./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_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_36-indirect_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 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 --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 20:52:59,374 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:52:59,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:52:59,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:52:59,417 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:52:59,418 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:52:59,422 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:52:59,424 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:52:59,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:52:59,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:52:59,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:52:59,439 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:52:59,439 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:52:59,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:52:59,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:52:59,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:52:59,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:52:59,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:52:59,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:52:59,445 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:52:59,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:52:59,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:52:59,447 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:52:59,448 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:52:59,450 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:52:59,450 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:52:59,450 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:52:59,451 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:52:59,451 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:52:59,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:52:59,454 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:52:59,455 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:52:59,455 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:52:59,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:52:59,456 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:52:59,456 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:52:59,457 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:52:59,457 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:52:59,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:52:59,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:52:59,458 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:52:59,473 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:52:59,487 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:52:59,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:52:59,488 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:52:59,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:52:59,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:52:59,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:52:59,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:52:59,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:52:59,489 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:52:59,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:52:59,489 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:52:59,489 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:52:59,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:52:59,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:52:59,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:52:59,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:52:59,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:52:59,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:52:59,490 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:52:59,491 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:52:59,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:52:59,491 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:52:59,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:52:59,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:52:59,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:52:59,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:52:59,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:52:59,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:52:59,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:52:59,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:52:59,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:52:59,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:52:59,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:52:59,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:52:59,493 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:52:59,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:52:59,493 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:52:59,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3eff698bae51c39e8a3a4c763800dbda831dabb73a169fa31c8e326faee47cd8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:52:59,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:52:59,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:52:59,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:52:59,755 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:52:59,756 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:52:59,757 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-08-31 20:53:00,865 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:53:01,112 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:53:01,113 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_36-indirect_racefree.i [2023-08-31 20:53:01,121 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/318e3e72f/05e0357a446b4cfe9e113f7b56366a2c/FLAG87e1215c3 [2023-08-31 20:53:01,130 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/318e3e72f/05e0357a446b4cfe9e113f7b56366a2c [2023-08-31 20:53:01,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:53:01,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:53:01,133 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:53:01,133 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:53:01,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:53:01,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:53:01" (1/1) ... [2023-08-31 20:53:01,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@631da0f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:53:01, skipping insertion in model container [2023-08-31 20:53:01,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:53:01" (1/1) ... [2023-08-31 20:53:01,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:53:01,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:53:01,354 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_36-indirect_racefree.i[30176,30189] [2023-08-31 20:53:01,388 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:53:01,398 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:53:01,444 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_36-indirect_racefree.i[30176,30189] [2023-08-31 20:53:01,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:53:01,487 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:53:01,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:53:01 WrapperNode [2023-08-31 20:53:01,488 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:53:01,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:53:01,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:53:01,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:53:01,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:53:01" (1/1) ... [2023-08-31 20:53:01,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:53:01" (1/1) ... [2023-08-31 20:53:01,532 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 102 [2023-08-31 20:53:01,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:53:01,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:53:01,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:53:01,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:53:01,539 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:53:01" (1/1) ... [2023-08-31 20:53:01,539 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:53:01" (1/1) ... [2023-08-31 20:53:01,541 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:53:01" (1/1) ... [2023-08-31 20:53:01,541 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:53:01" (1/1) ... [2023-08-31 20:53:01,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:53:01" (1/1) ... [2023-08-31 20:53:01,551 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:53:01" (1/1) ... [2023-08-31 20:53:01,553 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:53:01" (1/1) ... [2023-08-31 20:53:01,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:53:01" (1/1) ... [2023-08-31 20:53:01,555 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:53:01,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:53:01,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:53:01,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:53:01,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:53:01" (1/1) ... [2023-08-31 20:53:01,561 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:53:01,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:53:01,590 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 20:53:01,593 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 20:53:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:53:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:53:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:53:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:53:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:53:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:53:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:53:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:53:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:53:01,618 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:53:01,618 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:53:01,619 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 20:53:01,787 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:53:01,790 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:53:02,040 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:53:02,054 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:53:02,055 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-31 20:53:02,056 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:53:02 BoogieIcfgContainer [2023-08-31 20:53:02,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:53:02,058 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:53:02,058 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:53:02,063 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:53:02,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:53:01" (1/3) ... [2023-08-31 20:53:02,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e858391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:53:02, skipping insertion in model container [2023-08-31 20:53:02,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:53:01" (2/3) ... [2023-08-31 20:53:02,064 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e858391 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:53:02, skipping insertion in model container [2023-08-31 20:53:02,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:53:02" (3/3) ... [2023-08-31 20:53:02,065 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_36-indirect_racefree.i [2023-08-31 20:53:02,071 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:53:02,077 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:53:02,078 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-08-31 20:53:02,078 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:53:02,135 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:53:02,164 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 172 transitions, 352 flow [2023-08-31 20:53:02,266 INFO L130 PetriNetUnfolder]: 17/221 cut-off events. [2023-08-31 20:53:02,267 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:53:02,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 221 events. 17/221 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 651 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 120. Up to 4 conditions per place. [2023-08-31 20:53:02,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 172 transitions, 352 flow [2023-08-31 20:53:02,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 164 transitions, 333 flow [2023-08-31 20:53:02,280 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:53:02,298 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 164 transitions, 333 flow [2023-08-31 20:53:02,301 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 164 transitions, 333 flow [2023-08-31 20:53:02,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 164 transitions, 333 flow [2023-08-31 20:53:02,340 INFO L130 PetriNetUnfolder]: 16/213 cut-off events. [2023-08-31 20:53:02,340 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:53:02,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218 conditions, 213 events. 16/213 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 613 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 120. Up to 4 conditions per place. [2023-08-31 20:53:02,345 INFO L119 LiptonReduction]: Number of co-enabled transitions 7260 [2023-08-31 20:53:04,836 INFO L134 LiptonReduction]: Checked pairs total: 27473 [2023-08-31 20:53:04,836 INFO L136 LiptonReduction]: Total number of compositions: 112 [2023-08-31 20:53:04,851 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:53:04,855 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;@362be606, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:53:04,855 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:53:04,858 INFO L130 PetriNetUnfolder]: 0/26 cut-off events. [2023-08-31 20:53:04,858 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:53:04,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:53:04,859 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:53:04,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:53:04,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:53:04,886 INFO L85 PathProgramCache]: Analyzing trace with hash 711074447, now seen corresponding path program 1 times [2023-08-31 20:53:04,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:53:04,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356040302] [2023-08-31 20:53:04,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:53:04,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:53:05,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:05,028 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:53:05,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:05,080 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:53:05,081 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:53:05,082 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:53:05,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:53:05,083 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:53:05,090 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:53:05,090 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:53:05,091 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:53:05,124 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:53:05,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 226 places, 240 transitions, 498 flow [2023-08-31 20:53:05,157 INFO L130 PetriNetUnfolder]: 31/368 cut-off events. [2023-08-31 20:53:05,157 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:53:05,160 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 368 events. 31/368 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1395 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 223. Up to 8 conditions per place. [2023-08-31 20:53:05,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 226 places, 240 transitions, 498 flow [2023-08-31 20:53:05,162 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 237 transitions, 492 flow [2023-08-31 20:53:05,162 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:53:05,162 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 237 transitions, 492 flow [2023-08-31 20:53:05,163 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 237 transitions, 492 flow [2023-08-31 20:53:05,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 237 transitions, 492 flow [2023-08-31 20:53:05,192 INFO L130 PetriNetUnfolder]: 31/365 cut-off events. [2023-08-31 20:53:05,192 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:53:05,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 365 events. 31/365 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1388 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 220. Up to 8 conditions per place. [2023-08-31 20:53:05,203 INFO L119 LiptonReduction]: Number of co-enabled transitions 24684 [2023-08-31 20:53:07,576 INFO L134 LiptonReduction]: Checked pairs total: 141573 [2023-08-31 20:53:07,576 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-31 20:53:07,578 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:53:07,579 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;@362be606, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:53:07,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:53:07,587 INFO L130 PetriNetUnfolder]: 4/72 cut-off events. [2023-08-31 20:53:07,587 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 20:53:07,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:53:07,588 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:53:07,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:53:07,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:53:07,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1968456274, now seen corresponding path program 1 times [2023-08-31 20:53:07,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:53:07,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141637158] [2023-08-31 20:53:07,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:53:07,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:53:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:07,623 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:53:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:07,639 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:53:07,639 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:53:07,639 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:53:07,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:53:07,640 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:53:07,640 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:53:07,640 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:53:07,640 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:53:07,660 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:53:07,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 308 transitions, 646 flow [2023-08-31 20:53:07,717 INFO L130 PetriNetUnfolder]: 50/558 cut-off events. [2023-08-31 20:53:07,717 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:53:07,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 586 conditions, 558 events. 50/558 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2421 event pairs, 1 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 376. Up to 16 conditions per place. [2023-08-31 20:53:07,725 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 308 transitions, 646 flow [2023-08-31 20:53:07,728 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 286 places, 305 transitions, 640 flow [2023-08-31 20:53:07,728 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:53:07,728 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 286 places, 305 transitions, 640 flow [2023-08-31 20:53:07,729 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 286 places, 305 transitions, 640 flow [2023-08-31 20:53:07,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 286 places, 305 transitions, 640 flow [2023-08-31 20:53:07,794 INFO L130 PetriNetUnfolder]: 50/555 cut-off events. [2023-08-31 20:53:07,795 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:53:07,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 555 events. 50/555 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2419 event pairs, 1 based on Foata normal form. 0/467 useless extension candidates. Maximal degree in co-relation 373. Up to 16 conditions per place. [2023-08-31 20:53:07,816 INFO L119 LiptonReduction]: Number of co-enabled transitions 50688 [2023-08-31 20:53:10,477 INFO L134 LiptonReduction]: Checked pairs total: 312113 [2023-08-31 20:53:10,477 INFO L136 LiptonReduction]: Total number of compositions: 152 [2023-08-31 20:53:10,478 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:53:10,479 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;@362be606, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:53:10,479 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:53:10,494 INFO L130 PetriNetUnfolder]: 8/125 cut-off events. [2023-08-31 20:53:10,494 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 20:53:10,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:53:10,495 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:53:10,495 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:53:10,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:53:10,495 INFO L85 PathProgramCache]: Analyzing trace with hash 456035021, now seen corresponding path program 1 times [2023-08-31 20:53:10,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:53:10,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189203143] [2023-08-31 20:53:10,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:53:10,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:53:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:10,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:53:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:10,572 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:53:10,575 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:53:10,576 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:53:10,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:53:10,576 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:53:10,577 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:53:10,577 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:53:10,577 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:53:10,609 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:53:10,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 352 places, 376 transitions, 796 flow [2023-08-31 20:53:10,736 INFO L130 PetriNetUnfolder]: 81/836 cut-off events. [2023-08-31 20:53:10,737 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:53:10,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 836 events. 81/836 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3941 event pairs, 6 based on Foata normal form. 0/702 useless extension candidates. Maximal degree in co-relation 578. Up to 32 conditions per place. [2023-08-31 20:53:10,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 352 places, 376 transitions, 796 flow [2023-08-31 20:53:10,751 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 373 transitions, 790 flow [2023-08-31 20:53:10,752 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:53:10,752 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 373 transitions, 790 flow [2023-08-31 20:53:10,752 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 373 transitions, 790 flow [2023-08-31 20:53:10,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 373 transitions, 790 flow [2023-08-31 20:53:10,864 INFO L130 PetriNetUnfolder]: 81/833 cut-off events. [2023-08-31 20:53:10,865 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:53:10,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888 conditions, 833 events. 81/833 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 3938 event pairs, 6 based on Foata normal form. 0/702 useless extension candidates. Maximal degree in co-relation 575. Up to 32 conditions per place. [2023-08-31 20:53:10,899 INFO L119 LiptonReduction]: Number of co-enabled transitions 85800 [2023-08-31 20:53:13,112 INFO L134 LiptonReduction]: Checked pairs total: 554076 [2023-08-31 20:53:13,113 INFO L136 LiptonReduction]: Total number of compositions: 176 [2023-08-31 20:53:13,114 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:53:13,115 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;@362be606, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:53:13,115 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:53:13,159 INFO L130 PetriNetUnfolder]: 13/190 cut-off events. [2023-08-31 20:53:13,159 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:53:13,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:53:13,159 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:53:13,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:53:13,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:53:13,160 INFO L85 PathProgramCache]: Analyzing trace with hash 12152885, now seen corresponding path program 1 times [2023-08-31 20:53:13,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:53:13,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820688549] [2023-08-31 20:53:13,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:53:13,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:53:13,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:13,208 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:53:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:13,252 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:53:13,255 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:53:13,255 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:53:13,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:53:13,255 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:53:13,256 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:53:13,256 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:53:13,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:53:13,310 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:53:13,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 444 transitions, 948 flow [2023-08-31 20:53:13,554 INFO L130 PetriNetUnfolder]: 140/1294 cut-off events. [2023-08-31 20:53:13,554 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:53:13,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1405 conditions, 1294 events. 140/1294 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6907 event pairs, 23 based on Foata normal form. 0/1093 useless extension candidates. Maximal degree in co-relation 881. Up to 80 conditions per place. [2023-08-31 20:53:13,570 INFO L82 GeneralOperation]: Start removeDead. Operand has 415 places, 444 transitions, 948 flow [2023-08-31 20:53:13,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 412 places, 441 transitions, 942 flow [2023-08-31 20:53:13,579 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:53:13,579 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 412 places, 441 transitions, 942 flow [2023-08-31 20:53:13,580 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 412 places, 441 transitions, 942 flow [2023-08-31 20:53:13,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 412 places, 441 transitions, 942 flow [2023-08-31 20:53:13,805 INFO L130 PetriNetUnfolder]: 140/1291 cut-off events. [2023-08-31 20:53:13,806 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:53:13,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1402 conditions, 1291 events. 140/1291 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 6873 event pairs, 23 based on Foata normal form. 0/1093 useless extension candidates. Maximal degree in co-relation 878. Up to 80 conditions per place. [2023-08-31 20:53:13,860 INFO L119 LiptonReduction]: Number of co-enabled transitions 130020 [2023-08-31 20:53:16,384 INFO L134 LiptonReduction]: Checked pairs total: 751474 [2023-08-31 20:53:16,385 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-08-31 20:53:16,386 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:53:16,387 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;@362be606, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:53:16,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:53:16,404 INFO L130 PetriNetUnfolder]: 26/275 cut-off events. [2023-08-31 20:53:16,405 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-08-31 20:53:16,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:53:16,405 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:53:16,405 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:53:16,406 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:53:16,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1119754330, now seen corresponding path program 1 times [2023-08-31 20:53:16,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:53:16,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556259065] [2023-08-31 20:53:16,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:53:16,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:53:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:16,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:53:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:16,433 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:53:16,433 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:53:16,434 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:53:16,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:53:16,434 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:53:16,434 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:53:16,434 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:53:16,435 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:53:16,457 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:53:16,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 478 places, 512 transitions, 1102 flow [2023-08-31 20:53:16,885 INFO L130 PetriNetUnfolder]: 263/2120 cut-off events. [2023-08-31 20:53:16,885 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:53:16,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2352 conditions, 2120 events. 263/2120 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 13207 event pairs, 72 based on Foata normal form. 0/1804 useless extension candidates. Maximal degree in co-relation 1393. Up to 192 conditions per place. [2023-08-31 20:53:16,934 INFO L82 GeneralOperation]: Start removeDead. Operand has 478 places, 512 transitions, 1102 flow [2023-08-31 20:53:16,945 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 475 places, 509 transitions, 1096 flow [2023-08-31 20:53:16,960 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:53:16,961 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 475 places, 509 transitions, 1096 flow [2023-08-31 20:53:16,961 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 475 places, 509 transitions, 1096 flow [2023-08-31 20:53:16,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 475 places, 509 transitions, 1096 flow [2023-08-31 20:53:17,476 INFO L130 PetriNetUnfolder]: 263/2117 cut-off events. [2023-08-31 20:53:17,476 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:53:17,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 2117 events. 263/2117 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 13234 event pairs, 72 based on Foata normal form. 0/1804 useless extension candidates. Maximal degree in co-relation 1390. Up to 192 conditions per place. [2023-08-31 20:53:17,608 INFO L119 LiptonReduction]: Number of co-enabled transitions 183348 [2023-08-31 20:53:19,923 INFO L134 LiptonReduction]: Checked pairs total: 1218557 [2023-08-31 20:53:19,925 INFO L136 LiptonReduction]: Total number of compositions: 222 [2023-08-31 20:53:19,927 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:53:19,927 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;@362be606, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:53:19,927 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:53:19,972 INFO L130 PetriNetUnfolder]: 31/361 cut-off events. [2023-08-31 20:53:19,972 INFO L131 PetriNetUnfolder]: For 60/60 co-relation queries the response was YES. [2023-08-31 20:53:19,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:53:19,972 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:53:19,972 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:53:19,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:53:19,973 INFO L85 PathProgramCache]: Analyzing trace with hash -408480867, now seen corresponding path program 1 times [2023-08-31 20:53:19,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:53:19,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393432561] [2023-08-31 20:53:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:53:19,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:53:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:20,003 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:53:20,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:20,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:53:20,015 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:53:20,015 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:53:20,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:53:20,016 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:53:20,016 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:53:20,016 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:53:20,016 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:53:20,046 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:53:20,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 541 places, 580 transitions, 1258 flow [2023-08-31 20:53:20,959 INFO L130 PetriNetUnfolder]: 530/3698 cut-off events. [2023-08-31 20:53:20,960 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:53:21,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4196 conditions, 3698 events. 530/3698 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 27014 event pairs, 201 based on Foata normal form. 0/3171 useless extension candidates. Maximal degree in co-relation 2338. Up to 448 conditions per place. [2023-08-31 20:53:21,017 INFO L82 GeneralOperation]: Start removeDead. Operand has 541 places, 580 transitions, 1258 flow [2023-08-31 20:53:21,051 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 538 places, 577 transitions, 1252 flow [2023-08-31 20:53:21,051 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:53:21,051 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 538 places, 577 transitions, 1252 flow [2023-08-31 20:53:21,051 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 538 places, 577 transitions, 1252 flow [2023-08-31 20:53:21,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 538 places, 577 transitions, 1252 flow [2023-08-31 20:53:21,942 INFO L130 PetriNetUnfolder]: 530/3695 cut-off events. [2023-08-31 20:53:21,942 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:53:22,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4193 conditions, 3695 events. 530/3695 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 27031 event pairs, 201 based on Foata normal form. 0/3171 useless extension candidates. Maximal degree in co-relation 2335. Up to 448 conditions per place. [2023-08-31 20:53:22,218 INFO L119 LiptonReduction]: Number of co-enabled transitions 245784 [2023-08-31 20:53:25,150 INFO L134 LiptonReduction]: Checked pairs total: 1655738 [2023-08-31 20:53:25,150 INFO L136 LiptonReduction]: Total number of compositions: 248 [2023-08-31 20:53:25,158 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:53:25,158 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;@362be606, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:53:25,158 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:53:25,198 INFO L130 PetriNetUnfolder]: 41/463 cut-off events. [2023-08-31 20:53:25,198 INFO L131 PetriNetUnfolder]: For 93/93 co-relation queries the response was YES. [2023-08-31 20:53:25,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:53:25,198 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:53:25,198 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:53:25,199 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:53:25,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1813628821, now seen corresponding path program 1 times [2023-08-31 20:53:25,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:53:25,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595513675] [2023-08-31 20:53:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:53:25,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:53:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:25,258 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:53:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:25,281 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:53:25,284 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:53:25,284 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:53:25,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:53:25,284 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:53:25,285 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:53:25,285 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:53:25,285 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:53:25,326 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:53:25,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 604 places, 648 transitions, 1416 flow [2023-08-31 20:53:27,261 INFO L130 PetriNetUnfolder]: 1117/6812 cut-off events. [2023-08-31 20:53:27,262 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:53:27,376 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7897 conditions, 6812 events. 1117/6812 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 58449 event pairs, 522 based on Foata normal form. 0/5882 useless extension candidates. Maximal degree in co-relation 4180. Up to 1024 conditions per place. [2023-08-31 20:53:27,376 INFO L82 GeneralOperation]: Start removeDead. Operand has 604 places, 648 transitions, 1416 flow [2023-08-31 20:53:27,510 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 601 places, 645 transitions, 1410 flow [2023-08-31 20:53:27,511 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:53:27,511 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 601 places, 645 transitions, 1410 flow [2023-08-31 20:53:27,511 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 601 places, 645 transitions, 1410 flow [2023-08-31 20:53:27,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 601 places, 645 transitions, 1410 flow [2023-08-31 20:53:29,211 INFO L130 PetriNetUnfolder]: 1117/6809 cut-off events. [2023-08-31 20:53:29,211 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:53:29,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7894 conditions, 6809 events. 1117/6809 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 58481 event pairs, 522 based on Foata normal form. 0/5882 useless extension candidates. Maximal degree in co-relation 4177. Up to 1024 conditions per place. [2023-08-31 20:53:29,717 INFO L119 LiptonReduction]: Number of co-enabled transitions 317328 [2023-08-31 20:53:33,082 INFO L134 LiptonReduction]: Checked pairs total: 2164839 [2023-08-31 20:53:33,082 INFO L136 LiptonReduction]: Total number of compositions: 273 [2023-08-31 20:53:33,083 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:53:33,083 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;@362be606, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:53:33,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:53:33,201 INFO L130 PetriNetUnfolder]: 60/586 cut-off events. [2023-08-31 20:53:33,202 INFO L131 PetriNetUnfolder]: For 138/138 co-relation queries the response was YES. [2023-08-31 20:53:33,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:53:33,202 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:53:33,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:53:33,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:53:33,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1022951697, now seen corresponding path program 1 times [2023-08-31 20:53:33,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:53:33,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549854050] [2023-08-31 20:53:33,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:53:33,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:53:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:33,217 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:53:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:33,229 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:53:33,231 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:53:33,231 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:53:33,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:53:33,231 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:53:33,233 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:53:33,233 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:53:33,236 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:53:33,271 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:53:33,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 667 places, 716 transitions, 1576 flow [2023-08-31 20:53:37,152 INFO L130 PetriNetUnfolder]: 2408/13062 cut-off events. [2023-08-31 20:53:37,152 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:53:37,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15439 conditions, 13062 events. 2408/13062 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 130318 event pairs, 1291 based on Foata normal form. 0/11345 useless extension candidates. Maximal degree in co-relation 7879. Up to 2304 conditions per place. [2023-08-31 20:53:37,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 667 places, 716 transitions, 1576 flow [2023-08-31 20:53:37,512 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 664 places, 713 transitions, 1570 flow [2023-08-31 20:53:37,512 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:53:37,512 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 664 places, 713 transitions, 1570 flow [2023-08-31 20:53:37,513 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 664 places, 713 transitions, 1570 flow [2023-08-31 20:53:37,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 664 places, 713 transitions, 1570 flow [2023-08-31 20:53:41,319 INFO L130 PetriNetUnfolder]: 2408/13059 cut-off events. [2023-08-31 20:53:41,319 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:53:41,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15436 conditions, 13059 events. 2408/13059 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 130183 event pairs, 1291 based on Foata normal form. 0/11345 useless extension candidates. Maximal degree in co-relation 7876. Up to 2304 conditions per place. [2023-08-31 20:53:42,588 INFO L119 LiptonReduction]: Number of co-enabled transitions 397980 [2023-08-31 20:53:45,779 INFO L134 LiptonReduction]: Checked pairs total: 2754520 [2023-08-31 20:53:45,779 INFO L136 LiptonReduction]: Total number of compositions: 296 [2023-08-31 20:53:45,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:53:45,781 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;@362be606, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:53:45,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:53:45,859 INFO L130 PetriNetUnfolder]: 76/724 cut-off events. [2023-08-31 20:53:45,859 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2023-08-31 20:53:45,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:53:45,859 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:53:45,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:53:45,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:53:45,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1341308315, now seen corresponding path program 1 times [2023-08-31 20:53:45,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:53:45,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900549100] [2023-08-31 20:53:45,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:53:45,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:53:45,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:45,873 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:53:45,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:53:45,885 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:53:45,885 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:53:45,885 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:53:45,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:53:45,885 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:53:45,886 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:53:45,886 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:53:45,886 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:53:45,919 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:53:45,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 730 places, 784 transitions, 1738 flow [2023-08-31 20:53:54,440 INFO L130 PetriNetUnfolder]: 5235/25712 cut-off events. [2023-08-31 20:53:54,440 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:53:55,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30918 conditions, 25712 events. 5235/25712 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 290200 event pairs, 3084 based on Foata normal form. 0/22440 useless extension candidates. Maximal degree in co-relation 15419. Up to 5120 conditions per place. [2023-08-31 20:53:55,038 INFO L82 GeneralOperation]: Start removeDead. Operand has 730 places, 784 transitions, 1738 flow [2023-08-31 20:53:55,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 727 places, 781 transitions, 1732 flow [2023-08-31 20:53:55,518 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:53:55,518 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 727 places, 781 transitions, 1732 flow [2023-08-31 20:53:55,518 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 727 places, 781 transitions, 1732 flow [2023-08-31 20:53:55,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 727 places, 781 transitions, 1732 flow [2023-08-31 20:54:04,012 INFO L130 PetriNetUnfolder]: 5235/25709 cut-off events. [2023-08-31 20:54:04,012 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:54:04,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30915 conditions, 25709 events. 5235/25709 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 289965 event pairs, 3084 based on Foata normal form. 0/22440 useless extension candidates. Maximal degree in co-relation 15416. Up to 5120 conditions per place. [2023-08-31 20:54:06,811 INFO L119 LiptonReduction]: Number of co-enabled transitions 487740 [2023-08-31 20:54:10,402 INFO L134 LiptonReduction]: Checked pairs total: 3367384 [2023-08-31 20:54:10,402 INFO L136 LiptonReduction]: Total number of compositions: 319 [2023-08-31 20:54:10,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:54:10,404 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;@362be606, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:54:10,404 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:54:10,520 INFO L130 PetriNetUnfolder]: 97/896 cut-off events. [2023-08-31 20:54:10,520 INFO L131 PetriNetUnfolder]: For 277/277 co-relation queries the response was YES. [2023-08-31 20:54:10,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:54:10,521 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:54:10,521 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:54:10,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:54:10,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1841758563, now seen corresponding path program 1 times [2023-08-31 20:54:10,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:54:10,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60812708] [2023-08-31 20:54:10,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:54:10,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:54:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:10,538 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:54:10,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:54:10,553 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:54:10,553 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:54:10,553 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:54:10,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:54:10,554 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:54:10,554 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:54:10,554 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:54:10,554 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:54:10,588 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:54:10,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 793 places, 852 transitions, 1902 flow [2023-08-31 20:54:30,236 INFO L130 PetriNetUnfolder]: 11390/51418 cut-off events. [2023-08-31 20:54:30,237 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:54:33,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62782 conditions, 51418 events. 11390/51418 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 647695 event pairs, 7181 based on Foata normal form. 0/45055 useless extension candidates. Maximal degree in co-relation 30896. Up to 11264 conditions per place. [2023-08-31 20:54:33,232 INFO L82 GeneralOperation]: Start removeDead. Operand has 793 places, 852 transitions, 1902 flow [2023-08-31 20:54:34,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 790 places, 849 transitions, 1896 flow [2023-08-31 20:54:34,317 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:54:34,317 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 790 places, 849 transitions, 1896 flow [2023-08-31 20:54:34,318 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 790 places, 849 transitions, 1896 flow [2023-08-31 20:54:34,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 790 places, 849 transitions, 1896 flow [2023-08-31 20:54:54,004 INFO L130 PetriNetUnfolder]: 11390/51415 cut-off events. [2023-08-31 20:54:54,004 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:54:55,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62779 conditions, 51415 events. 11390/51415 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 647696 event pairs, 7181 based on Foata normal form. 0/45055 useless extension candidates. Maximal degree in co-relation 30893. Up to 11264 conditions per place. [2023-08-31 20:55:00,344 INFO L119 LiptonReduction]: Number of co-enabled transitions 586608 [2023-08-31 20:55:04,465 INFO L134 LiptonReduction]: Checked pairs total: 4060100 [2023-08-31 20:55:04,465 INFO L136 LiptonReduction]: Total number of compositions: 343 [2023-08-31 20:55:04,467 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:55:04,467 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;@362be606, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:55:04,467 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:55:04,667 INFO L130 PetriNetUnfolder]: 127/1112 cut-off events. [2023-08-31 20:55:04,667 INFO L131 PetriNetUnfolder]: For 382/382 co-relation queries the response was YES. [2023-08-31 20:55:04,667 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:55:04,667 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:55:04,668 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:55:04,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:55:04,668 INFO L85 PathProgramCache]: Analyzing trace with hash 36347117, now seen corresponding path program 1 times [2023-08-31 20:55:04,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:55:04,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492508580] [2023-08-31 20:55:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:55:04,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:55:04,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:04,685 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:55:04,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:55:04,699 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:55:04,699 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:55:04,700 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:55:04,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:55:04,700 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:55:04,700 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:55:04,700 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:55:04,701 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:55:04,739 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:55:04,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 856 places, 920 transitions, 2068 flow [2023-08-31 20:55:45,630 INFO L130 PetriNetUnfolder]: 24713/103748 cut-off events. [2023-08-31 20:55:45,630 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:55:52,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128439 conditions, 103748 events. 24713/103748 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 1429525 event pairs, 16398 based on Foata normal form. 0/91222 useless extension candidates. Maximal degree in co-relation 62758. Up to 24576 conditions per place. [2023-08-31 20:55:52,131 INFO L82 GeneralOperation]: Start removeDead. Operand has 856 places, 920 transitions, 2068 flow [2023-08-31 20:55:54,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 853 places, 917 transitions, 2062 flow [2023-08-31 20:55:54,046 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:55:54,047 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 853 places, 917 transitions, 2062 flow [2023-08-31 20:55:54,047 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 853 places, 917 transitions, 2062 flow [2023-08-31 20:55:54,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 853 places, 917 transitions, 2062 flow [2023-08-31 20:56:34,957 INFO L130 PetriNetUnfolder]: 24713/103745 cut-off events. [2023-08-31 20:56:34,958 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:56:41,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128436 conditions, 103745 events. 24713/103745 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 1429626 event pairs, 16398 based on Foata normal form. 0/91222 useless extension candidates. Maximal degree in co-relation 62755. Up to 24576 conditions per place. [2023-08-31 20:56:53,938 INFO L119 LiptonReduction]: Number of co-enabled transitions 694584 [2023-08-31 20:56:58,579 INFO L134 LiptonReduction]: Checked pairs total: 4832607 [2023-08-31 20:56:58,580 INFO L136 LiptonReduction]: Total number of compositions: 363 [2023-08-31 20:56:58,581 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:58,582 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;@362be606, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:58,582 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:58,798 INFO L130 PetriNetUnfolder]: 161/1395 cut-off events. [2023-08-31 20:56:58,798 INFO L131 PetriNetUnfolder]: For 523/523 co-relation queries the response was YES. [2023-08-31 20:56:58,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:58,799 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 20:56:58,799 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:58,799 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:58,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1909756920, now seen corresponding path program 1 times [2023-08-31 20:56:58,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:58,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226922319] [2023-08-31 20:56:58,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:58,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:58,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:58,815 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:58,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:58,830 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:58,830 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:58,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 20:56:58,830 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:58,831 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:58,831 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:58,831 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 20:56:58,870 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 20:56:58,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 919 places, 988 transitions, 2236 flow