, 449 transitions, 1018 flow [2023-08-31 20:56:01,441 INFO L130 PetriNetUnfolder]: 1135/6581 cut-off events. [2023-08-31 20:56:01,441 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:56:01,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7666 conditions, 6581 events. 1135/6581 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 56552 event pairs, 522 based on Foata normal form. 0/5661 useless extension candidates. Maximal degree in co-relation 3975. Up to 1024 conditions per place. [2023-08-31 20:56:01,981 INFO L119 LiptonReduction]: Number of co-enabled transitions 154528 [2023-08-31 20:56:04,881 INFO L134 LiptonReduction]: Checked pairs total: 653747 [2023-08-31 20:56:04,882 INFO L136 LiptonReduction]: Total number of compositions: 221 [2023-08-31 20:56:04,883 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:04,884 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e630238, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:04,884 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:04,929 INFO L130 PetriNetUnfolder]: 118/555 cut-off events. [2023-08-31 20:56:04,929 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-08-31 20:56:04,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:04,929 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:56:04,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:04,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:04,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2087198671, now seen corresponding path program 1 times [2023-08-31 20:56:04,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:04,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121511748] [2023-08-31 20:56:04,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:04,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:04,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:04,955 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:04,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:04,975 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:04,975 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:04,975 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:04,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:56:04,976 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:04,976 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:04,976 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:04,976 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:56:05,022 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:56:05,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 444 places, 495 transitions, 1134 flow [2023-08-31 20:56:08,035 INFO L130 PetriNetUnfolder]: 2428/12805 cut-off events. [2023-08-31 20:56:08,035 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:56:08,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15182 conditions, 12805 events. 2428/12805 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 127655 event pairs, 1291 based on Foata normal form. 0/11099 useless extension candidates. Maximal degree in co-relation 7648. Up to 2304 conditions per place. [2023-08-31 20:56:08,284 INFO L82 GeneralOperation]: Start removeDead. Operand has 444 places, 495 transitions, 1134 flow [2023-08-31 20:56:08,427 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 444 places, 495 transitions, 1134 flow [2023-08-31 20:56:08,427 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:56:08,428 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 444 places, 495 transitions, 1134 flow [2023-08-31 20:56:08,428 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 444 places, 495 transitions, 1134 flow [2023-08-31 20:56:08,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 444 places, 495 transitions, 1134 flow [2023-08-31 20:56:11,545 INFO L130 PetriNetUnfolder]: 2428/12805 cut-off events. [2023-08-31 20:56:11,545 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:56:11,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15182 conditions, 12805 events. 2428/12805 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 127655 event pairs, 1291 based on Foata normal form. 0/11099 useless extension candidates. Maximal degree in co-relation 7648. Up to 2304 conditions per place. [2023-08-31 20:56:12,557 INFO L119 LiptonReduction]: Number of co-enabled transitions 192456 [2023-08-31 20:56:15,426 INFO L134 LiptonReduction]: Checked pairs total: 731558 [2023-08-31 20:56:15,426 INFO L136 LiptonReduction]: Total number of compositions: 242 [2023-08-31 20:56:15,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:15,434 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e630238, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:15,434 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:15,508 INFO L130 PetriNetUnfolder]: 155/710 cut-off events. [2023-08-31 20:56:15,508 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-08-31 20:56:15,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:15,508 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:56:15,509 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:15,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:15,509 INFO L85 PathProgramCache]: Analyzing trace with hash 821971303, now seen corresponding path program 1 times [2023-08-31 20:56:15,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:15,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599645858] [2023-08-31 20:56:15,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:15,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:15,531 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:15,552 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:15,552 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:15,553 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:15,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:56:15,553 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:15,553 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:15,553 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:15,554 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:56:15,584 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:56:15,588 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 485 places, 541 transitions, 1252 flow [2023-08-31 20:56:22,200 INFO L130 PetriNetUnfolder]: 5257/25429 cut-off events. [2023-08-31 20:56:22,200 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:56:22,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30635 conditions, 25429 events. 5257/25429 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 287166 event pairs, 3084 based on Foata normal form. 0/22169 useless extension candidates. Maximal degree in co-relation 15162. Up to 5120 conditions per place. [2023-08-31 20:56:22,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 485 places, 541 transitions, 1252 flow [2023-08-31 20:56:23,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 485 places, 541 transitions, 1252 flow [2023-08-31 20:56:23,261 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:56:23,261 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 485 places, 541 transitions, 1252 flow [2023-08-31 20:56:23,261 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 485 places, 541 transitions, 1252 flow [2023-08-31 20:56:23,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 485 places, 541 transitions, 1252 flow [2023-08-31 20:56:29,862 INFO L130 PetriNetUnfolder]: 5257/25429 cut-off events. [2023-08-31 20:56:29,862 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:56:30,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30635 conditions, 25429 events. 5257/25429 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 287166 event pairs, 3084 based on Foata normal form. 0/22169 useless extension candidates. Maximal degree in co-relation 15162. Up to 5120 conditions per place. [2023-08-31 20:56:32,240 INFO L119 LiptonReduction]: Number of co-enabled transitions 234520 [2023-08-31 20:56:35,310 INFO L134 LiptonReduction]: Checked pairs total: 1021229 [2023-08-31 20:56:35,310 INFO L136 LiptonReduction]: Total number of compositions: 261 [2023-08-31 20:56:35,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:35,312 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e630238, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:35,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:35,431 INFO L130 PetriNetUnfolder]: 241/984 cut-off events. [2023-08-31 20:56:35,432 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-08-31 20:56:35,432 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:35,432 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:56:35,432 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:35,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:35,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1762086704, now seen corresponding path program 1 times [2023-08-31 20:56:35,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:35,432 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177052390] [2023-08-31 20:56:35,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:35,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:35,467 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:35,504 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:35,504 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:35,504 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:35,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:56:35,505 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:35,505 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:35,505 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:35,505 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:56:35,540 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:56:35,544 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 526 places, 587 transitions, 1372 flow [2023-08-31 20:56:50,688 INFO L130 PetriNetUnfolder]: 11414/51109 cut-off events. [2023-08-31 20:56:50,688 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:56:53,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62473 conditions, 51109 events. 11414/51109 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 646638 event pairs, 7181 based on Foata normal form. 0/44759 useless extension candidates. Maximal degree in co-relation 30614. Up to 11264 conditions per place. [2023-08-31 20:56:53,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 526 places, 587 transitions, 1372 flow [2023-08-31 20:56:53,724 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 526 places, 587 transitions, 1372 flow [2023-08-31 20:56:53,724 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:56:53,724 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 526 places, 587 transitions, 1372 flow [2023-08-31 20:56:53,724 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 526 places, 587 transitions, 1372 flow [2023-08-31 20:56:53,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 526 places, 587 transitions, 1372 flow [2023-08-31 20:57:09,009 INFO L130 PetriNetUnfolder]: 11414/51109 cut-off events. [2023-08-31 20:57:09,009 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:57:10,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62473 conditions, 51109 events. 11414/51109 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 646638 event pairs, 7181 based on Foata normal form. 0/44759 useless extension candidates. Maximal degree in co-relation 30614. Up to 11264 conditions per place. [2023-08-31 20:57:14,392 INFO L119 LiptonReduction]: Number of co-enabled transitions 280720 [2023-08-31 20:57:17,351 INFO L134 LiptonReduction]: Checked pairs total: 1074048 [2023-08-31 20:57:17,351 INFO L136 LiptonReduction]: Total number of compositions: 281 [2023-08-31 20:57:17,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:57:17,353 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e630238, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:57:17,353 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:57:17,501 INFO L130 PetriNetUnfolder]: 368/1365 cut-off events. [2023-08-31 20:57:17,501 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-08-31 20:57:17,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:57:17,501 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:57:17,502 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:57:17,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:57:17,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1831888927, now seen corresponding path program 1 times [2023-08-31 20:57:17,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:57:17,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172098517] [2023-08-31 20:57:17,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:57:17,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:57:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:57:17,555 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:57:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:57:17,579 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:57:17,579 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:57:17,580 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:57:17,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:57:17,580 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:57:17,581 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:57:17,581 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:57:17,581 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:57:17,622 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:57:17,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 567 places, 633 transitions, 1494 flow [2023-08-31 20:57:54,087 INFO L130 PetriNetUnfolder]: 24739/103413 cut-off events. [2023-08-31 20:57:54,088 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:58:01,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128104 conditions, 103413 events. 24739/103413 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 1432110 event pairs, 16398 based on Foata normal form. 0/90901 useless extension candidates. Maximal degree in co-relation 62452. Up to 24576 conditions per place. [2023-08-31 20:58:01,830 INFO L82 GeneralOperation]: Start removeDead. Operand has 567 places, 633 transitions, 1494 flow [2023-08-31 20:58:03,881 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 567 places, 633 transitions, 1494 flow [2023-08-31 20:58:03,882 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:03,882 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 567 places, 633 transitions, 1494 flow [2023-08-31 20:58:03,882 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 567 places, 633 transitions, 1494 flow [2023-08-31 20:58:03,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 567 places, 633 transitions, 1494 flow [2023-08-31 20:58:36,942 INFO L130 PetriNetUnfolder]: 24739/103413 cut-off events. [2023-08-31 20:58:36,942 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:58:45,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128104 conditions, 103413 events. 24739/103413 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 1432110 event pairs, 16398 based on Foata normal form. 0/90901 useless extension candidates. Maximal degree in co-relation 62452. Up to 24576 conditions per place. [2023-08-31 20:58:58,330 INFO L119 LiptonReduction]: Number of co-enabled transitions 331056 [2023-08-31 20:59:01,590 INFO L134 LiptonReduction]: Checked pairs total: 1469776 [2023-08-31 20:59:01,590 INFO L136 LiptonReduction]: Total number of compositions: 301 [2023-08-31 20:59:01,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:59:01,591 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1e630238, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:59:01,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:59:01,829 INFO L130 PetriNetUnfolder]: 581/1948 cut-off events. [2023-08-31 20:59:01,829 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-08-31 20:59:01,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:59:01,829 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:59:01,829 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:59:01,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:59:01,829 INFO L85 PathProgramCache]: Analyzing trace with hash -1330856533, now seen corresponding path program 1 times [2023-08-31 20:59:01,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:59:01,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837232249] [2023-08-31 20:59:01,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:59:01,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:59:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:59:01,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:59:01,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:59:01,874 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:59:01,874 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:59:01,874 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:59:01,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 20:59:01,875 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:59:01,875 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:59:01,875 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:59:01,876 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 20:59:01,914 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 20:59:01,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 608 places, 679 transitions, 1618 flow [2023-08-31 21:00:22,358 INFO L130 PetriNetUnfolder]: 53424/209989 cut-off events. [2023-08-31 21:00:22,358 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-08-31 21:00:43,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263368 conditions, 209989 events. 53424/209989 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2518. Compared 3169088 event pairs, 36879 based on Foata normal form. 0/185171 useless extension candidates. Maximal degree in co-relation 128083. Up to 53248 conditions per place. [2023-08-31 21:00:43,030 INFO L82 GeneralOperation]: Start removeDead. Operand has 608 places, 679 transitions, 1618 flow [2023-08-31 21:00:50,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 608 places, 679 transitions, 1618 flow [2023-08-31 21:00:50,672 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:00:50,673 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 608 places, 679 transitions, 1618 flow [2023-08-31 21:00:50,673 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 608 places, 679 transitions, 1618 flow [2023-08-31 21:00:50,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 608 places, 679 transitions, 1618 flow