./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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_22-deref_read_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 06:41:25,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 06:41:25,827 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 06:41:25,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 06:41:25,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 06:41:25,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 06:41:25,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 06:41:25,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 06:41:25,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 06:41:25,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 06:41:25,872 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 06:41:25,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 06:41:25,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 06:41:25,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 06:41:25,879 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 06:41:25,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 06:41:25,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 06:41:25,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 06:41:25,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 06:41:25,891 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 06:41:25,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 06:41:25,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 06:41:25,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 06:41:25,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 06:41:25,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 06:41:25,908 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 06:41:25,908 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 06:41:25,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 06:41:25,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 06:41:25,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 06:41:25,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 06:41:25,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 06:41:25,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 06:41:25,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 06:41:25,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 06:41:25,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 06:41:25,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 06:41:25,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 06:41:25,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 06:41:25,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 06:41:25,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 06:41:25,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 06:41:25,954 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 06:41:25,955 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 06:41:25,956 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 06:41:25,956 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 06:41:25,957 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 06:41:25,957 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 06:41:25,958 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 06:41:25,958 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 06:41:25,958 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 06:41:25,958 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 06:41:25,959 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 06:41:25,959 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 06:41:25,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 06:41:25,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 06:41:25,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 06:41:25,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 06:41:25,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 06:41:25,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 06:41:25,961 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 06:41:25,961 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 06:41:25,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 06:41:25,961 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 06:41:25,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 06:41:25,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 06:41:25,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 06:41:25,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 06:41:25,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:41:25,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 06:41:25,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 06:41:25,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 06:41:25,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 06:41:25,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 06:41:25,964 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 06:41:25,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 06:41:25,965 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 06:41:25,965 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 06:41:25,965 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 06:41:25,965 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 06:41:26,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 06:41:26,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 06:41:26,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 06:41:26,310 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 06:41:26,310 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 06:41:26,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-09-01 06:41:27,656 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 06:41:27,915 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 06:41:27,915 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-09-01 06:41:27,925 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2bdc38df/61d98c71d35d4467a1e52c8773270100/FLAG67861125e [2023-09-01 06:41:27,949 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d2bdc38df/61d98c71d35d4467a1e52c8773270100 [2023-09-01 06:41:27,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 06:41:27,953 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 06:41:27,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 06:41:27,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 06:41:27,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 06:41:27,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:41:27" (1/1) ... [2023-09-01 06:41:27,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441b95fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:41:27, skipping insertion in model container [2023-09-01 06:41:27,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 06:41:27" (1/1) ... [2023-09-01 06:41:27,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 06:41:28,011 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 06:41:28,221 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_22-deref_read_racefree.i[30176,30189] [2023-09-01 06:41:28,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:41:28,247 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 06:41:28,274 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_22-deref_read_racefree.i[30176,30189] [2023-09-01 06:41:28,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 06:41:28,326 INFO L208 MainTranslator]: Completed translation [2023-09-01 06:41:28,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:41:28 WrapperNode [2023-09-01 06:41:28,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 06:41:28,328 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 06:41:28,328 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 06:41:28,328 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 06:41:28,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:41:28" (1/1) ... [2023-09-01 06:41:28,349 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:41:28" (1/1) ... [2023-09-01 06:41:28,372 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2023-09-01 06:41:28,372 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 06:41:28,373 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 06:41:28,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 06:41:28,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 06:41:28,382 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:41:28" (1/1) ... [2023-09-01 06:41:28,382 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:41:28" (1/1) ... [2023-09-01 06:41:28,390 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:41:28" (1/1) ... [2023-09-01 06:41:28,390 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:41:28" (1/1) ... [2023-09-01 06:41:28,397 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:41:28" (1/1) ... [2023-09-01 06:41:28,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:41:28" (1/1) ... [2023-09-01 06:41:28,401 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:41:28" (1/1) ... [2023-09-01 06:41:28,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:41:28" (1/1) ... [2023-09-01 06:41:28,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 06:41:28,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 06:41:28,416 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 06:41:28,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 06:41:28,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:41:28" (1/1) ... [2023-09-01 06:41:28,423 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 06:41:28,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 06:41:28,450 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 06:41:28,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 06:41:28,482 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 06:41:28,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 06:41:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 06:41:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 06:41:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 06:41:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 06:41:28,486 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 06:41:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 06:41:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 06:41:28,486 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 06:41:28,486 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 06:41:28,487 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 06:41:28,631 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 06:41:28,646 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 06:41:28,868 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 06:41:28,876 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 06:41:28,876 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-09-01 06:41:28,878 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:41:28 BoogieIcfgContainer [2023-09-01 06:41:28,878 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 06:41:28,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 06:41:28,880 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 06:41:28,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 06:41:28,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 06:41:27" (1/3) ... [2023-09-01 06:41:28,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760e9280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:41:28, skipping insertion in model container [2023-09-01 06:41:28,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 06:41:28" (2/3) ... [2023-09-01 06:41:28,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760e9280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 06:41:28, skipping insertion in model container [2023-09-01 06:41:28,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 06:41:28" (3/3) ... [2023-09-01 06:41:28,885 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2023-09-01 06:41:28,892 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 06:41:28,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 06:41:28,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-09-01 06:41:28,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 06:41:28,968 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:41:29,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 111 transitions, 227 flow [2023-09-01 06:41:29,082 INFO L130 PetriNetUnfolder]: 14/141 cut-off events. [2023-09-01 06:41:29,082 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:41:29,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 141 events. 14/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 334 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2023-09-01 06:41:29,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 104 places, 111 transitions, 227 flow [2023-09-01 06:41:29,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 111 transitions, 227 flow [2023-09-01 06:41:29,099 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:41:29,112 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 111 transitions, 227 flow [2023-09-01 06:41:29,114 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 111 transitions, 227 flow [2023-09-01 06:41:29,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 111 transitions, 227 flow [2023-09-01 06:41:29,148 INFO L130 PetriNetUnfolder]: 14/141 cut-off events. [2023-09-01 06:41:29,155 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:41:29,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146 conditions, 141 events. 14/141 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 334 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 79. Up to 4 conditions per place. [2023-09-01 06:41:29,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 3200 [2023-09-01 06:41:32,097 INFO L134 LiptonReduction]: Checked pairs total: 6065 [2023-09-01 06:41:32,098 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-09-01 06:41:32,111 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:41:32,115 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:41:32,116 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:41:32,121 INFO L130 PetriNetUnfolder]: 2/22 cut-off events. [2023-09-01 06:41:32,122 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 06:41:32,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:41:32,123 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 06:41:32,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:41:32,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:41:32,127 INFO L85 PathProgramCache]: Analyzing trace with hash 21584508, now seen corresponding path program 1 times [2023-09-01 06:41:32,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:41:32,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466197699] [2023-09-01 06:41:32,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:41:32,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:41:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:32,249 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:41:32,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:32,331 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:41:32,333 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:41:32,335 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:41:32,337 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 06:41:32,338 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:41:32,343 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:41:32,344 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:41:32,344 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 06:41:32,371 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:41:32,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 152 transitions, 316 flow [2023-09-01 06:41:32,434 INFO L130 PetriNetUnfolder]: 24/221 cut-off events. [2023-09-01 06:41:32,435 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 06:41:32,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 221 events. 24/221 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 649 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 142. Up to 6 conditions per place. [2023-09-01 06:41:32,438 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 152 transitions, 316 flow [2023-09-01 06:41:32,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 141 places, 152 transitions, 316 flow [2023-09-01 06:41:32,440 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:41:32,440 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 141 places, 152 transitions, 316 flow [2023-09-01 06:41:32,440 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 141 places, 152 transitions, 316 flow [2023-09-01 06:41:32,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 152 transitions, 316 flow [2023-09-01 06:41:32,462 INFO L130 PetriNetUnfolder]: 24/221 cut-off events. [2023-09-01 06:41:32,463 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 06:41:32,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231 conditions, 221 events. 24/221 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 649 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 142. Up to 6 conditions per place. [2023-09-01 06:41:32,470 INFO L119 LiptonReduction]: Number of co-enabled transitions 9680 [2023-09-01 06:41:35,220 INFO L134 LiptonReduction]: Checked pairs total: 21045 [2023-09-01 06:41:35,220 INFO L136 LiptonReduction]: Total number of compositions: 134 [2023-09-01 06:41:35,222 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:41:35,223 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:41:35,224 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:41:35,229 INFO L130 PetriNetUnfolder]: 10/55 cut-off events. [2023-09-01 06:41:35,229 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 06:41:35,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:41:35,229 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 06:41:35,230 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:41:35,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:41:35,230 INFO L85 PathProgramCache]: Analyzing trace with hash -491590897, now seen corresponding path program 1 times [2023-09-01 06:41:35,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:41:35,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551322327] [2023-09-01 06:41:35,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:41:35,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:41:35,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:35,286 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:41:35,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:35,321 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:41:35,321 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:41:35,321 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:41:35,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 06:41:35,322 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:41:35,323 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:41:35,323 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:41:35,323 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 06:41:35,345 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:41:35,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 193 transitions, 407 flow [2023-09-01 06:41:35,381 INFO L130 PetriNetUnfolder]: 34/301 cut-off events. [2023-09-01 06:41:35,381 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 06:41:35,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 301 events. 34/301 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 954 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 225. Up to 8 conditions per place. [2023-09-01 06:41:35,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 193 transitions, 407 flow [2023-09-01 06:41:35,387 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 193 transitions, 407 flow [2023-09-01 06:41:35,387 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:41:35,387 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 193 transitions, 407 flow [2023-09-01 06:41:35,388 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 193 transitions, 407 flow [2023-09-01 06:41:35,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 193 transitions, 407 flow [2023-09-01 06:41:35,417 INFO L130 PetriNetUnfolder]: 34/301 cut-off events. [2023-09-01 06:41:35,417 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 06:41:35,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317 conditions, 301 events. 34/301 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 954 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 225. Up to 8 conditions per place. [2023-09-01 06:41:35,431 INFO L119 LiptonReduction]: Number of co-enabled transitions 19440 [2023-09-01 06:41:38,525 INFO L134 LiptonReduction]: Checked pairs total: 45807 [2023-09-01 06:41:38,526 INFO L136 LiptonReduction]: Total number of compositions: 163 [2023-09-01 06:41:38,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:41:38,528 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:41:38,529 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:41:38,539 INFO L130 PetriNetUnfolder]: 18/89 cut-off events. [2023-09-01 06:41:38,540 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 06:41:38,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:41:38,540 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 06:41:38,546 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:41:38,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:41:38,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1802068809, now seen corresponding path program 1 times [2023-09-01 06:41:38,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:41:38,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228738160] [2023-09-01 06:41:38,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:41:38,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:41:38,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:38,594 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:41:38,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:38,636 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:41:38,638 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:41:38,638 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:41:38,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 06:41:38,639 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:41:38,639 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:41:38,639 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:41:38,640 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 06:41:38,671 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:41:38,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 234 transitions, 500 flow [2023-09-01 06:41:38,730 INFO L130 PetriNetUnfolder]: 44/381 cut-off events. [2023-09-01 06:41:38,730 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 06:41:38,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 381 events. 44/381 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1267 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 309. Up to 10 conditions per place. [2023-09-01 06:41:38,736 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 234 transitions, 500 flow [2023-09-01 06:41:38,740 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 234 transitions, 500 flow [2023-09-01 06:41:38,740 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:41:38,740 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 215 places, 234 transitions, 500 flow [2023-09-01 06:41:38,740 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 215 places, 234 transitions, 500 flow [2023-09-01 06:41:38,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 215 places, 234 transitions, 500 flow [2023-09-01 06:41:38,788 INFO L130 PetriNetUnfolder]: 44/381 cut-off events. [2023-09-01 06:41:38,788 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 06:41:38,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 381 events. 44/381 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1267 event pairs, 0 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 309. Up to 10 conditions per place. [2023-09-01 06:41:38,809 INFO L119 LiptonReduction]: Number of co-enabled transitions 32480 [2023-09-01 06:41:42,003 INFO L134 LiptonReduction]: Checked pairs total: 76822 [2023-09-01 06:41:42,003 INFO L136 LiptonReduction]: Total number of compositions: 191 [2023-09-01 06:41:42,005 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:41:42,006 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:41:42,006 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:41:42,016 INFO L130 PetriNetUnfolder]: 26/125 cut-off events. [2023-09-01 06:41:42,017 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 06:41:42,017 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:41:42,017 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 06:41:42,017 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:41:42,018 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:41:42,018 INFO L85 PathProgramCache]: Analyzing trace with hash -825447774, now seen corresponding path program 1 times [2023-09-01 06:41:42,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:41:42,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77188264] [2023-09-01 06:41:42,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:41:42,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:41:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:42,057 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:41:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:42,097 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:41:42,098 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:41:42,099 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:41:42,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 06:41:42,099 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:41:42,100 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:41:42,100 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:41:42,100 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 06:41:42,127 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:41:42,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 275 transitions, 595 flow [2023-09-01 06:41:42,189 INFO L130 PetriNetUnfolder]: 54/461 cut-off events. [2023-09-01 06:41:42,190 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 06:41:42,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 461 events. 54/461 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1565 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 394. Up to 12 conditions per place. [2023-09-01 06:41:42,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 252 places, 275 transitions, 595 flow [2023-09-01 06:41:42,202 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 275 transitions, 595 flow [2023-09-01 06:41:42,202 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:41:42,202 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 275 transitions, 595 flow [2023-09-01 06:41:42,203 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 275 transitions, 595 flow [2023-09-01 06:41:42,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 275 transitions, 595 flow [2023-09-01 06:41:42,263 INFO L130 PetriNetUnfolder]: 54/461 cut-off events. [2023-09-01 06:41:42,264 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 06:41:42,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 461 events. 54/461 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1565 event pairs, 0 based on Foata normal form. 0/371 useless extension candidates. Maximal degree in co-relation 394. Up to 12 conditions per place. [2023-09-01 06:41:42,302 INFO L119 LiptonReduction]: Number of co-enabled transitions 48800 [2023-09-01 06:41:45,752 INFO L134 LiptonReduction]: Checked pairs total: 116511 [2023-09-01 06:41:45,752 INFO L136 LiptonReduction]: Total number of compositions: 227 [2023-09-01 06:41:45,757 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:41:45,757 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:41:45,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:41:45,773 INFO L130 PetriNetUnfolder]: 34/157 cut-off events. [2023-09-01 06:41:45,773 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 06:41:45,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:41:45,774 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:41:45,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:41:45,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:41:45,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1254540260, now seen corresponding path program 1 times [2023-09-01 06:41:45,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:41:45,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969366796] [2023-09-01 06:41:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:41:45,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:41:45,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:45,797 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:41:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:45,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:41:45,817 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:41:45,817 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:41:45,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 06:41:45,817 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:41:45,818 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:41:45,818 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:41:45,818 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 06:41:45,840 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:41:45,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 316 transitions, 692 flow [2023-09-01 06:41:45,931 INFO L130 PetriNetUnfolder]: 64/541 cut-off events. [2023-09-01 06:41:45,932 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 06:41:45,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 541 events. 64/541 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1872 event pairs, 0 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 480. Up to 14 conditions per place. [2023-09-01 06:41:45,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 289 places, 316 transitions, 692 flow [2023-09-01 06:41:45,950 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 289 places, 316 transitions, 692 flow [2023-09-01 06:41:45,953 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:41:45,954 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 289 places, 316 transitions, 692 flow [2023-09-01 06:41:45,954 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 289 places, 316 transitions, 692 flow [2023-09-01 06:41:45,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 289 places, 316 transitions, 692 flow [2023-09-01 06:41:46,056 INFO L130 PetriNetUnfolder]: 64/541 cut-off events. [2023-09-01 06:41:46,057 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 06:41:46,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 541 events. 64/541 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1872 event pairs, 0 based on Foata normal form. 0/434 useless extension candidates. Maximal degree in co-relation 480. Up to 14 conditions per place. [2023-09-01 06:41:46,084 INFO L119 LiptonReduction]: Number of co-enabled transitions 68400 [2023-09-01 06:41:49,975 INFO L134 LiptonReduction]: Checked pairs total: 183949 [2023-09-01 06:41:49,975 INFO L136 LiptonReduction]: Total number of compositions: 252 [2023-09-01 06:41:49,976 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:41:49,977 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:41:49,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:41:49,993 INFO L130 PetriNetUnfolder]: 42/191 cut-off events. [2023-09-01 06:41:49,993 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 06:41:49,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:41:49,994 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:41:49,994 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:41:49,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:41:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1873667391, now seen corresponding path program 1 times [2023-09-01 06:41:49,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:41:49,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017810384] [2023-09-01 06:41:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:41:49,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:41:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:50,029 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:41:50,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:50,072 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:41:50,076 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:41:50,077 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:41:50,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 06:41:50,077 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:41:50,078 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:41:50,080 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:41:50,080 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 06:41:50,107 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:41:50,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 357 transitions, 791 flow [2023-09-01 06:41:50,230 INFO L130 PetriNetUnfolder]: 74/621 cut-off events. [2023-09-01 06:41:50,231 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 06:41:50,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 621 events. 74/621 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 2190 event pairs, 0 based on Foata normal form. 0/497 useless extension candidates. Maximal degree in co-relation 567. Up to 16 conditions per place. [2023-09-01 06:41:50,240 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 357 transitions, 791 flow [2023-09-01 06:41:50,246 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 326 places, 357 transitions, 791 flow [2023-09-01 06:41:50,246 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:41:50,246 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 326 places, 357 transitions, 791 flow [2023-09-01 06:41:50,247 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 326 places, 357 transitions, 791 flow [2023-09-01 06:41:50,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 357 transitions, 791 flow [2023-09-01 06:41:50,342 INFO L130 PetriNetUnfolder]: 74/621 cut-off events. [2023-09-01 06:41:50,342 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 06:41:50,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 671 conditions, 621 events. 74/621 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 2190 event pairs, 0 based on Foata normal form. 0/497 useless extension candidates. Maximal degree in co-relation 567. Up to 16 conditions per place. [2023-09-01 06:41:50,390 INFO L119 LiptonReduction]: Number of co-enabled transitions 91280 [2023-09-01 06:41:54,520 INFO L134 LiptonReduction]: Checked pairs total: 224655 [2023-09-01 06:41:54,520 INFO L136 LiptonReduction]: Total number of compositions: 289 [2023-09-01 06:41:54,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:41:54,522 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:41:54,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:41:54,545 INFO L130 PetriNetUnfolder]: 50/227 cut-off events. [2023-09-01 06:41:54,545 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 06:41:54,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:41:54,545 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:41:54,545 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:41:54,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:41:54,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1277274103, now seen corresponding path program 1 times [2023-09-01 06:41:54,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:41:54,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935087290] [2023-09-01 06:41:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:41:54,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:41:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:54,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:41:54,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:54,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:41:54,587 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:41:54,587 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:41:54,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 06:41:54,588 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:41:54,588 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:41:54,589 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:41:54,589 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 06:41:54,614 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:41:54,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 398 transitions, 892 flow [2023-09-01 06:41:54,748 INFO L130 PetriNetUnfolder]: 84/701 cut-off events. [2023-09-01 06:41:54,749 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 06:41:54,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 701 events. 84/701 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 2493 event pairs, 0 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 655. Up to 18 conditions per place. [2023-09-01 06:41:54,774 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 398 transitions, 892 flow [2023-09-01 06:41:54,784 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 398 transitions, 892 flow [2023-09-01 06:41:54,784 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:41:54,785 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 363 places, 398 transitions, 892 flow [2023-09-01 06:41:54,785 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 363 places, 398 transitions, 892 flow [2023-09-01 06:41:54,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 398 transitions, 892 flow [2023-09-01 06:41:54,922 INFO L130 PetriNetUnfolder]: 84/701 cut-off events. [2023-09-01 06:41:54,922 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 06:41:54,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 701 events. 84/701 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 2493 event pairs, 0 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 655. Up to 18 conditions per place. [2023-09-01 06:41:54,991 INFO L119 LiptonReduction]: Number of co-enabled transitions 117440 [2023-09-01 06:41:59,107 INFO L134 LiptonReduction]: Checked pairs total: 292856 [2023-09-01 06:41:59,107 INFO L136 LiptonReduction]: Total number of compositions: 312 [2023-09-01 06:41:59,109 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:41:59,109 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:41:59,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:41:59,135 INFO L130 PetriNetUnfolder]: 58/261 cut-off events. [2023-09-01 06:41:59,135 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 06:41:59,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:41:59,135 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:41:59,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:41:59,136 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:41:59,136 INFO L85 PathProgramCache]: Analyzing trace with hash 2083466334, now seen corresponding path program 1 times [2023-09-01 06:41:59,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:41:59,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445437833] [2023-09-01 06:41:59,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:41:59,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:41:59,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:59,156 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:41:59,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:41:59,175 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:41:59,175 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:41:59,175 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:41:59,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 06:41:59,176 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:41:59,176 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:41:59,176 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:41:59,176 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 06:41:59,203 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:41:59,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 400 places, 439 transitions, 995 flow [2023-09-01 06:41:59,381 INFO L130 PetriNetUnfolder]: 94/781 cut-off events. [2023-09-01 06:41:59,382 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 06:41:59,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 781 events. 94/781 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 2831 event pairs, 0 based on Foata normal form. 0/623 useless extension candidates. Maximal degree in co-relation 744. Up to 20 conditions per place. [2023-09-01 06:41:59,400 INFO L82 GeneralOperation]: Start removeDead. Operand has 400 places, 439 transitions, 995 flow [2023-09-01 06:41:59,406 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 400 places, 439 transitions, 995 flow [2023-09-01 06:41:59,406 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:41:59,407 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 400 places, 439 transitions, 995 flow [2023-09-01 06:41:59,408 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 400 places, 439 transitions, 995 flow [2023-09-01 06:41:59,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 400 places, 439 transitions, 995 flow [2023-09-01 06:41:59,555 INFO L130 PetriNetUnfolder]: 94/781 cut-off events. [2023-09-01 06:41:59,555 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 06:41:59,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 781 events. 94/781 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 2831 event pairs, 0 based on Foata normal form. 0/623 useless extension candidates. Maximal degree in co-relation 744. Up to 20 conditions per place. [2023-09-01 06:41:59,633 INFO L119 LiptonReduction]: Number of co-enabled transitions 146880 [2023-09-01 06:42:04,203 INFO L134 LiptonReduction]: Checked pairs total: 365923 [2023-09-01 06:42:04,204 INFO L136 LiptonReduction]: Total number of compositions: 351 [2023-09-01 06:42:04,205 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:04,206 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:04,206 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:04,248 INFO L130 PetriNetUnfolder]: 66/293 cut-off events. [2023-09-01 06:42:04,249 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 06:42:04,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:04,249 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:04,249 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:04,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:04,250 INFO L85 PathProgramCache]: Analyzing trace with hash 461687478, now seen corresponding path program 1 times [2023-09-01 06:42:04,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:04,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031367871] [2023-09-01 06:42:04,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:04,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:04,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:04,270 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:04,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:04,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:04,292 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:04,292 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:04,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 06:42:04,293 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:04,293 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:04,293 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:04,293 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 06:42:04,322 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:42:04,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 437 places, 480 transitions, 1100 flow [2023-09-01 06:42:04,506 INFO L130 PetriNetUnfolder]: 104/861 cut-off events. [2023-09-01 06:42:04,507 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 06:42:04,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 861 events. 104/861 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 3088 event pairs, 0 based on Foata normal form. 0/686 useless extension candidates. Maximal degree in co-relation 834. Up to 22 conditions per place. [2023-09-01 06:42:04,535 INFO L82 GeneralOperation]: Start removeDead. Operand has 437 places, 480 transitions, 1100 flow [2023-09-01 06:42:04,545 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 437 places, 480 transitions, 1100 flow [2023-09-01 06:42:04,545 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:04,545 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 437 places, 480 transitions, 1100 flow [2023-09-01 06:42:04,545 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 437 places, 480 transitions, 1100 flow [2023-09-01 06:42:04,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 437 places, 480 transitions, 1100 flow [2023-09-01 06:42:04,722 INFO L130 PetriNetUnfolder]: 104/861 cut-off events. [2023-09-01 06:42:04,722 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 06:42:04,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 947 conditions, 861 events. 104/861 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 3088 event pairs, 0 based on Foata normal form. 0/686 useless extension candidates. Maximal degree in co-relation 834. Up to 22 conditions per place. [2023-09-01 06:42:04,796 INFO L119 LiptonReduction]: Number of co-enabled transitions 179600 [2023-09-01 06:42:09,518 INFO L134 LiptonReduction]: Checked pairs total: 464213 [2023-09-01 06:42:09,518 INFO L136 LiptonReduction]: Total number of compositions: 371 [2023-09-01 06:42:09,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:09,520 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:09,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:09,550 INFO L130 PetriNetUnfolder]: 74/329 cut-off events. [2023-09-01 06:42:09,551 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 06:42:09,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:09,551 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:09,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:09,552 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:09,552 INFO L85 PathProgramCache]: Analyzing trace with hash 2132305502, now seen corresponding path program 1 times [2023-09-01 06:42:09,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:09,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474114011] [2023-09-01 06:42:09,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:09,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:09,582 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:09,628 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:09,629 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:09,629 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:09,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 06:42:09,629 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:09,630 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:09,630 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:09,630 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 06:42:09,660 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:42:09,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 474 places, 521 transitions, 1207 flow [2023-09-01 06:42:09,862 INFO L130 PetriNetUnfolder]: 114/941 cut-off events. [2023-09-01 06:42:09,863 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 06:42:09,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 941 events. 114/941 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 3390 event pairs, 0 based on Foata normal form. 0/749 useless extension candidates. Maximal degree in co-relation 926. Up to 24 conditions per place. [2023-09-01 06:42:09,886 INFO L82 GeneralOperation]: Start removeDead. Operand has 474 places, 521 transitions, 1207 flow [2023-09-01 06:42:09,895 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 474 places, 521 transitions, 1207 flow [2023-09-01 06:42:09,896 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:09,896 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 474 places, 521 transitions, 1207 flow [2023-09-01 06:42:09,896 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 474 places, 521 transitions, 1207 flow [2023-09-01 06:42:09,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 474 places, 521 transitions, 1207 flow [2023-09-01 06:42:10,103 INFO L130 PetriNetUnfolder]: 114/941 cut-off events. [2023-09-01 06:42:10,103 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 06:42:10,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 941 events. 114/941 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 3390 event pairs, 0 based on Foata normal form. 0/749 useless extension candidates. Maximal degree in co-relation 926. Up to 24 conditions per place. [2023-09-01 06:42:10,166 INFO L119 LiptonReduction]: Number of co-enabled transitions 215600 [2023-09-01 06:42:15,355 INFO L134 LiptonReduction]: Checked pairs total: 562403 [2023-09-01 06:42:15,355 INFO L136 LiptonReduction]: Total number of compositions: 410 [2023-09-01 06:42:15,356 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:15,356 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:15,356 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:15,414 INFO L130 PetriNetUnfolder]: 82/363 cut-off events. [2023-09-01 06:42:15,415 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 06:42:15,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:15,415 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:15,415 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:15,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:15,417 INFO L85 PathProgramCache]: Analyzing trace with hash -679034099, now seen corresponding path program 1 times [2023-09-01 06:42:15,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:15,418 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480104444] [2023-09-01 06:42:15,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:15,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:15,453 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:15,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:15,486 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:15,486 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:15,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 06:42:15,487 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:15,487 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:15,487 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:15,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 06:42:15,529 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:42:15,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 511 places, 562 transitions, 1316 flow [2023-09-01 06:42:15,754 INFO L130 PetriNetUnfolder]: 124/1021 cut-off events. [2023-09-01 06:42:15,754 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 06:42:15,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1136 conditions, 1021 events. 124/1021 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 3729 event pairs, 0 based on Foata normal form. 0/812 useless extension candidates. Maximal degree in co-relation 1020. Up to 26 conditions per place. [2023-09-01 06:42:15,788 INFO L82 GeneralOperation]: Start removeDead. Operand has 511 places, 562 transitions, 1316 flow [2023-09-01 06:42:15,797 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 511 places, 562 transitions, 1316 flow [2023-09-01 06:42:15,797 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:15,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 511 places, 562 transitions, 1316 flow [2023-09-01 06:42:15,798 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 511 places, 562 transitions, 1316 flow [2023-09-01 06:42:15,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 511 places, 562 transitions, 1316 flow [2023-09-01 06:42:16,001 INFO L130 PetriNetUnfolder]: 124/1021 cut-off events. [2023-09-01 06:42:16,001 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 06:42:16,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1136 conditions, 1021 events. 124/1021 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 3729 event pairs, 0 based on Foata normal form. 0/812 useless extension candidates. Maximal degree in co-relation 1020. Up to 26 conditions per place. [2023-09-01 06:42:16,085 INFO L119 LiptonReduction]: Number of co-enabled transitions 254880 [2023-09-01 06:42:21,718 INFO L134 LiptonReduction]: Checked pairs total: 745194 [2023-09-01 06:42:21,719 INFO L136 LiptonReduction]: Total number of compositions: 437 [2023-09-01 06:42:21,720 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:21,721 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:21,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:21,767 INFO L130 PetriNetUnfolder]: 90/397 cut-off events. [2023-09-01 06:42:21,768 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 06:42:21,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:21,768 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:21,768 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:21,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:21,769 INFO L85 PathProgramCache]: Analyzing trace with hash -207287171, now seen corresponding path program 1 times [2023-09-01 06:42:21,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:21,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233405875] [2023-09-01 06:42:21,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:21,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:21,805 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:21,836 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:21,836 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:21,837 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:21,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 06:42:21,838 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:21,841 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:21,841 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:21,841 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 06:42:21,882 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:42:21,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 548 places, 603 transitions, 1427 flow [2023-09-01 06:42:22,208 INFO L130 PetriNetUnfolder]: 134/1101 cut-off events. [2023-09-01 06:42:22,208 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 06:42:22,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1232 conditions, 1101 events. 134/1101 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4001 event pairs, 0 based on Foata normal form. 0/875 useless extension candidates. Maximal degree in co-relation 1115. Up to 28 conditions per place. [2023-09-01 06:42:22,238 INFO L82 GeneralOperation]: Start removeDead. Operand has 548 places, 603 transitions, 1427 flow [2023-09-01 06:42:22,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 548 places, 603 transitions, 1427 flow [2023-09-01 06:42:22,247 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:22,247 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 548 places, 603 transitions, 1427 flow [2023-09-01 06:42:22,248 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 548 places, 603 transitions, 1427 flow [2023-09-01 06:42:22,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 548 places, 603 transitions, 1427 flow [2023-09-01 06:42:22,482 INFO L130 PetriNetUnfolder]: 134/1101 cut-off events. [2023-09-01 06:42:22,483 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 06:42:22,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1232 conditions, 1101 events. 134/1101 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4001 event pairs, 0 based on Foata normal form. 0/875 useless extension candidates. Maximal degree in co-relation 1115. Up to 28 conditions per place. [2023-09-01 06:42:22,657 INFO L119 LiptonReduction]: Number of co-enabled transitions 297440 [2023-09-01 06:42:28,628 INFO L134 LiptonReduction]: Checked pairs total: 776988 [2023-09-01 06:42:28,628 INFO L136 LiptonReduction]: Total number of compositions: 479 [2023-09-01 06:42:28,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:28,630 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:28,630 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:28,685 INFO L130 PetriNetUnfolder]: 98/431 cut-off events. [2023-09-01 06:42:28,685 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 06:42:28,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:28,685 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:28,685 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:28,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:28,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1147612056, now seen corresponding path program 1 times [2023-09-01 06:42:28,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:28,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210239749] [2023-09-01 06:42:28,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:28,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:28,713 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:28,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:28,741 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:28,741 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:28,742 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:28,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 06:42:28,742 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:28,743 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:28,743 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:28,743 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 06:42:28,781 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:42:28,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 585 places, 644 transitions, 1540 flow [2023-09-01 06:42:29,108 INFO L130 PetriNetUnfolder]: 144/1181 cut-off events. [2023-09-01 06:42:29,108 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 06:42:29,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 1181 events. 144/1181 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4290 event pairs, 0 based on Foata normal form. 0/938 useless extension candidates. Maximal degree in co-relation 1211. Up to 30 conditions per place. [2023-09-01 06:42:29,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 585 places, 644 transitions, 1540 flow [2023-09-01 06:42:29,153 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 585 places, 644 transitions, 1540 flow [2023-09-01 06:42:29,153 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:29,153 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 585 places, 644 transitions, 1540 flow [2023-09-01 06:42:29,154 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 585 places, 644 transitions, 1540 flow [2023-09-01 06:42:29,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 585 places, 644 transitions, 1540 flow [2023-09-01 06:42:29,399 INFO L130 PetriNetUnfolder]: 144/1181 cut-off events. [2023-09-01 06:42:29,400 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 06:42:29,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 1181 events. 144/1181 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4290 event pairs, 0 based on Foata normal form. 0/938 useless extension candidates. Maximal degree in co-relation 1211. Up to 30 conditions per place. [2023-09-01 06:42:29,581 INFO L119 LiptonReduction]: Number of co-enabled transitions 343280 [2023-09-01 06:42:35,860 INFO L134 LiptonReduction]: Checked pairs total: 895816 [2023-09-01 06:42:35,861 INFO L136 LiptonReduction]: Total number of compositions: 504 [2023-09-01 06:42:35,862 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:35,862 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:35,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:35,911 INFO L130 PetriNetUnfolder]: 106/465 cut-off events. [2023-09-01 06:42:35,911 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 06:42:35,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:35,911 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:35,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:35,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:35,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1395172772, now seen corresponding path program 1 times [2023-09-01 06:42:35,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:35,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890635117] [2023-09-01 06:42:35,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:35,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:35,940 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:35,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:35,969 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:35,969 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:35,969 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:35,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 06:42:35,970 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:35,970 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:35,970 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:35,970 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-09-01 06:42:36,014 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:42:36,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 622 places, 685 transitions, 1655 flow [2023-09-01 06:42:36,360 INFO L130 PetriNetUnfolder]: 154/1261 cut-off events. [2023-09-01 06:42:36,361 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 06:42:36,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1427 conditions, 1261 events. 154/1261 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4624 event pairs, 0 based on Foata normal form. 0/1001 useless extension candidates. Maximal degree in co-relation 1308. Up to 32 conditions per place. [2023-09-01 06:42:36,392 INFO L82 GeneralOperation]: Start removeDead. Operand has 622 places, 685 transitions, 1655 flow [2023-09-01 06:42:36,401 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 622 places, 685 transitions, 1655 flow [2023-09-01 06:42:36,401 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:36,401 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 622 places, 685 transitions, 1655 flow [2023-09-01 06:42:36,401 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 622 places, 685 transitions, 1655 flow [2023-09-01 06:42:36,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 622 places, 685 transitions, 1655 flow [2023-09-01 06:42:36,703 INFO L130 PetriNetUnfolder]: 154/1261 cut-off events. [2023-09-01 06:42:36,703 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 06:42:36,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1427 conditions, 1261 events. 154/1261 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4624 event pairs, 0 based on Foata normal form. 0/1001 useless extension candidates. Maximal degree in co-relation 1308. Up to 32 conditions per place. [2023-09-01 06:42:36,859 INFO L119 LiptonReduction]: Number of co-enabled transitions 392400 [2023-09-01 06:42:43,366 INFO L134 LiptonReduction]: Checked pairs total: 1023872 [2023-09-01 06:42:43,366 INFO L136 LiptonReduction]: Total number of compositions: 531 [2023-09-01 06:42:43,367 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:43,368 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:43,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:43,440 INFO L130 PetriNetUnfolder]: 114/499 cut-off events. [2023-09-01 06:42:43,440 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 06:42:43,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:43,440 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:43,441 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:43,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:43,441 INFO L85 PathProgramCache]: Analyzing trace with hash 124651177, now seen corresponding path program 1 times [2023-09-01 06:42:43,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:43,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544020047] [2023-09-01 06:42:43,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:43,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:43,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:43,473 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:43,517 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:43,517 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:43,519 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:43,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 06:42:43,519 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:43,520 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:43,520 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:43,520 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-09-01 06:42:43,566 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:42:43,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 659 places, 726 transitions, 1772 flow [2023-09-01 06:42:43,929 INFO L130 PetriNetUnfolder]: 164/1341 cut-off events. [2023-09-01 06:42:43,929 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 06:42:43,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 1341 events. 164/1341 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4928 event pairs, 0 based on Foata normal form. 0/1064 useless extension candidates. Maximal degree in co-relation 1406. Up to 34 conditions per place. [2023-09-01 06:42:43,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 659 places, 726 transitions, 1772 flow [2023-09-01 06:42:43,999 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 659 places, 726 transitions, 1772 flow [2023-09-01 06:42:43,999 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:43,999 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 659 places, 726 transitions, 1772 flow [2023-09-01 06:42:43,999 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 659 places, 726 transitions, 1772 flow [2023-09-01 06:42:44,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 659 places, 726 transitions, 1772 flow [2023-09-01 06:42:44,307 INFO L130 PetriNetUnfolder]: 164/1341 cut-off events. [2023-09-01 06:42:44,307 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 06:42:44,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 1341 events. 164/1341 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 4928 event pairs, 0 based on Foata normal form. 0/1064 useless extension candidates. Maximal degree in co-relation 1406. Up to 34 conditions per place. [2023-09-01 06:42:44,437 INFO L119 LiptonReduction]: Number of co-enabled transitions 444800 [2023-09-01 06:42:51,173 INFO L134 LiptonReduction]: Checked pairs total: 1172126 [2023-09-01 06:42:51,173 INFO L136 LiptonReduction]: Total number of compositions: 574 [2023-09-01 06:42:51,175 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:51,175 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:51,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:51,237 INFO L130 PetriNetUnfolder]: 122/533 cut-off events. [2023-09-01 06:42:51,237 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 06:42:51,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:51,238 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:51,238 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:51,238 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:51,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1909203686, now seen corresponding path program 1 times [2023-09-01 06:42:51,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:51,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374457316] [2023-09-01 06:42:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:51,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:51,299 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:51,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:51,329 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:51,330 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:51,330 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:51,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 06:42:51,330 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:51,331 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:51,331 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:51,331 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-09-01 06:42:51,380 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:42:51,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 696 places, 767 transitions, 1891 flow [2023-09-01 06:42:51,805 INFO L130 PetriNetUnfolder]: 174/1421 cut-off events. [2023-09-01 06:42:51,805 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 06:42:51,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1626 conditions, 1421 events. 174/1421 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 5253 event pairs, 0 based on Foata normal form. 0/1127 useless extension candidates. Maximal degree in co-relation 1505. Up to 36 conditions per place. [2023-09-01 06:42:51,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 696 places, 767 transitions, 1891 flow [2023-09-01 06:42:51,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 696 places, 767 transitions, 1891 flow [2023-09-01 06:42:51,868 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:42:51,868 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 696 places, 767 transitions, 1891 flow [2023-09-01 06:42:51,868 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 696 places, 767 transitions, 1891 flow [2023-09-01 06:42:51,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 696 places, 767 transitions, 1891 flow [2023-09-01 06:42:52,226 INFO L130 PetriNetUnfolder]: 174/1421 cut-off events. [2023-09-01 06:42:52,226 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 06:42:52,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1626 conditions, 1421 events. 174/1421 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 5253 event pairs, 0 based on Foata normal form. 0/1127 useless extension candidates. Maximal degree in co-relation 1505. Up to 36 conditions per place. [2023-09-01 06:42:52,498 INFO L119 LiptonReduction]: Number of co-enabled transitions 500480 [2023-09-01 06:42:59,585 INFO L134 LiptonReduction]: Checked pairs total: 1321355 [2023-09-01 06:42:59,585 INFO L136 LiptonReduction]: Total number of compositions: 601 [2023-09-01 06:42:59,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:42:59,586 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:42:59,586 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:42:59,654 INFO L130 PetriNetUnfolder]: 130/567 cut-off events. [2023-09-01 06:42:59,655 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 06:42:59,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:42:59,655 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:42:59,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:42:59,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:42:59,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1044711054, now seen corresponding path program 1 times [2023-09-01 06:42:59,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:42:59,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017223205] [2023-09-01 06:42:59,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:42:59,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:42:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:59,684 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:42:59,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:42:59,714 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:42:59,714 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:42:59,715 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:42:59,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 06:42:59,715 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:42:59,715 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:42:59,716 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:42:59,716 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-09-01 06:42:59,767 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:42:59,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 733 places, 808 transitions, 2012 flow [2023-09-01 06:43:00,159 INFO L130 PetriNetUnfolder]: 184/1501 cut-off events. [2023-09-01 06:43:00,159 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 06:43:00,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 1501 events. 184/1501 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 5547 event pairs, 0 based on Foata normal form. 0/1190 useless extension candidates. Maximal degree in co-relation 1605. Up to 38 conditions per place. [2023-09-01 06:43:00,231 INFO L82 GeneralOperation]: Start removeDead. Operand has 733 places, 808 transitions, 2012 flow [2023-09-01 06:43:00,249 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 733 places, 808 transitions, 2012 flow [2023-09-01 06:43:00,249 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:00,249 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 733 places, 808 transitions, 2012 flow [2023-09-01 06:43:00,250 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 733 places, 808 transitions, 2012 flow [2023-09-01 06:43:00,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 733 places, 808 transitions, 2012 flow [2023-09-01 06:43:00,711 INFO L130 PetriNetUnfolder]: 184/1501 cut-off events. [2023-09-01 06:43:00,712 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 06:43:00,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1727 conditions, 1501 events. 184/1501 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 5547 event pairs, 0 based on Foata normal form. 0/1190 useless extension candidates. Maximal degree in co-relation 1605. Up to 38 conditions per place. [2023-09-01 06:43:00,887 INFO L119 LiptonReduction]: Number of co-enabled transitions 559440 [2023-09-01 06:43:08,333 INFO L134 LiptonReduction]: Checked pairs total: 1460991 [2023-09-01 06:43:08,333 INFO L136 LiptonReduction]: Total number of compositions: 622 [2023-09-01 06:43:08,334 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:43:08,334 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:43:08,334 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:43:08,413 INFO L130 PetriNetUnfolder]: 138/601 cut-off events. [2023-09-01 06:43:08,414 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 06:43:08,414 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:43:08,414 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:43:08,414 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:43:08,414 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:43:08,414 INFO L85 PathProgramCache]: Analyzing trace with hash -209267688, now seen corresponding path program 1 times [2023-09-01 06:43:08,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:43:08,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097220191] [2023-09-01 06:43:08,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:43:08,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:43:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:08,466 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:43:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:08,508 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:43:08,510 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:43:08,510 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:43:08,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 06:43:08,511 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:43:08,511 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:43:08,511 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:43:08,511 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-09-01 06:43:08,560 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:43:08,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 770 places, 849 transitions, 2135 flow [2023-09-01 06:43:09,093 INFO L130 PetriNetUnfolder]: 194/1581 cut-off events. [2023-09-01 06:43:09,094 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 06:43:09,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1829 conditions, 1581 events. 194/1581 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 5842 event pairs, 0 based on Foata normal form. 0/1253 useless extension candidates. Maximal degree in co-relation 1706. Up to 40 conditions per place. [2023-09-01 06:43:09,173 INFO L82 GeneralOperation]: Start removeDead. Operand has 770 places, 849 transitions, 2135 flow [2023-09-01 06:43:09,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 770 places, 849 transitions, 2135 flow [2023-09-01 06:43:09,194 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:09,194 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 770 places, 849 transitions, 2135 flow [2023-09-01 06:43:09,194 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 770 places, 849 transitions, 2135 flow [2023-09-01 06:43:09,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 770 places, 849 transitions, 2135 flow [2023-09-01 06:43:09,677 INFO L130 PetriNetUnfolder]: 194/1581 cut-off events. [2023-09-01 06:43:09,677 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 06:43:09,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1829 conditions, 1581 events. 194/1581 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 5842 event pairs, 0 based on Foata normal form. 0/1253 useless extension candidates. Maximal degree in co-relation 1706. Up to 40 conditions per place. [2023-09-01 06:43:09,835 INFO L119 LiptonReduction]: Number of co-enabled transitions 621680 [2023-09-01 06:43:17,562 INFO L134 LiptonReduction]: Checked pairs total: 1642778 [2023-09-01 06:43:17,562 INFO L136 LiptonReduction]: Total number of compositions: 651 [2023-09-01 06:43:17,564 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:43:17,564 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:43:17,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:43:17,657 INFO L130 PetriNetUnfolder]: 146/635 cut-off events. [2023-09-01 06:43:17,657 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 06:43:17,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:43:17,657 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:43:17,657 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:43:17,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:43:17,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1222489209, now seen corresponding path program 1 times [2023-09-01 06:43:17,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:43:17,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753868367] [2023-09-01 06:43:17,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:43:17,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:43:17,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:17,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:43:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:17,726 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:43:17,726 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:43:17,726 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:43:17,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 06:43:17,727 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:43:17,727 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:43:17,727 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:43:17,727 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-09-01 06:43:17,779 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:43:17,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 807 places, 890 transitions, 2260 flow [2023-09-01 06:43:18,328 INFO L130 PetriNetUnfolder]: 204/1661 cut-off events. [2023-09-01 06:43:18,328 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 06:43:18,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 1661 events. 204/1661 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 6130 event pairs, 0 based on Foata normal form. 0/1316 useless extension candidates. Maximal degree in co-relation 1808. Up to 42 conditions per place. [2023-09-01 06:43:18,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 807 places, 890 transitions, 2260 flow [2023-09-01 06:43:18,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 807 places, 890 transitions, 2260 flow [2023-09-01 06:43:18,433 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:18,433 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 807 places, 890 transitions, 2260 flow [2023-09-01 06:43:18,433 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 807 places, 890 transitions, 2260 flow [2023-09-01 06:43:18,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 807 places, 890 transitions, 2260 flow [2023-09-01 06:43:18,903 INFO L130 PetriNetUnfolder]: 204/1661 cut-off events. [2023-09-01 06:43:18,903 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 06:43:18,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 1661 events. 204/1661 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 6130 event pairs, 0 based on Foata normal form. 0/1316 useless extension candidates. Maximal degree in co-relation 1808. Up to 42 conditions per place. [2023-09-01 06:43:19,287 INFO L119 LiptonReduction]: Number of co-enabled transitions 687200 [2023-09-01 06:43:27,646 INFO L134 LiptonReduction]: Checked pairs total: 1789988 [2023-09-01 06:43:27,646 INFO L136 LiptonReduction]: Total number of compositions: 694 [2023-09-01 06:43:27,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:43:27,648 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:43:27,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:43:27,743 INFO L130 PetriNetUnfolder]: 154/669 cut-off events. [2023-09-01 06:43:27,743 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 06:43:27,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:43:27,743 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:43:27,743 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:43:27,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:43:27,743 INFO L85 PathProgramCache]: Analyzing trace with hash -2070563260, now seen corresponding path program 1 times [2023-09-01 06:43:27,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:43:27,744 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979784834] [2023-09-01 06:43:27,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:43:27,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:43:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:27,783 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:43:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:27,819 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:43:27,819 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:43:27,819 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:43:27,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 06:43:27,820 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:43:27,820 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:43:27,820 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:43:27,820 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-09-01 06:43:27,893 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:43:27,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 844 places, 931 transitions, 2387 flow [2023-09-01 06:43:28,563 INFO L130 PetriNetUnfolder]: 214/1741 cut-off events. [2023-09-01 06:43:28,563 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 06:43:28,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 1741 events. 214/1741 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6317 event pairs, 0 based on Foata normal form. 0/1379 useless extension candidates. Maximal degree in co-relation 1911. Up to 44 conditions per place. [2023-09-01 06:43:28,645 INFO L82 GeneralOperation]: Start removeDead. Operand has 844 places, 931 transitions, 2387 flow [2023-09-01 06:43:28,667 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 844 places, 931 transitions, 2387 flow [2023-09-01 06:43:28,668 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:28,668 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 844 places, 931 transitions, 2387 flow [2023-09-01 06:43:28,668 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 844 places, 931 transitions, 2387 flow [2023-09-01 06:43:28,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 844 places, 931 transitions, 2387 flow [2023-09-01 06:43:29,174 INFO L130 PetriNetUnfolder]: 214/1741 cut-off events. [2023-09-01 06:43:29,174 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 06:43:29,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2036 conditions, 1741 events. 214/1741 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6317 event pairs, 0 based on Foata normal form. 0/1379 useless extension candidates. Maximal degree in co-relation 1911. Up to 44 conditions per place. [2023-09-01 06:43:29,491 INFO L119 LiptonReduction]: Number of co-enabled transitions 756000 [2023-09-01 06:43:38,302 INFO L134 LiptonReduction]: Checked pairs total: 2002363 [2023-09-01 06:43:38,302 INFO L136 LiptonReduction]: Total number of compositions: 720 [2023-09-01 06:43:38,303 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:43:38,303 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:43:38,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:43:38,433 INFO L130 PetriNetUnfolder]: 185/727 cut-off events. [2023-09-01 06:43:38,434 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 06:43:38,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:43:38,434 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:43:38,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:43:38,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:43:38,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1900139549, now seen corresponding path program 1 times [2023-09-01 06:43:38,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:43:38,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608368933] [2023-09-01 06:43:38,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:43:38,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:43:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:38,470 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:43:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:38,507 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:43:38,508 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:43:38,508 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:43:38,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 06:43:38,508 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:43:38,509 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:43:38,509 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:43:38,509 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-09-01 06:43:38,570 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:43:38,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 881 places, 972 transitions, 2516 flow [2023-09-01 06:43:39,165 INFO L130 PetriNetUnfolder]: 224/1821 cut-off events. [2023-09-01 06:43:39,165 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 06:43:39,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2141 conditions, 1821 events. 224/1821 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6579 event pairs, 0 based on Foata normal form. 0/1442 useless extension candidates. Maximal degree in co-relation 2015. Up to 46 conditions per place. [2023-09-01 06:43:39,279 INFO L82 GeneralOperation]: Start removeDead. Operand has 881 places, 972 transitions, 2516 flow [2023-09-01 06:43:39,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 881 places, 972 transitions, 2516 flow [2023-09-01 06:43:39,309 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:39,309 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 881 places, 972 transitions, 2516 flow [2023-09-01 06:43:39,309 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 881 places, 972 transitions, 2516 flow [2023-09-01 06:43:39,309 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 881 places, 972 transitions, 2516 flow [2023-09-01 06:43:39,871 INFO L130 PetriNetUnfolder]: 224/1821 cut-off events. [2023-09-01 06:43:39,871 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 06:43:39,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2141 conditions, 1821 events. 224/1821 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6579 event pairs, 0 based on Foata normal form. 0/1442 useless extension candidates. Maximal degree in co-relation 2015. Up to 46 conditions per place. [2023-09-01 06:43:40,169 INFO L119 LiptonReduction]: Number of co-enabled transitions 828080 [2023-09-01 06:43:49,229 INFO L134 LiptonReduction]: Checked pairs total: 2199588 [2023-09-01 06:43:49,229 INFO L136 LiptonReduction]: Total number of compositions: 756 [2023-09-01 06:43:49,231 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:43:49,231 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:43:49,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:43:49,423 INFO L130 PetriNetUnfolder]: 194/762 cut-off events. [2023-09-01 06:43:49,423 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 06:43:49,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:43:49,424 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:43:49,424 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:43:49,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:43:49,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1973057755, now seen corresponding path program 1 times [2023-09-01 06:43:49,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:43:49,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223758933] [2023-09-01 06:43:49,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:43:49,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:43:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:49,470 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:43:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:43:49,515 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:43:49,515 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:43:49,515 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:43:49,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 06:43:49,516 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:43:49,516 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:43:49,516 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:43:49,517 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-09-01 06:43:49,593 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:43:49,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 918 places, 1013 transitions, 2647 flow [2023-09-01 06:43:50,331 INFO L130 PetriNetUnfolder]: 234/1901 cut-off events. [2023-09-01 06:43:50,332 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 06:43:50,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2247 conditions, 1901 events. 234/1901 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6912 event pairs, 0 based on Foata normal form. 0/1505 useless extension candidates. Maximal degree in co-relation 2120. Up to 48 conditions per place. [2023-09-01 06:43:50,461 INFO L82 GeneralOperation]: Start removeDead. Operand has 918 places, 1013 transitions, 2647 flow [2023-09-01 06:43:50,495 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 918 places, 1013 transitions, 2647 flow [2023-09-01 06:43:50,495 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:43:50,496 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 918 places, 1013 transitions, 2647 flow [2023-09-01 06:43:50,496 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 918 places, 1013 transitions, 2647 flow [2023-09-01 06:43:50,496 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 918 places, 1013 transitions, 2647 flow [2023-09-01 06:43:51,127 INFO L130 PetriNetUnfolder]: 234/1901 cut-off events. [2023-09-01 06:43:51,127 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 06:43:51,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2247 conditions, 1901 events. 234/1901 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 6912 event pairs, 0 based on Foata normal form. 0/1505 useless extension candidates. Maximal degree in co-relation 2120. Up to 48 conditions per place. [2023-09-01 06:43:51,591 INFO L119 LiptonReduction]: Number of co-enabled transitions 903440 [2023-09-01 06:44:01,445 INFO L134 LiptonReduction]: Checked pairs total: 2417661 [2023-09-01 06:44:01,445 INFO L136 LiptonReduction]: Total number of compositions: 793 [2023-09-01 06:44:01,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:01,446 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:01,447 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:01,584 INFO L130 PetriNetUnfolder]: 203/797 cut-off events. [2023-09-01 06:44:01,584 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 06:44:01,584 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:01,584 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:44:01,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:01,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:01,584 INFO L85 PathProgramCache]: Analyzing trace with hash 2094755169, now seen corresponding path program 1 times [2023-09-01 06:44:01,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:01,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23094918] [2023-09-01 06:44:01,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:01,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:01,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:01,620 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:01,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:01,661 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:01,662 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:01,662 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:01,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 06:44:01,662 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:01,663 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:01,663 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:01,663 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-09-01 06:44:01,721 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:44:01,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 955 places, 1054 transitions, 2780 flow [2023-09-01 06:44:02,642 INFO L130 PetriNetUnfolder]: 244/1981 cut-off events. [2023-09-01 06:44:02,642 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 06:44:02,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 1981 events. 244/1981 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7209 event pairs, 0 based on Foata normal form. 0/1568 useless extension candidates. Maximal degree in co-relation 2226. Up to 50 conditions per place. [2023-09-01 06:44:02,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 955 places, 1054 transitions, 2780 flow [2023-09-01 06:44:02,764 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 955 places, 1054 transitions, 2780 flow [2023-09-01 06:44:02,764 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:02,765 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 955 places, 1054 transitions, 2780 flow [2023-09-01 06:44:02,765 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 955 places, 1054 transitions, 2780 flow [2023-09-01 06:44:02,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 955 places, 1054 transitions, 2780 flow [2023-09-01 06:44:03,454 INFO L130 PetriNetUnfolder]: 244/1981 cut-off events. [2023-09-01 06:44:03,454 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 06:44:03,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 1981 events. 244/1981 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7209 event pairs, 0 based on Foata normal form. 0/1568 useless extension candidates. Maximal degree in co-relation 2226. Up to 50 conditions per place. [2023-09-01 06:44:03,884 INFO L119 LiptonReduction]: Number of co-enabled transitions 982080 [2023-09-01 06:44:13,807 INFO L134 LiptonReduction]: Checked pairs total: 2619937 [2023-09-01 06:44:13,807 INFO L136 LiptonReduction]: Total number of compositions: 804 [2023-09-01 06:44:13,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:13,809 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:13,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:13,980 INFO L130 PetriNetUnfolder]: 212/832 cut-off events. [2023-09-01 06:44:13,981 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 06:44:13,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:13,981 INFO L208 CegarLoopForPetriNet]: trace histogram [25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:44:13,981 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:13,982 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:13,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1622997345, now seen corresponding path program 1 times [2023-09-01 06:44:13,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:13,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927168265] [2023-09-01 06:44:13,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:13,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:14,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:14,019 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:14,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:14,070 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:14,070 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:14,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 06:44:14,070 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:14,071 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:14,071 WARN L233 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:14,071 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2023-09-01 06:44:14,132 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:44:14,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 992 places, 1095 transitions, 2915 flow [2023-09-01 06:44:14,932 INFO L130 PetriNetUnfolder]: 254/2061 cut-off events. [2023-09-01 06:44:14,932 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 06:44:15,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 2061 events. 254/2061 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7498 event pairs, 0 based on Foata normal form. 0/1631 useless extension candidates. Maximal degree in co-relation 2333. Up to 52 conditions per place. [2023-09-01 06:44:15,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 992 places, 1095 transitions, 2915 flow [2023-09-01 06:44:15,125 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 992 places, 1095 transitions, 2915 flow [2023-09-01 06:44:15,125 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:15,126 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 992 places, 1095 transitions, 2915 flow [2023-09-01 06:44:15,126 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 992 places, 1095 transitions, 2915 flow [2023-09-01 06:44:15,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 992 places, 1095 transitions, 2915 flow [2023-09-01 06:44:15,902 INFO L130 PetriNetUnfolder]: 254/2061 cut-off events. [2023-09-01 06:44:15,903 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 06:44:16,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2462 conditions, 2061 events. 254/2061 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7498 event pairs, 0 based on Foata normal form. 0/1631 useless extension candidates. Maximal degree in co-relation 2333. Up to 52 conditions per place. [2023-09-01 06:44:16,250 INFO L119 LiptonReduction]: Number of co-enabled transitions 1064000 [2023-09-01 06:44:26,776 INFO L134 LiptonReduction]: Checked pairs total: 2822684 [2023-09-01 06:44:26,776 INFO L136 LiptonReduction]: Total number of compositions: 851 [2023-09-01 06:44:26,778 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:26,778 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:26,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:26,928 INFO L130 PetriNetUnfolder]: 221/867 cut-off events. [2023-09-01 06:44:26,928 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 06:44:26,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:26,928 INFO L208 CegarLoopForPetriNet]: trace histogram [26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:44:26,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:26,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:26,929 INFO L85 PathProgramCache]: Analyzing trace with hash 511799311, now seen corresponding path program 1 times [2023-09-01 06:44:26,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:26,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207456579] [2023-09-01 06:44:26,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:26,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:26,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:26,965 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:26,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:27,008 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:27,009 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:27,009 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:27,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-09-01 06:44:27,009 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:27,010 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:27,010 WARN L233 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:27,010 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2023-09-01 06:44:27,098 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:44:27,105 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1029 places, 1136 transitions, 3052 flow [2023-09-01 06:44:28,137 INFO L130 PetriNetUnfolder]: 264/2141 cut-off events. [2023-09-01 06:44:28,137 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-09-01 06:44:28,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 2141 events. 264/2141 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7765 event pairs, 0 based on Foata normal form. 0/1694 useless extension candidates. Maximal degree in co-relation 2441. Up to 54 conditions per place. [2023-09-01 06:44:28,285 INFO L82 GeneralOperation]: Start removeDead. Operand has 1029 places, 1136 transitions, 3052 flow [2023-09-01 06:44:28,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1029 places, 1136 transitions, 3052 flow [2023-09-01 06:44:28,328 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:28,328 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1029 places, 1136 transitions, 3052 flow [2023-09-01 06:44:28,328 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1029 places, 1136 transitions, 3052 flow [2023-09-01 06:44:28,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1029 places, 1136 transitions, 3052 flow [2023-09-01 06:44:29,245 INFO L130 PetriNetUnfolder]: 264/2141 cut-off events. [2023-09-01 06:44:29,245 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-09-01 06:44:29,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2571 conditions, 2141 events. 264/2141 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 7765 event pairs, 0 based on Foata normal form. 0/1694 useless extension candidates. Maximal degree in co-relation 2441. Up to 54 conditions per place. [2023-09-01 06:44:29,573 INFO L119 LiptonReduction]: Number of co-enabled transitions 1149200 [2023-09-01 06:44:40,725 INFO L134 LiptonReduction]: Checked pairs total: 3060678 [2023-09-01 06:44:40,725 INFO L136 LiptonReduction]: Total number of compositions: 878 [2023-09-01 06:44:40,727 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:40,727 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:40,727 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:40,888 INFO L130 PetriNetUnfolder]: 202/873 cut-off events. [2023-09-01 06:44:40,888 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-09-01 06:44:40,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:40,888 INFO L208 CegarLoopForPetriNet]: trace histogram [27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:44:40,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:40,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:40,889 INFO L85 PathProgramCache]: Analyzing trace with hash 481014324, now seen corresponding path program 1 times [2023-09-01 06:44:40,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:40,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207906961] [2023-09-01 06:44:40,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:40,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:40,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:40,979 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:41,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:41,038 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:41,039 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:41,039 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:41,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-09-01 06:44:41,040 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:41,041 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:41,041 WARN L233 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:41,041 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2023-09-01 06:44:41,107 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:44:41,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1066 places, 1177 transitions, 3191 flow [2023-09-01 06:44:42,038 INFO L130 PetriNetUnfolder]: 274/2221 cut-off events. [2023-09-01 06:44:42,039 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-09-01 06:44:42,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2681 conditions, 2221 events. 274/2221 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 8110 event pairs, 0 based on Foata normal form. 0/1757 useless extension candidates. Maximal degree in co-relation 2550. Up to 56 conditions per place. [2023-09-01 06:44:42,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 1066 places, 1177 transitions, 3191 flow [2023-09-01 06:44:42,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1066 places, 1177 transitions, 3191 flow [2023-09-01 06:44:42,267 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:42,267 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1066 places, 1177 transitions, 3191 flow [2023-09-01 06:44:42,267 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1066 places, 1177 transitions, 3191 flow [2023-09-01 06:44:42,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1066 places, 1177 transitions, 3191 flow [2023-09-01 06:44:43,293 INFO L130 PetriNetUnfolder]: 274/2221 cut-off events. [2023-09-01 06:44:43,293 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-09-01 06:44:43,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2681 conditions, 2221 events. 274/2221 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 8110 event pairs, 0 based on Foata normal form. 0/1757 useless extension candidates. Maximal degree in co-relation 2550. Up to 56 conditions per place. [2023-09-01 06:44:43,667 INFO L119 LiptonReduction]: Number of co-enabled transitions 1237680 [2023-09-01 06:44:55,024 INFO L134 LiptonReduction]: Checked pairs total: 3307588 [2023-09-01 06:44:55,024 INFO L136 LiptonReduction]: Total number of compositions: 911 [2023-09-01 06:44:55,026 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:44:55,026 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:44:55,026 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:44:55,204 INFO L130 PetriNetUnfolder]: 239/937 cut-off events. [2023-09-01 06:44:55,204 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-09-01 06:44:55,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:44:55,204 INFO L208 CegarLoopForPetriNet]: trace histogram [28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:44:55,204 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:44:55,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:44:55,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1642566995, now seen corresponding path program 1 times [2023-09-01 06:44:55,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:44:55,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443286273] [2023-09-01 06:44:55,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:44:55,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:44:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:55,267 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:44:55,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:44:55,314 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:44:55,315 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:44:55,315 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:44:55,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-09-01 06:44:55,315 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:44:55,315 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:44:55,316 WARN L233 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:44:55,316 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2023-09-01 06:44:55,397 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:44:55,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1103 places, 1218 transitions, 3332 flow [2023-09-01 06:44:56,411 INFO L130 PetriNetUnfolder]: 284/2301 cut-off events. [2023-09-01 06:44:56,412 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-09-01 06:44:56,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2792 conditions, 2301 events. 284/2301 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 8375 event pairs, 0 based on Foata normal form. 0/1820 useless extension candidates. Maximal degree in co-relation 2660. Up to 58 conditions per place. [2023-09-01 06:44:56,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 1103 places, 1218 transitions, 3332 flow [2023-09-01 06:44:56,571 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1103 places, 1218 transitions, 3332 flow [2023-09-01 06:44:56,571 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:44:56,571 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1103 places, 1218 transitions, 3332 flow [2023-09-01 06:44:56,571 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1103 places, 1218 transitions, 3332 flow [2023-09-01 06:44:56,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1103 places, 1218 transitions, 3332 flow [2023-09-01 06:44:57,584 INFO L130 PetriNetUnfolder]: 284/2301 cut-off events. [2023-09-01 06:44:57,584 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-09-01 06:44:57,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2792 conditions, 2301 events. 284/2301 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 8375 event pairs, 0 based on Foata normal form. 0/1820 useless extension candidates. Maximal degree in co-relation 2660. Up to 58 conditions per place. [2023-09-01 06:44:58,213 INFO L119 LiptonReduction]: Number of co-enabled transitions 1329440 [2023-09-01 06:45:10,606 INFO L134 LiptonReduction]: Checked pairs total: 3555010 [2023-09-01 06:45:10,606 INFO L136 LiptonReduction]: Total number of compositions: 937 [2023-09-01 06:45:10,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:45:10,607 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:45:10,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:45:10,795 INFO L130 PetriNetUnfolder]: 248/972 cut-off events. [2023-09-01 06:45:10,796 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-09-01 06:45:10,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:45:10,796 INFO L208 CegarLoopForPetriNet]: trace histogram [29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:45:10,796 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:45:10,796 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:45:10,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1246751082, now seen corresponding path program 1 times [2023-09-01 06:45:10,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:45:10,796 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191667666] [2023-09-01 06:45:10,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:45:10,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:45:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:10,837 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:45:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:10,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:45:10,889 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:45:10,889 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:45:10,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-09-01 06:45:10,890 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:45:10,890 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:45:10,890 WARN L233 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:45:10,890 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2023-09-01 06:45:10,960 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:45:10,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1140 places, 1259 transitions, 3475 flow [2023-09-01 06:45:12,136 INFO L130 PetriNetUnfolder]: 294/2381 cut-off events. [2023-09-01 06:45:12,136 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-09-01 06:45:12,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 2381 events. 294/2381 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 8662 event pairs, 0 based on Foata normal form. 0/1883 useless extension candidates. Maximal degree in co-relation 2771. Up to 60 conditions per place. [2023-09-01 06:45:12,338 INFO L82 GeneralOperation]: Start removeDead. Operand has 1140 places, 1259 transitions, 3475 flow [2023-09-01 06:45:12,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1140 places, 1259 transitions, 3475 flow [2023-09-01 06:45:12,393 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:45:12,393 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1140 places, 1259 transitions, 3475 flow [2023-09-01 06:45:12,393 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1140 places, 1259 transitions, 3475 flow [2023-09-01 06:45:12,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1140 places, 1259 transitions, 3475 flow [2023-09-01 06:45:13,426 INFO L130 PetriNetUnfolder]: 294/2381 cut-off events. [2023-09-01 06:45:13,426 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-09-01 06:45:13,565 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2904 conditions, 2381 events. 294/2381 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 8662 event pairs, 0 based on Foata normal form. 0/1883 useless extension candidates. Maximal degree in co-relation 2771. Up to 60 conditions per place. [2023-09-01 06:45:13,915 INFO L119 LiptonReduction]: Number of co-enabled transitions 1424480 [2023-09-01 06:45:25,977 INFO L134 LiptonReduction]: Checked pairs total: 3790385 [2023-09-01 06:45:25,977 INFO L136 LiptonReduction]: Total number of compositions: 973 [2023-09-01 06:45:25,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:45:25,979 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:45:25,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:45:26,180 INFO L130 PetriNetUnfolder]: 257/1007 cut-off events. [2023-09-01 06:45:26,180 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-09-01 06:45:26,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:45:26,181 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:45:26,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:45:26,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:45:26,181 INFO L85 PathProgramCache]: Analyzing trace with hash -954918264, now seen corresponding path program 1 times [2023-09-01 06:45:26,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:45:26,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019046504] [2023-09-01 06:45:26,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:45:26,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:45:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:26,219 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:45:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:26,268 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:45:26,269 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:45:26,269 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:45:26,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-09-01 06:45:26,270 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:45:26,270 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:45:26,270 WARN L233 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:45:26,270 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2023-09-01 06:45:26,338 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:45:26,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1177 places, 1300 transitions, 3620 flow [2023-09-01 06:45:27,508 INFO L130 PetriNetUnfolder]: 304/2461 cut-off events. [2023-09-01 06:45:27,508 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-09-01 06:45:27,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3017 conditions, 2461 events. 304/2461 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 8984 event pairs, 0 based on Foata normal form. 0/1946 useless extension candidates. Maximal degree in co-relation 2883. Up to 62 conditions per place. [2023-09-01 06:45:27,657 INFO L82 GeneralOperation]: Start removeDead. Operand has 1177 places, 1300 transitions, 3620 flow [2023-09-01 06:45:27,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1177 places, 1300 transitions, 3620 flow [2023-09-01 06:45:27,708 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:45:27,709 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1177 places, 1300 transitions, 3620 flow [2023-09-01 06:45:27,709 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1177 places, 1300 transitions, 3620 flow [2023-09-01 06:45:27,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1177 places, 1300 transitions, 3620 flow [2023-09-01 06:45:28,810 INFO L130 PetriNetUnfolder]: 304/2461 cut-off events. [2023-09-01 06:45:28,811 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-09-01 06:45:29,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3017 conditions, 2461 events. 304/2461 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 8984 event pairs, 0 based on Foata normal form. 0/1946 useless extension candidates. Maximal degree in co-relation 2883. Up to 62 conditions per place. [2023-09-01 06:45:29,523 INFO L119 LiptonReduction]: Number of co-enabled transitions 1522800 [2023-09-01 06:45:42,215 INFO L134 LiptonReduction]: Checked pairs total: 4558007 [2023-09-01 06:45:42,215 INFO L136 LiptonReduction]: Total number of compositions: 995 [2023-09-01 06:45:42,216 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:45:42,216 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:45:42,216 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:45:42,419 INFO L130 PetriNetUnfolder]: 234/1009 cut-off events. [2023-09-01 06:45:42,420 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-09-01 06:45:42,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:45:42,420 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:45:42,420 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:45:42,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:45:42,420 INFO L85 PathProgramCache]: Analyzing trace with hash 943340036, now seen corresponding path program 1 times [2023-09-01 06:45:42,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:45:42,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888262642] [2023-09-01 06:45:42,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:45:42,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:45:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:42,465 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:45:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:42,517 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:45:42,518 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:45:42,518 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:45:42,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-09-01 06:45:42,518 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:45:42,518 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:45:42,519 WARN L233 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:45:42,519 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2023-09-01 06:45:42,597 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:45:42,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1214 places, 1341 transitions, 3767 flow [2023-09-01 06:45:43,880 INFO L130 PetriNetUnfolder]: 314/2541 cut-off events. [2023-09-01 06:45:43,881 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-09-01 06:45:44,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 2541 events. 314/2541 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 9258 event pairs, 0 based on Foata normal form. 0/2009 useless extension candidates. Maximal degree in co-relation 2996. Up to 64 conditions per place. [2023-09-01 06:45:44,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 1214 places, 1341 transitions, 3767 flow [2023-09-01 06:45:44,250 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1214 places, 1341 transitions, 3767 flow [2023-09-01 06:45:44,250 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:45:44,250 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1214 places, 1341 transitions, 3767 flow [2023-09-01 06:45:44,250 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1214 places, 1341 transitions, 3767 flow [2023-09-01 06:45:44,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1214 places, 1341 transitions, 3767 flow [2023-09-01 06:45:45,456 INFO L130 PetriNetUnfolder]: 314/2541 cut-off events. [2023-09-01 06:45:45,456 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-09-01 06:45:45,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3131 conditions, 2541 events. 314/2541 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 9258 event pairs, 0 based on Foata normal form. 0/2009 useless extension candidates. Maximal degree in co-relation 2996. Up to 64 conditions per place. [2023-09-01 06:45:46,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 1624400 [2023-09-01 06:45:59,262 INFO L134 LiptonReduction]: Checked pairs total: 4373654 [2023-09-01 06:45:59,263 INFO L136 LiptonReduction]: Total number of compositions: 1033 [2023-09-01 06:45:59,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:45:59,264 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:45:59,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:45:59,586 INFO L130 PetriNetUnfolder]: 242/1043 cut-off events. [2023-09-01 06:45:59,586 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-09-01 06:45:59,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:45:59,586 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:45:59,586 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:45:59,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:45:59,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1072740142, now seen corresponding path program 1 times [2023-09-01 06:45:59,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:45:59,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928245198] [2023-09-01 06:45:59,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:45:59,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:45:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:59,634 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:45:59,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:45:59,697 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:45:59,698 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:45:59,698 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:45:59,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-09-01 06:45:59,698 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:45:59,699 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:45:59,699 WARN L233 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:45:59,699 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2023-09-01 06:45:59,780 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:45:59,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1251 places, 1382 transitions, 3916 flow [2023-09-01 06:46:01,084 INFO L130 PetriNetUnfolder]: 324/2621 cut-off events. [2023-09-01 06:46:01,084 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-09-01 06:46:01,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 2621 events. 324/2621 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 9535 event pairs, 0 based on Foata normal form. 0/2072 useless extension candidates. Maximal degree in co-relation 3110. Up to 66 conditions per place. [2023-09-01 06:46:01,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 1251 places, 1382 transitions, 3916 flow [2023-09-01 06:46:01,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1251 places, 1382 transitions, 3916 flow [2023-09-01 06:46:01,421 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:01,421 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1251 places, 1382 transitions, 3916 flow [2023-09-01 06:46:01,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1251 places, 1382 transitions, 3916 flow [2023-09-01 06:46:01,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1251 places, 1382 transitions, 3916 flow [2023-09-01 06:46:02,770 INFO L130 PetriNetUnfolder]: 324/2621 cut-off events. [2023-09-01 06:46:02,771 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-09-01 06:46:02,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3246 conditions, 2621 events. 324/2621 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 9535 event pairs, 0 based on Foata normal form. 0/2072 useless extension candidates. Maximal degree in co-relation 3110. Up to 66 conditions per place. [2023-09-01 06:46:03,402 INFO L119 LiptonReduction]: Number of co-enabled transitions 1729280 [2023-09-01 06:46:17,225 INFO L134 LiptonReduction]: Checked pairs total: 4619198 [2023-09-01 06:46:17,225 INFO L136 LiptonReduction]: Total number of compositions: 1081 [2023-09-01 06:46:17,227 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:46:17,227 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:46:17,228 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:46:17,484 INFO L130 PetriNetUnfolder]: 284/1112 cut-off events. [2023-09-01 06:46:17,484 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-09-01 06:46:17,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:46:17,484 INFO L208 CegarLoopForPetriNet]: trace histogram [33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:46:17,484 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:46:17,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:46:17,485 INFO L85 PathProgramCache]: Analyzing trace with hash -719485743, now seen corresponding path program 1 times [2023-09-01 06:46:17,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:46:17,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394895028] [2023-09-01 06:46:17,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:46:17,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:46:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:17,533 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:46:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:17,589 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:46:17,589 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:46:17,590 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:46:17,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-09-01 06:46:17,590 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:46:17,590 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:46:17,590 WARN L233 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:46:17,590 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2023-09-01 06:46:17,718 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:46:17,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1288 places, 1423 transitions, 4067 flow [2023-09-01 06:46:19,126 INFO L130 PetriNetUnfolder]: 334/2701 cut-off events. [2023-09-01 06:46:19,127 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-09-01 06:46:19,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 2701 events. 334/2701 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 9831 event pairs, 0 based on Foata normal form. 0/2135 useless extension candidates. Maximal degree in co-relation 3225. Up to 68 conditions per place. [2023-09-01 06:46:19,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 1288 places, 1423 transitions, 4067 flow [2023-09-01 06:46:19,486 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1288 places, 1423 transitions, 4067 flow [2023-09-01 06:46:19,486 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:19,487 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1288 places, 1423 transitions, 4067 flow [2023-09-01 06:46:19,487 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1288 places, 1423 transitions, 4067 flow [2023-09-01 06:46:19,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1288 places, 1423 transitions, 4067 flow [2023-09-01 06:46:20,924 INFO L130 PetriNetUnfolder]: 334/2701 cut-off events. [2023-09-01 06:46:20,924 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-09-01 06:46:21,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3362 conditions, 2701 events. 334/2701 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 9831 event pairs, 0 based on Foata normal form. 0/2135 useless extension candidates. Maximal degree in co-relation 3225. Up to 68 conditions per place. [2023-09-01 06:46:21,577 INFO L119 LiptonReduction]: Number of co-enabled transitions 1837440 [2023-09-01 06:46:35,935 INFO L134 LiptonReduction]: Checked pairs total: 4905094 [2023-09-01 06:46:35,935 INFO L136 LiptonReduction]: Total number of compositions: 1098 [2023-09-01 06:46:35,937 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:46:35,938 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:46:35,938 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:46:36,286 INFO L130 PetriNetUnfolder]: 293/1147 cut-off events. [2023-09-01 06:46:36,286 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-09-01 06:46:36,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:46:36,286 INFO L208 CegarLoopForPetriNet]: trace histogram [34, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:46:36,286 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:46:36,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:46:36,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1738283445, now seen corresponding path program 1 times [2023-09-01 06:46:36,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:46:36,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307151840] [2023-09-01 06:46:36,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:46:36,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:46:36,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:36,348 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:46:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:36,415 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:46:36,415 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:46:36,416 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:46:36,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-09-01 06:46:36,416 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:46:36,416 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:46:36,416 WARN L233 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:46:36,417 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2023-09-01 06:46:36,503 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:46:36,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1325 places, 1464 transitions, 4220 flow [2023-09-01 06:46:38,093 INFO L130 PetriNetUnfolder]: 344/2781 cut-off events. [2023-09-01 06:46:38,093 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-09-01 06:46:38,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3479 conditions, 2781 events. 344/2781 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 10176 event pairs, 0 based on Foata normal form. 0/2198 useless extension candidates. Maximal degree in co-relation 3341. Up to 70 conditions per place. [2023-09-01 06:46:38,375 INFO L82 GeneralOperation]: Start removeDead. Operand has 1325 places, 1464 transitions, 4220 flow [2023-09-01 06:46:38,450 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1325 places, 1464 transitions, 4220 flow [2023-09-01 06:46:38,450 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:38,450 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1325 places, 1464 transitions, 4220 flow [2023-09-01 06:46:38,450 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1325 places, 1464 transitions, 4220 flow [2023-09-01 06:46:38,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1325 places, 1464 transitions, 4220 flow [2023-09-01 06:46:39,903 INFO L130 PetriNetUnfolder]: 344/2781 cut-off events. [2023-09-01 06:46:39,903 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-09-01 06:46:40,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3479 conditions, 2781 events. 344/2781 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 10176 event pairs, 0 based on Foata normal form. 0/2198 useless extension candidates. Maximal degree in co-relation 3341. Up to 70 conditions per place. [2023-09-01 06:46:40,712 INFO L119 LiptonReduction]: Number of co-enabled transitions 1948880 [2023-09-01 06:46:55,468 INFO L134 LiptonReduction]: Checked pairs total: 5222990 [2023-09-01 06:46:55,468 INFO L136 LiptonReduction]: Total number of compositions: 1112 [2023-09-01 06:46:55,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:46:55,470 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:46:55,470 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:46:55,770 INFO L130 PetriNetUnfolder]: 302/1182 cut-off events. [2023-09-01 06:46:55,770 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-09-01 06:46:55,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:46:55,771 INFO L208 CegarLoopForPetriNet]: trace histogram [35, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:46:55,771 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:46:55,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:46:55,771 INFO L85 PathProgramCache]: Analyzing trace with hash -155548814, now seen corresponding path program 1 times [2023-09-01 06:46:55,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:46:55,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908591703] [2023-09-01 06:46:55,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:46:55,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:46:55,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:55,823 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:46:55,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:46:55,953 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:46:55,953 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:46:55,953 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:46:55,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-09-01 06:46:55,953 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:46:55,954 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:46:55,954 WARN L233 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:46:55,954 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2023-09-01 06:46:56,042 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:46:56,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1362 places, 1505 transitions, 4375 flow [2023-09-01 06:46:57,665 INFO L130 PetriNetUnfolder]: 354/2861 cut-off events. [2023-09-01 06:46:57,666 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-09-01 06:46:57,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3597 conditions, 2861 events. 354/2861 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 10443 event pairs, 0 based on Foata normal form. 0/2261 useless extension candidates. Maximal degree in co-relation 3458. Up to 72 conditions per place. [2023-09-01 06:46:57,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 1362 places, 1505 transitions, 4375 flow [2023-09-01 06:46:58,048 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1362 places, 1505 transitions, 4375 flow [2023-09-01 06:46:58,048 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:46:58,048 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1362 places, 1505 transitions, 4375 flow [2023-09-01 06:46:58,048 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1362 places, 1505 transitions, 4375 flow [2023-09-01 06:46:58,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1362 places, 1505 transitions, 4375 flow [2023-09-01 06:46:59,550 INFO L130 PetriNetUnfolder]: 354/2861 cut-off events. [2023-09-01 06:46:59,550 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-09-01 06:46:59,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3597 conditions, 2861 events. 354/2861 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 10443 event pairs, 0 based on Foata normal form. 0/2261 useless extension candidates. Maximal degree in co-relation 3458. Up to 72 conditions per place. [2023-09-01 06:47:00,435 INFO L119 LiptonReduction]: Number of co-enabled transitions 2063600 [2023-09-01 06:47:15,570 INFO L134 LiptonReduction]: Checked pairs total: 5512606 [2023-09-01 06:47:15,570 INFO L136 LiptonReduction]: Total number of compositions: 1150 [2023-09-01 06:47:15,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:47:15,572 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:47:15,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:47:15,884 INFO L130 PetriNetUnfolder]: 311/1217 cut-off events. [2023-09-01 06:47:15,884 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-09-01 06:47:15,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:47:15,884 INFO L208 CegarLoopForPetriNet]: trace histogram [36, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:47:15,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:47:15,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:47:15,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1638357442, now seen corresponding path program 1 times [2023-09-01 06:47:15,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:47:15,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306589533] [2023-09-01 06:47:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:47:15,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:47:15,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:15,935 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:47:15,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:16,002 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:47:16,002 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:47:16,003 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:47:16,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-09-01 06:47:16,003 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:47:16,003 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:47:16,004 WARN L233 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:47:16,004 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2023-09-01 06:47:16,093 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:47:16,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1399 places, 1546 transitions, 4532 flow [2023-09-01 06:47:17,724 INFO L130 PetriNetUnfolder]: 364/2941 cut-off events. [2023-09-01 06:47:17,725 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-09-01 06:47:17,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3716 conditions, 2941 events. 364/2941 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 10772 event pairs, 0 based on Foata normal form. 0/2324 useless extension candidates. Maximal degree in co-relation 3576. Up to 74 conditions per place. [2023-09-01 06:47:17,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 1399 places, 1546 transitions, 4532 flow [2023-09-01 06:47:18,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1399 places, 1546 transitions, 4532 flow [2023-09-01 06:47:18,042 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:47:18,042 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1399 places, 1546 transitions, 4532 flow [2023-09-01 06:47:18,042 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1399 places, 1546 transitions, 4532 flow [2023-09-01 06:47:18,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1399 places, 1546 transitions, 4532 flow [2023-09-01 06:47:19,767 INFO L130 PetriNetUnfolder]: 364/2941 cut-off events. [2023-09-01 06:47:19,767 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-09-01 06:47:19,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3716 conditions, 2941 events. 364/2941 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 10772 event pairs, 0 based on Foata normal form. 0/2324 useless extension candidates. Maximal degree in co-relation 3576. Up to 74 conditions per place. [2023-09-01 06:47:20,522 INFO L119 LiptonReduction]: Number of co-enabled transitions 2181600 [2023-09-01 06:47:36,237 INFO L134 LiptonReduction]: Checked pairs total: 5825852 [2023-09-01 06:47:36,237 INFO L136 LiptonReduction]: Total number of compositions: 1190 [2023-09-01 06:47:36,238 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:47:36,239 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:47:36,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:47:36,587 INFO L130 PetriNetUnfolder]: 320/1252 cut-off events. [2023-09-01 06:47:36,587 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-09-01 06:47:36,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:47:36,587 INFO L208 CegarLoopForPetriNet]: trace histogram [37, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:47:36,587 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:47:36,588 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:47:36,588 INFO L85 PathProgramCache]: Analyzing trace with hash -389811196, now seen corresponding path program 1 times [2023-09-01 06:47:36,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:47:36,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617443115] [2023-09-01 06:47:36,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:47:36,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:47:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:36,642 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:47:36,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:36,740 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:47:36,740 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:47:36,741 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:47:36,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-09-01 06:47:36,741 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:47:36,741 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:47:36,742 WARN L233 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:47:36,742 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2023-09-01 06:47:36,831 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:47:36,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1436 places, 1587 transitions, 4691 flow [2023-09-01 06:47:38,559 INFO L130 PetriNetUnfolder]: 374/3021 cut-off events. [2023-09-01 06:47:38,559 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-09-01 06:47:38,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 3021 events. 374/3021 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 11035 event pairs, 0 based on Foata normal form. 0/2387 useless extension candidates. Maximal degree in co-relation 3695. Up to 76 conditions per place. [2023-09-01 06:47:38,848 INFO L82 GeneralOperation]: Start removeDead. Operand has 1436 places, 1587 transitions, 4691 flow [2023-09-01 06:47:38,926 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1436 places, 1587 transitions, 4691 flow [2023-09-01 06:47:38,926 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:47:38,926 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1436 places, 1587 transitions, 4691 flow [2023-09-01 06:47:38,926 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1436 places, 1587 transitions, 4691 flow [2023-09-01 06:47:38,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1436 places, 1587 transitions, 4691 flow [2023-09-01 06:47:40,644 INFO L130 PetriNetUnfolder]: 374/3021 cut-off events. [2023-09-01 06:47:40,645 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-09-01 06:47:40,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 3021 events. 374/3021 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 11035 event pairs, 0 based on Foata normal form. 0/2387 useless extension candidates. Maximal degree in co-relation 3695. Up to 76 conditions per place. [2023-09-01 06:47:41,554 INFO L119 LiptonReduction]: Number of co-enabled transitions 2302880 [2023-09-01 06:47:57,953 INFO L134 LiptonReduction]: Checked pairs total: 6180788 [2023-09-01 06:47:57,953 INFO L136 LiptonReduction]: Total number of compositions: 1219 [2023-09-01 06:47:57,955 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:47:57,955 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:47:57,955 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:47:58,315 INFO L130 PetriNetUnfolder]: 329/1287 cut-off events. [2023-09-01 06:47:58,316 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-09-01 06:47:58,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:47:58,316 INFO L208 CegarLoopForPetriNet]: trace histogram [38, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:47:58,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:47:58,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:47:58,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1054755322, now seen corresponding path program 1 times [2023-09-01 06:47:58,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:47:58,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299825218] [2023-09-01 06:47:58,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:47:58,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:47:58,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:58,367 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:47:58,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:47:58,440 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:47:58,440 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:47:58,441 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:47:58,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-09-01 06:47:58,441 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:47:58,441 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:47:58,442 WARN L233 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:47:58,442 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2023-09-01 06:47:58,538 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:47:58,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1473 places, 1628 transitions, 4852 flow [2023-09-01 06:48:00,898 INFO L130 PetriNetUnfolder]: 384/3101 cut-off events. [2023-09-01 06:48:00,898 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-09-01 06:48:01,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3957 conditions, 3101 events. 384/3101 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 11368 event pairs, 0 based on Foata normal form. 0/2450 useless extension candidates. Maximal degree in co-relation 3815. Up to 78 conditions per place. [2023-09-01 06:48:01,116 INFO L82 GeneralOperation]: Start removeDead. Operand has 1473 places, 1628 transitions, 4852 flow [2023-09-01 06:48:01,378 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1473 places, 1628 transitions, 4852 flow [2023-09-01 06:48:01,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:48:01,379 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1473 places, 1628 transitions, 4852 flow [2023-09-01 06:48:01,379 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1473 places, 1628 transitions, 4852 flow [2023-09-01 06:48:01,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1473 places, 1628 transitions, 4852 flow [2023-09-01 06:48:03,485 INFO L130 PetriNetUnfolder]: 384/3101 cut-off events. [2023-09-01 06:48:03,485 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-09-01 06:48:03,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3957 conditions, 3101 events. 384/3101 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 11368 event pairs, 0 based on Foata normal form. 0/2450 useless extension candidates. Maximal degree in co-relation 3815. Up to 78 conditions per place. [2023-09-01 06:48:04,385 INFO L119 LiptonReduction]: Number of co-enabled transitions 2427440 [2023-09-01 06:48:21,874 INFO L134 LiptonReduction]: Checked pairs total: 6547430 [2023-09-01 06:48:21,874 INFO L136 LiptonReduction]: Total number of compositions: 1255 [2023-09-01 06:48:21,876 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:48:21,876 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:48:21,876 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:48:22,246 INFO L130 PetriNetUnfolder]: 338/1322 cut-off events. [2023-09-01 06:48:22,246 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-09-01 06:48:22,246 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:48:22,247 INFO L208 CegarLoopForPetriNet]: trace histogram [39, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:48:22,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:48:22,247 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:48:22,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1557111138, now seen corresponding path program 1 times [2023-09-01 06:48:22,247 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:48:22,247 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865412588] [2023-09-01 06:48:22,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:48:22,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:48:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:48:22,301 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:48:22,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:48:22,375 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:48:22,375 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:48:22,376 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:48:22,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-09-01 06:48:22,376 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:48:22,376 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:48:22,377 WARN L233 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:48:22,377 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2023-09-01 06:48:22,470 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:48:22,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1510 places, 1669 transitions, 5015 flow [2023-09-01 06:48:24,930 INFO L130 PetriNetUnfolder]: 394/3181 cut-off events. [2023-09-01 06:48:24,930 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-09-01 06:48:25,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4079 conditions, 3181 events. 394/3181 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 11704 event pairs, 0 based on Foata normal form. 0/2513 useless extension candidates. Maximal degree in co-relation 3936. Up to 80 conditions per place. [2023-09-01 06:48:25,146 INFO L82 GeneralOperation]: Start removeDead. Operand has 1510 places, 1669 transitions, 5015 flow [2023-09-01 06:48:25,191 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1510 places, 1669 transitions, 5015 flow [2023-09-01 06:48:25,191 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:48:25,191 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1510 places, 1669 transitions, 5015 flow [2023-09-01 06:48:25,191 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1510 places, 1669 transitions, 5015 flow [2023-09-01 06:48:25,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1510 places, 1669 transitions, 5015 flow [2023-09-01 06:48:27,429 INFO L130 PetriNetUnfolder]: 394/3181 cut-off events. [2023-09-01 06:48:27,429 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-09-01 06:48:27,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4079 conditions, 3181 events. 394/3181 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 11704 event pairs, 0 based on Foata normal form. 0/2513 useless extension candidates. Maximal degree in co-relation 3936. Up to 80 conditions per place. [2023-09-01 06:48:28,461 INFO L119 LiptonReduction]: Number of co-enabled transitions 2555280 [2023-09-01 06:48:45,888 INFO L134 LiptonReduction]: Checked pairs total: 6855600 [2023-09-01 06:48:45,888 INFO L136 LiptonReduction]: Total number of compositions: 1266 [2023-09-01 06:48:45,889 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:48:45,890 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:48:45,890 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:48:46,270 INFO L130 PetriNetUnfolder]: 306/1315 cut-off events. [2023-09-01 06:48:46,271 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-09-01 06:48:46,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:48:46,271 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 39, 39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:48:46,271 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:48:46,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:48:46,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1428184417, now seen corresponding path program 1 times [2023-09-01 06:48:46,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:48:46,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338009648] [2023-09-01 06:48:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:48:46,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:48:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:48:46,325 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:48:46,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:48:46,476 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:48:46,476 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:48:46,477 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:48:46,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-09-01 06:48:46,477 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:48:46,477 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:48:46,477 WARN L233 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:48:46,478 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2023-09-01 06:48:46,574 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:48:46,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1547 places, 1710 transitions, 5180 flow [2023-09-01 06:48:49,118 INFO L130 PetriNetUnfolder]: 404/3261 cut-off events. [2023-09-01 06:48:49,118 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-09-01 06:48:49,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 3261 events. 404/3261 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 11971 event pairs, 0 based on Foata normal form. 0/2576 useless extension candidates. Maximal degree in co-relation 4058. Up to 82 conditions per place. [2023-09-01 06:48:49,360 INFO L82 GeneralOperation]: Start removeDead. Operand has 1547 places, 1710 transitions, 5180 flow [2023-09-01 06:48:49,412 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1547 places, 1710 transitions, 5180 flow [2023-09-01 06:48:49,412 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:48:49,412 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1547 places, 1710 transitions, 5180 flow [2023-09-01 06:48:49,412 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1547 places, 1710 transitions, 5180 flow [2023-09-01 06:48:49,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1547 places, 1710 transitions, 5180 flow [2023-09-01 06:48:51,845 INFO L130 PetriNetUnfolder]: 404/3261 cut-off events. [2023-09-01 06:48:51,845 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-09-01 06:48:52,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4202 conditions, 3261 events. 404/3261 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 11971 event pairs, 0 based on Foata normal form. 0/2576 useless extension candidates. Maximal degree in co-relation 4058. Up to 82 conditions per place. [2023-09-01 06:48:52,857 INFO L119 LiptonReduction]: Number of co-enabled transitions 2686400 [2023-09-01 06:49:10,844 INFO L134 LiptonReduction]: Checked pairs total: 7208293 [2023-09-01 06:49:10,845 INFO L136 LiptonReduction]: Total number of compositions: 1318 [2023-09-01 06:49:10,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:49:10,847 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:49:10,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:49:11,340 INFO L130 PetriNetUnfolder]: 356/1392 cut-off events. [2023-09-01 06:49:11,340 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-09-01 06:49:11,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:49:11,341 INFO L208 CegarLoopForPetriNet]: trace histogram [41, 40, 40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:49:11,341 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:49:11,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:49:11,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1430295075, now seen corresponding path program 1 times [2023-09-01 06:49:11,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:49:11,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101141530] [2023-09-01 06:49:11,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:49:11,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:49:11,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:49:11,399 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:49:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:49:11,486 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:49:11,486 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:49:11,486 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:49:11,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-09-01 06:49:11,487 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:49:11,487 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:49:11,487 WARN L233 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:49:11,487 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2023-09-01 06:49:11,584 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:49:11,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1584 places, 1751 transitions, 5347 flow [2023-09-01 06:49:14,288 INFO L130 PetriNetUnfolder]: 414/3341 cut-off events. [2023-09-01 06:49:14,288 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-09-01 06:49:14,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 3341 events. 414/3341 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 12255 event pairs, 0 based on Foata normal form. 0/2639 useless extension candidates. Maximal degree in co-relation 4181. Up to 84 conditions per place. [2023-09-01 06:49:14,531 INFO L82 GeneralOperation]: Start removeDead. Operand has 1584 places, 1751 transitions, 5347 flow [2023-09-01 06:49:14,582 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1584 places, 1751 transitions, 5347 flow [2023-09-01 06:49:14,583 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:49:14,583 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1584 places, 1751 transitions, 5347 flow [2023-09-01 06:49:14,583 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1584 places, 1751 transitions, 5347 flow [2023-09-01 06:49:14,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1584 places, 1751 transitions, 5347 flow [2023-09-01 06:49:17,107 INFO L130 PetriNetUnfolder]: 414/3341 cut-off events. [2023-09-01 06:49:17,107 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-09-01 06:49:17,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4326 conditions, 3341 events. 414/3341 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 12255 event pairs, 0 based on Foata normal form. 0/2639 useless extension candidates. Maximal degree in co-relation 4181. Up to 84 conditions per place. [2023-09-01 06:49:18,160 INFO L119 LiptonReduction]: Number of co-enabled transitions 2820800 [2023-09-01 06:49:38,069 INFO L134 LiptonReduction]: Checked pairs total: 7594562 [2023-09-01 06:49:38,070 INFO L136 LiptonReduction]: Total number of compositions: 1353 [2023-09-01 06:49:38,071 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:49:38,071 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:49:38,071 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:49:38,560 INFO L130 PetriNetUnfolder]: 365/1427 cut-off events. [2023-09-01 06:49:38,560 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-09-01 06:49:38,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:49:38,561 INFO L208 CegarLoopForPetriNet]: trace histogram [42, 41, 41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:49:38,561 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:49:38,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:49:38,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1603310525, now seen corresponding path program 1 times [2023-09-01 06:49:38,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:49:38,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341340684] [2023-09-01 06:49:38,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:49:38,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:49:38,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:49:38,628 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:49:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:49:38,711 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:49:38,712 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:49:38,712 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:49:38,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-09-01 06:49:38,712 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:49:38,713 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:49:38,713 WARN L233 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:49:38,713 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2023-09-01 06:49:38,879 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:49:38,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1621 places, 1792 transitions, 5516 flow [2023-09-01 06:49:42,148 INFO L130 PetriNetUnfolder]: 424/3421 cut-off events. [2023-09-01 06:49:42,148 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-09-01 06:49:42,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4451 conditions, 3421 events. 424/3421 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 12622 event pairs, 0 based on Foata normal form. 0/2702 useless extension candidates. Maximal degree in co-relation 4305. Up to 86 conditions per place. [2023-09-01 06:49:42,558 INFO L82 GeneralOperation]: Start removeDead. Operand has 1621 places, 1792 transitions, 5516 flow [2023-09-01 06:49:42,647 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1621 places, 1792 transitions, 5516 flow [2023-09-01 06:49:42,647 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:49:42,647 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1621 places, 1792 transitions, 5516 flow [2023-09-01 06:49:42,647 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1621 places, 1792 transitions, 5516 flow [2023-09-01 06:49:42,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1621 places, 1792 transitions, 5516 flow [2023-09-01 06:49:45,658 INFO L130 PetriNetUnfolder]: 424/3421 cut-off events. [2023-09-01 06:49:45,658 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-09-01 06:49:45,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4451 conditions, 3421 events. 424/3421 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 12622 event pairs, 0 based on Foata normal form. 0/2702 useless extension candidates. Maximal degree in co-relation 4305. Up to 86 conditions per place. [2023-09-01 06:49:46,814 INFO L119 LiptonReduction]: Number of co-enabled transitions 2958480 [2023-09-01 06:50:06,817 INFO L134 LiptonReduction]: Checked pairs total: 7989378 [2023-09-01 06:50:06,818 INFO L136 LiptonReduction]: Total number of compositions: 1391 [2023-09-01 06:50:06,819 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:50:06,819 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:50:06,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:50:07,354 INFO L130 PetriNetUnfolder]: 330/1415 cut-off events. [2023-09-01 06:50:07,355 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-09-01 06:50:07,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:50:07,355 INFO L208 CegarLoopForPetriNet]: trace histogram [43, 42, 42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:50:07,355 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:50:07,355 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:50:07,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1434599153, now seen corresponding path program 1 times [2023-09-01 06:50:07,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:50:07,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963013093] [2023-09-01 06:50:07,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:50:07,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:50:07,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:50:07,428 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:50:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:50:07,510 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:50:07,510 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:50:07,510 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:50:07,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-09-01 06:50:07,511 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:50:07,511 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:50:07,511 WARN L233 ceAbstractionStarter]: 42 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:50:07,511 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 43 thread instances. [2023-09-01 06:50:07,615 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:50:07,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1658 places, 1833 transitions, 5687 flow [2023-09-01 06:50:10,493 INFO L130 PetriNetUnfolder]: 434/3501 cut-off events. [2023-09-01 06:50:10,494 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-09-01 06:50:10,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4577 conditions, 3501 events. 434/3501 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 12820 event pairs, 0 based on Foata normal form. 0/2765 useless extension candidates. Maximal degree in co-relation 4430. Up to 88 conditions per place. [2023-09-01 06:50:10,782 INFO L82 GeneralOperation]: Start removeDead. Operand has 1658 places, 1833 transitions, 5687 flow [2023-09-01 06:50:10,846 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1658 places, 1833 transitions, 5687 flow [2023-09-01 06:50:10,847 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:50:10,847 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1658 places, 1833 transitions, 5687 flow [2023-09-01 06:50:10,847 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1658 places, 1833 transitions, 5687 flow [2023-09-01 06:50:10,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1658 places, 1833 transitions, 5687 flow [2023-09-01 06:50:13,614 INFO L130 PetriNetUnfolder]: 434/3501 cut-off events. [2023-09-01 06:50:13,614 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-09-01 06:50:13,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4577 conditions, 3501 events. 434/3501 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 12820 event pairs, 0 based on Foata normal form. 0/2765 useless extension candidates. Maximal degree in co-relation 4430. Up to 88 conditions per place. [2023-09-01 06:50:14,845 INFO L119 LiptonReduction]: Number of co-enabled transitions 3099440 [2023-09-01 06:50:35,248 INFO L134 LiptonReduction]: Checked pairs total: 8248744 [2023-09-01 06:50:35,248 INFO L136 LiptonReduction]: Total number of compositions: 1410 [2023-09-01 06:50:35,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:50:35,250 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:50:35,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:50:35,868 INFO L130 PetriNetUnfolder]: 381/1492 cut-off events. [2023-09-01 06:50:35,868 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-09-01 06:50:35,869 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:50:35,869 INFO L208 CegarLoopForPetriNet]: trace histogram [44, 43, 43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:50:35,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:50:35,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:50:35,869 INFO L85 PathProgramCache]: Analyzing trace with hash 941428195, now seen corresponding path program 1 times [2023-09-01 06:50:35,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:50:35,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981604915] [2023-09-01 06:50:35,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:50:35,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:50:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:50:35,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:50:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:50:36,024 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:50:36,024 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:50:36,024 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:50:36,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-09-01 06:50:36,025 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:50:36,025 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:50:36,025 WARN L233 ceAbstractionStarter]: 43 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:50:36,025 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 44 thread instances. [2023-09-01 06:50:36,123 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:50:36,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1695 places, 1874 transitions, 5860 flow [2023-09-01 06:50:38,955 INFO L130 PetriNetUnfolder]: 444/3581 cut-off events. [2023-09-01 06:50:38,955 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-09-01 06:50:39,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4704 conditions, 3581 events. 444/3581 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 13215 event pairs, 0 based on Foata normal form. 0/2828 useless extension candidates. Maximal degree in co-relation 4556. Up to 90 conditions per place. [2023-09-01 06:50:39,287 INFO L82 GeneralOperation]: Start removeDead. Operand has 1695 places, 1874 transitions, 5860 flow [2023-09-01 06:50:39,501 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1695 places, 1874 transitions, 5860 flow [2023-09-01 06:50:39,501 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:50:39,501 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1695 places, 1874 transitions, 5860 flow [2023-09-01 06:50:39,501 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1695 places, 1874 transitions, 5860 flow [2023-09-01 06:50:39,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1695 places, 1874 transitions, 5860 flow [2023-09-01 06:50:42,344 INFO L130 PetriNetUnfolder]: 444/3581 cut-off events. [2023-09-01 06:50:42,344 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-09-01 06:50:42,605 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4704 conditions, 3581 events. 444/3581 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 13215 event pairs, 0 based on Foata normal form. 0/2828 useless extension candidates. Maximal degree in co-relation 4556. Up to 90 conditions per place. [2023-09-01 06:50:43,543 INFO L119 LiptonReduction]: Number of co-enabled transitions 3243680 [2023-09-01 06:51:03,975 INFO L134 LiptonReduction]: Checked pairs total: 8627287 [2023-09-01 06:51:03,976 INFO L136 LiptonReduction]: Total number of compositions: 1437 [2023-09-01 06:51:03,977 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:51:03,977 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:51:03,977 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:51:04,585 INFO L130 PetriNetUnfolder]: 390/1527 cut-off events. [2023-09-01 06:51:04,585 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-09-01 06:51:04,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:51:04,585 INFO L208 CegarLoopForPetriNet]: trace histogram [45, 44, 44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:51:04,585 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:51:04,586 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:51:04,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1054744501, now seen corresponding path program 1 times [2023-09-01 06:51:04,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:51:04,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990947284] [2023-09-01 06:51:04,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:51:04,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:51:04,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:51:04,646 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:51:04,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:51:04,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:51:04,731 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:51:04,731 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:51:04,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-09-01 06:51:04,731 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:51:04,732 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:51:04,732 WARN L233 ceAbstractionStarter]: 44 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:51:04,732 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 45 thread instances. [2023-09-01 06:51:04,830 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:51:04,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1732 places, 1915 transitions, 6035 flow [2023-09-01 06:51:07,799 INFO L130 PetriNetUnfolder]: 454/3661 cut-off events. [2023-09-01 06:51:07,800 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-09-01 06:51:08,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4832 conditions, 3661 events. 454/3661 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 13509 event pairs, 0 based on Foata normal form. 0/2891 useless extension candidates. Maximal degree in co-relation 4683. Up to 92 conditions per place. [2023-09-01 06:51:08,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 1732 places, 1915 transitions, 6035 flow [2023-09-01 06:51:08,181 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1732 places, 1915 transitions, 6035 flow [2023-09-01 06:51:08,181 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:51:08,181 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1732 places, 1915 transitions, 6035 flow [2023-09-01 06:51:08,181 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1732 places, 1915 transitions, 6035 flow [2023-09-01 06:51:08,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1732 places, 1915 transitions, 6035 flow [2023-09-01 06:51:11,212 INFO L130 PetriNetUnfolder]: 454/3661 cut-off events. [2023-09-01 06:51:11,212 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-09-01 06:51:11,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4832 conditions, 3661 events. 454/3661 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 13509 event pairs, 0 based on Foata normal form. 0/2891 useless extension candidates. Maximal degree in co-relation 4683. Up to 92 conditions per place. [2023-09-01 06:51:12,569 INFO L119 LiptonReduction]: Number of co-enabled transitions 3391200 [2023-09-01 06:51:33,946 INFO L134 LiptonReduction]: Checked pairs total: 9067494 [2023-09-01 06:51:33,946 INFO L136 LiptonReduction]: Total number of compositions: 1471 [2023-09-01 06:51:33,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:51:33,948 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:51:33,948 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:51:34,602 INFO L130 PetriNetUnfolder]: 401/1567 cut-off events. [2023-09-01 06:51:34,602 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-09-01 06:51:34,602 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:51:34,602 INFO L208 CegarLoopForPetriNet]: trace histogram [46, 45, 45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:51:34,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:51:34,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:51:34,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1693828224, now seen corresponding path program 1 times [2023-09-01 06:51:34,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:51:34,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80542712] [2023-09-01 06:51:34,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:51:34,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:51:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:51:34,673 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:51:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:51:34,749 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:51:34,749 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:51:34,750 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:51:34,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-09-01 06:51:34,750 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:51:34,750 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:51:34,750 WARN L233 ceAbstractionStarter]: 45 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:51:34,750 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 46 thread instances. [2023-09-01 06:51:34,859 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:51:34,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1769 places, 1956 transitions, 6212 flow [2023-09-01 06:51:38,081 INFO L130 PetriNetUnfolder]: 464/3741 cut-off events. [2023-09-01 06:51:38,082 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-09-01 06:51:38,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4961 conditions, 3741 events. 464/3741 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 13812 event pairs, 0 based on Foata normal form. 0/2954 useless extension candidates. Maximal degree in co-relation 4811. Up to 94 conditions per place. [2023-09-01 06:51:38,384 INFO L82 GeneralOperation]: Start removeDead. Operand has 1769 places, 1956 transitions, 6212 flow [2023-09-01 06:51:38,451 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1769 places, 1956 transitions, 6212 flow [2023-09-01 06:51:38,451 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:51:38,451 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1769 places, 1956 transitions, 6212 flow [2023-09-01 06:51:38,451 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1769 places, 1956 transitions, 6212 flow [2023-09-01 06:51:38,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1769 places, 1956 transitions, 6212 flow [2023-09-01 06:51:42,501 INFO L130 PetriNetUnfolder]: 464/3741 cut-off events. [2023-09-01 06:51:42,501 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-09-01 06:51:42,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4961 conditions, 3741 events. 464/3741 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 13812 event pairs, 0 based on Foata normal form. 0/2954 useless extension candidates. Maximal degree in co-relation 4811. Up to 94 conditions per place. [2023-09-01 06:51:43,888 INFO L119 LiptonReduction]: Number of co-enabled transitions 3542000 [2023-09-01 06:52:06,098 INFO L134 LiptonReduction]: Checked pairs total: 9534825 [2023-09-01 06:52:06,098 INFO L136 LiptonReduction]: Total number of compositions: 1508 [2023-09-01 06:52:06,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:52:06,101 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:52:06,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:52:06,892 INFO L130 PetriNetUnfolder]: 410/1602 cut-off events. [2023-09-01 06:52:06,892 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-09-01 06:52:06,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:52:06,893 INFO L208 CegarLoopForPetriNet]: trace histogram [47, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:52:06,893 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:52:06,893 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:52:06,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1049291856, now seen corresponding path program 1 times [2023-09-01 06:52:06,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:52:06,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641156155] [2023-09-01 06:52:06,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:52:06,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:52:06,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:06,968 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:52:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:07,070 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:52:07,070 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:52:07,070 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:52:07,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-09-01 06:52:07,071 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:52:07,071 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:52:07,071 WARN L233 ceAbstractionStarter]: 46 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:52:07,071 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 47 thread instances. [2023-09-01 06:52:07,198 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:52:07,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1806 places, 1997 transitions, 6391 flow [2023-09-01 06:52:10,698 INFO L130 PetriNetUnfolder]: 474/3821 cut-off events. [2023-09-01 06:52:10,698 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-09-01 06:52:11,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5091 conditions, 3821 events. 474/3821 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 14030 event pairs, 0 based on Foata normal form. 0/3017 useless extension candidates. Maximal degree in co-relation 4940. Up to 96 conditions per place. [2023-09-01 06:52:11,047 INFO L82 GeneralOperation]: Start removeDead. Operand has 1806 places, 1997 transitions, 6391 flow [2023-09-01 06:52:11,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1806 places, 1997 transitions, 6391 flow [2023-09-01 06:52:11,116 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:52:11,116 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1806 places, 1997 transitions, 6391 flow [2023-09-01 06:52:11,116 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1806 places, 1997 transitions, 6391 flow [2023-09-01 06:52:11,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1806 places, 1997 transitions, 6391 flow [2023-09-01 06:52:14,429 INFO L130 PetriNetUnfolder]: 474/3821 cut-off events. [2023-09-01 06:52:14,429 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-09-01 06:52:14,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5091 conditions, 3821 events. 474/3821 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 14030 event pairs, 0 based on Foata normal form. 0/3017 useless extension candidates. Maximal degree in co-relation 4940. Up to 96 conditions per place. [2023-09-01 06:52:15,824 INFO L119 LiptonReduction]: Number of co-enabled transitions 3696080 [2023-09-01 06:52:38,549 INFO L134 LiptonReduction]: Checked pairs total: 9928388 [2023-09-01 06:52:38,549 INFO L136 LiptonReduction]: Total number of compositions: 1537 [2023-09-01 06:52:38,550 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 06:52:38,550 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;@dc9260f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 06:52:38,551 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 06:52:39,141 INFO L130 PetriNetUnfolder]: 419/1637 cut-off events. [2023-09-01 06:52:39,141 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-09-01 06:52:39,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 06:52:39,141 INFO L208 CegarLoopForPetriNet]: trace histogram [48, 47, 47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 06:52:39,141 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 06:52:39,142 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 06:52:39,142 INFO L85 PathProgramCache]: Analyzing trace with hash 1507556322, now seen corresponding path program 1 times [2023-09-01 06:52:39,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 06:52:39,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592190665] [2023-09-01 06:52:39,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 06:52:39,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 06:52:39,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:39,261 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 06:52:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 06:52:39,356 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 06:52:39,357 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 06:52:39,357 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 06:52:39,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-09-01 06:52:39,357 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 06:52:39,358 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 06:52:39,358 WARN L233 ceAbstractionStarter]: 47 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 06:52:39,358 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 48 thread instances. [2023-09-01 06:52:39,457 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 06:52:39,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1843 places, 2038 transitions, 6572 flow [2023-09-01 06:52:42,827 INFO L130 PetriNetUnfolder]: 484/3901 cut-off events. [2023-09-01 06:52:42,827 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-09-01 06:52:43,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5222 conditions, 3901 events. 484/3901 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 14375 event pairs, 0 based on Foata normal form. 0/3080 useless extension candidates. Maximal degree in co-relation 5070. Up to 98 conditions per place. [2023-09-01 06:52:43,213 INFO L82 GeneralOperation]: Start removeDead. Operand has 1843 places, 2038 transitions, 6572 flow [2023-09-01 06:52:43,481 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1843 places, 2038 transitions, 6572 flow [2023-09-01 06:52:43,481 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 06:52:43,481 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1843 places, 2038 transitions, 6572 flow [2023-09-01 06:52:43,481 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1843 places, 2038 transitions, 6572 flow [2023-09-01 06:52:43,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1843 places, 2038 transitions, 6572 flow [2023-09-01 06:52:46,762 INFO L130 PetriNetUnfolder]: 484/3901 cut-off events. [2023-09-01 06:52:46,763 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-09-01 06:52:47,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5222 conditions, 3901 events. 484/3901 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 14375 event pairs, 0 based on Foata normal form. 0/3080 useless extension candidates. Maximal degree in co-relation 5070. Up to 98 conditions per place. [2023-09-01 06:52:48,478 INFO L119 LiptonReduction]: Number of co-enabled transitions 3853440 Killed by 15