./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_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_51-mutexptr_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 f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e --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 20:56:36,713 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:56:36,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:56:36,740 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:56:36,741 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:56:36,742 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:56:36,743 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:56:36,745 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:56:36,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:56:36,747 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:56:36,747 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:56:36,748 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:56:36,749 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:56:36,750 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:56:36,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:56:36,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:56:36,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:56:36,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:56:36,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:56:36,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:56:36,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:56:36,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:56:36,760 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:56:36,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:56:36,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:56:36,764 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:56:36,764 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:56:36,765 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:56:36,766 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:56:36,767 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:56:36,767 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:56:36,768 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:56:36,768 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:56:36,769 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:56:36,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:56:36,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:56:36,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:56:36,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:56:36,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:56:36,772 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:56:36,773 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:56:36,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:56:36,799 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:56:36,799 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:56:36,800 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:56:36,800 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:56:36,801 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:56:36,801 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:56:36,801 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:56:36,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:56:36,802 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:56:36,802 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:56:36,802 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:56:36,802 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:56:36,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:56:36,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:56:36,803 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:56:36,803 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:56:36,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:56:36,803 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:56:36,803 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:56:36,803 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:56:36,804 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:56:36,804 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:56:36,804 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:56:36,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:56:36,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:56:36,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:56:36,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:56:36,805 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:56:36,805 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:56:36,805 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:56:36,805 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:56:36,805 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:56:36,806 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:56:36,806 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:56:36,806 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:56:36,806 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:56:36,806 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:56:36,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f222d5749b9bb10b4d4c09b2c40e45ee19dec77732a8593ce917652e8ca8a43e Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:56:37,097 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:56:37,121 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:56:37,123 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:56:37,124 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:56:37,125 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:56:37,126 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-08-31 20:56:38,165 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:56:38,399 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:56:38,399 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_51-mutexptr_racefree.i [2023-08-31 20:56:38,414 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af92817ef/648263299e5841c38b5afb52bd026fd5/FLAG21ddf94c6 [2023-08-31 20:56:38,426 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af92817ef/648263299e5841c38b5afb52bd026fd5 [2023-08-31 20:56:38,428 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:56:38,429 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:56:38,431 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:56:38,431 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:56:38,434 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:56:38,435 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:56:38" (1/1) ... [2023-08-31 20:56:38,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443a26e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:56:38, skipping insertion in model container [2023-08-31 20:56:38,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:56:38" (1/1) ... [2023-08-31 20:56:38,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:56:38,482 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:56:38,725 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_51-mutexptr_racefree.i[30176,30189] [2023-08-31 20:56:38,748 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:56:38,761 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:56:38,792 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_51-mutexptr_racefree.i[30176,30189] [2023-08-31 20:56:38,800 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:56:38,836 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:56:38,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:56:38 WrapperNode [2023-08-31 20:56:38,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:56:38,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:56:38,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:56:38,839 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:56:38,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:56:38" (1/1) ... [2023-08-31 20:56:38,865 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:56:38" (1/1) ... [2023-08-31 20:56:38,884 INFO L138 Inliner]: procedures = 170, calls = 37, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 106 [2023-08-31 20:56:38,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:56:38,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:56:38,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:56:38,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:56:38,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:56:38" (1/1) ... [2023-08-31 20:56:38,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:56:38" (1/1) ... [2023-08-31 20:56:38,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:56:38" (1/1) ... [2023-08-31 20:56:38,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:56:38" (1/1) ... [2023-08-31 20:56:38,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:56:38" (1/1) ... [2023-08-31 20:56:38,908 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:56:38" (1/1) ... [2023-08-31 20:56:38,910 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:56:38" (1/1) ... [2023-08-31 20:56:38,911 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:56:38" (1/1) ... [2023-08-31 20:56:38,914 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:56:38,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:56:38,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:56:38,915 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:56:38,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:56:38" (1/1) ... [2023-08-31 20:56:38,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:56:38,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:56:38,942 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 20:56:38,944 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 20:56:38,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:56:38,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:56:38,964 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:56:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:56:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:56:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:56:38,965 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:56:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:56:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:56:38,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:56:38,966 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:56:38,967 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 20:56:39,083 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:56:39,085 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:56:39,392 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:56:39,400 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:56:39,400 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-31 20:56:39,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:56:39 BoogieIcfgContainer [2023-08-31 20:56:39,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:56:39,404 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:56:39,404 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:56:39,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:56:39,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:56:38" (1/3) ... [2023-08-31 20:56:39,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0fc384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:56:39, skipping insertion in model container [2023-08-31 20:56:39,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:56:38" (2/3) ... [2023-08-31 20:56:39,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b0fc384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:56:39, skipping insertion in model container [2023-08-31 20:56:39,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:56:39" (3/3) ... [2023-08-31 20:56:39,408 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_51-mutexptr_racefree.i [2023-08-31 20:56:39,415 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:56:39,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:56:39,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-31 20:56:39,424 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:56:39,487 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:56:39,525 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 179 transitions, 366 flow [2023-08-31 20:56:39,675 INFO L130 PetriNetUnfolder]: 17/232 cut-off events. [2023-08-31 20:56:39,675 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:56:39,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 238 conditions, 232 events. 17/232 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 670 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 127. Up to 4 conditions per place. [2023-08-31 20:56:39,683 INFO L82 GeneralOperation]: Start removeDead. Operand has 170 places, 179 transitions, 366 flow [2023-08-31 20:56:39,690 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 173 transitions, 351 flow [2023-08-31 20:56:39,694 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:56:39,710 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 173 transitions, 351 flow [2023-08-31 20:56:39,720 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 173 transitions, 351 flow [2023-08-31 20:56:39,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 173 transitions, 351 flow [2023-08-31 20:56:39,782 INFO L130 PetriNetUnfolder]: 16/226 cut-off events. [2023-08-31 20:56:39,783 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:56:39,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 226 events. 16/226 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 652 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 127. Up to 4 conditions per place. [2023-08-31 20:56:39,791 INFO L119 LiptonReduction]: Number of co-enabled transitions 8142 [2023-08-31 20:56:43,144 INFO L134 LiptonReduction]: Checked pairs total: 36202 [2023-08-31 20:56:43,145 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-31 20:56:43,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:43,161 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;@3205cd99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:43,161 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:43,166 INFO L130 PetriNetUnfolder]: 0/21 cut-off events. [2023-08-31 20:56:43,166 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:56:43,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:43,167 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:56:43,167 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:43,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:43,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1047750956, now seen corresponding path program 1 times [2023-08-31 20:56:43,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:43,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856632921] [2023-08-31 20:56:43,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:43,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:43,311 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:43,379 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:43,381 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:43,383 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:43,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:56:43,385 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:43,395 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:43,396 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:43,396 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:56:43,431 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:56:43,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 236 places, 250 transitions, 518 flow [2023-08-31 20:56:43,484 INFO L130 PetriNetUnfolder]: 31/386 cut-off events. [2023-08-31 20:56:43,484 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:56:43,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 400 conditions, 386 events. 31/386 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1492 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 234. Up to 8 conditions per place. [2023-08-31 20:56:43,489 INFO L82 GeneralOperation]: Start removeDead. Operand has 236 places, 250 transitions, 518 flow [2023-08-31 20:56:43,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 249 transitions, 516 flow [2023-08-31 20:56:43,492 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:56:43,492 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 249 transitions, 516 flow [2023-08-31 20:56:43,492 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 249 transitions, 516 flow [2023-08-31 20:56:43,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 249 transitions, 516 flow [2023-08-31 20:56:43,546 INFO L130 PetriNetUnfolder]: 31/385 cut-off events. [2023-08-31 20:56:43,546 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:56:43,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 399 conditions, 385 events. 31/385 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1484 event pairs, 0 based on Foata normal form. 0/325 useless extension candidates. Maximal degree in co-relation 233. Up to 8 conditions per place. [2023-08-31 20:56:43,563 INFO L119 LiptonReduction]: Number of co-enabled transitions 27324 [2023-08-31 20:56:46,627 INFO L134 LiptonReduction]: Checked pairs total: 146058 [2023-08-31 20:56:46,628 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-31 20:56:46,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:46,631 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;@3205cd99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:46,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:46,637 INFO L130 PetriNetUnfolder]: 3/68 cut-off events. [2023-08-31 20:56:46,637 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 20:56:46,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:46,637 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:56:46,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:46,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:46,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1448956432, now seen corresponding path program 1 times [2023-08-31 20:56:46,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:46,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593716284] [2023-08-31 20:56:46,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:46,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:46,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:46,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:46,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:46,685 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:46,686 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:46,686 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:46,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:56:46,686 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:46,687 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:46,687 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:46,687 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:56:46,720 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:56:46,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 302 places, 321 transitions, 672 flow [2023-08-31 20:56:46,825 INFO L130 PetriNetUnfolder]: 50/583 cut-off events. [2023-08-31 20:56:46,826 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:56:46,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 583 events. 50/583 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2556 event pairs, 1 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 394. Up to 16 conditions per place. [2023-08-31 20:56:46,831 INFO L82 GeneralOperation]: Start removeDead. Operand has 302 places, 321 transitions, 672 flow [2023-08-31 20:56:46,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 301 places, 320 transitions, 670 flow [2023-08-31 20:56:46,835 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:56:46,835 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 301 places, 320 transitions, 670 flow [2023-08-31 20:56:46,836 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 301 places, 320 transitions, 670 flow [2023-08-31 20:56:46,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 301 places, 320 transitions, 670 flow [2023-08-31 20:56:46,913 INFO L130 PetriNetUnfolder]: 50/582 cut-off events. [2023-08-31 20:56:46,914 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:56:46,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 610 conditions, 582 events. 50/582 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2552 event pairs, 1 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 393. Up to 16 conditions per place. [2023-08-31 20:56:46,944 INFO L119 LiptonReduction]: Number of co-enabled transitions 55890 [2023-08-31 20:56:50,272 INFO L134 LiptonReduction]: Checked pairs total: 352786 [2023-08-31 20:56:50,272 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-08-31 20:56:50,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:50,275 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;@3205cd99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:50,275 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:50,286 INFO L130 PetriNetUnfolder]: 7/126 cut-off events. [2023-08-31 20:56:50,286 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 20:56:50,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:50,286 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:56:50,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:50,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:50,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2063193029, now seen corresponding path program 1 times [2023-08-31 20:56:50,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:50,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371575496] [2023-08-31 20:56:50,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:50,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:50,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:50,310 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:50,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:50,330 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:50,330 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:50,330 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:50,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:56:50,331 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:50,331 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:50,332 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:50,332 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:56:50,364 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:56:50,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 368 places, 392 transitions, 828 flow [2023-08-31 20:56:50,563 INFO L130 PetriNetUnfolder]: 81/868 cut-off events. [2023-08-31 20:56:50,563 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:56:50,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923 conditions, 868 events. 81/868 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 4141 event pairs, 6 based on Foata normal form. 0/731 useless extension candidates. Maximal degree in co-relation 603. Up to 32 conditions per place. [2023-08-31 20:56:50,576 INFO L82 GeneralOperation]: Start removeDead. Operand has 368 places, 392 transitions, 828 flow [2023-08-31 20:56:50,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 391 transitions, 826 flow [2023-08-31 20:56:50,583 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:56:50,583 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 367 places, 391 transitions, 826 flow [2023-08-31 20:56:50,583 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 367 places, 391 transitions, 826 flow [2023-08-31 20:56:50,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 391 transitions, 826 flow [2023-08-31 20:56:50,748 INFO L130 PetriNetUnfolder]: 81/867 cut-off events. [2023-08-31 20:56:50,748 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:56:50,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 922 conditions, 867 events. 81/867 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 4110 event pairs, 6 based on Foata normal form. 0/731 useless extension candidates. Maximal degree in co-relation 602. Up to 32 conditions per place. [2023-08-31 20:56:50,795 INFO L119 LiptonReduction]: Number of co-enabled transitions 94392 [2023-08-31 20:56:54,470 INFO L134 LiptonReduction]: Checked pairs total: 552034 [2023-08-31 20:56:54,472 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-08-31 20:56:54,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:54,476 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;@3205cd99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:54,480 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:54,511 INFO L130 PetriNetUnfolder]: 11/193 cut-off events. [2023-08-31 20:56:54,511 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-08-31 20:56:54,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:54,512 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:56:54,513 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:54,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:54,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1929269091, now seen corresponding path program 1 times [2023-08-31 20:56:54,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:54,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122328156] [2023-08-31 20:56:54,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:54,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:54,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:54,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:54,595 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:54,597 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:54,599 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:54,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:56:54,599 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:54,600 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:54,600 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:54,600 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:56:54,646 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:56:54,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 434 places, 463 transitions, 986 flow [2023-08-31 20:56:54,951 INFO L130 PetriNetUnfolder]: 140/1333 cut-off events. [2023-08-31 20:56:54,951 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:56:54,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1444 conditions, 1333 events. 140/1333 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 7186 event pairs, 23 based on Foata normal form. 0/1128 useless extension candidates. Maximal degree in co-relation 913. Up to 80 conditions per place. [2023-08-31 20:56:54,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 434 places, 463 transitions, 986 flow [2023-08-31 20:56:54,980 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 433 places, 462 transitions, 984 flow [2023-08-31 20:56:54,981 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:56:54,981 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 433 places, 462 transitions, 984 flow [2023-08-31 20:56:54,981 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 433 places, 462 transitions, 984 flow [2023-08-31 20:56:54,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 433 places, 462 transitions, 984 flow [2023-08-31 20:56:55,211 INFO L130 PetriNetUnfolder]: 140/1332 cut-off events. [2023-08-31 20:56:55,212 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:56:55,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1443 conditions, 1332 events. 140/1332 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 7193 event pairs, 23 based on Foata normal form. 0/1128 useless extension candidates. Maximal degree in co-relation 912. Up to 80 conditions per place. [2023-08-31 20:56:55,328 INFO L119 LiptonReduction]: Number of co-enabled transitions 142830 [2023-08-31 20:56:58,856 INFO L134 LiptonReduction]: Checked pairs total: 852377 [2023-08-31 20:56:58,856 INFO L136 LiptonReduction]: Total number of compositions: 209 [2023-08-31 20:56:58,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:56:58,858 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;@3205cd99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:56:58,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:56:58,882 INFO L130 PetriNetUnfolder]: 19/271 cut-off events. [2023-08-31 20:56:58,882 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-08-31 20:56:58,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:56:58,883 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:56:58,883 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:56:58,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:56:58,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1743938017, now seen corresponding path program 1 times [2023-08-31 20:56:58,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:56:58,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173684798] [2023-08-31 20:56:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:56:58,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:56:58,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:58,904 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:56:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:56:58,922 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:56:58,922 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:56:58,922 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:56:58,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:56:58,923 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:56:58,923 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:56:58,924 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:56:58,924 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:56:58,961 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:56:58,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 534 transitions, 1146 flow [2023-08-31 20:56:59,468 INFO L130 PetriNetUnfolder]: 263/2166 cut-off events. [2023-08-31 20:56:59,469 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:56:59,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2398 conditions, 2166 events. 263/2166 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 13685 event pairs, 72 based on Foata normal form. 0/1845 useless extension candidates. Maximal degree in co-relation 1432. Up to 192 conditions per place. [2023-08-31 20:56:59,521 INFO L82 GeneralOperation]: Start removeDead. Operand has 500 places, 534 transitions, 1146 flow [2023-08-31 20:56:59,572 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 499 places, 533 transitions, 1144 flow [2023-08-31 20:56:59,576 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:56:59,577 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 499 places, 533 transitions, 1144 flow [2023-08-31 20:56:59,577 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 499 places, 533 transitions, 1144 flow [2023-08-31 20:56:59,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 499 places, 533 transitions, 1144 flow [2023-08-31 20:57:00,075 INFO L130 PetriNetUnfolder]: 263/2165 cut-off events. [2023-08-31 20:57:00,076 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:57:00,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2397 conditions, 2165 events. 263/2165 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 13614 event pairs, 72 based on Foata normal form. 0/1845 useless extension candidates. Maximal degree in co-relation 1431. Up to 192 conditions per place. [2023-08-31 20:57:00,423 INFO L119 LiptonReduction]: Number of co-enabled transitions 201204 [2023-08-31 20:57:04,521 INFO L134 LiptonReduction]: Checked pairs total: 1210094 [2023-08-31 20:57:04,521 INFO L136 LiptonReduction]: Total number of compositions: 236 [2023-08-31 20:57:04,523 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:57:04,523 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;@3205cd99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:57:04,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:57:04,558 INFO L130 PetriNetUnfolder]: 28/352 cut-off events. [2023-08-31 20:57:04,559 INFO L131 PetriNetUnfolder]: For 56/56 co-relation queries the response was YES. [2023-08-31 20:57:04,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:57:04,559 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:57:04,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:57:04,560 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:57:04,560 INFO L85 PathProgramCache]: Analyzing trace with hash -321967370, now seen corresponding path program 1 times [2023-08-31 20:57:04,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:57:04,560 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782829019] [2023-08-31 20:57:04,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:57:04,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:57:04,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:57:04,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:57:04,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:57:04,625 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:57:04,626 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:57:04,626 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:57:04,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:57:04,626 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:57:04,630 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:57:04,630 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:57:04,630 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:57:04,676 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:57:04,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 566 places, 605 transitions, 1308 flow [2023-08-31 20:57:05,721 INFO L130 PetriNetUnfolder]: 530/3751 cut-off events. [2023-08-31 20:57:05,722 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:57:05,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4249 conditions, 3751 events. 530/3751 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 27716 event pairs, 201 based on Foata normal form. 0/3218 useless extension candidates. Maximal degree in co-relation 2384. Up to 448 conditions per place. [2023-08-31 20:57:05,849 INFO L82 GeneralOperation]: Start removeDead. Operand has 566 places, 605 transitions, 1308 flow [2023-08-31 20:57:05,886 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 565 places, 604 transitions, 1306 flow [2023-08-31 20:57:05,887 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:57:05,887 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 565 places, 604 transitions, 1306 flow [2023-08-31 20:57:05,887 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 565 places, 604 transitions, 1306 flow [2023-08-31 20:57:05,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 565 places, 604 transitions, 1306 flow [2023-08-31 20:57:06,935 INFO L130 PetriNetUnfolder]: 530/3750 cut-off events. [2023-08-31 20:57:06,936 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:57:07,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4248 conditions, 3750 events. 530/3750 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 27463 event pairs, 201 based on Foata normal form. 0/3218 useless extension candidates. Maximal degree in co-relation 2383. Up to 448 conditions per place. [2023-08-31 20:57:07,489 INFO L119 LiptonReduction]: Number of co-enabled transitions 269514 [2023-08-31 20:57:11,760 INFO L134 LiptonReduction]: Checked pairs total: 1646813 [2023-08-31 20:57:11,760 INFO L136 LiptonReduction]: Total number of compositions: 261 [2023-08-31 20:57:11,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:57:11,765 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;@3205cd99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:57:11,765 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:57:11,802 INFO L130 PetriNetUnfolder]: 37/438 cut-off events. [2023-08-31 20:57:11,802 INFO L131 PetriNetUnfolder]: For 87/87 co-relation queries the response was YES. [2023-08-31 20:57:11,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:57:11,803 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:57:11,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:57:11,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:57:11,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1566571870, now seen corresponding path program 1 times [2023-08-31 20:57:11,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:57:11,803 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6752308] [2023-08-31 20:57:11,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:57:11,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:57:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:57:11,841 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:57:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:57:11,869 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:57:11,869 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:57:11,869 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:57:11,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:57:11,870 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:57:11,870 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:57:11,871 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:57:11,871 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:57:11,946 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:57:11,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 632 places, 676 transitions, 1472 flow [2023-08-31 20:57:13,953 INFO L130 PetriNetUnfolder]: 1117/6872 cut-off events. [2023-08-31 20:57:13,954 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:57:14,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7957 conditions, 6872 events. 1117/6872 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 59254 event pairs, 522 based on Foata normal form. 0/5935 useless extension candidates. Maximal degree in co-relation 4233. Up to 1024 conditions per place. [2023-08-31 20:57:14,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 632 places, 676 transitions, 1472 flow [2023-08-31 20:57:14,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 631 places, 675 transitions, 1470 flow [2023-08-31 20:57:14,267 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:57:14,267 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 631 places, 675 transitions, 1470 flow [2023-08-31 20:57:14,267 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 631 places, 675 transitions, 1470 flow [2023-08-31 20:57:14,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 631 places, 675 transitions, 1470 flow [2023-08-31 20:57:16,025 INFO L130 PetriNetUnfolder]: 1117/6871 cut-off events. [2023-08-31 20:57:16,026 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:57:16,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7956 conditions, 6871 events. 1117/6871 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 59162 event pairs, 522 based on Foata normal form. 0/5935 useless extension candidates. Maximal degree in co-relation 4232. Up to 1024 conditions per place. [2023-08-31 20:57:16,696 INFO L119 LiptonReduction]: Number of co-enabled transitions 347760 [2023-08-31 20:57:21,269 INFO L134 LiptonReduction]: Checked pairs total: 2142222 [2023-08-31 20:57:21,269 INFO L136 LiptonReduction]: Total number of compositions: 289 [2023-08-31 20:57:21,272 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:57:21,273 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;@3205cd99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:57:21,273 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:57:21,322 INFO L130 PetriNetUnfolder]: 46/533 cut-off events. [2023-08-31 20:57:21,323 INFO L131 PetriNetUnfolder]: For 127/127 co-relation queries the response was YES. [2023-08-31 20:57:21,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:57:21,323 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:57:21,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:57:21,323 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:57:21,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1089561872, now seen corresponding path program 1 times [2023-08-31 20:57:21,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:57:21,323 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066048405] [2023-08-31 20:57:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:57:21,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:57:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:57:21,364 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:57:21,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:57:21,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:57:21,393 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:57:21,393 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:57:21,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:57:21,394 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:57:21,396 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:57:21,396 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:57:21,398 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:57:21,447 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:57:21,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 698 places, 747 transitions, 1638 flow [2023-08-31 20:57:25,493 INFO L130 PetriNetUnfolder]: 2408/13129 cut-off events. [2023-08-31 20:57:25,494 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:57:25,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15506 conditions, 13129 events. 2408/13129 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 130794 event pairs, 1291 based on Foata normal form. 0/11404 useless extension candidates. Maximal degree in co-relation 7939. Up to 2304 conditions per place. [2023-08-31 20:57:25,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 698 places, 747 transitions, 1638 flow [2023-08-31 20:57:26,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 697 places, 746 transitions, 1636 flow [2023-08-31 20:57:26,104 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:57:26,105 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 697 places, 746 transitions, 1636 flow [2023-08-31 20:57:26,105 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 697 places, 746 transitions, 1636 flow [2023-08-31 20:57:26,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 697 places, 746 transitions, 1636 flow [2023-08-31 20:57:30,192 INFO L130 PetriNetUnfolder]: 2408/13128 cut-off events. [2023-08-31 20:57:30,192 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:57:30,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15505 conditions, 13128 events. 2408/13128 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 130770 event pairs, 1291 based on Foata normal form. 0/11404 useless extension candidates. Maximal degree in co-relation 7938. Up to 2304 conditions per place. [2023-08-31 20:57:31,543 INFO L119 LiptonReduction]: Number of co-enabled transitions 435942 [2023-08-31 20:57:35,955 INFO L134 LiptonReduction]: Checked pairs total: 2703714 [2023-08-31 20:57:35,956 INFO L136 LiptonReduction]: Total number of compositions: 311 [2023-08-31 20:57:35,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:57:35,958 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;@3205cd99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:57:35,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:57:36,041 INFO L130 PetriNetUnfolder]: 56/640 cut-off events. [2023-08-31 20:57:36,041 INFO L131 PetriNetUnfolder]: For 178/178 co-relation queries the response was YES. [2023-08-31 20:57:36,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:57:36,041 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:57:36,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:57:36,042 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:57:36,042 INFO L85 PathProgramCache]: Analyzing trace with hash 2022347479, now seen corresponding path program 1 times [2023-08-31 20:57:36,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:57:36,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887067784] [2023-08-31 20:57:36,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:57:36,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:57:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:57:36,062 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:57:36,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:57:36,081 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:57:36,082 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:57:36,082 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:57:36,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:57:36,082 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:57:36,083 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:57:36,083 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:57:36,083 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:57:36,163 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:57:36,168 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 764 places, 818 transitions, 1806 flow [2023-08-31 20:57:45,287 INFO L130 PetriNetUnfolder]: 5235/25786 cut-off events. [2023-08-31 20:57:45,287 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:57:46,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30992 conditions, 25786 events. 5235/25786 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 292208 event pairs, 3084 based on Foata normal form. 0/22505 useless extension candidates. Maximal degree in co-relation 15486. Up to 5120 conditions per place. [2023-08-31 20:57:46,103 INFO L82 GeneralOperation]: Start removeDead. Operand has 764 places, 818 transitions, 1806 flow [2023-08-31 20:57:46,454 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 763 places, 817 transitions, 1804 flow [2023-08-31 20:57:46,455 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:57:46,455 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 763 places, 817 transitions, 1804 flow [2023-08-31 20:57:46,455 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 763 places, 817 transitions, 1804 flow [2023-08-31 20:57:46,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 763 places, 817 transitions, 1804 flow [2023-08-31 20:57:55,573 INFO L130 PetriNetUnfolder]: 5235/25785 cut-off events. [2023-08-31 20:57:55,573 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:57:56,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30991 conditions, 25785 events. 5235/25785 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 357. Compared 290860 event pairs, 3084 based on Foata normal form. 0/22505 useless extension candidates. Maximal degree in co-relation 15485. Up to 5120 conditions per place. [2023-08-31 20:57:58,922 INFO L119 LiptonReduction]: Number of co-enabled transitions 534060 [2023-08-31 20:58:03,869 INFO L134 LiptonReduction]: Checked pairs total: 2906653 [2023-08-31 20:58:03,869 INFO L136 LiptonReduction]: Total number of compositions: 339 [2023-08-31 20:58:03,871 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:58:03,871 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;@3205cd99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:58:03,871 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:58:03,981 INFO L130 PetriNetUnfolder]: 68/760 cut-off events. [2023-08-31 20:58:03,981 INFO L131 PetriNetUnfolder]: For 243/243 co-relation queries the response was YES. [2023-08-31 20:58:03,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:58:03,981 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:58:03,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:58:03,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:58:03,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1206996066, now seen corresponding path program 1 times [2023-08-31 20:58:03,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:58:03,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601022223] [2023-08-31 20:58:03,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:58:03,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:58:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:04,003 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:58:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:58:04,023 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:58:04,023 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:58:04,023 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:58:04,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:58:04,024 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:58:04,024 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:58:04,024 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:58:04,024 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:58:04,076 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:58:04,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 830 places, 889 transitions, 1976 flow [2023-08-31 20:58:24,232 INFO L130 PetriNetUnfolder]: 11390/51499 cut-off events. [2023-08-31 20:58:24,232 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:58:27,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62863 conditions, 51499 events. 11390/51499 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 647305 event pairs, 7181 based on Foata normal form. 0/45126 useless extension candidates. Maximal degree in co-relation 30970. Up to 11264 conditions per place. [2023-08-31 20:58:27,361 INFO L82 GeneralOperation]: Start removeDead. Operand has 830 places, 889 transitions, 1976 flow [2023-08-31 20:58:28,278 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 829 places, 888 transitions, 1974 flow [2023-08-31 20:58:28,278 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:58:28,279 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 829 places, 888 transitions, 1974 flow [2023-08-31 20:58:28,279 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 829 places, 888 transitions, 1974 flow [2023-08-31 20:58:28,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 829 places, 888 transitions, 1974 flow [2023-08-31 20:58:50,458 INFO L130 PetriNetUnfolder]: 11390/51498 cut-off events. [2023-08-31 20:58:50,459 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:58:53,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62862 conditions, 51498 events. 11390/51498 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 679. Compared 647668 event pairs, 7181 based on Foata normal form. 0/45126 useless extension candidates. Maximal degree in co-relation 30969. Up to 11264 conditions per place. [2023-08-31 20:58:58,981 INFO L119 LiptonReduction]: Number of co-enabled transitions 642114 [2023-08-31 20:59:04,172 INFO L134 LiptonReduction]: Checked pairs total: 4007458 [2023-08-31 20:59:04,172 INFO L136 LiptonReduction]: Total number of compositions: 362 [2023-08-31 20:59:04,173 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:59:04,173 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;@3205cd99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:59:04,173 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:59:04,286 INFO L130 PetriNetUnfolder]: 94/907 cut-off events. [2023-08-31 20:59:04,286 INFO L131 PetriNetUnfolder]: For 325/325 co-relation queries the response was YES. [2023-08-31 20:59:04,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:59:04,286 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:59:04,287 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:59:04,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:59:04,287 INFO L85 PathProgramCache]: Analyzing trace with hash -549108975, now seen corresponding path program 1 times [2023-08-31 20:59:04,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:59:04,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093123729] [2023-08-31 20:59:04,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:59:04,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:59:04,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:59:04,320 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:59:04,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:59:04,350 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:59:04,350 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:59:04,350 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:59:04,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:59:04,351 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:59:04,352 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:59:04,352 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:59:04,352 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:59:04,407 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:59:04,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 896 places, 960 transitions, 2148 flow [2023-08-31 20:59:48,055 INFO L130 PetriNetUnfolder]: 24713/103836 cut-off events. [2023-08-31 20:59:48,056 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:59:59,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128527 conditions, 103836 events. 24713/103836 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 1438656 event pairs, 16398 based on Foata normal form. 0/91299 useless extension candidates. Maximal degree in co-relation 62839. Up to 24576 conditions per place. [2023-08-31 20:59:59,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 896 places, 960 transitions, 2148 flow [2023-08-31 21:00:02,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 895 places, 959 transitions, 2146 flow [2023-08-31 21:00:02,893 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 21:00:02,893 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 895 places, 959 transitions, 2146 flow [2023-08-31 21:00:02,893 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 895 places, 959 transitions, 2146 flow [2023-08-31 21:00:02,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 895 places, 959 transitions, 2146 flow [2023-08-31 21:00:55,061 INFO L130 PetriNetUnfolder]: 24713/103835 cut-off events. [2023-08-31 21:00:55,061 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 21:01:06,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128526 conditions, 103835 events. 24713/103835 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1324. Compared 1433025 event pairs, 16398 based on Foata normal form. 0/91299 useless extension candidates. Maximal degree in co-relation 62838. Up to 24576 conditions per place. [2023-08-31 21:01:24,681 INFO L119 LiptonReduction]: Number of co-enabled transitions 760104 [2023-08-31 21:01:30,447 INFO L134 LiptonReduction]: Checked pairs total: 4797784 [2023-08-31 21:01:30,447 INFO L136 LiptonReduction]: Total number of compositions: 389 [2023-08-31 21:01:30,449 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 21:01:30,449 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;@3205cd99, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 21:01:30,449 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 21:01:30,596 INFO L130 PetriNetUnfolder]: 102/1052 cut-off events. [2023-08-31 21:01:30,596 INFO L131 PetriNetUnfolder]: For 427/427 co-relation queries the response was YES. [2023-08-31 21:01:30,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 21:01:30,596 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 21:01:30,596 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 21:01:30,596 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 21:01:30,597 INFO L85 PathProgramCache]: Analyzing trace with hash 732902336, now seen corresponding path program 1 times [2023-08-31 21:01:30,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 21:01:30,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203711450] [2023-08-31 21:01:30,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 21:01:30,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 21:01:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:01:30,618 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 21:01:30,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 21:01:30,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 21:01:30,643 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 21:01:30,643 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 21:01:30,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 21:01:30,643 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 21:01:30,644 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 21:01:30,644 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 21:01:30,644 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 21:01:30,706 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 21:01:30,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 962 places, 1031 transitions, 2322 flow