./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_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_05-lockfuns_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 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 --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 20:42:12,651 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:42:12,652 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:42:12,684 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:42:12,685 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:42:12,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:42:12,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:42:12,690 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:42:12,691 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:42:12,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:42:12,696 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:42:12,698 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:42:12,698 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:42:12,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:42:12,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:42:12,704 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:42:12,705 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:42:12,706 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:42:12,707 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:42:12,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:42:12,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:42:12,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:42:12,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:42:12,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:42:12,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:42:12,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:42:12,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:42:12,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:42:12,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:42:12,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:42:12,728 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:42:12,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:42:12,730 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:42:12,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:42:12,732 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:42:12,732 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:42:12,733 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:42:12,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:42:12,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:42:12,734 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:42:12,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:42:12,735 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:42:12,755 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:42:12,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:42:12,756 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:42:12,756 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:42:12,756 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:42:12,756 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:42:12,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:42:12,757 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:42:12,757 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:42:12,757 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:42:12,758 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:42:12,758 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:42:12,758 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:42:12,758 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:42:12,759 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:42:12,759 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:42:12,759 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:42:12,759 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:42:12,759 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:42:12,759 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:42:12,759 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:42:12,760 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:42:12,760 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:42:12,760 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:42:12,760 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:42:12,760 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:42:12,760 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:42:12,760 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:42:12,761 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:42:12,761 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:42:12,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:42:12,761 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:42:12,761 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:42:12,761 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:42:12,762 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:42:12,762 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:42:12,762 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:42:12,762 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1fe12ce8951e45860142b9cebaa325eef531c18fa917882c03ee5396afb187f5 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:42:13,005 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:42:13,024 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:42:13,038 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:42:13,039 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:42:13,039 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:42:13,040 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-08-31 20:42:13,975 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:42:14,198 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:42:14,198 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_05-lockfuns_racefree.i [2023-08-31 20:42:14,219 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a8b4958/94559570eee440d8a173d715bfcc1615/FLAGcf82f4b04 [2023-08-31 20:42:14,241 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0a8b4958/94559570eee440d8a173d715bfcc1615 [2023-08-31 20:42:14,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:42:14,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:42:14,249 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:42:14,249 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:42:14,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:42:14,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:42:14" (1/1) ... [2023-08-31 20:42:14,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@694a374d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:14, skipping insertion in model container [2023-08-31 20:42:14,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:42:14" (1/1) ... [2023-08-31 20:42:14,265 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:42:14,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:42:14,503 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_05-lockfuns_racefree.i[30176,30189] [2023-08-31 20:42:14,521 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:42:14,531 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:42:14,568 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_05-lockfuns_racefree.i[30176,30189] [2023-08-31 20:42:14,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:42:14,614 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:42:14,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:14 WrapperNode [2023-08-31 20:42:14,615 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:42:14,615 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:42:14,615 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:42:14,616 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:42:14,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:14" (1/1) ... [2023-08-31 20:42:14,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:14" (1/1) ... [2023-08-31 20:42:14,641 INFO L138 Inliner]: procedures = 172, calls = 33, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 125 [2023-08-31 20:42:14,641 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:42:14,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:42:14,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:42:14,642 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:42:14,647 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:14" (1/1) ... [2023-08-31 20:42:14,647 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:14" (1/1) ... [2023-08-31 20:42:14,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:14" (1/1) ... [2023-08-31 20:42:14,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:14" (1/1) ... [2023-08-31 20:42:14,653 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:14" (1/1) ... [2023-08-31 20:42:14,655 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:14" (1/1) ... [2023-08-31 20:42:14,656 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:14" (1/1) ... [2023-08-31 20:42:14,657 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:14" (1/1) ... [2023-08-31 20:42:14,659 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:42:14,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:42:14,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:42:14,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:42:14,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:14" (1/1) ... [2023-08-31 20:42:14,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:42:14,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:42:14,694 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 20:42:14,719 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 20:42:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:42:14,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:42:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:42:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:42:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:42:14,731 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:42:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:42:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:42:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:42:14,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:42:14,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:42:14,733 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 20:42:14,851 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:42:14,853 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:42:15,062 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:42:15,067 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:42:15,067 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-31 20:42:15,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:42:15 BoogieIcfgContainer [2023-08-31 20:42:15,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:42:15,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:42:15,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:42:15,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:42:15,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:42:14" (1/3) ... [2023-08-31 20:42:15,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b36f148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:42:15, skipping insertion in model container [2023-08-31 20:42:15,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:42:14" (2/3) ... [2023-08-31 20:42:15,072 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b36f148 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:42:15, skipping insertion in model container [2023-08-31 20:42:15,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:42:15" (3/3) ... [2023-08-31 20:42:15,073 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_05-lockfuns_racefree.i [2023-08-31 20:42:15,081 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:42:15,087 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:42:15,088 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-31 20:42:15,088 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:42:15,160 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:42:15,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 118 places, 127 transitions, 262 flow [2023-08-31 20:42:15,268 INFO L130 PetriNetUnfolder]: 17/170 cut-off events. [2023-08-31 20:42:15,270 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:42:15,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176 conditions, 170 events. 17/170 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 498 event pairs, 0 based on Foata normal form. 0/142 useless extension candidates. Maximal degree in co-relation 94. Up to 4 conditions per place. [2023-08-31 20:42:15,275 INFO L82 GeneralOperation]: Start removeDead. Operand has 118 places, 127 transitions, 262 flow [2023-08-31 20:42:15,284 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 122 transitions, 249 flow [2023-08-31 20:42:15,287 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:15,301 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 122 transitions, 249 flow [2023-08-31 20:42:15,304 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 122 transitions, 249 flow [2023-08-31 20:42:15,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 122 transitions, 249 flow [2023-08-31 20:42:15,339 INFO L130 PetriNetUnfolder]: 16/165 cut-off events. [2023-08-31 20:42:15,339 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:42:15,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 170 conditions, 165 events. 16/165 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 498 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 94. Up to 4 conditions per place. [2023-08-31 20:42:15,344 INFO L119 LiptonReduction]: Number of co-enabled transitions 4508 [2023-08-31 20:42:17,141 INFO L134 LiptonReduction]: Checked pairs total: 10278 [2023-08-31 20:42:17,142 INFO L136 LiptonReduction]: Total number of compositions: 89 [2023-08-31 20:42:17,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:17,155 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;@14e65cc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:17,155 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:17,158 INFO L130 PetriNetUnfolder]: 0/18 cut-off events. [2023-08-31 20:42:17,158 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:42:17,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:17,159 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:42:17,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:17,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:17,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1204320181, now seen corresponding path program 1 times [2023-08-31 20:42:17,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:17,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712940219] [2023-08-31 20:42:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:17,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:17,235 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:17,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:17,259 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:17,260 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:17,261 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:17,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:42:17,262 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:17,264 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:17,264 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:17,264 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:42:17,278 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:42:17,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 175 transitions, 368 flow [2023-08-31 20:42:17,308 INFO L130 PetriNetUnfolder]: 31/291 cut-off events. [2023-08-31 20:42:17,308 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:42:17,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 291 events. 31/291 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1018 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2023-08-31 20:42:17,310 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 175 transitions, 368 flow [2023-08-31 20:42:17,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 175 transitions, 368 flow [2023-08-31 20:42:17,312 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:17,312 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 175 transitions, 368 flow [2023-08-31 20:42:17,312 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 175 transitions, 368 flow [2023-08-31 20:42:17,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 175 transitions, 368 flow [2023-08-31 20:42:17,339 INFO L130 PetriNetUnfolder]: 31/291 cut-off events. [2023-08-31 20:42:17,339 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:42:17,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 305 conditions, 291 events. 31/291 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1018 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 172. Up to 8 conditions per place. [2023-08-31 20:42:17,347 INFO L119 LiptonReduction]: Number of co-enabled transitions 14260 [2023-08-31 20:42:18,928 INFO L134 LiptonReduction]: Checked pairs total: 46079 [2023-08-31 20:42:18,928 INFO L136 LiptonReduction]: Total number of compositions: 109 [2023-08-31 20:42:18,930 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:18,931 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;@14e65cc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:18,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:18,943 INFO L130 PetriNetUnfolder]: 6/62 cut-off events. [2023-08-31 20:42:18,943 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 20:42:18,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:18,944 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:42:18,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:18,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:18,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1741306459, now seen corresponding path program 1 times [2023-08-31 20:42:18,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:18,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464417143] [2023-08-31 20:42:18,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:18,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:18,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:19,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:19,015 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:19,016 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:19,017 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:19,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:42:19,018 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:19,018 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:19,019 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:19,019 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:42:19,039 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:42:19,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 223 transitions, 476 flow [2023-08-31 20:42:19,082 INFO L130 PetriNetUnfolder]: 50/455 cut-off events. [2023-08-31 20:42:19,082 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:42:19,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 455 events. 50/455 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1764 event pairs, 1 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 299. Up to 16 conditions per place. [2023-08-31 20:42:19,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 223 transitions, 476 flow [2023-08-31 20:42:19,089 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 204 places, 223 transitions, 476 flow [2023-08-31 20:42:19,089 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:19,090 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 204 places, 223 transitions, 476 flow [2023-08-31 20:42:19,090 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 204 places, 223 transitions, 476 flow [2023-08-31 20:42:19,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 223 transitions, 476 flow [2023-08-31 20:42:19,137 INFO L130 PetriNetUnfolder]: 50/455 cut-off events. [2023-08-31 20:42:19,137 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:42:19,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 455 events. 50/455 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1764 event pairs, 1 based on Foata normal form. 0/377 useless extension candidates. Maximal degree in co-relation 299. Up to 16 conditions per place. [2023-08-31 20:42:19,151 INFO L119 LiptonReduction]: Number of co-enabled transitions 28152 [2023-08-31 20:42:21,175 INFO L134 LiptonReduction]: Checked pairs total: 113742 [2023-08-31 20:42:21,175 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-31 20:42:21,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:21,177 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;@14e65cc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:21,178 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:21,183 INFO L130 PetriNetUnfolder]: 16/114 cut-off events. [2023-08-31 20:42:21,184 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 20:42:21,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:21,184 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:42:21,184 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:21,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:21,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1038621594, now seen corresponding path program 1 times [2023-08-31 20:42:21,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:21,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691808069] [2023-08-31 20:42:21,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:21,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:21,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:21,202 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:21,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:21,214 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:21,214 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:21,214 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:21,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:42:21,214 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:21,215 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:21,215 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:21,215 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:42:21,230 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:42:21,232 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 271 transitions, 586 flow [2023-08-31 20:42:21,303 INFO L130 PetriNetUnfolder]: 81/707 cut-off events. [2023-08-31 20:42:21,303 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:42:21,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 707 events. 81/707 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3079 event pairs, 6 based on Foata normal form. 0/589 useless extension candidates. Maximal degree in co-relation 475. Up to 32 conditions per place. [2023-08-31 20:42:21,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 247 places, 271 transitions, 586 flow [2023-08-31 20:42:21,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 247 places, 271 transitions, 586 flow [2023-08-31 20:42:21,313 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:21,313 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 247 places, 271 transitions, 586 flow [2023-08-31 20:42:21,313 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 247 places, 271 transitions, 586 flow [2023-08-31 20:42:21,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 247 places, 271 transitions, 586 flow [2023-08-31 20:42:21,391 INFO L130 PetriNetUnfolder]: 81/707 cut-off events. [2023-08-31 20:42:21,391 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:42:21,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 707 events. 81/707 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 3079 event pairs, 6 based on Foata normal form. 0/589 useless extension candidates. Maximal degree in co-relation 475. Up to 32 conditions per place. [2023-08-31 20:42:21,411 INFO L119 LiptonReduction]: Number of co-enabled transitions 46552 [2023-08-31 20:42:23,057 INFO L134 LiptonReduction]: Checked pairs total: 172882 [2023-08-31 20:42:23,057 INFO L136 LiptonReduction]: Total number of compositions: 151 [2023-08-31 20:42:23,059 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:23,060 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;@14e65cc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:23,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:23,070 INFO L130 PetriNetUnfolder]: 29/178 cut-off events. [2023-08-31 20:42:23,071 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-31 20:42:23,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:23,071 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:42:23,071 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:23,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:23,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1773332773, now seen corresponding path program 1 times [2023-08-31 20:42:23,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:23,075 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154674584] [2023-08-31 20:42:23,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:23,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:23,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:23,114 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:23,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:23,148 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:23,148 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:23,148 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:23,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:42:23,149 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:23,149 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:23,149 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:23,149 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:42:23,180 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:42:23,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 319 transitions, 698 flow [2023-08-31 20:42:23,331 INFO L130 PetriNetUnfolder]: 140/1139 cut-off events. [2023-08-31 20:42:23,331 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:42:23,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 1139 events. 140/1139 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5739 event pairs, 23 based on Foata normal form. 0/957 useless extension candidates. Maximal degree in co-relation 752. Up to 80 conditions per place. [2023-08-31 20:42:23,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 290 places, 319 transitions, 698 flow [2023-08-31 20:42:23,346 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 290 places, 319 transitions, 698 flow [2023-08-31 20:42:23,347 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:23,347 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 290 places, 319 transitions, 698 flow [2023-08-31 20:42:23,347 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 290 places, 319 transitions, 698 flow [2023-08-31 20:42:23,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 290 places, 319 transitions, 698 flow [2023-08-31 20:42:23,490 INFO L130 PetriNetUnfolder]: 140/1139 cut-off events. [2023-08-31 20:42:23,490 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:42:23,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1250 conditions, 1139 events. 140/1139 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 5739 event pairs, 23 based on Foata normal form. 0/957 useless extension candidates. Maximal degree in co-relation 752. Up to 80 conditions per place. [2023-08-31 20:42:23,525 INFO L119 LiptonReduction]: Number of co-enabled transitions 69460 [2023-08-31 20:42:25,639 INFO L134 LiptonReduction]: Checked pairs total: 266618 [2023-08-31 20:42:25,641 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-08-31 20:42:25,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:25,643 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=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;@14e65cc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:25,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:25,656 INFO L130 PetriNetUnfolder]: 42/245 cut-off events. [2023-08-31 20:42:25,656 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-31 20:42:25,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:25,656 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:42:25,656 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:25,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:25,657 INFO L85 PathProgramCache]: Analyzing trace with hash 806202999, now seen corresponding path program 1 times [2023-08-31 20:42:25,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:25,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220658372] [2023-08-31 20:42:25,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:25,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:25,696 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:25,723 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:25,724 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:25,724 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:25,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:42:25,725 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:25,727 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:25,727 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:25,727 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:42:25,750 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:42:25,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 367 transitions, 812 flow [2023-08-31 20:42:26,050 INFO L130 PetriNetUnfolder]: 263/1939 cut-off events. [2023-08-31 20:42:26,051 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:42:26,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2171 conditions, 1939 events. 263/1939 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 11837 event pairs, 72 based on Foata normal form. 0/1645 useless extension candidates. Maximal degree in co-relation 1238. Up to 192 conditions per place. [2023-08-31 20:42:26,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 367 transitions, 812 flow [2023-08-31 20:42:26,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 333 places, 367 transitions, 812 flow [2023-08-31 20:42:26,083 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:26,083 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 333 places, 367 transitions, 812 flow [2023-08-31 20:42:26,083 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 333 places, 367 transitions, 812 flow [2023-08-31 20:42:26,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 367 transitions, 812 flow [2023-08-31 20:42:26,372 INFO L130 PetriNetUnfolder]: 263/1939 cut-off events. [2023-08-31 20:42:26,373 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:42:26,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2171 conditions, 1939 events. 263/1939 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 11837 event pairs, 72 based on Foata normal form. 0/1645 useless extension candidates. Maximal degree in co-relation 1238. Up to 192 conditions per place. [2023-08-31 20:42:26,445 INFO L119 LiptonReduction]: Number of co-enabled transitions 96876 [2023-08-31 20:42:28,549 INFO L134 LiptonReduction]: Checked pairs total: 386696 [2023-08-31 20:42:28,549 INFO L136 LiptonReduction]: Total number of compositions: 193 [2023-08-31 20:42:28,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:28,551 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;@14e65cc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:28,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:28,581 INFO L130 PetriNetUnfolder]: 56/319 cut-off events. [2023-08-31 20:42:28,581 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-08-31 20:42:28,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:28,582 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:42:28,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:28,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:28,582 INFO L85 PathProgramCache]: Analyzing trace with hash -977580333, now seen corresponding path program 1 times [2023-08-31 20:42:28,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:28,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397582082] [2023-08-31 20:42:28,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:28,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:28,617 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:28,640 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:28,641 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:28,641 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:28,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:42:28,641 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:28,644 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:28,645 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:28,645 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:42:28,684 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:42:28,686 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 415 transitions, 928 flow [2023-08-31 20:42:29,263 INFO L130 PetriNetUnfolder]: 530/3491 cut-off events. [2023-08-31 20:42:29,264 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:42:29,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3989 conditions, 3491 events. 530/3491 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 25528 event pairs, 201 based on Foata normal form. 0/2989 useless extension candidates. Maximal degree in co-relation 2157. Up to 448 conditions per place. [2023-08-31 20:42:29,295 INFO L82 GeneralOperation]: Start removeDead. Operand has 376 places, 415 transitions, 928 flow [2023-08-31 20:42:29,314 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 376 places, 415 transitions, 928 flow [2023-08-31 20:42:29,314 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:29,314 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 376 places, 415 transitions, 928 flow [2023-08-31 20:42:29,314 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 376 places, 415 transitions, 928 flow [2023-08-31 20:42:29,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 376 places, 415 transitions, 928 flow [2023-08-31 20:42:29,940 INFO L130 PetriNetUnfolder]: 530/3491 cut-off events. [2023-08-31 20:42:29,940 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:42:29,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3989 conditions, 3491 events. 530/3491 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 25528 event pairs, 201 based on Foata normal form. 0/2989 useless extension candidates. Maximal degree in co-relation 2157. Up to 448 conditions per place. [2023-08-31 20:42:30,098 INFO L119 LiptonReduction]: Number of co-enabled transitions 128800 [2023-08-31 20:42:32,249 INFO L134 LiptonReduction]: Checked pairs total: 521426 [2023-08-31 20:42:32,253 INFO L136 LiptonReduction]: Total number of compositions: 219 [2023-08-31 20:42:32,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:32,262 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;@14e65cc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:32,263 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:32,315 INFO L130 PetriNetUnfolder]: 79/423 cut-off events. [2023-08-31 20:42:32,316 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-31 20:42:32,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:32,316 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:42:32,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:32,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:32,316 INFO L85 PathProgramCache]: Analyzing trace with hash -2059088384, now seen corresponding path program 1 times [2023-08-31 20:42:32,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:32,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60366338] [2023-08-31 20:42:32,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:32,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:32,351 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:32,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:32,373 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:32,373 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:32,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:42:32,373 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:32,374 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:32,374 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:32,374 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:42:32,396 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:42:32,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 419 places, 463 transitions, 1046 flow [2023-08-31 20:42:33,838 INFO L130 PetriNetUnfolder]: 1117/6579 cut-off events. [2023-08-31 20:42:33,838 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:42:33,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7664 conditions, 6579 events. 1117/6579 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 57480 event pairs, 522 based on Foata normal form. 0/5677 useless extension candidates. Maximal degree in co-relation 3973. Up to 1024 conditions per place. [2023-08-31 20:42:33,919 INFO L82 GeneralOperation]: Start removeDead. Operand has 419 places, 463 transitions, 1046 flow [2023-08-31 20:42:33,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 419 places, 463 transitions, 1046 flow [2023-08-31 20:42:33,976 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:33,976 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 419 places, 463 transitions, 1046 flow [2023-08-31 20:42:33,976 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 419 places, 463 transitions, 1046 flow [2023-08-31 20:42:33,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 419 places, 463 transitions, 1046 flow [2023-08-31 20:42:35,268 INFO L130 PetriNetUnfolder]: 1117/6579 cut-off events. [2023-08-31 20:42:35,269 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:42:35,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7664 conditions, 6579 events. 1117/6579 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 57480 event pairs, 522 based on Foata normal form. 0/5677 useless extension candidates. Maximal degree in co-relation 3973. Up to 1024 conditions per place. [2023-08-31 20:42:35,706 INFO L119 LiptonReduction]: Number of co-enabled transitions 165232 [2023-08-31 20:42:38,365 INFO L134 LiptonReduction]: Checked pairs total: 678692 [2023-08-31 20:42:38,365 INFO L136 LiptonReduction]: Total number of compositions: 237 [2023-08-31 20:42:38,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:38,368 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;@14e65cc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:38,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:38,409 INFO L130 PetriNetUnfolder]: 107/548 cut-off events. [2023-08-31 20:42:38,410 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-08-31 20:42:38,410 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:38,410 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:42:38,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:38,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:38,411 INFO L85 PathProgramCache]: Analyzing trace with hash -1230380117, now seen corresponding path program 1 times [2023-08-31 20:42:38,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:38,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312894022] [2023-08-31 20:42:38,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:38,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:38,448 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:38,460 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:38,460 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:38,460 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:38,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:42:38,460 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:38,460 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:38,460 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:38,461 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:42:38,484 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:42:38,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 462 places, 511 transitions, 1166 flow [2023-08-31 20:42:41,746 INFO L130 PetriNetUnfolder]: 2408/12803 cut-off events. [2023-08-31 20:42:41,746 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:42:41,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15180 conditions, 12803 events. 2408/12803 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 128500 event pairs, 1291 based on Foata normal form. 0/11117 useless extension candidates. Maximal degree in co-relation 7646. Up to 2304 conditions per place. [2023-08-31 20:42:41,908 INFO L82 GeneralOperation]: Start removeDead. Operand has 462 places, 511 transitions, 1166 flow [2023-08-31 20:42:42,028 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 462 places, 511 transitions, 1166 flow [2023-08-31 20:42:42,029 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:42,029 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 462 places, 511 transitions, 1166 flow [2023-08-31 20:42:42,029 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 462 places, 511 transitions, 1166 flow [2023-08-31 20:42:42,029 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 462 places, 511 transitions, 1166 flow [2023-08-31 20:42:44,905 INFO L130 PetriNetUnfolder]: 2408/12803 cut-off events. [2023-08-31 20:42:44,905 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:42:45,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15180 conditions, 12803 events. 2408/12803 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 128500 event pairs, 1291 based on Foata normal form. 0/11117 useless extension candidates. Maximal degree in co-relation 7646. Up to 2304 conditions per place. [2023-08-31 20:42:45,839 INFO L119 LiptonReduction]: Number of co-enabled transitions 206172 [2023-08-31 20:42:48,807 INFO L134 LiptonReduction]: Checked pairs total: 850815 [2023-08-31 20:42:48,808 INFO L136 LiptonReduction]: Total number of compositions: 258 [2023-08-31 20:42:48,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:48,809 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;@14e65cc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:48,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:48,885 INFO L130 PetriNetUnfolder]: 155/734 cut-off events. [2023-08-31 20:42:48,885 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-08-31 20:42:48,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:48,885 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:42:48,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:48,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:48,886 INFO L85 PathProgramCache]: Analyzing trace with hash 504306362, now seen corresponding path program 1 times [2023-08-31 20:42:48,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:48,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028222792] [2023-08-31 20:42:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:48,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:48,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:48,900 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:48,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:48,912 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:48,912 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:48,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:42:48,912 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:48,912 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:48,912 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:48,913 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:42:48,939 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:42:48,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 505 places, 559 transitions, 1288 flow [2023-08-31 20:42:55,428 INFO L130 PetriNetUnfolder]: 5235/25427 cut-off events. [2023-08-31 20:42:55,428 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:42:55,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30633 conditions, 25427 events. 5235/25427 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 288458 event pairs, 3084 based on Foata normal form. 0/22189 useless extension candidates. Maximal degree in co-relation 15160. Up to 5120 conditions per place. [2023-08-31 20:42:55,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 505 places, 559 transitions, 1288 flow [2023-08-31 20:42:56,146 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 505 places, 559 transitions, 1288 flow [2023-08-31 20:42:56,146 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:56,147 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 505 places, 559 transitions, 1288 flow [2023-08-31 20:42:56,147 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 505 places, 559 transitions, 1288 flow [2023-08-31 20:42:56,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 505 places, 559 transitions, 1288 flow [2023-08-31 20:43:02,377 INFO L130 PetriNetUnfolder]: 5235/25427 cut-off events. [2023-08-31 20:43:02,378 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:43:02,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30633 conditions, 25427 events. 5235/25427 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 361. Compared 288458 event pairs, 3084 based on Foata normal form. 0/22189 useless extension candidates. Maximal degree in co-relation 15160. Up to 5120 conditions per place. [2023-08-31 20:43:04,416 INFO L119 LiptonReduction]: Number of co-enabled transitions 251620 [2023-08-31 20:43:07,539 INFO L134 LiptonReduction]: Checked pairs total: 1054433 [2023-08-31 20:43:07,540 INFO L136 LiptonReduction]: Total number of compositions: 281 [2023-08-31 20:43:07,541 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:43:07,541 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;@14e65cc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:43:07,541 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:43:07,655 INFO L130 PetriNetUnfolder]: 228/993 cut-off events. [2023-08-31 20:43:07,655 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-08-31 20:43:07,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:43:07,655 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:43:07,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:43:07,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:43:07,656 INFO L85 PathProgramCache]: Analyzing trace with hash 496725366, now seen corresponding path program 1 times [2023-08-31 20:43:07,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:43:07,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865130873] [2023-08-31 20:43:07,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:43:07,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:43:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:43:07,671 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:43:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:43:07,683 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:43:07,683 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:43:07,683 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:43:07,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:43:07,683 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:43:07,684 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:43:07,684 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:43:07,684 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:43:07,714 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:43:07,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 548 places, 607 transitions, 1412 flow [2023-08-31 20:43:22,177 INFO L130 PetriNetUnfolder]: 11390/51107 cut-off events. [2023-08-31 20:43:22,177 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:43:24,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62471 conditions, 51107 events. 11390/51107 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 647588 event pairs, 7181 based on Foata normal form. 0/44781 useless extension candidates. Maximal degree in co-relation 30612. Up to 11264 conditions per place. [2023-08-31 20:43:24,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 548 places, 607 transitions, 1412 flow [2023-08-31 20:43:25,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 548 places, 607 transitions, 1412 flow [2023-08-31 20:43:25,190 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:43:25,190 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 548 places, 607 transitions, 1412 flow [2023-08-31 20:43:25,190 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 548 places, 607 transitions, 1412 flow [2023-08-31 20:43:25,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 548 places, 607 transitions, 1412 flow [2023-08-31 20:43:38,791 INFO L130 PetriNetUnfolder]: 11390/51107 cut-off events. [2023-08-31 20:43:38,791 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:43:40,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62471 conditions, 51107 events. 11390/51107 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 687. Compared 647588 event pairs, 7181 based on Foata normal form. 0/44781 useless extension candidates. Maximal degree in co-relation 30612. Up to 11264 conditions per place. [2023-08-31 20:43:43,810 INFO L119 LiptonReduction]: Number of co-enabled transitions 301576 [2023-08-31 20:43:46,710 INFO L134 LiptonReduction]: Checked pairs total: 1263521 [2023-08-31 20:43:46,710 INFO L136 LiptonReduction]: Total number of compositions: 305 [2023-08-31 20:43:46,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:43:46,711 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@14e65cc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:43:46,711 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:43:46,886 INFO L130 PetriNetUnfolder]: 354/1390 cut-off events. [2023-08-31 20:43:46,886 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-08-31 20:43:46,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:43:46,887 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:43:46,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:43:46,887 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:43:46,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1996034332, now seen corresponding path program 1 times [2023-08-31 20:43:46,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:43:46,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202703920] [2023-08-31 20:43:46,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:43:46,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:43:46,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:43:46,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:43:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:43:46,930 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:43:46,930 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:43:46,930 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:43:46,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:43:46,931 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:43:46,931 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:43:46,931 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:43:46,931 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:43:46,957 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:43:46,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 591 places, 655 transitions, 1538 flow [2023-08-31 20:44:19,894 INFO L130 PetriNetUnfolder]: 24713/103411 cut-off events. [2023-08-31 20:44:19,895 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:44:25,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128102 conditions, 103411 events. 24713/103411 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 1436746 event pairs, 16398 based on Foata normal form. 0/90925 useless extension candidates. Maximal degree in co-relation 62450. Up to 24576 conditions per place. [2023-08-31 20:44:25,124 INFO L82 GeneralOperation]: Start removeDead. Operand has 591 places, 655 transitions, 1538 flow [2023-08-31 20:44:27,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 591 places, 655 transitions, 1538 flow [2023-08-31 20:44:27,451 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:44:27,451 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 591 places, 655 transitions, 1538 flow [2023-08-31 20:44:27,452 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 591 places, 655 transitions, 1538 flow [2023-08-31 20:44:27,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 591 places, 655 transitions, 1538 flow [2023-08-31 20:44:58,409 INFO L130 PetriNetUnfolder]: 24713/103411 cut-off events. [2023-08-31 20:44:58,409 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:45:02,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128102 conditions, 103411 events. 24713/103411 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1325. Compared 1436746 event pairs, 16398 based on Foata normal form. 0/90925 useless extension candidates. Maximal degree in co-relation 62450. Up to 24576 conditions per place. [2023-08-31 20:45:16,518 INFO L119 LiptonReduction]: Number of co-enabled transitions 356040 [2023-08-31 20:45:19,667 INFO L134 LiptonReduction]: Checked pairs total: 1491728 [2023-08-31 20:45:19,668 INFO L136 LiptonReduction]: Total number of compositions: 327 [2023-08-31 20:45:19,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:45:19,670 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;@14e65cc3, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:45:19,670 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:45:19,931 INFO L130 PetriNetUnfolder]: 568/2003 cut-off events. [2023-08-31 20:45:19,932 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-08-31 20:45:19,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:45:19,932 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 20:45:19,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:45:19,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:45:19,932 INFO L85 PathProgramCache]: Analyzing trace with hash 437984047, now seen corresponding path program 1 times [2023-08-31 20:45:19,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:45:19,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077867499] [2023-08-31 20:45:19,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:45:19,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:45:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:19,990 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:45:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:45:20,004 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:45:20,005 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:45:20,005 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:45:20,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 20:45:20,005 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:45:20,005 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:45:20,005 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:45:20,006 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 20:45:20,033 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 20:45:20,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 634 places, 703 transitions, 1666 flow [2023-08-31 20:46:34,910 INFO L130 PetriNetUnfolder]: 53396/209987 cut-off events. [2023-08-31 20:46:34,910 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-08-31 20:46:46,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263366 conditions, 209987 events. 53396/209987 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2546. Compared 3166189 event pairs, 36879 based on Foata normal form. 0/185197 useless extension candidates. Maximal degree in co-relation 128081. Up to 53248 conditions per place. [2023-08-31 20:46:46,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 634 places, 703 transitions, 1666 flow [2023-08-31 20:46:52,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 634 places, 703 transitions, 1666 flow [2023-08-31 20:46:52,169 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:46:52,169 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 634 places, 703 transitions, 1666 flow [2023-08-31 20:46:52,169 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 634 places, 703 transitions, 1666 flow [2023-08-31 20:46:52,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 634 places, 703 transitions, 1666 flow