./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 12:04:19,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 12:04:19,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 12:04:19,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 12:04:19,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 12:04:19,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 12:04:19,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 12:04:19,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 12:04:19,539 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 12:04:19,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 12:04:19,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 12:04:19,547 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 12:04:19,549 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 12:04:19,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 12:04:19,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 12:04:19,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 12:04:19,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 12:04:19,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 12:04:19,560 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 12:04:19,561 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 12:04:19,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 12:04:19,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 12:04:19,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 12:04:19,573 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 12:04:19,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 12:04:19,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 12:04:19,580 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 12:04:19,581 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 12:04:19,582 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 12:04:19,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 12:04:19,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 12:04:19,586 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 12:04:19,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 12:04:19,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 12:04:19,589 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 12:04:19,589 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 12:04:19,590 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 12:04:19,590 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 12:04:19,590 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 12:04:19,591 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 12:04:19,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 12:04:19,592 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 12:04:19,622 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 12:04:19,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 12:04:19,623 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 12:04:19,623 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 12:04:19,624 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 12:04:19,624 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 12:04:19,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 12:04:19,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 12:04:19,626 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 12:04:19,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 12:04:19,627 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 12:04:19,627 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 12:04:19,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 12:04:19,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 12:04:19,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 12:04:19,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 12:04:19,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 12:04:19,628 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 12:04:19,628 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 12:04:19,628 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 12:04:19,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 12:04:19,629 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 12:04:19,629 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 12:04:19,629 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 12:04:19,629 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 12:04:19,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 12:04:19,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 12:04:19,630 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 12:04:19,630 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 12:04:19,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 12:04:19,631 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 12:04:19,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 12:04:19,631 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 12:04:19,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 12:04:19,632 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 12:04:19,632 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 12:04:19,632 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 12:04:19,632 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43a7b886f1e454dafac7facab2674c64a0fa591a6bf106acb1f8b320d6c92508 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 12:04:19,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 12:04:19,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 12:04:19,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 12:04:19,948 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 12:04:19,949 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 12:04:19,950 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2023-08-31 12:04:21,125 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 12:04:21,398 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 12:04:21,398 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i [2023-08-31 12:04:21,410 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977f6b854/936cbef4a79349beb71d9b9a51baa20a/FLAG3e021f004 [2023-08-31 12:04:21,421 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977f6b854/936cbef4a79349beb71d9b9a51baa20a [2023-08-31 12:04:21,423 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 12:04:21,424 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 12:04:21,425 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 12:04:21,425 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 12:04:21,428 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 12:04:21,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:04:21" (1/1) ... [2023-08-31 12:04:21,429 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25b0e19 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:21, skipping insertion in model container [2023-08-31 12:04:21,429 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 12:04:21" (1/1) ... [2023-08-31 12:04:21,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 12:04:21,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 12:04:21,592 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 12:04:21,710 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i[30633,30646] [2023-08-31 12:04:21,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 12:04:21,726 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 12:04:21,742 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-31 12:04:21,759 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/45_monabsex1_vs.i[30633,30646] [2023-08-31 12:04:21,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 12:04:21,791 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 12:04:21,791 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 12:04:21,791 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 12:04:21,805 INFO L208 MainTranslator]: Completed translation [2023-08-31 12:04:21,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:21 WrapperNode [2023-08-31 12:04:21,805 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 12:04:21,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 12:04:21,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 12:04:21,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 12:04:21,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:21" (1/1) ... [2023-08-31 12:04:21,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:21" (1/1) ... [2023-08-31 12:04:21,858 INFO L138 Inliner]: procedures = 171, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 31 [2023-08-31 12:04:21,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 12:04:21,860 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 12:04:21,860 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 12:04:21,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 12:04:21,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:21" (1/1) ... [2023-08-31 12:04:21,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:21" (1/1) ... [2023-08-31 12:04:21,872 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:21" (1/1) ... [2023-08-31 12:04:21,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:21" (1/1) ... [2023-08-31 12:04:21,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:21" (1/1) ... [2023-08-31 12:04:21,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:21" (1/1) ... [2023-08-31 12:04:21,894 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:21" (1/1) ... [2023-08-31 12:04:21,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:21" (1/1) ... [2023-08-31 12:04:21,900 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 12:04:21,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 12:04:21,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 12:04:21,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 12:04:21,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:21" (1/1) ... [2023-08-31 12:04:21,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 12:04:21,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 12:04:21,938 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 12:04:21,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 12:04:21,972 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-31 12:04:21,973 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-31 12:04:21,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 12:04:21,973 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 12:04:21,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 12:04:21,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 12:04:21,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 12:04:21,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 12:04:21,974 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 12:04:21,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 12:04:21,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 12:04:21,975 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 12:04:22,128 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 12:04:22,130 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 12:04:22,235 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 12:04:22,258 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 12:04:22,259 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-08-31 12:04:22,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:04:22 BoogieIcfgContainer [2023-08-31 12:04:22,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 12:04:22,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 12:04:22,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 12:04:22,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 12:04:22,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 12:04:21" (1/3) ... [2023-08-31 12:04:22,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbe4e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 12:04:22, skipping insertion in model container [2023-08-31 12:04:22,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 12:04:21" (2/3) ... [2023-08-31 12:04:22,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bbe4e39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 12:04:22, skipping insertion in model container [2023-08-31 12:04:22,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 12:04:22" (3/3) ... [2023-08-31 12:04:22,267 INFO L112 eAbstractionObserver]: Analyzing ICFG 45_monabsex1_vs.i [2023-08-31 12:04:22,273 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 12:04:22,281 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 12:04:22,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-31 12:04:22,282 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 12:04:22,309 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:22,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 48 places, 46 transitions, 97 flow [2023-08-31 12:04:22,375 INFO L130 PetriNetUnfolder]: 2/56 cut-off events. [2023-08-31 12:04:22,375 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 12:04:22,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61 conditions, 56 events. 2/56 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/49 useless extension candidates. Maximal degree in co-relation 30. Up to 4 conditions per place. [2023-08-31 12:04:22,378 INFO L82 GeneralOperation]: Start removeDead. Operand has 48 places, 46 transitions, 97 flow [2023-08-31 12:04:22,381 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 42 places, 39 transitions, 83 flow [2023-08-31 12:04:22,383 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:22,395 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 42 places, 39 transitions, 83 flow [2023-08-31 12:04:22,402 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 42 places, 39 transitions, 83 flow [2023-08-31 12:04:22,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 42 places, 39 transitions, 83 flow [2023-08-31 12:04:22,425 INFO L130 PetriNetUnfolder]: 0/43 cut-off events. [2023-08-31 12:04:22,431 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 12:04:22,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 43 events. 0/43 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 19 event pairs, 0 based on Foata normal form. 0/41 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-31 12:04:22,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 168 [2023-08-31 12:04:23,745 INFO L134 LiptonReduction]: Checked pairs total: 189 [2023-08-31 12:04:23,745 INFO L136 LiptonReduction]: Total number of compositions: 42 [2023-08-31 12:04:23,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:23,769 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:23,769 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:23,774 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2023-08-31 12:04:23,774 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 12:04:23,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:23,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-31 12:04:23,775 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:23,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:23,781 INFO L85 PathProgramCache]: Analyzing trace with hash 6454927, now seen corresponding path program 1 times [2023-08-31 12:04:23,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:23,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752301992] [2023-08-31 12:04:23,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:23,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:23,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:23,894 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:23,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:23,943 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:23,944 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:23,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 12:04:23,946 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:23,948 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:23,949 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:23,949 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 12:04:23,959 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:23,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 59 transitions, 130 flow [2023-08-31 12:04:23,982 INFO L130 PetriNetUnfolder]: 3/81 cut-off events. [2023-08-31 12:04:23,982 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 12:04:23,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 3/81 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 103 event pairs, 0 based on Foata normal form. 0/70 useless extension candidates. Maximal degree in co-relation 57. Up to 6 conditions per place. [2023-08-31 12:04:23,984 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 59 transitions, 130 flow [2023-08-31 12:04:23,984 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 52 transitions, 116 flow [2023-08-31 12:04:23,985 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:23,985 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 52 transitions, 116 flow [2023-08-31 12:04:23,985 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 52 transitions, 116 flow [2023-08-31 12:04:23,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 52 transitions, 116 flow [2023-08-31 12:04:23,995 INFO L130 PetriNetUnfolder]: 0/62 cut-off events. [2023-08-31 12:04:23,995 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 12:04:23,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 62 events. 0/62 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 50 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-31 12:04:23,996 INFO L119 LiptonReduction]: Number of co-enabled transitions 648 [2023-08-31 12:04:25,127 INFO L134 LiptonReduction]: Checked pairs total: 928 [2023-08-31 12:04:25,128 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-08-31 12:04:25,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:25,130 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:25,130 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:25,135 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-31 12:04:25,135 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 12:04:25,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:25,135 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-08-31 12:04:25,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:25,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:25,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1987000944, now seen corresponding path program 1 times [2023-08-31 12:04:25,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:25,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504662425] [2023-08-31 12:04:25,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:25,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:25,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:25,158 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:25,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:25,184 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:25,184 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:25,185 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:25,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 12:04:25,185 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:25,186 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:25,186 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:25,186 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 12:04:25,198 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:25,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 72 transitions, 165 flow [2023-08-31 12:04:25,215 INFO L130 PetriNetUnfolder]: 4/106 cut-off events. [2023-08-31 12:04:25,215 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 12:04:25,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122 conditions, 106 events. 4/106 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 170 event pairs, 0 based on Foata normal form. 0/91 useless extension candidates. Maximal degree in co-relation 85. Up to 8 conditions per place. [2023-08-31 12:04:25,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 72 transitions, 165 flow [2023-08-31 12:04:25,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 65 transitions, 151 flow [2023-08-31 12:04:25,217 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:25,217 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 72 places, 65 transitions, 151 flow [2023-08-31 12:04:25,217 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 72 places, 65 transitions, 151 flow [2023-08-31 12:04:25,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 65 transitions, 151 flow [2023-08-31 12:04:25,228 INFO L130 PetriNetUnfolder]: 0/81 cut-off events. [2023-08-31 12:04:25,229 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 12:04:25,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 81 events. 0/81 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 86 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2023-08-31 12:04:25,230 INFO L119 LiptonReduction]: Number of co-enabled transitions 1440 [2023-08-31 12:04:26,402 INFO L134 LiptonReduction]: Checked pairs total: 2499 [2023-08-31 12:04:26,403 INFO L136 LiptonReduction]: Total number of compositions: 57 [2023-08-31 12:04:26,404 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:26,405 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:26,405 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:26,409 INFO L130 PetriNetUnfolder]: 0/22 cut-off events. [2023-08-31 12:04:26,409 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 12:04:26,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:26,410 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 1, 1, 1, 1, 1] [2023-08-31 12:04:26,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:26,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1332923968, now seen corresponding path program 1 times [2023-08-31 12:04:26,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:26,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332235461] [2023-08-31 12:04:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:26,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:26,429 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:26,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:26,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:26,443 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:26,443 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:26,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 12:04:26,443 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:26,444 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:26,444 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:26,444 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 12:04:26,458 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:26,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 93 places, 85 transitions, 202 flow [2023-08-31 12:04:26,474 INFO L130 PetriNetUnfolder]: 5/131 cut-off events. [2023-08-31 12:04:26,474 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 12:04:26,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 154 conditions, 131 events. 5/131 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 224 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 114. Up to 10 conditions per place. [2023-08-31 12:04:26,475 INFO L82 GeneralOperation]: Start removeDead. Operand has 93 places, 85 transitions, 202 flow [2023-08-31 12:04:26,476 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 87 places, 78 transitions, 188 flow [2023-08-31 12:04:26,476 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:26,476 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 87 places, 78 transitions, 188 flow [2023-08-31 12:04:26,476 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 87 places, 78 transitions, 188 flow [2023-08-31 12:04:26,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 87 places, 78 transitions, 188 flow [2023-08-31 12:04:26,488 INFO L130 PetriNetUnfolder]: 0/100 cut-off events. [2023-08-31 12:04:26,488 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 12:04:26,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 100 events. 0/100 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 119 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2023-08-31 12:04:26,490 INFO L119 LiptonReduction]: Number of co-enabled transitions 2544 [2023-08-31 12:04:27,753 INFO L134 LiptonReduction]: Checked pairs total: 4512 [2023-08-31 12:04:27,753 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-31 12:04:27,755 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:27,755 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:27,756 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:27,763 INFO L130 PetriNetUnfolder]: 0/29 cut-off events. [2023-08-31 12:04:27,764 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 12:04:27,764 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:27,764 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 12:04:27,764 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:27,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:27,765 INFO L85 PathProgramCache]: Analyzing trace with hash -404399015, now seen corresponding path program 1 times [2023-08-31 12:04:27,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:27,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003707195] [2023-08-31 12:04:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:27,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:27,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:27,783 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:27,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:27,800 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:27,800 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:27,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 12:04:27,801 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:27,801 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:27,802 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:27,802 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 12:04:27,818 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:27,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 98 transitions, 241 flow [2023-08-31 12:04:27,836 INFO L130 PetriNetUnfolder]: 6/156 cut-off events. [2023-08-31 12:04:27,836 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 12:04:27,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 156 events. 6/156 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 295 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 144. Up to 12 conditions per place. [2023-08-31 12:04:27,837 INFO L82 GeneralOperation]: Start removeDead. Operand has 108 places, 98 transitions, 241 flow [2023-08-31 12:04:27,838 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 91 transitions, 227 flow [2023-08-31 12:04:27,838 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:27,838 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 102 places, 91 transitions, 227 flow [2023-08-31 12:04:27,839 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 102 places, 91 transitions, 227 flow [2023-08-31 12:04:27,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 91 transitions, 227 flow [2023-08-31 12:04:27,851 INFO L130 PetriNetUnfolder]: 0/119 cut-off events. [2023-08-31 12:04:27,851 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 12:04:27,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 119 events. 0/119 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 155 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 0. Up to 6 conditions per place. [2023-08-31 12:04:27,854 INFO L119 LiptonReduction]: Number of co-enabled transitions 3960 [2023-08-31 12:04:29,303 INFO L134 LiptonReduction]: Checked pairs total: 7124 [2023-08-31 12:04:29,304 INFO L136 LiptonReduction]: Total number of compositions: 80 [2023-08-31 12:04:29,306 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:29,308 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:29,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:29,313 INFO L130 PetriNetUnfolder]: 0/36 cut-off events. [2023-08-31 12:04:29,313 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 12:04:29,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:29,314 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:04:29,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:29,314 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:29,314 INFO L85 PathProgramCache]: Analyzing trace with hash 1680792628, now seen corresponding path program 1 times [2023-08-31 12:04:29,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:29,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618349605] [2023-08-31 12:04:29,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:29,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:29,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:29,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:29,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:29,362 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:29,362 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:29,362 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:29,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 12:04:29,363 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:29,363 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:29,373 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:29,373 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 12:04:29,409 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:29,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 111 transitions, 282 flow [2023-08-31 12:04:29,426 INFO L130 PetriNetUnfolder]: 7/181 cut-off events. [2023-08-31 12:04:29,427 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 12:04:29,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221 conditions, 181 events. 7/181 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 333 event pairs, 0 based on Foata normal form. 0/154 useless extension candidates. Maximal degree in co-relation 175. Up to 14 conditions per place. [2023-08-31 12:04:29,430 INFO L82 GeneralOperation]: Start removeDead. Operand has 123 places, 111 transitions, 282 flow [2023-08-31 12:04:29,431 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 104 transitions, 268 flow [2023-08-31 12:04:29,432 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:29,433 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 104 transitions, 268 flow [2023-08-31 12:04:29,433 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 104 transitions, 268 flow [2023-08-31 12:04:29,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 104 transitions, 268 flow [2023-08-31 12:04:29,446 INFO L130 PetriNetUnfolder]: 0/138 cut-off events. [2023-08-31 12:04:29,448 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 12:04:29,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178 conditions, 138 events. 0/138 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 173 event pairs, 0 based on Foata normal form. 0/126 useless extension candidates. Maximal degree in co-relation 0. Up to 7 conditions per place. [2023-08-31 12:04:29,452 INFO L119 LiptonReduction]: Number of co-enabled transitions 5688 [2023-08-31 12:04:30,994 INFO L134 LiptonReduction]: Checked pairs total: 9481 [2023-08-31 12:04:30,994 INFO L136 LiptonReduction]: Total number of compositions: 89 [2023-08-31 12:04:30,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:30,996 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:30,997 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:31,002 INFO L130 PetriNetUnfolder]: 0/43 cut-off events. [2023-08-31 12:04:31,002 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 12:04:31,003 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:31,003 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:04:31,003 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:31,004 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:31,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1095721535, now seen corresponding path program 1 times [2023-08-31 12:04:31,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:31,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361368344] [2023-08-31 12:04:31,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:31,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:31,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:31,045 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:31,046 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:31,046 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:31,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 12:04:31,047 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:31,047 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:31,047 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:31,048 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 12:04:31,067 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:31,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 138 places, 124 transitions, 325 flow [2023-08-31 12:04:31,089 INFO L130 PetriNetUnfolder]: 8/206 cut-off events. [2023-08-31 12:04:31,089 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 12:04:31,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 206 events. 8/206 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 431 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 207. Up to 16 conditions per place. [2023-08-31 12:04:31,091 INFO L82 GeneralOperation]: Start removeDead. Operand has 138 places, 124 transitions, 325 flow [2023-08-31 12:04:31,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 117 transitions, 311 flow [2023-08-31 12:04:31,092 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:31,092 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 117 transitions, 311 flow [2023-08-31 12:04:31,093 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 117 transitions, 311 flow [2023-08-31 12:04:31,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 117 transitions, 311 flow [2023-08-31 12:04:31,109 INFO L130 PetriNetUnfolder]: 0/157 cut-off events. [2023-08-31 12:04:31,109 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 12:04:31,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 157 events. 0/157 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 227 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 0. Up to 8 conditions per place. [2023-08-31 12:04:31,114 INFO L119 LiptonReduction]: Number of co-enabled transitions 7728 [2023-08-31 12:04:32,822 INFO L134 LiptonReduction]: Checked pairs total: 14802 [2023-08-31 12:04:32,822 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-31 12:04:32,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:32,824 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:32,824 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:32,829 INFO L130 PetriNetUnfolder]: 0/50 cut-off events. [2023-08-31 12:04:32,829 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 12:04:32,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:32,829 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:04:32,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:32,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:32,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1548347405, now seen corresponding path program 1 times [2023-08-31 12:04:32,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:32,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353627212] [2023-08-31 12:04:32,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:32,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:32,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:32,883 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:32,900 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:32,901 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:32,901 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:32,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 12:04:32,901 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:32,902 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:32,902 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:32,902 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 12:04:32,923 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:32,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 137 transitions, 370 flow [2023-08-31 12:04:32,956 INFO L130 PetriNetUnfolder]: 9/231 cut-off events. [2023-08-31 12:04:32,956 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 12:04:32,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292 conditions, 231 events. 9/231 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 480 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 240. Up to 18 conditions per place. [2023-08-31 12:04:32,960 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 137 transitions, 370 flow [2023-08-31 12:04:32,962 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 130 transitions, 356 flow [2023-08-31 12:04:32,962 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:32,962 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 130 transitions, 356 flow [2023-08-31 12:04:32,963 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 130 transitions, 356 flow [2023-08-31 12:04:32,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 130 transitions, 356 flow [2023-08-31 12:04:32,984 INFO L130 PetriNetUnfolder]: 0/176 cut-off events. [2023-08-31 12:04:32,984 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 12:04:32,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 237 conditions, 176 events. 0/176 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 265 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 0. Up to 9 conditions per place. [2023-08-31 12:04:32,991 INFO L119 LiptonReduction]: Number of co-enabled transitions 10080 [2023-08-31 12:04:34,795 INFO L134 LiptonReduction]: Checked pairs total: 17072 [2023-08-31 12:04:34,796 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-08-31 12:04:34,797 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:34,798 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:34,798 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:34,804 INFO L130 PetriNetUnfolder]: 0/57 cut-off events. [2023-08-31 12:04:34,804 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 12:04:34,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:34,804 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:04:34,805 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:34,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:34,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1297698474, now seen corresponding path program 1 times [2023-08-31 12:04:34,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:34,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834102975] [2023-08-31 12:04:34,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:34,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:34,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:34,855 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:34,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:34,887 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:34,894 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:34,901 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:34,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 12:04:34,902 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:34,903 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:34,907 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:34,907 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 12:04:34,935 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:34,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 150 transitions, 417 flow [2023-08-31 12:04:34,970 INFO L130 PetriNetUnfolder]: 10/256 cut-off events. [2023-08-31 12:04:34,970 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 12:04:34,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 256 events. 10/256 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 527 event pairs, 0 based on Foata normal form. 0/217 useless extension candidates. Maximal degree in co-relation 274. Up to 20 conditions per place. [2023-08-31 12:04:34,978 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 150 transitions, 417 flow [2023-08-31 12:04:34,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 143 transitions, 403 flow [2023-08-31 12:04:34,979 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:34,979 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 143 transitions, 403 flow [2023-08-31 12:04:34,979 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 143 transitions, 403 flow [2023-08-31 12:04:34,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 143 transitions, 403 flow [2023-08-31 12:04:35,013 INFO L130 PetriNetUnfolder]: 0/195 cut-off events. [2023-08-31 12:04:35,014 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 12:04:35,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 268 conditions, 195 events. 0/195 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 291 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 0. Up to 10 conditions per place. [2023-08-31 12:04:35,023 INFO L119 LiptonReduction]: Number of co-enabled transitions 12744 [2023-08-31 12:04:37,059 INFO L134 LiptonReduction]: Checked pairs total: 20524 [2023-08-31 12:04:37,059 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-31 12:04:37,061 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:37,067 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:37,067 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:37,075 INFO L130 PetriNetUnfolder]: 0/64 cut-off events. [2023-08-31 12:04:37,075 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 12:04:37,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:37,076 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:04:37,076 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:37,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:37,076 INFO L85 PathProgramCache]: Analyzing trace with hash -195761667, now seen corresponding path program 1 times [2023-08-31 12:04:37,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:37,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477331165] [2023-08-31 12:04:37,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:37,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:37,113 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:37,130 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:37,131 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:37,131 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:37,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 12:04:37,131 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:37,132 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:37,132 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:37,132 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 12:04:37,154 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:37,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 183 places, 163 transitions, 466 flow [2023-08-31 12:04:37,198 INFO L130 PetriNetUnfolder]: 11/281 cut-off events. [2023-08-31 12:04:37,198 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 12:04:37,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 281 events. 11/281 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 573 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 311. Up to 22 conditions per place. [2023-08-31 12:04:37,200 INFO L82 GeneralOperation]: Start removeDead. Operand has 183 places, 163 transitions, 466 flow [2023-08-31 12:04:37,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 156 transitions, 452 flow [2023-08-31 12:04:37,201 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:37,201 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 156 transitions, 452 flow [2023-08-31 12:04:37,202 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 156 transitions, 452 flow [2023-08-31 12:04:37,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 156 transitions, 452 flow [2023-08-31 12:04:37,222 INFO L130 PetriNetUnfolder]: 0/214 cut-off events. [2023-08-31 12:04:37,223 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 12:04:37,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300 conditions, 214 events. 0/214 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 313 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 0. Up to 11 conditions per place. [2023-08-31 12:04:37,228 INFO L119 LiptonReduction]: Number of co-enabled transitions 15720 [2023-08-31 12:04:39,410 INFO L134 LiptonReduction]: Checked pairs total: 27293 [2023-08-31 12:04:39,410 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-31 12:04:39,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:39,413 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:39,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:39,420 INFO L130 PetriNetUnfolder]: 0/71 cut-off events. [2023-08-31 12:04:39,420 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 12:04:39,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:39,421 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:04:39,421 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:39,421 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:39,422 INFO L85 PathProgramCache]: Analyzing trace with hash 931296591, now seen corresponding path program 1 times [2023-08-31 12:04:39,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:39,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445678248] [2023-08-31 12:04:39,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:39,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:39,464 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:39,499 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:39,499 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:39,499 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:39,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 12:04:39,500 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:39,500 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:39,501 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:39,501 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 12:04:39,537 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:39,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 198 places, 176 transitions, 517 flow [2023-08-31 12:04:39,577 INFO L130 PetriNetUnfolder]: 12/306 cut-off events. [2023-08-31 12:04:39,577 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 12:04:39,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406 conditions, 306 events. 12/306 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 642 event pairs, 0 based on Foata normal form. 0/259 useless extension candidates. Maximal degree in co-relation 349. Up to 24 conditions per place. [2023-08-31 12:04:39,580 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 176 transitions, 517 flow [2023-08-31 12:04:39,581 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 192 places, 169 transitions, 503 flow [2023-08-31 12:04:39,582 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:39,582 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 192 places, 169 transitions, 503 flow [2023-08-31 12:04:39,582 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 192 places, 169 transitions, 503 flow [2023-08-31 12:04:39,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 192 places, 169 transitions, 503 flow [2023-08-31 12:04:39,610 INFO L130 PetriNetUnfolder]: 0/233 cut-off events. [2023-08-31 12:04:39,611 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 12:04:39,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333 conditions, 233 events. 0/233 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 354 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 0. Up to 12 conditions per place. [2023-08-31 12:04:39,617 INFO L119 LiptonReduction]: Number of co-enabled transitions 19008 [2023-08-31 12:04:41,897 INFO L134 LiptonReduction]: Checked pairs total: 34988 [2023-08-31 12:04:41,897 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-31 12:04:41,898 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:41,898 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:41,898 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:41,908 INFO L130 PetriNetUnfolder]: 0/78 cut-off events. [2023-08-31 12:04:41,909 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 12:04:41,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:41,909 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:04:41,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:41,910 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:41,910 INFO L85 PathProgramCache]: Analyzing trace with hash -701245716, now seen corresponding path program 1 times [2023-08-31 12:04:41,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:41,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877711085] [2023-08-31 12:04:41,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:41,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:41,934 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:41,964 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:41,964 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:41,965 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:41,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 12:04:41,965 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:41,966 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:41,966 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:41,966 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 12:04:41,991 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:41,994 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 213 places, 189 transitions, 570 flow [2023-08-31 12:04:42,036 INFO L130 PetriNetUnfolder]: 13/331 cut-off events. [2023-08-31 12:04:42,036 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 12:04:42,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 446 conditions, 331 events. 13/331 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 698 event pairs, 0 based on Foata normal form. 0/280 useless extension candidates. Maximal degree in co-relation 388. Up to 26 conditions per place. [2023-08-31 12:04:42,041 INFO L82 GeneralOperation]: Start removeDead. Operand has 213 places, 189 transitions, 570 flow [2023-08-31 12:04:42,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 182 transitions, 556 flow [2023-08-31 12:04:42,043 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:42,043 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 182 transitions, 556 flow [2023-08-31 12:04:42,043 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 182 transitions, 556 flow [2023-08-31 12:04:42,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 182 transitions, 556 flow [2023-08-31 12:04:42,072 INFO L130 PetriNetUnfolder]: 0/252 cut-off events. [2023-08-31 12:04:42,072 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 12:04:42,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 367 conditions, 252 events. 0/252 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 386 event pairs, 0 based on Foata normal form. 0/228 useless extension candidates. Maximal degree in co-relation 0. Up to 13 conditions per place. [2023-08-31 12:04:42,079 INFO L119 LiptonReduction]: Number of co-enabled transitions 22608 [2023-08-31 12:04:44,393 INFO L134 LiptonReduction]: Checked pairs total: 36144 [2023-08-31 12:04:44,393 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-08-31 12:04:44,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:44,397 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:44,397 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:44,409 INFO L130 PetriNetUnfolder]: 0/85 cut-off events. [2023-08-31 12:04:44,409 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 12:04:44,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:44,410 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:04:44,410 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:44,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:44,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1530815621, now seen corresponding path program 1 times [2023-08-31 12:04:44,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:44,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764540588] [2023-08-31 12:04:44,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:44,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:44,439 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:44,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:44,474 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:44,475 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:44,475 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:44,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 12:04:44,475 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:44,479 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:44,479 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:44,479 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 12:04:44,506 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:44,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 202 transitions, 625 flow [2023-08-31 12:04:44,559 INFO L130 PetriNetUnfolder]: 14/356 cut-off events. [2023-08-31 12:04:44,559 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 12:04:44,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 356 events. 14/356 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 737 event pairs, 0 based on Foata normal form. 0/301 useless extension candidates. Maximal degree in co-relation 428. Up to 28 conditions per place. [2023-08-31 12:04:44,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 202 transitions, 625 flow [2023-08-31 12:04:44,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 195 transitions, 611 flow [2023-08-31 12:04:44,565 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:44,565 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 195 transitions, 611 flow [2023-08-31 12:04:44,566 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 195 transitions, 611 flow [2023-08-31 12:04:44,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 195 transitions, 611 flow [2023-08-31 12:04:44,600 INFO L130 PetriNetUnfolder]: 0/271 cut-off events. [2023-08-31 12:04:44,601 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 12:04:44,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 402 conditions, 271 events. 0/271 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 398 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 0. Up to 14 conditions per place. [2023-08-31 12:04:44,610 INFO L119 LiptonReduction]: Number of co-enabled transitions 26520 [2023-08-31 12:04:47,092 INFO L134 LiptonReduction]: Checked pairs total: 46604 [2023-08-31 12:04:47,092 INFO L136 LiptonReduction]: Total number of compositions: 159 [2023-08-31 12:04:47,094 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:47,094 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:47,094 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:47,103 INFO L130 PetriNetUnfolder]: 0/92 cut-off events. [2023-08-31 12:04:47,104 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 12:04:47,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:47,104 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:04:47,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:47,105 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash 543735605, now seen corresponding path program 1 times [2023-08-31 12:04:47,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:47,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081084038] [2023-08-31 12:04:47,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:47,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:47,126 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:47,147 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:47,147 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:47,148 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:47,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 12:04:47,148 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:47,149 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:47,149 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:47,149 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-31 12:04:47,178 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:47,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 215 transitions, 682 flow [2023-08-31 12:04:47,261 INFO L130 PetriNetUnfolder]: 15/381 cut-off events. [2023-08-31 12:04:47,262 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 12:04:47,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 381 events. 15/381 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 792 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 469. Up to 30 conditions per place. [2023-08-31 12:04:47,265 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 215 transitions, 682 flow [2023-08-31 12:04:47,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 237 places, 208 transitions, 668 flow [2023-08-31 12:04:47,267 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:47,267 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 237 places, 208 transitions, 668 flow [2023-08-31 12:04:47,267 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 237 places, 208 transitions, 668 flow [2023-08-31 12:04:47,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 237 places, 208 transitions, 668 flow [2023-08-31 12:04:47,309 INFO L130 PetriNetUnfolder]: 0/290 cut-off events. [2023-08-31 12:04:47,310 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 12:04:47,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 290 events. 0/290 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 424 event pairs, 0 based on Foata normal form. 0/262 useless extension candidates. Maximal degree in co-relation 0. Up to 15 conditions per place. [2023-08-31 12:04:47,319 INFO L119 LiptonReduction]: Number of co-enabled transitions 30744 [2023-08-31 12:04:49,838 INFO L134 LiptonReduction]: Checked pairs total: 50814 [2023-08-31 12:04:49,839 INFO L136 LiptonReduction]: Total number of compositions: 173 [2023-08-31 12:04:49,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:49,840 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:49,840 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:49,850 INFO L130 PetriNetUnfolder]: 0/99 cut-off events. [2023-08-31 12:04:49,850 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 12:04:49,851 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:49,851 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:04:49,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:49,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:49,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1716500161, now seen corresponding path program 1 times [2023-08-31 12:04:49,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:49,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720727392] [2023-08-31 12:04:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:49,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:49,872 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:49,890 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:49,891 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:49,891 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:49,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 12:04:49,891 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:49,892 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:49,892 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:49,892 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-08-31 12:04:49,938 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:49,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 258 places, 228 transitions, 741 flow [2023-08-31 12:04:49,998 INFO L130 PetriNetUnfolder]: 16/406 cut-off events. [2023-08-31 12:04:49,998 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 12:04:50,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 572 conditions, 406 events. 16/406 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 851 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 511. Up to 32 conditions per place. [2023-08-31 12:04:50,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 258 places, 228 transitions, 741 flow [2023-08-31 12:04:50,008 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 252 places, 221 transitions, 727 flow [2023-08-31 12:04:50,008 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:50,009 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 252 places, 221 transitions, 727 flow [2023-08-31 12:04:50,009 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 252 places, 221 transitions, 727 flow [2023-08-31 12:04:50,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 252 places, 221 transitions, 727 flow [2023-08-31 12:04:50,051 INFO L130 PetriNetUnfolder]: 0/309 cut-off events. [2023-08-31 12:04:50,051 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 12:04:50,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 475 conditions, 309 events. 0/309 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 456 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 0. Up to 16 conditions per place. [2023-08-31 12:04:50,061 INFO L119 LiptonReduction]: Number of co-enabled transitions 35280 [2023-08-31 12:04:52,612 INFO L134 LiptonReduction]: Checked pairs total: 60794 [2023-08-31 12:04:52,612 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-08-31 12:04:52,613 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:52,613 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:52,614 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:52,636 INFO L130 PetriNetUnfolder]: 0/106 cut-off events. [2023-08-31 12:04:52,636 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 12:04:52,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:52,636 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:04:52,636 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:52,637 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:52,637 INFO L85 PathProgramCache]: Analyzing trace with hash -726656419, now seen corresponding path program 1 times [2023-08-31 12:04:52,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:52,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569611187] [2023-08-31 12:04:52,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:52,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:52,659 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:52,686 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:52,687 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:52,688 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:52,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 12:04:52,689 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:52,690 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:52,690 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:52,690 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-08-31 12:04:52,720 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:52,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 273 places, 241 transitions, 802 flow [2023-08-31 12:04:52,783 INFO L130 PetriNetUnfolder]: 17/431 cut-off events. [2023-08-31 12:04:52,784 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 12:04:52,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 431 events. 17/431 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 910 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 554. Up to 34 conditions per place. [2023-08-31 12:04:52,791 INFO L82 GeneralOperation]: Start removeDead. Operand has 273 places, 241 transitions, 802 flow [2023-08-31 12:04:52,793 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 267 places, 234 transitions, 788 flow [2023-08-31 12:04:52,793 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:52,793 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 267 places, 234 transitions, 788 flow [2023-08-31 12:04:52,794 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 267 places, 234 transitions, 788 flow [2023-08-31 12:04:52,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 267 places, 234 transitions, 788 flow [2023-08-31 12:04:52,830 INFO L130 PetriNetUnfolder]: 0/328 cut-off events. [2023-08-31 12:04:52,831 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 12:04:52,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 328 events. 0/328 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 493 event pairs, 0 based on Foata normal form. 0/296 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2023-08-31 12:04:52,840 INFO L119 LiptonReduction]: Number of co-enabled transitions 40128 [2023-08-31 12:04:55,762 INFO L134 LiptonReduction]: Checked pairs total: 69987 [2023-08-31 12:04:55,762 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-08-31 12:04:55,763 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:55,763 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:55,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:55,775 INFO L130 PetriNetUnfolder]: 0/113 cut-off events. [2023-08-31 12:04:55,776 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 12:04:55,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:55,776 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:04:55,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:55,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:55,777 INFO L85 PathProgramCache]: Analyzing trace with hash 998417391, now seen corresponding path program 1 times [2023-08-31 12:04:55,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:55,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789146305] [2023-08-31 12:04:55,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:55,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:55,805 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:55,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:55,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:55,831 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:55,831 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:55,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 12:04:55,831 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:55,832 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:55,832 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:55,832 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-08-31 12:04:55,865 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:55,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 288 places, 254 transitions, 865 flow [2023-08-31 12:04:55,933 INFO L130 PetriNetUnfolder]: 18/456 cut-off events. [2023-08-31 12:04:55,933 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 12:04:55,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 661 conditions, 456 events. 18/456 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 973 event pairs, 0 based on Foata normal form. 0/385 useless extension candidates. Maximal degree in co-relation 598. Up to 36 conditions per place. [2023-08-31 12:04:55,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 288 places, 254 transitions, 865 flow [2023-08-31 12:04:55,943 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 282 places, 247 transitions, 851 flow [2023-08-31 12:04:55,943 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:55,943 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 282 places, 247 transitions, 851 flow [2023-08-31 12:04:55,943 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 282 places, 247 transitions, 851 flow [2023-08-31 12:04:55,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 282 places, 247 transitions, 851 flow [2023-08-31 12:04:56,015 INFO L130 PetriNetUnfolder]: 0/347 cut-off events. [2023-08-31 12:04:56,016 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 12:04:56,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 347 events. 0/347 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 520 event pairs, 0 based on Foata normal form. 0/313 useless extension candidates. Maximal degree in co-relation 0. Up to 18 conditions per place. [2023-08-31 12:04:56,028 INFO L119 LiptonReduction]: Number of co-enabled transitions 45288 [2023-08-31 12:04:58,996 INFO L134 LiptonReduction]: Checked pairs total: 76927 [2023-08-31 12:04:58,996 INFO L136 LiptonReduction]: Total number of compositions: 200 [2023-08-31 12:04:58,997 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:04:58,998 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:04:58,998 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:04:59,013 INFO L130 PetriNetUnfolder]: 0/120 cut-off events. [2023-08-31 12:04:59,013 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 12:04:59,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:04:59,013 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:04:59,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:04:59,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:04:59,014 INFO L85 PathProgramCache]: Analyzing trace with hash -2111521664, now seen corresponding path program 1 times [2023-08-31 12:04:59,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:04:59,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597466059] [2023-08-31 12:04:59,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:04:59,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:04:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:59,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:04:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:04:59,071 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:04:59,072 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:04:59,072 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:04:59,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 12:04:59,072 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:04:59,073 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:04:59,073 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:04:59,073 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-08-31 12:04:59,106 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:59,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 303 places, 267 transitions, 930 flow [2023-08-31 12:04:59,214 INFO L130 PetriNetUnfolder]: 19/481 cut-off events. [2023-08-31 12:04:59,215 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 12:04:59,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 707 conditions, 481 events. 19/481 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1024 event pairs, 0 based on Foata normal form. 0/406 useless extension candidates. Maximal degree in co-relation 643. Up to 38 conditions per place. [2023-08-31 12:04:59,222 INFO L82 GeneralOperation]: Start removeDead. Operand has 303 places, 267 transitions, 930 flow [2023-08-31 12:04:59,224 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 260 transitions, 916 flow [2023-08-31 12:04:59,224 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:59,224 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 297 places, 260 transitions, 916 flow [2023-08-31 12:04:59,224 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 297 places, 260 transitions, 916 flow [2023-08-31 12:04:59,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 260 transitions, 916 flow [2023-08-31 12:04:59,278 INFO L130 PetriNetUnfolder]: 0/366 cut-off events. [2023-08-31 12:04:59,278 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 12:04:59,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 592 conditions, 366 events. 0/366 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 555 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 0. Up to 19 conditions per place. [2023-08-31 12:04:59,294 INFO L119 LiptonReduction]: Number of co-enabled transitions 50760 [2023-08-31 12:05:02,282 INFO L134 LiptonReduction]: Checked pairs total: 88147 [2023-08-31 12:05:02,282 INFO L136 LiptonReduction]: Total number of compositions: 207 [2023-08-31 12:05:02,283 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:02,283 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:02,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:02,296 INFO L130 PetriNetUnfolder]: 0/127 cut-off events. [2023-08-31 12:05:02,296 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 12:05:02,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:02,296 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:05:02,297 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:02,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:02,297 INFO L85 PathProgramCache]: Analyzing trace with hash -436080617, now seen corresponding path program 1 times [2023-08-31 12:05:02,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:02,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318857594] [2023-08-31 12:05:02,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:02,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:02,337 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:02,362 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:02,363 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:02,363 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:02,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 12:05:02,363 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:02,364 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:02,364 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:02,364 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-08-31 12:05:02,400 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:02,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 280 transitions, 997 flow [2023-08-31 12:05:02,484 INFO L130 PetriNetUnfolder]: 20/506 cut-off events. [2023-08-31 12:05:02,484 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 12:05:02,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 754 conditions, 506 events. 20/506 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1082 event pairs, 0 based on Foata normal form. 0/427 useless extension candidates. Maximal degree in co-relation 689. Up to 40 conditions per place. [2023-08-31 12:05:02,495 INFO L82 GeneralOperation]: Start removeDead. Operand has 318 places, 280 transitions, 997 flow [2023-08-31 12:05:02,497 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 312 places, 273 transitions, 983 flow [2023-08-31 12:05:02,497 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:02,497 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 312 places, 273 transitions, 983 flow [2023-08-31 12:05:02,497 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 312 places, 273 transitions, 983 flow [2023-08-31 12:05:02,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 312 places, 273 transitions, 983 flow [2023-08-31 12:05:02,559 INFO L130 PetriNetUnfolder]: 0/385 cut-off events. [2023-08-31 12:05:02,560 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 12:05:02,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 633 conditions, 385 events. 0/385 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 579 event pairs, 0 based on Foata normal form. 0/347 useless extension candidates. Maximal degree in co-relation 0. Up to 20 conditions per place. [2023-08-31 12:05:02,573 INFO L119 LiptonReduction]: Number of co-enabled transitions 56544 [2023-08-31 12:05:05,676 INFO L134 LiptonReduction]: Checked pairs total: 96577 [2023-08-31 12:05:05,676 INFO L136 LiptonReduction]: Total number of compositions: 223 [2023-08-31 12:05:05,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:05,677 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:05,677 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:05,693 INFO L130 PetriNetUnfolder]: 0/134 cut-off events. [2023-08-31 12:05:05,693 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 12:05:05,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:05,693 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:05:05,694 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:05,694 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:05,694 INFO L85 PathProgramCache]: Analyzing trace with hash -2073735619, now seen corresponding path program 1 times [2023-08-31 12:05:05,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:05,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225232000] [2023-08-31 12:05:05,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:05,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:05,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:05,722 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:05,749 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:05,749 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:05,749 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:05,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-31 12:05:05,750 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:05,750 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:05,750 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:05,750 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-08-31 12:05:05,790 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:05,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 333 places, 293 transitions, 1066 flow [2023-08-31 12:05:05,885 INFO L130 PetriNetUnfolder]: 21/531 cut-off events. [2023-08-31 12:05:05,886 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 12:05:05,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 802 conditions, 531 events. 21/531 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1155 event pairs, 0 based on Foata normal form. 0/448 useless extension candidates. Maximal degree in co-relation 736. Up to 42 conditions per place. [2023-08-31 12:05:05,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 333 places, 293 transitions, 1066 flow [2023-08-31 12:05:05,900 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 327 places, 286 transitions, 1052 flow [2023-08-31 12:05:05,900 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:05,901 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 327 places, 286 transitions, 1052 flow [2023-08-31 12:05:05,901 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 327 places, 286 transitions, 1052 flow [2023-08-31 12:05:05,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 327 places, 286 transitions, 1052 flow [2023-08-31 12:05:05,968 INFO L130 PetriNetUnfolder]: 0/404 cut-off events. [2023-08-31 12:05:05,969 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 12:05:05,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 675 conditions, 404 events. 0/404 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 626 event pairs, 0 based on Foata normal form. 0/364 useless extension candidates. Maximal degree in co-relation 0. Up to 21 conditions per place. [2023-08-31 12:05:05,984 INFO L119 LiptonReduction]: Number of co-enabled transitions 62640 [2023-08-31 12:05:09,288 INFO L134 LiptonReduction]: Checked pairs total: 114127 [2023-08-31 12:05:09,289 INFO L136 LiptonReduction]: Total number of compositions: 229 [2023-08-31 12:05:09,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:09,290 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:09,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:09,305 INFO L130 PetriNetUnfolder]: 0/141 cut-off events. [2023-08-31 12:05:09,306 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-08-31 12:05:09,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:09,306 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:05:09,306 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:09,306 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:09,307 INFO L85 PathProgramCache]: Analyzing trace with hash 703113054, now seen corresponding path program 1 times [2023-08-31 12:05:09,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:09,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139874813] [2023-08-31 12:05:09,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:09,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:09,333 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:09,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:09,363 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:09,364 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:09,364 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:09,364 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 12:05:09,364 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:09,366 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:09,366 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:09,366 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-08-31 12:05:09,403 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:09,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 348 places, 306 transitions, 1137 flow [2023-08-31 12:05:09,504 INFO L130 PetriNetUnfolder]: 22/556 cut-off events. [2023-08-31 12:05:09,505 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 12:05:09,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 556 events. 22/556 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1195 event pairs, 0 based on Foata normal form. 0/469 useless extension candidates. Maximal degree in co-relation 784. Up to 44 conditions per place. [2023-08-31 12:05:09,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 348 places, 306 transitions, 1137 flow [2023-08-31 12:05:09,520 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 342 places, 299 transitions, 1123 flow [2023-08-31 12:05:09,520 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:09,520 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 342 places, 299 transitions, 1123 flow [2023-08-31 12:05:09,520 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 342 places, 299 transitions, 1123 flow [2023-08-31 12:05:09,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 342 places, 299 transitions, 1123 flow [2023-08-31 12:05:09,593 INFO L130 PetriNetUnfolder]: 0/423 cut-off events. [2023-08-31 12:05:09,593 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 12:05:09,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 423 events. 0/423 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 644 event pairs, 0 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 0. Up to 22 conditions per place. [2023-08-31 12:05:09,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 69048 [2023-08-31 12:05:13,145 INFO L134 LiptonReduction]: Checked pairs total: 122265 [2023-08-31 12:05:13,145 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-08-31 12:05:13,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:13,146 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:13,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:13,159 INFO L130 PetriNetUnfolder]: 0/148 cut-off events. [2023-08-31 12:05:13,160 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-08-31 12:05:13,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:13,160 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:05:13,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:13,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:13,161 INFO L85 PathProgramCache]: Analyzing trace with hash -1189803271, now seen corresponding path program 1 times [2023-08-31 12:05:13,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:13,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595685515] [2023-08-31 12:05:13,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:13,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:13,189 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:13,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:13,221 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:13,221 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:13,221 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:13,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 12:05:13,222 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:13,222 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:13,222 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:13,223 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-08-31 12:05:13,261 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:13,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 319 transitions, 1210 flow [2023-08-31 12:05:13,373 INFO L130 PetriNetUnfolder]: 23/581 cut-off events. [2023-08-31 12:05:13,373 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 12:05:13,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 901 conditions, 581 events. 23/581 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1262 event pairs, 0 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 833. Up to 46 conditions per place. [2023-08-31 12:05:13,389 INFO L82 GeneralOperation]: Start removeDead. Operand has 363 places, 319 transitions, 1210 flow [2023-08-31 12:05:13,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 357 places, 312 transitions, 1196 flow [2023-08-31 12:05:13,392 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:13,392 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 357 places, 312 transitions, 1196 flow [2023-08-31 12:05:13,392 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 357 places, 312 transitions, 1196 flow [2023-08-31 12:05:13,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 312 transitions, 1196 flow [2023-08-31 12:05:13,473 INFO L130 PetriNetUnfolder]: 0/442 cut-off events. [2023-08-31 12:05:13,474 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 12:05:13,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 762 conditions, 442 events. 0/442 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 693 event pairs, 0 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 0. Up to 23 conditions per place. [2023-08-31 12:05:13,497 INFO L119 LiptonReduction]: Number of co-enabled transitions 75768 [2023-08-31 12:05:17,146 INFO L134 LiptonReduction]: Checked pairs total: 136103 [2023-08-31 12:05:17,146 INFO L136 LiptonReduction]: Total number of compositions: 244 [2023-08-31 12:05:17,147 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:17,147 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:17,148 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:17,163 INFO L130 PetriNetUnfolder]: 0/155 cut-off events. [2023-08-31 12:05:17,163 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-08-31 12:05:17,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:17,164 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:05:17,164 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:17,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:17,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1360953036, now seen corresponding path program 1 times [2023-08-31 12:05:17,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:17,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084842644] [2023-08-31 12:05:17,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:17,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:17,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:17,190 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:17,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:17,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:17,224 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:17,224 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:17,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 12:05:17,225 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:17,225 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:17,225 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:17,225 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-08-31 12:05:17,272 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:17,277 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 378 places, 332 transitions, 1285 flow [2023-08-31 12:05:17,395 INFO L130 PetriNetUnfolder]: 24/606 cut-off events. [2023-08-31 12:05:17,396 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 12:05:17,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 952 conditions, 606 events. 24/606 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1314 event pairs, 0 based on Foata normal form. 0/511 useless extension candidates. Maximal degree in co-relation 883. Up to 48 conditions per place. [2023-08-31 12:05:17,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 378 places, 332 transitions, 1285 flow [2023-08-31 12:05:17,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 372 places, 325 transitions, 1271 flow [2023-08-31 12:05:17,414 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:17,414 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 372 places, 325 transitions, 1271 flow [2023-08-31 12:05:17,414 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 372 places, 325 transitions, 1271 flow [2023-08-31 12:05:17,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 325 transitions, 1271 flow [2023-08-31 12:05:17,493 INFO L130 PetriNetUnfolder]: 0/461 cut-off events. [2023-08-31 12:05:17,493 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 12:05:17,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 807 conditions, 461 events. 0/461 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 712 event pairs, 0 based on Foata normal form. 0/415 useless extension candidates. Maximal degree in co-relation 0. Up to 24 conditions per place. [2023-08-31 12:05:17,519 INFO L119 LiptonReduction]: Number of co-enabled transitions 82800 [2023-08-31 12:05:21,441 INFO L134 LiptonReduction]: Checked pairs total: 138916 [2023-08-31 12:05:21,441 INFO L136 LiptonReduction]: Total number of compositions: 262 [2023-08-31 12:05:21,442 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:21,442 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:21,442 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:21,460 INFO L130 PetriNetUnfolder]: 0/162 cut-off events. [2023-08-31 12:05:21,460 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-08-31 12:05:21,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:21,461 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:05:21,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:21,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:21,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1038278731, now seen corresponding path program 1 times [2023-08-31 12:05:21,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:21,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294691865] [2023-08-31 12:05:21,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:21,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:21,498 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:21,532 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:21,533 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:21,533 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:21,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-31 12:05:21,533 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:21,534 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:21,534 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:21,534 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-08-31 12:05:21,577 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:21,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 393 places, 345 transitions, 1362 flow [2023-08-31 12:05:21,685 INFO L130 PetriNetUnfolder]: 25/631 cut-off events. [2023-08-31 12:05:21,685 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 12:05:21,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1004 conditions, 631 events. 25/631 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1367 event pairs, 0 based on Foata normal form. 0/532 useless extension candidates. Maximal degree in co-relation 934. Up to 50 conditions per place. [2023-08-31 12:05:21,698 INFO L82 GeneralOperation]: Start removeDead. Operand has 393 places, 345 transitions, 1362 flow [2023-08-31 12:05:21,699 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 387 places, 338 transitions, 1348 flow [2023-08-31 12:05:21,700 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:21,700 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 387 places, 338 transitions, 1348 flow [2023-08-31 12:05:21,700 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 387 places, 338 transitions, 1348 flow [2023-08-31 12:05:21,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 387 places, 338 transitions, 1348 flow [2023-08-31 12:05:21,777 INFO L130 PetriNetUnfolder]: 0/480 cut-off events. [2023-08-31 12:05:21,778 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 12:05:21,778 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 480 events. 0/480 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 744 event pairs, 0 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 0. Up to 25 conditions per place. [2023-08-31 12:05:21,805 INFO L119 LiptonReduction]: Number of co-enabled transitions 90144 [2023-08-31 12:05:25,493 INFO L134 LiptonReduction]: Checked pairs total: 146106 [2023-08-31 12:05:25,493 INFO L136 LiptonReduction]: Total number of compositions: 274 [2023-08-31 12:05:25,494 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:25,494 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:25,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:25,511 INFO L130 PetriNetUnfolder]: 0/169 cut-off events. [2023-08-31 12:05:25,511 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-08-31 12:05:25,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:25,511 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:05:25,512 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:25,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:25,512 INFO L85 PathProgramCache]: Analyzing trace with hash 631698955, now seen corresponding path program 1 times [2023-08-31 12:05:25,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:25,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424654372] [2023-08-31 12:05:25,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:25,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:25,536 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:25,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:25,606 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:25,608 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:25,608 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:25,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-31 12:05:25,608 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:25,608 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:25,609 WARN L233 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:25,609 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2023-08-31 12:05:25,651 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:25,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 408 places, 358 transitions, 1441 flow [2023-08-31 12:05:25,746 INFO L130 PetriNetUnfolder]: 26/656 cut-off events. [2023-08-31 12:05:25,747 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 12:05:25,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1057 conditions, 656 events. 26/656 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1438 event pairs, 0 based on Foata normal form. 0/553 useless extension candidates. Maximal degree in co-relation 986. Up to 52 conditions per place. [2023-08-31 12:05:25,760 INFO L82 GeneralOperation]: Start removeDead. Operand has 408 places, 358 transitions, 1441 flow [2023-08-31 12:05:25,763 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 402 places, 351 transitions, 1427 flow [2023-08-31 12:05:25,763 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:25,763 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 402 places, 351 transitions, 1427 flow [2023-08-31 12:05:25,763 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 402 places, 351 transitions, 1427 flow [2023-08-31 12:05:25,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 402 places, 351 transitions, 1427 flow [2023-08-31 12:05:25,837 INFO L130 PetriNetUnfolder]: 0/499 cut-off events. [2023-08-31 12:05:25,837 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 12:05:25,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 499 events. 0/499 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 784 event pairs, 0 based on Foata normal form. 0/449 useless extension candidates. Maximal degree in co-relation 0. Up to 26 conditions per place. [2023-08-31 12:05:25,865 INFO L119 LiptonReduction]: Number of co-enabled transitions 97800 [2023-08-31 12:05:29,652 INFO L134 LiptonReduction]: Checked pairs total: 170639 [2023-08-31 12:05:29,652 INFO L136 LiptonReduction]: Total number of compositions: 282 [2023-08-31 12:05:29,653 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:29,653 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:29,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:29,670 INFO L130 PetriNetUnfolder]: 0/176 cut-off events. [2023-08-31 12:05:29,670 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-08-31 12:05:29,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:29,670 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:05:29,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:29,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:29,670 INFO L85 PathProgramCache]: Analyzing trace with hash 572272946, now seen corresponding path program 1 times [2023-08-31 12:05:29,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:29,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929103613] [2023-08-31 12:05:29,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:29,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:29,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:29,700 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:29,733 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:29,733 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:29,733 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:29,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-31 12:05:29,734 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:29,734 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:29,734 WARN L233 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:29,734 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2023-08-31 12:05:29,780 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:29,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 423 places, 371 transitions, 1522 flow [2023-08-31 12:05:29,963 INFO L130 PetriNetUnfolder]: 27/681 cut-off events. [2023-08-31 12:05:29,963 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 12:05:29,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1111 conditions, 681 events. 27/681 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1490 event pairs, 0 based on Foata normal form. 0/574 useless extension candidates. Maximal degree in co-relation 1039. Up to 54 conditions per place. [2023-08-31 12:05:29,975 INFO L82 GeneralOperation]: Start removeDead. Operand has 423 places, 371 transitions, 1522 flow [2023-08-31 12:05:29,977 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 417 places, 364 transitions, 1508 flow [2023-08-31 12:05:29,977 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:29,977 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 417 places, 364 transitions, 1508 flow [2023-08-31 12:05:29,978 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 417 places, 364 transitions, 1508 flow [2023-08-31 12:05:29,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 417 places, 364 transitions, 1508 flow [2023-08-31 12:05:30,085 INFO L130 PetriNetUnfolder]: 0/518 cut-off events. [2023-08-31 12:05:30,086 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 12:05:30,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 948 conditions, 518 events. 0/518 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 807 event pairs, 0 based on Foata normal form. 0/466 useless extension candidates. Maximal degree in co-relation 0. Up to 27 conditions per place. [2023-08-31 12:05:30,117 INFO L119 LiptonReduction]: Number of co-enabled transitions 105768 [2023-08-31 12:05:34,264 INFO L134 LiptonReduction]: Checked pairs total: 196410 [2023-08-31 12:05:34,264 INFO L136 LiptonReduction]: Total number of compositions: 287 [2023-08-31 12:05:34,266 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:34,266 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:34,266 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:34,283 INFO L130 PetriNetUnfolder]: 0/183 cut-off events. [2023-08-31 12:05:34,284 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-08-31 12:05:34,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:34,284 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:05:34,284 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:34,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:34,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1602863301, now seen corresponding path program 1 times [2023-08-31 12:05:34,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:34,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597073347] [2023-08-31 12:05:34,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:34,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:34,315 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:34,348 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:34,348 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:34,348 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:34,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-31 12:05:34,348 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:34,349 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:34,349 WARN L233 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:34,349 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2023-08-31 12:05:34,400 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:34,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 438 places, 384 transitions, 1605 flow [2023-08-31 12:05:34,555 INFO L130 PetriNetUnfolder]: 28/706 cut-off events. [2023-08-31 12:05:34,556 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 12:05:34,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 706 events. 28/706 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1556 event pairs, 0 based on Foata normal form. 0/595 useless extension candidates. Maximal degree in co-relation 1093. Up to 56 conditions per place. [2023-08-31 12:05:34,574 INFO L82 GeneralOperation]: Start removeDead. Operand has 438 places, 384 transitions, 1605 flow [2023-08-31 12:05:34,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 432 places, 377 transitions, 1591 flow [2023-08-31 12:05:34,577 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:34,577 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 432 places, 377 transitions, 1591 flow [2023-08-31 12:05:34,577 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 432 places, 377 transitions, 1591 flow [2023-08-31 12:05:34,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 432 places, 377 transitions, 1591 flow [2023-08-31 12:05:34,733 INFO L130 PetriNetUnfolder]: 0/537 cut-off events. [2023-08-31 12:05:34,733 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 12:05:34,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 997 conditions, 537 events. 0/537 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 845 event pairs, 0 based on Foata normal form. 0/483 useless extension candidates. Maximal degree in co-relation 0. Up to 28 conditions per place. [2023-08-31 12:05:34,762 INFO L119 LiptonReduction]: Number of co-enabled transitions 114048 [2023-08-31 12:05:38,822 INFO L134 LiptonReduction]: Checked pairs total: 187702 [2023-08-31 12:05:38,822 INFO L136 LiptonReduction]: Total number of compositions: 310 [2023-08-31 12:05:38,823 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:38,823 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:38,823 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:38,849 INFO L130 PetriNetUnfolder]: 0/190 cut-off events. [2023-08-31 12:05:38,850 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-08-31 12:05:38,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:38,850 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:05:38,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:38,850 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:38,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1519356249, now seen corresponding path program 1 times [2023-08-31 12:05:38,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:38,850 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044156432] [2023-08-31 12:05:38,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:38,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:38,885 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:38,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:38,929 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:38,931 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:38,931 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:38,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-31 12:05:38,931 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:38,932 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:38,932 WARN L233 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:38,932 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2023-08-31 12:05:38,992 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:38,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 453 places, 397 transitions, 1690 flow [2023-08-31 12:05:39,164 INFO L130 PetriNetUnfolder]: 29/731 cut-off events. [2023-08-31 12:05:39,164 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 12:05:39,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1222 conditions, 731 events. 29/731 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1623 event pairs, 0 based on Foata normal form. 0/616 useless extension candidates. Maximal degree in co-relation 1148. Up to 58 conditions per place. [2023-08-31 12:05:39,181 INFO L82 GeneralOperation]: Start removeDead. Operand has 453 places, 397 transitions, 1690 flow [2023-08-31 12:05:39,183 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 447 places, 390 transitions, 1676 flow [2023-08-31 12:05:39,183 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:39,183 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 447 places, 390 transitions, 1676 flow [2023-08-31 12:05:39,183 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 447 places, 390 transitions, 1676 flow [2023-08-31 12:05:39,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 447 places, 390 transitions, 1676 flow [2023-08-31 12:05:39,292 INFO L130 PetriNetUnfolder]: 0/556 cut-off events. [2023-08-31 12:05:39,292 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 12:05:39,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1047 conditions, 556 events. 0/556 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 903 event pairs, 0 based on Foata normal form. 0/500 useless extension candidates. Maximal degree in co-relation 0. Up to 29 conditions per place. [2023-08-31 12:05:39,318 INFO L119 LiptonReduction]: Number of co-enabled transitions 122640 [2023-08-31 12:05:43,584 INFO L134 LiptonReduction]: Checked pairs total: 233190 [2023-08-31 12:05:43,584 INFO L136 LiptonReduction]: Total number of compositions: 309 [2023-08-31 12:05:43,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:43,585 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:43,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:43,612 INFO L130 PetriNetUnfolder]: 0/197 cut-off events. [2023-08-31 12:05:43,612 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-08-31 12:05:43,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:43,612 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:05:43,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:43,613 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:43,613 INFO L85 PathProgramCache]: Analyzing trace with hash 210638114, now seen corresponding path program 1 times [2023-08-31 12:05:43,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:43,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950306525] [2023-08-31 12:05:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:43,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:43,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:43,667 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:43,708 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:43,708 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:43,709 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:43,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-31 12:05:43,709 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:43,710 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:43,710 WARN L233 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:43,710 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2023-08-31 12:05:43,759 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:43,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 468 places, 410 transitions, 1777 flow [2023-08-31 12:05:43,993 INFO L130 PetriNetUnfolder]: 30/756 cut-off events. [2023-08-31 12:05:43,994 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 12:05:44,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 756 events. 30/756 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1669 event pairs, 0 based on Foata normal form. 0/637 useless extension candidates. Maximal degree in co-relation 1204. Up to 60 conditions per place. [2023-08-31 12:05:44,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 468 places, 410 transitions, 1777 flow [2023-08-31 12:05:44,011 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 462 places, 403 transitions, 1763 flow [2023-08-31 12:05:44,011 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:44,012 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 462 places, 403 transitions, 1763 flow [2023-08-31 12:05:44,012 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 462 places, 403 transitions, 1763 flow [2023-08-31 12:05:44,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 462 places, 403 transitions, 1763 flow [2023-08-31 12:05:44,114 INFO L130 PetriNetUnfolder]: 0/575 cut-off events. [2023-08-31 12:05:44,115 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 12:05:44,115 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1098 conditions, 575 events. 0/575 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 912 event pairs, 0 based on Foata normal form. 0/517 useless extension candidates. Maximal degree in co-relation 0. Up to 30 conditions per place. [2023-08-31 12:05:44,142 INFO L119 LiptonReduction]: Number of co-enabled transitions 131544 [2023-08-31 12:05:48,422 INFO L134 LiptonReduction]: Checked pairs total: 240148 [2023-08-31 12:05:48,423 INFO L136 LiptonReduction]: Total number of compositions: 325 [2023-08-31 12:05:48,424 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:48,424 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:48,424 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:48,446 INFO L130 PetriNetUnfolder]: 0/204 cut-off events. [2023-08-31 12:05:48,447 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-08-31 12:05:48,447 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:48,447 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:05:48,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:48,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:48,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1453492008, now seen corresponding path program 1 times [2023-08-31 12:05:48,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:48,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338849473] [2023-08-31 12:05:48,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:48,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:48,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:48,480 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:48,519 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:48,520 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:48,520 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:48,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-08-31 12:05:48,520 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:48,521 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:48,521 WARN L233 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:48,521 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2023-08-31 12:05:48,627 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:48,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 483 places, 423 transitions, 1866 flow [2023-08-31 12:05:48,774 INFO L130 PetriNetUnfolder]: 31/781 cut-off events. [2023-08-31 12:05:48,774 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 12:05:48,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1337 conditions, 781 events. 31/781 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1723 event pairs, 0 based on Foata normal form. 0/658 useless extension candidates. Maximal degree in co-relation 1261. Up to 62 conditions per place. [2023-08-31 12:05:48,795 INFO L82 GeneralOperation]: Start removeDead. Operand has 483 places, 423 transitions, 1866 flow [2023-08-31 12:05:48,798 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 477 places, 416 transitions, 1852 flow [2023-08-31 12:05:48,798 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:48,799 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 477 places, 416 transitions, 1852 flow [2023-08-31 12:05:48,799 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 477 places, 416 transitions, 1852 flow [2023-08-31 12:05:48,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 477 places, 416 transitions, 1852 flow [2023-08-31 12:05:48,913 INFO L130 PetriNetUnfolder]: 0/594 cut-off events. [2023-08-31 12:05:48,913 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 12:05:48,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1150 conditions, 594 events. 0/594 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 955 event pairs, 0 based on Foata normal form. 0/534 useless extension candidates. Maximal degree in co-relation 0. Up to 31 conditions per place. [2023-08-31 12:05:48,947 INFO L119 LiptonReduction]: Number of co-enabled transitions 140760 [2023-08-31 12:05:53,606 INFO L134 LiptonReduction]: Checked pairs total: 265868 [2023-08-31 12:05:53,606 INFO L136 LiptonReduction]: Total number of compositions: 327 [2023-08-31 12:05:53,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:53,607 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:53,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:53,631 INFO L130 PetriNetUnfolder]: 0/211 cut-off events. [2023-08-31 12:05:53,631 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-08-31 12:05:53,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:53,631 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:05:53,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:53,631 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:53,632 INFO L85 PathProgramCache]: Analyzing trace with hash -311743891, now seen corresponding path program 1 times [2023-08-31 12:05:53,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:53,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882715731] [2023-08-31 12:05:53,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:53,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:53,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:53,703 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:53,703 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:53,703 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:53,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-08-31 12:05:53,704 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:53,704 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:53,704 WARN L233 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:53,704 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2023-08-31 12:05:53,757 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:53,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 498 places, 436 transitions, 1957 flow [2023-08-31 12:05:54,009 INFO L130 PetriNetUnfolder]: 32/806 cut-off events. [2023-08-31 12:05:54,010 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 12:05:54,033 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 806 events. 32/806 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1786 event pairs, 0 based on Foata normal form. 0/679 useless extension candidates. Maximal degree in co-relation 1319. Up to 64 conditions per place. [2023-08-31 12:05:54,033 INFO L82 GeneralOperation]: Start removeDead. Operand has 498 places, 436 transitions, 1957 flow [2023-08-31 12:05:54,036 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 492 places, 429 transitions, 1943 flow [2023-08-31 12:05:54,036 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:54,036 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 492 places, 429 transitions, 1943 flow [2023-08-31 12:05:54,037 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 492 places, 429 transitions, 1943 flow [2023-08-31 12:05:54,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 492 places, 429 transitions, 1943 flow [2023-08-31 12:05:54,170 INFO L130 PetriNetUnfolder]: 0/613 cut-off events. [2023-08-31 12:05:54,170 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 12:05:54,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1203 conditions, 613 events. 0/613 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 987 event pairs, 0 based on Foata normal form. 0/551 useless extension candidates. Maximal degree in co-relation 0. Up to 32 conditions per place. [2023-08-31 12:05:54,208 INFO L119 LiptonReduction]: Number of co-enabled transitions 150288 [2023-08-31 12:05:58,889 INFO L134 LiptonReduction]: Checked pairs total: 279938 [2023-08-31 12:05:58,890 INFO L136 LiptonReduction]: Total number of compositions: 343 [2023-08-31 12:05:58,891 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:58,891 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:58,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:58,916 INFO L130 PetriNetUnfolder]: 0/218 cut-off events. [2023-08-31 12:05:58,916 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-08-31 12:05:58,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:58,917 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:05:58,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:58,917 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:58,917 INFO L85 PathProgramCache]: Analyzing trace with hash 163604669, now seen corresponding path program 1 times [2023-08-31 12:05:58,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:58,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110175765] [2023-08-31 12:05:58,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:58,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:58,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:58,954 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:58,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:59,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:59,001 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:59,001 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:59,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-08-31 12:05:59,002 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:59,002 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:59,002 WARN L233 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:59,002 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2023-08-31 12:05:59,056 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:59,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 513 places, 449 transitions, 2050 flow [2023-08-31 12:05:59,286 INFO L130 PetriNetUnfolder]: 33/831 cut-off events. [2023-08-31 12:05:59,286 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 12:05:59,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1456 conditions, 831 events. 33/831 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1847 event pairs, 0 based on Foata normal form. 0/700 useless extension candidates. Maximal degree in co-relation 1378. Up to 66 conditions per place. [2023-08-31 12:05:59,319 INFO L82 GeneralOperation]: Start removeDead. Operand has 513 places, 449 transitions, 2050 flow [2023-08-31 12:05:59,322 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 507 places, 442 transitions, 2036 flow [2023-08-31 12:05:59,323 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:59,323 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 507 places, 442 transitions, 2036 flow [2023-08-31 12:05:59,323 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 507 places, 442 transitions, 2036 flow [2023-08-31 12:05:59,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 507 places, 442 transitions, 2036 flow [2023-08-31 12:05:59,475 INFO L130 PetriNetUnfolder]: 0/632 cut-off events. [2023-08-31 12:05:59,475 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 12:05:59,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1257 conditions, 632 events. 0/632 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1031 event pairs, 0 based on Foata normal form. 0/568 useless extension candidates. Maximal degree in co-relation 0. Up to 33 conditions per place. [2023-08-31 12:05:59,514 INFO L119 LiptonReduction]: Number of co-enabled transitions 160128 [2023-08-31 12:06:04,473 INFO L134 LiptonReduction]: Checked pairs total: 271136 [2023-08-31 12:06:04,473 INFO L136 LiptonReduction]: Total number of compositions: 354 [2023-08-31 12:06:04,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:06:04,475 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:06:04,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:06:04,504 INFO L130 PetriNetUnfolder]: 0/225 cut-off events. [2023-08-31 12:06:04,504 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-08-31 12:06:04,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:06:04,504 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:06:04,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:06:04,505 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:06:04,505 INFO L85 PathProgramCache]: Analyzing trace with hash 1600950735, now seen corresponding path program 1 times [2023-08-31 12:06:04,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:06:04,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613573672] [2023-08-31 12:06:04,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:06:04,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:06:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:04,546 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:06:04,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:04,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:06:04,593 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:06:04,593 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:06:04,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-08-31 12:06:04,593 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:06:04,594 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:06:04,594 WARN L233 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:06:04,594 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2023-08-31 12:06:04,650 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:06:04,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 528 places, 462 transitions, 2145 flow [2023-08-31 12:06:05,000 INFO L130 PetriNetUnfolder]: 34/856 cut-off events. [2023-08-31 12:06:05,000 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 12:06:05,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1517 conditions, 856 events. 34/856 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1880 event pairs, 0 based on Foata normal form. 0/721 useless extension candidates. Maximal degree in co-relation 1438. Up to 68 conditions per place. [2023-08-31 12:06:05,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 528 places, 462 transitions, 2145 flow [2023-08-31 12:06:05,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 522 places, 455 transitions, 2131 flow [2023-08-31 12:06:05,032 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:06:05,032 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 522 places, 455 transitions, 2131 flow [2023-08-31 12:06:05,033 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 522 places, 455 transitions, 2131 flow [2023-08-31 12:06:05,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 522 places, 455 transitions, 2131 flow [2023-08-31 12:06:05,218 INFO L130 PetriNetUnfolder]: 0/651 cut-off events. [2023-08-31 12:06:05,218 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 12:06:05,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1312 conditions, 651 events. 0/651 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1034 event pairs, 0 based on Foata normal form. 0/585 useless extension candidates. Maximal degree in co-relation 0. Up to 34 conditions per place. [2023-08-31 12:06:05,258 INFO L119 LiptonReduction]: Number of co-enabled transitions 170280 [2023-08-31 12:06:10,286 INFO L134 LiptonReduction]: Checked pairs total: 288172 [2023-08-31 12:06:10,287 INFO L136 LiptonReduction]: Total number of compositions: 366 [2023-08-31 12:06:10,288 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:06:10,288 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:06:10,288 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:06:10,328 INFO L130 PetriNetUnfolder]: 0/232 cut-off events. [2023-08-31 12:06:10,329 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-08-31 12:06:10,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:06:10,329 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:06:10,329 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:06:10,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:06:10,330 INFO L85 PathProgramCache]: Analyzing trace with hash 925055471, now seen corresponding path program 1 times [2023-08-31 12:06:10,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:06:10,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400825748] [2023-08-31 12:06:10,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:06:10,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:06:10,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:10,369 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:06:10,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:10,422 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:06:10,423 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:06:10,423 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:06:10,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2023-08-31 12:06:10,423 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:06:10,424 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:06:10,424 WARN L233 ceAbstractionStarter]: 33 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:06:10,424 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 34 thread instances. [2023-08-31 12:06:10,479 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:06:10,482 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 543 places, 475 transitions, 2242 flow [2023-08-31 12:06:10,746 INFO L130 PetriNetUnfolder]: 35/881 cut-off events. [2023-08-31 12:06:10,746 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 12:06:10,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1579 conditions, 881 events. 35/881 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1980 event pairs, 0 based on Foata normal form. 0/742 useless extension candidates. Maximal degree in co-relation 1499. Up to 70 conditions per place. [2023-08-31 12:06:10,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 543 places, 475 transitions, 2242 flow [2023-08-31 12:06:10,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 537 places, 468 transitions, 2228 flow [2023-08-31 12:06:10,787 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:06:10,787 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 537 places, 468 transitions, 2228 flow [2023-08-31 12:06:10,787 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 537 places, 468 transitions, 2228 flow [2023-08-31 12:06:10,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 537 places, 468 transitions, 2228 flow [2023-08-31 12:06:10,934 INFO L130 PetriNetUnfolder]: 0/670 cut-off events. [2023-08-31 12:06:10,935 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 12:06:10,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1368 conditions, 670 events. 0/670 cut-off events. For 7106/7106 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1105 event pairs, 0 based on Foata normal form. 0/602 useless extension candidates. Maximal degree in co-relation 0. Up to 35 conditions per place. [2023-08-31 12:06:10,984 INFO L119 LiptonReduction]: Number of co-enabled transitions 180744 [2023-08-31 12:06:16,083 INFO L134 LiptonReduction]: Checked pairs total: 339121 [2023-08-31 12:06:16,083 INFO L136 LiptonReduction]: Total number of compositions: 370 [2023-08-31 12:06:16,084 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:06:16,084 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:06:16,084 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:06:16,113 INFO L130 PetriNetUnfolder]: 0/239 cut-off events. [2023-08-31 12:06:16,114 INFO L131 PetriNetUnfolder]: For 7106/7106 co-relation queries the response was YES. [2023-08-31 12:06:16,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:06:16,114 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:06:16,114 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:06:16,114 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:06:16,115 INFO L85 PathProgramCache]: Analyzing trace with hash -2024053188, now seen corresponding path program 1 times [2023-08-31 12:06:16,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:06:16,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871734810] [2023-08-31 12:06:16,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:06:16,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:06:16,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:16,152 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:06:16,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:16,205 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:06:16,206 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:06:16,206 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:06:16,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2023-08-31 12:06:16,206 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:06:16,207 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:06:16,207 WARN L233 ceAbstractionStarter]: 34 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:06:16,207 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 35 thread instances. [2023-08-31 12:06:16,266 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:06:16,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 558 places, 488 transitions, 2341 flow [2023-08-31 12:06:16,485 INFO L130 PetriNetUnfolder]: 36/906 cut-off events. [2023-08-31 12:06:16,485 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 12:06:16,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1642 conditions, 906 events. 36/906 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2021 event pairs, 0 based on Foata normal form. 0/763 useless extension candidates. Maximal degree in co-relation 1561. Up to 72 conditions per place. [2023-08-31 12:06:16,515 INFO L82 GeneralOperation]: Start removeDead. Operand has 558 places, 488 transitions, 2341 flow [2023-08-31 12:06:16,518 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 552 places, 481 transitions, 2327 flow [2023-08-31 12:06:16,518 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:06:16,519 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 552 places, 481 transitions, 2327 flow [2023-08-31 12:06:16,519 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 552 places, 481 transitions, 2327 flow [2023-08-31 12:06:16,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 552 places, 481 transitions, 2327 flow [2023-08-31 12:06:16,712 INFO L130 PetriNetUnfolder]: 0/689 cut-off events. [2023-08-31 12:06:16,712 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 12:06:16,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1425 conditions, 689 events. 0/689 cut-off events. For 7735/7735 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1120 event pairs, 0 based on Foata normal form. 0/619 useless extension candidates. Maximal degree in co-relation 0. Up to 36 conditions per place. [2023-08-31 12:06:16,755 INFO L119 LiptonReduction]: Number of co-enabled transitions 191520 [2023-08-31 12:06:22,298 INFO L134 LiptonReduction]: Checked pairs total: 326381 [2023-08-31 12:06:22,298 INFO L136 LiptonReduction]: Total number of compositions: 382 [2023-08-31 12:06:22,299 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:06:22,300 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:06:22,300 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:06:22,344 INFO L130 PetriNetUnfolder]: 0/246 cut-off events. [2023-08-31 12:06:22,345 INFO L131 PetriNetUnfolder]: For 7735/7735 co-relation queries the response was YES. [2023-08-31 12:06:22,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:06:22,345 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:06:22,345 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:06:22,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:06:22,345 INFO L85 PathProgramCache]: Analyzing trace with hash -530367788, now seen corresponding path program 1 times [2023-08-31 12:06:22,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:06:22,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284281627] [2023-08-31 12:06:22,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:06:22,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:06:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:22,399 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:06:22,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:22,478 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:06:22,479 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:06:22,479 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:06:22,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2023-08-31 12:06:22,479 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:06:22,480 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:06:22,480 WARN L233 ceAbstractionStarter]: 35 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:06:22,480 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 36 thread instances. [2023-08-31 12:06:22,550 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:06:22,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 573 places, 501 transitions, 2442 flow [2023-08-31 12:06:22,813 INFO L130 PetriNetUnfolder]: 37/931 cut-off events. [2023-08-31 12:06:22,813 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 12:06:22,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1706 conditions, 931 events. 37/931 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2095 event pairs, 0 based on Foata normal form. 0/784 useless extension candidates. Maximal degree in co-relation 1624. Up to 74 conditions per place. [2023-08-31 12:06:22,844 INFO L82 GeneralOperation]: Start removeDead. Operand has 573 places, 501 transitions, 2442 flow [2023-08-31 12:06:22,847 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 567 places, 494 transitions, 2428 flow [2023-08-31 12:06:22,847 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:06:22,847 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 567 places, 494 transitions, 2428 flow [2023-08-31 12:06:22,848 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 567 places, 494 transitions, 2428 flow [2023-08-31 12:06:22,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 567 places, 494 transitions, 2428 flow [2023-08-31 12:06:23,001 INFO L130 PetriNetUnfolder]: 0/708 cut-off events. [2023-08-31 12:06:23,002 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 12:06:23,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 708 events. 0/708 cut-off events. For 8400/8400 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1179 event pairs, 0 based on Foata normal form. 0/636 useless extension candidates. Maximal degree in co-relation 0. Up to 37 conditions per place. [2023-08-31 12:06:23,055 INFO L119 LiptonReduction]: Number of co-enabled transitions 202608 [2023-08-31 12:06:28,565 INFO L134 LiptonReduction]: Checked pairs total: 380126 [2023-08-31 12:06:28,565 INFO L136 LiptonReduction]: Total number of compositions: 392 [2023-08-31 12:06:28,567 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:06:28,567 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:06:28,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:06:28,608 INFO L130 PetriNetUnfolder]: 0/253 cut-off events. [2023-08-31 12:06:28,608 INFO L131 PetriNetUnfolder]: For 8400/8400 co-relation queries the response was YES. [2023-08-31 12:06:28,608 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:06:28,608 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:06:28,608 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:06:28,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:06:28,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2023966365, now seen corresponding path program 1 times [2023-08-31 12:06:28,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:06:28,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937201324] [2023-08-31 12:06:28,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:06:28,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:06:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:28,664 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:06:28,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:28,710 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:06:28,711 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:06:28,711 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:06:28,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2023-08-31 12:06:28,711 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:06:28,712 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:06:28,712 WARN L233 ceAbstractionStarter]: 36 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:06:28,712 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 37 thread instances. [2023-08-31 12:06:28,775 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:06:28,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 588 places, 514 transitions, 2545 flow [2023-08-31 12:06:29,005 INFO L130 PetriNetUnfolder]: 38/956 cut-off events. [2023-08-31 12:06:29,005 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 12:06:29,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1771 conditions, 956 events. 38/956 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2203 event pairs, 0 based on Foata normal form. 0/805 useless extension candidates. Maximal degree in co-relation 1688. Up to 76 conditions per place. [2023-08-31 12:06:29,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 588 places, 514 transitions, 2545 flow [2023-08-31 12:06:29,039 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 582 places, 507 transitions, 2531 flow [2023-08-31 12:06:29,039 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:06:29,039 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 582 places, 507 transitions, 2531 flow [2023-08-31 12:06:29,039 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 582 places, 507 transitions, 2531 flow [2023-08-31 12:06:29,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 582 places, 507 transitions, 2531 flow [2023-08-31 12:06:29,197 INFO L130 PetriNetUnfolder]: 0/727 cut-off events. [2023-08-31 12:06:29,197 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 12:06:29,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1542 conditions, 727 events. 0/727 cut-off events. For 9102/9102 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1168 event pairs, 0 based on Foata normal form. 0/653 useless extension candidates. Maximal degree in co-relation 0. Up to 38 conditions per place. [2023-08-31 12:06:29,251 INFO L119 LiptonReduction]: Number of co-enabled transitions 214008 [2023-08-31 12:06:34,851 INFO L134 LiptonReduction]: Checked pairs total: 390501 [2023-08-31 12:06:34,851 INFO L136 LiptonReduction]: Total number of compositions: 406 [2023-08-31 12:06:34,852 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:06:34,852 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:06:34,852 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:06:34,888 INFO L130 PetriNetUnfolder]: 0/260 cut-off events. [2023-08-31 12:06:34,889 INFO L131 PetriNetUnfolder]: For 9102/9102 co-relation queries the response was YES. [2023-08-31 12:06:34,889 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:06:34,889 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:06:34,889 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:06:34,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:06:34,889 INFO L85 PathProgramCache]: Analyzing trace with hash -556783564, now seen corresponding path program 1 times [2023-08-31 12:06:34,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:06:34,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757514640] [2023-08-31 12:06:34,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:06:34,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:06:34,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:34,928 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:06:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:34,978 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:06:34,979 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:06:34,979 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:06:34,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2023-08-31 12:06:34,980 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:06:34,980 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:06:34,980 WARN L233 ceAbstractionStarter]: 37 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:06:34,980 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 38 thread instances. [2023-08-31 12:06:35,045 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:06:35,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 603 places, 527 transitions, 2650 flow [2023-08-31 12:06:35,276 INFO L130 PetriNetUnfolder]: 39/981 cut-off events. [2023-08-31 12:06:35,276 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 12:06:35,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1837 conditions, 981 events. 39/981 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2183 event pairs, 0 based on Foata normal form. 0/826 useless extension candidates. Maximal degree in co-relation 1753. Up to 78 conditions per place. [2023-08-31 12:06:35,308 INFO L82 GeneralOperation]: Start removeDead. Operand has 603 places, 527 transitions, 2650 flow [2023-08-31 12:06:35,312 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 597 places, 520 transitions, 2636 flow [2023-08-31 12:06:35,312 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:06:35,312 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 597 places, 520 transitions, 2636 flow [2023-08-31 12:06:35,312 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 597 places, 520 transitions, 2636 flow [2023-08-31 12:06:35,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 597 places, 520 transitions, 2636 flow [2023-08-31 12:06:35,532 INFO L130 PetriNetUnfolder]: 0/746 cut-off events. [2023-08-31 12:06:35,533 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 12:06:35,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1602 conditions, 746 events. 0/746 cut-off events. For 9842/9842 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1206 event pairs, 0 based on Foata normal form. 0/670 useless extension candidates. Maximal degree in co-relation 0. Up to 39 conditions per place. [2023-08-31 12:06:35,585 INFO L119 LiptonReduction]: Number of co-enabled transitions 225720 [2023-08-31 12:06:41,326 INFO L134 LiptonReduction]: Checked pairs total: 411273 [2023-08-31 12:06:41,326 INFO L136 LiptonReduction]: Total number of compositions: 423 [2023-08-31 12:06:41,327 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:06:41,328 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:06:41,328 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:06:41,454 INFO L130 PetriNetUnfolder]: 0/267 cut-off events. [2023-08-31 12:06:41,454 INFO L131 PetriNetUnfolder]: For 9842/9842 co-relation queries the response was YES. [2023-08-31 12:06:41,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:06:41,455 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:06:41,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:06:41,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:06:41,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1623610401, now seen corresponding path program 1 times [2023-08-31 12:06:41,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:06:41,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584099606] [2023-08-31 12:06:41,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:06:41,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:06:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:41,513 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:06:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:41,565 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:06:41,565 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:06:41,565 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:06:41,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2023-08-31 12:06:41,566 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:06:41,566 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:06:41,566 WARN L233 ceAbstractionStarter]: 38 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:06:41,566 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 39 thread instances. [2023-08-31 12:06:41,647 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:06:41,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 618 places, 540 transitions, 2757 flow [2023-08-31 12:06:41,974 INFO L130 PetriNetUnfolder]: 40/1006 cut-off events. [2023-08-31 12:06:41,974 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 12:06:42,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1904 conditions, 1006 events. 40/1006 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2251 event pairs, 0 based on Foata normal form. 0/847 useless extension candidates. Maximal degree in co-relation 1819. Up to 80 conditions per place. [2023-08-31 12:06:42,006 INFO L82 GeneralOperation]: Start removeDead. Operand has 618 places, 540 transitions, 2757 flow [2023-08-31 12:06:42,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 612 places, 533 transitions, 2743 flow [2023-08-31 12:06:42,010 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:06:42,010 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 612 places, 533 transitions, 2743 flow [2023-08-31 12:06:42,010 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 612 places, 533 transitions, 2743 flow [2023-08-31 12:06:42,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 612 places, 533 transitions, 2743 flow [2023-08-31 12:06:42,182 INFO L130 PetriNetUnfolder]: 0/765 cut-off events. [2023-08-31 12:06:42,182 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 12:06:42,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1663 conditions, 765 events. 0/765 cut-off events. For 10621/10621 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1243 event pairs, 0 based on Foata normal form. 0/687 useless extension candidates. Maximal degree in co-relation 0. Up to 40 conditions per place. [2023-08-31 12:06:42,240 INFO L119 LiptonReduction]: Number of co-enabled transitions 237744 [2023-08-31 12:06:48,000 INFO L134 LiptonReduction]: Checked pairs total: 404460 [2023-08-31 12:06:48,000 INFO L136 LiptonReduction]: Total number of compositions: 424 [2023-08-31 12:06:48,001 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:06:48,001 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:06:48,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:06:48,042 INFO L130 PetriNetUnfolder]: 0/274 cut-off events. [2023-08-31 12:06:48,042 INFO L131 PetriNetUnfolder]: For 10621/10621 co-relation queries the response was YES. [2023-08-31 12:06:48,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:06:48,042 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:06:48,043 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:06:48,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:06:48,043 INFO L85 PathProgramCache]: Analyzing trace with hash -248754147, now seen corresponding path program 1 times [2023-08-31 12:06:48,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:06:48,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332761534] [2023-08-31 12:06:48,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:06:48,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:06:48,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:48,086 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:06:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:48,133 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:06:48,134 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:06:48,134 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:06:48,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2023-08-31 12:06:48,134 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:06:48,135 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:06:48,135 WARN L233 ceAbstractionStarter]: 39 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:06:48,135 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 40 thread instances. [2023-08-31 12:06:48,202 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:06:48,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 633 places, 553 transitions, 2866 flow [2023-08-31 12:06:48,465 INFO L130 PetriNetUnfolder]: 41/1031 cut-off events. [2023-08-31 12:06:48,466 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 12:06:48,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 1031 events. 41/1031 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2320 event pairs, 0 based on Foata normal form. 0/868 useless extension candidates. Maximal degree in co-relation 1886. Up to 82 conditions per place. [2023-08-31 12:06:48,499 INFO L82 GeneralOperation]: Start removeDead. Operand has 633 places, 553 transitions, 2866 flow [2023-08-31 12:06:48,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 627 places, 546 transitions, 2852 flow [2023-08-31 12:06:48,502 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:06:48,502 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 627 places, 546 transitions, 2852 flow [2023-08-31 12:06:48,503 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 627 places, 546 transitions, 2852 flow [2023-08-31 12:06:48,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 627 places, 546 transitions, 2852 flow [2023-08-31 12:06:48,680 INFO L130 PetriNetUnfolder]: 0/784 cut-off events. [2023-08-31 12:06:48,680 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 12:06:48,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1725 conditions, 784 events. 0/784 cut-off events. For 11440/11440 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1287 event pairs, 0 based on Foata normal form. 0/704 useless extension candidates. Maximal degree in co-relation 0. Up to 41 conditions per place. [2023-08-31 12:06:48,741 INFO L119 LiptonReduction]: Number of co-enabled transitions 250080 [2023-08-31 12:06:54,702 INFO L134 LiptonReduction]: Checked pairs total: 469987 [2023-08-31 12:06:54,702 INFO L136 LiptonReduction]: Total number of compositions: 442 [2023-08-31 12:06:54,703 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:06:54,703 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:06:54,703 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:06:54,745 INFO L130 PetriNetUnfolder]: 0/281 cut-off events. [2023-08-31 12:06:54,745 INFO L131 PetriNetUnfolder]: For 11440/11440 co-relation queries the response was YES. [2023-08-31 12:06:54,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:06:54,745 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:06:54,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:06:54,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:06:54,746 INFO L85 PathProgramCache]: Analyzing trace with hash 149806603, now seen corresponding path program 1 times [2023-08-31 12:06:54,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:06:54,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060445659] [2023-08-31 12:06:54,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:06:54,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:06:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:54,791 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:06:54,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:06:54,842 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:06:54,842 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:06:54,842 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:06:54,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2023-08-31 12:06:54,842 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:06:54,843 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:06:54,843 WARN L233 ceAbstractionStarter]: 40 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:06:54,843 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 41 thread instances. [2023-08-31 12:06:54,918 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:06:54,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 648 places, 566 transitions, 2977 flow [2023-08-31 12:06:55,183 INFO L130 PetriNetUnfolder]: 42/1056 cut-off events. [2023-08-31 12:06:55,183 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 12:06:55,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2041 conditions, 1056 events. 42/1056 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2366 event pairs, 0 based on Foata normal form. 0/889 useless extension candidates. Maximal degree in co-relation 1954. Up to 84 conditions per place. [2023-08-31 12:06:55,218 INFO L82 GeneralOperation]: Start removeDead. Operand has 648 places, 566 transitions, 2977 flow [2023-08-31 12:06:55,222 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 642 places, 559 transitions, 2963 flow [2023-08-31 12:06:55,222 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:06:55,222 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 642 places, 559 transitions, 2963 flow [2023-08-31 12:06:55,222 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 642 places, 559 transitions, 2963 flow [2023-08-31 12:06:55,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 642 places, 559 transitions, 2963 flow [2023-08-31 12:06:55,410 INFO L130 PetriNetUnfolder]: 0/803 cut-off events. [2023-08-31 12:06:55,411 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 12:06:55,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1788 conditions, 803 events. 0/803 cut-off events. For 12300/12300 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1308 event pairs, 0 based on Foata normal form. 0/721 useless extension candidates. Maximal degree in co-relation 0. Up to 42 conditions per place. [2023-08-31 12:06:55,476 INFO L119 LiptonReduction]: Number of co-enabled transitions 262728 [2023-08-31 12:07:01,624 INFO L134 LiptonReduction]: Checked pairs total: 450620 [2023-08-31 12:07:01,624 INFO L136 LiptonReduction]: Total number of compositions: 445 [2023-08-31 12:07:01,625 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:07:01,626 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:07:01,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:07:01,672 INFO L130 PetriNetUnfolder]: 0/288 cut-off events. [2023-08-31 12:07:01,673 INFO L131 PetriNetUnfolder]: For 12300/12300 co-relation queries the response was YES. [2023-08-31 12:07:01,673 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:07:01,673 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:07:01,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:07:01,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:07:01,673 INFO L85 PathProgramCache]: Analyzing trace with hash -741861594, now seen corresponding path program 1 times [2023-08-31 12:07:01,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:07:01,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679187305] [2023-08-31 12:07:01,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:07:01,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:07:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:01,714 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:07:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:01,785 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:07:01,786 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:07:01,786 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:07:01,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2023-08-31 12:07:01,786 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:07:01,787 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:07:01,787 WARN L233 ceAbstractionStarter]: 41 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:07:01,787 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 42 thread instances. [2023-08-31 12:07:01,854 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:07:01,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 663 places, 579 transitions, 3090 flow [2023-08-31 12:07:02,276 INFO L130 PetriNetUnfolder]: 43/1081 cut-off events. [2023-08-31 12:07:02,276 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 12:07:02,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2111 conditions, 1081 events. 43/1081 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2421 event pairs, 0 based on Foata normal form. 0/910 useless extension candidates. Maximal degree in co-relation 2023. Up to 86 conditions per place. [2023-08-31 12:07:02,298 INFO L82 GeneralOperation]: Start removeDead. Operand has 663 places, 579 transitions, 3090 flow [2023-08-31 12:07:02,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 657 places, 572 transitions, 3076 flow [2023-08-31 12:07:02,300 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:07:02,300 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 657 places, 572 transitions, 3076 flow [2023-08-31 12:07:02,301 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 657 places, 572 transitions, 3076 flow [2023-08-31 12:07:02,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 657 places, 572 transitions, 3076 flow [2023-08-31 12:07:02,495 INFO L130 PetriNetUnfolder]: 0/822 cut-off events. [2023-08-31 12:07:02,495 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 12:07:02,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1852 conditions, 822 events. 0/822 cut-off events. For 13202/13202 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1341 event pairs, 0 based on Foata normal form. 0/738 useless extension candidates. Maximal degree in co-relation 0. Up to 43 conditions per place. [2023-08-31 12:07:02,561 INFO L119 LiptonReduction]: Number of co-enabled transitions 275688 [2023-08-31 12:07:08,635 INFO L134 LiptonReduction]: Checked pairs total: 485936 [2023-08-31 12:07:08,635 INFO L136 LiptonReduction]: Total number of compositions: 451 [2023-08-31 12:07:08,636 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:07:08,636 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:07:08,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:07:08,762 INFO L130 PetriNetUnfolder]: 0/295 cut-off events. [2023-08-31 12:07:08,762 INFO L131 PetriNetUnfolder]: For 13202/13202 co-relation queries the response was YES. [2023-08-31 12:07:08,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:07:08,763 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:07:08,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:07:08,763 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:07:08,763 INFO L85 PathProgramCache]: Analyzing trace with hash -621434081, now seen corresponding path program 1 times [2023-08-31 12:07:08,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:07:08,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229952988] [2023-08-31 12:07:08,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:07:08,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:07:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:08,810 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:07:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:08,870 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:07:08,871 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:07:08,871 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:07:08,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2023-08-31 12:07:08,871 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:07:08,872 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:07:08,872 WARN L233 ceAbstractionStarter]: 42 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:07:08,872 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 43 thread instances. [2023-08-31 12:07:08,953 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:07:08,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 678 places, 592 transitions, 3205 flow [2023-08-31 12:07:09,356 INFO L130 PetriNetUnfolder]: 44/1106 cut-off events. [2023-08-31 12:07:09,356 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 12:07:09,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2182 conditions, 1106 events. 44/1106 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2482 event pairs, 0 based on Foata normal form. 0/931 useless extension candidates. Maximal degree in co-relation 2093. Up to 88 conditions per place. [2023-08-31 12:07:09,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 678 places, 592 transitions, 3205 flow [2023-08-31 12:07:09,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 672 places, 585 transitions, 3191 flow [2023-08-31 12:07:09,398 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:07:09,398 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 672 places, 585 transitions, 3191 flow [2023-08-31 12:07:09,399 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 672 places, 585 transitions, 3191 flow [2023-08-31 12:07:09,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 672 places, 585 transitions, 3191 flow [2023-08-31 12:07:09,609 INFO L130 PetriNetUnfolder]: 0/841 cut-off events. [2023-08-31 12:07:09,609 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 12:07:09,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1917 conditions, 841 events. 0/841 cut-off events. For 14147/14147 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1373 event pairs, 0 based on Foata normal form. 0/755 useless extension candidates. Maximal degree in co-relation 0. Up to 44 conditions per place. [2023-08-31 12:07:09,684 INFO L119 LiptonReduction]: Number of co-enabled transitions 288960 [2023-08-31 12:07:16,330 INFO L134 LiptonReduction]: Checked pairs total: 522363 [2023-08-31 12:07:16,330 INFO L136 LiptonReduction]: Total number of compositions: 476 [2023-08-31 12:07:16,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:07:16,332 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:07:16,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:07:16,379 INFO L130 PetriNetUnfolder]: 0/302 cut-off events. [2023-08-31 12:07:16,379 INFO L131 PetriNetUnfolder]: For 14147/14147 co-relation queries the response was YES. [2023-08-31 12:07:16,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:07:16,379 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:07:16,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:07:16,379 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:07:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash -136956679, now seen corresponding path program 1 times [2023-08-31 12:07:16,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:07:16,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71381066] [2023-08-31 12:07:16,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:07:16,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:07:16,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:16,430 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:07:16,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:16,488 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:07:16,488 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:07:16,488 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:07:16,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2023-08-31 12:07:16,489 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:07:16,489 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:07:16,489 WARN L233 ceAbstractionStarter]: 43 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:07:16,489 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 44 thread instances. [2023-08-31 12:07:16,561 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:07:16,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 693 places, 605 transitions, 3322 flow [2023-08-31 12:07:16,991 INFO L130 PetriNetUnfolder]: 45/1131 cut-off events. [2023-08-31 12:07:16,991 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-08-31 12:07:17,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2254 conditions, 1131 events. 45/1131 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2542 event pairs, 0 based on Foata normal form. 0/952 useless extension candidates. Maximal degree in co-relation 2164. Up to 90 conditions per place. [2023-08-31 12:07:17,052 INFO L82 GeneralOperation]: Start removeDead. Operand has 693 places, 605 transitions, 3322 flow [2023-08-31 12:07:17,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 687 places, 598 transitions, 3308 flow [2023-08-31 12:07:17,056 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:07:17,056 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 687 places, 598 transitions, 3308 flow [2023-08-31 12:07:17,057 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 687 places, 598 transitions, 3308 flow [2023-08-31 12:07:17,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 687 places, 598 transitions, 3308 flow [2023-08-31 12:07:17,314 INFO L130 PetriNetUnfolder]: 0/860 cut-off events. [2023-08-31 12:07:17,314 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-08-31 12:07:17,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1983 conditions, 860 events. 0/860 cut-off events. For 15136/15136 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1410 event pairs, 0 based on Foata normal form. 0/772 useless extension candidates. Maximal degree in co-relation 0. Up to 45 conditions per place. [2023-08-31 12:07:17,394 INFO L119 LiptonReduction]: Number of co-enabled transitions 302544 [2023-08-31 12:07:23,949 INFO L134 LiptonReduction]: Checked pairs total: 517880 [2023-08-31 12:07:23,949 INFO L136 LiptonReduction]: Total number of compositions: 480 [2023-08-31 12:07:23,950 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:07:23,950 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:07:23,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:07:23,998 INFO L130 PetriNetUnfolder]: 0/309 cut-off events. [2023-08-31 12:07:23,998 INFO L131 PetriNetUnfolder]: For 15136/15136 co-relation queries the response was YES. [2023-08-31 12:07:23,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:07:23,999 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:07:23,999 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:07:23,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:07:23,999 INFO L85 PathProgramCache]: Analyzing trace with hash -731560033, now seen corresponding path program 1 times [2023-08-31 12:07:23,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:07:23,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176774655] [2023-08-31 12:07:23,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:07:23,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:07:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:24,050 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:07:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:24,116 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:07:24,116 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:07:24,116 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:07:24,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2023-08-31 12:07:24,117 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:07:24,117 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:07:24,117 WARN L233 ceAbstractionStarter]: 44 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:07:24,117 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 45 thread instances. [2023-08-31 12:07:24,210 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:07:24,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 708 places, 618 transitions, 3441 flow [2023-08-31 12:07:24,558 INFO L130 PetriNetUnfolder]: 46/1156 cut-off events. [2023-08-31 12:07:24,558 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-08-31 12:07:24,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2327 conditions, 1156 events. 46/1156 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2580 event pairs, 0 based on Foata normal form. 0/973 useless extension candidates. Maximal degree in co-relation 2236. Up to 92 conditions per place. [2023-08-31 12:07:24,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 708 places, 618 transitions, 3441 flow [2023-08-31 12:07:24,608 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 702 places, 611 transitions, 3427 flow [2023-08-31 12:07:24,608 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:07:24,608 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 702 places, 611 transitions, 3427 flow [2023-08-31 12:07:24,608 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 702 places, 611 transitions, 3427 flow [2023-08-31 12:07:24,608 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 702 places, 611 transitions, 3427 flow [2023-08-31 12:07:24,850 INFO L130 PetriNetUnfolder]: 0/879 cut-off events. [2023-08-31 12:07:24,850 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-08-31 12:07:24,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2050 conditions, 879 events. 0/879 cut-off events. For 16170/16170 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1437 event pairs, 0 based on Foata normal form. 0/789 useless extension candidates. Maximal degree in co-relation 0. Up to 46 conditions per place. [2023-08-31 12:07:24,934 INFO L119 LiptonReduction]: Number of co-enabled transitions 316440 [2023-08-31 12:07:31,775 INFO L134 LiptonReduction]: Checked pairs total: 537682 [2023-08-31 12:07:31,775 INFO L136 LiptonReduction]: Total number of compositions: 491 [2023-08-31 12:07:31,776 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:07:31,776 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:07:31,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:07:31,828 INFO L130 PetriNetUnfolder]: 0/316 cut-off events. [2023-08-31 12:07:31,828 INFO L131 PetriNetUnfolder]: For 16170/16170 co-relation queries the response was YES. [2023-08-31 12:07:31,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:07:31,828 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:07:31,828 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:07:31,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:07:31,829 INFO L85 PathProgramCache]: Analyzing trace with hash 1906981867, now seen corresponding path program 1 times [2023-08-31 12:07:31,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:07:31,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996821730] [2023-08-31 12:07:31,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:07:31,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:07:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:31,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:07:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:31,928 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:07:31,929 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:07:31,929 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:07:31,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2023-08-31 12:07:31,929 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:07:31,929 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:07:31,929 WARN L233 ceAbstractionStarter]: 45 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:07:31,930 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 46 thread instances. [2023-08-31 12:07:32,004 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:07:32,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 723 places, 631 transitions, 3562 flow [2023-08-31 12:07:32,361 INFO L130 PetriNetUnfolder]: 47/1181 cut-off events. [2023-08-31 12:07:32,361 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-08-31 12:07:32,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2401 conditions, 1181 events. 47/1181 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2648 event pairs, 0 based on Foata normal form. 0/994 useless extension candidates. Maximal degree in co-relation 2309. Up to 94 conditions per place. [2023-08-31 12:07:32,406 INFO L82 GeneralOperation]: Start removeDead. Operand has 723 places, 631 transitions, 3562 flow [2023-08-31 12:07:32,409 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 717 places, 624 transitions, 3548 flow [2023-08-31 12:07:32,409 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:07:32,409 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 717 places, 624 transitions, 3548 flow [2023-08-31 12:07:32,409 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 717 places, 624 transitions, 3548 flow [2023-08-31 12:07:32,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 717 places, 624 transitions, 3548 flow [2023-08-31 12:07:32,742 INFO L130 PetriNetUnfolder]: 0/898 cut-off events. [2023-08-31 12:07:32,742 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-08-31 12:07:32,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 898 events. 0/898 cut-off events. For 17250/17250 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1454 event pairs, 0 based on Foata normal form. 0/806 useless extension candidates. Maximal degree in co-relation 0. Up to 47 conditions per place. [2023-08-31 12:07:32,811 INFO L119 LiptonReduction]: Number of co-enabled transitions 330648 [2023-08-31 12:07:39,497 INFO L134 LiptonReduction]: Checked pairs total: 610441 [2023-08-31 12:07:39,497 INFO L136 LiptonReduction]: Total number of compositions: 502 [2023-08-31 12:07:39,498 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:07:39,498 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:07:39,498 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:07:39,549 INFO L130 PetriNetUnfolder]: 0/323 cut-off events. [2023-08-31 12:07:39,549 INFO L131 PetriNetUnfolder]: For 17250/17250 co-relation queries the response was YES. [2023-08-31 12:07:39,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:07:39,549 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:07:39,549 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:07:39,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:07:39,550 INFO L85 PathProgramCache]: Analyzing trace with hash -59631802, now seen corresponding path program 1 times [2023-08-31 12:07:39,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:07:39,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073194018] [2023-08-31 12:07:39,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:07:39,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:07:39,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:39,596 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:07:39,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:39,651 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:07:39,652 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:07:39,652 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:07:39,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2023-08-31 12:07:39,652 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:07:39,652 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:07:39,653 WARN L233 ceAbstractionStarter]: 46 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:07:39,653 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 47 thread instances. [2023-08-31 12:07:39,736 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:07:39,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 738 places, 644 transitions, 3685 flow [2023-08-31 12:07:40,156 INFO L130 PetriNetUnfolder]: 48/1206 cut-off events. [2023-08-31 12:07:40,156 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-08-31 12:07:40,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2476 conditions, 1206 events. 48/1206 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2820 event pairs, 0 based on Foata normal form. 0/1015 useless extension candidates. Maximal degree in co-relation 2383. Up to 96 conditions per place. [2023-08-31 12:07:40,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 738 places, 644 transitions, 3685 flow [2023-08-31 12:07:40,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 732 places, 637 transitions, 3671 flow [2023-08-31 12:07:40,194 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:07:40,194 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 732 places, 637 transitions, 3671 flow [2023-08-31 12:07:40,194 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 732 places, 637 transitions, 3671 flow [2023-08-31 12:07:40,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 732 places, 637 transitions, 3671 flow [2023-08-31 12:07:40,477 INFO L130 PetriNetUnfolder]: 0/917 cut-off events. [2023-08-31 12:07:40,477 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-08-31 12:07:40,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2187 conditions, 917 events. 0/917 cut-off events. For 18377/18377 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1534 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 0. Up to 48 conditions per place. [2023-08-31 12:07:40,564 INFO L119 LiptonReduction]: Number of co-enabled transitions 345168 [2023-08-31 12:07:47,473 INFO L134 LiptonReduction]: Checked pairs total: 626302 [2023-08-31 12:07:47,474 INFO L136 LiptonReduction]: Total number of compositions: 511 [2023-08-31 12:07:47,475 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:07:47,475 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:07:47,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:07:47,531 INFO L130 PetriNetUnfolder]: 0/330 cut-off events. [2023-08-31 12:07:47,532 INFO L131 PetriNetUnfolder]: For 18377/18377 co-relation queries the response was YES. [2023-08-31 12:07:47,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:07:47,532 INFO L208 CegarLoopForPetriNet]: trace histogram [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] [2023-08-31 12:07:47,532 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:07:47,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:07:47,532 INFO L85 PathProgramCache]: Analyzing trace with hash 2077524225, now seen corresponding path program 1 times [2023-08-31 12:07:47,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:07:47,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000794959] [2023-08-31 12:07:47,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:07:47,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:07:47,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:47,589 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:07:47,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:47,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:07:47,651 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:07:47,651 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:07:47,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2023-08-31 12:07:47,651 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:07:47,652 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:07:47,652 WARN L233 ceAbstractionStarter]: 47 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:07:47,652 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 48 thread instances. [2023-08-31 12:07:47,731 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:07:47,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 753 places, 657 transitions, 3810 flow [2023-08-31 12:07:48,101 INFO L130 PetriNetUnfolder]: 49/1231 cut-off events. [2023-08-31 12:07:48,102 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-08-31 12:07:48,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2552 conditions, 1231 events. 49/1231 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2757 event pairs, 0 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 2458. Up to 98 conditions per place. [2023-08-31 12:07:48,155 INFO L82 GeneralOperation]: Start removeDead. Operand has 753 places, 657 transitions, 3810 flow [2023-08-31 12:07:48,159 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 747 places, 650 transitions, 3796 flow [2023-08-31 12:07:48,159 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:07:48,159 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 747 places, 650 transitions, 3796 flow [2023-08-31 12:07:48,159 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 747 places, 650 transitions, 3796 flow [2023-08-31 12:07:48,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 747 places, 650 transitions, 3796 flow [2023-08-31 12:07:48,441 INFO L130 PetriNetUnfolder]: 0/936 cut-off events. [2023-08-31 12:07:48,441 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-08-31 12:07:48,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2257 conditions, 936 events. 0/936 cut-off events. For 19552/19552 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1524 event pairs, 0 based on Foata normal form. 0/840 useless extension candidates. Maximal degree in co-relation 0. Up to 49 conditions per place. [2023-08-31 12:07:48,538 INFO L119 LiptonReduction]: Number of co-enabled transitions 360000 [2023-08-31 12:07:55,779 INFO L134 LiptonReduction]: Checked pairs total: 657169 [2023-08-31 12:07:55,779 INFO L136 LiptonReduction]: Total number of compositions: 518 [2023-08-31 12:07:55,780 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:07:55,781 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:07:55,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:07:55,839 INFO L130 PetriNetUnfolder]: 0/337 cut-off events. [2023-08-31 12:07:55,839 INFO L131 PetriNetUnfolder]: For 19552/19552 co-relation queries the response was YES. [2023-08-31 12:07:55,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:07:55,839 INFO L208 CegarLoopForPetriNet]: trace histogram [48, 48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:07:55,839 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:07:55,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:07:55,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1598543859, now seen corresponding path program 1 times [2023-08-31 12:07:55,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:07:55,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645896318] [2023-08-31 12:07:55,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:07:55,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:07:55,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:55,901 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:07:55,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:55,979 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:07:55,979 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:07:55,980 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:07:55,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2023-08-31 12:07:55,980 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:07:55,980 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:07:55,980 WARN L233 ceAbstractionStarter]: 48 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:07:55,981 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 49 thread instances. [2023-08-31 12:07:56,064 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:07:56,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 768 places, 670 transitions, 3937 flow [2023-08-31 12:07:56,472 INFO L130 PetriNetUnfolder]: 50/1256 cut-off events. [2023-08-31 12:07:56,472 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-08-31 12:07:56,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2629 conditions, 1256 events. 50/1256 cut-off events. For 20776/20776 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2819 event pairs, 0 based on Foata normal form. 0/1057 useless extension candidates. Maximal degree in co-relation 2534. Up to 100 conditions per place. [2023-08-31 12:07:56,530 INFO L82 GeneralOperation]: Start removeDead. Operand has 768 places, 670 transitions, 3937 flow [2023-08-31 12:07:56,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 762 places, 663 transitions, 3923 flow [2023-08-31 12:07:56,535 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:07:56,536 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 762 places, 663 transitions, 3923 flow [2023-08-31 12:07:56,536 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 762 places, 663 transitions, 3923 flow [2023-08-31 12:07:56,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 762 places, 663 transitions, 3923 flow [2023-08-31 12:07:56,990 INFO L130 PetriNetUnfolder]: 0/955 cut-off events. [2023-08-31 12:07:56,990 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-08-31 12:07:56,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2328 conditions, 955 events. 0/955 cut-off events. For 20776/20776 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1556 event pairs, 0 based on Foata normal form. 0/857 useless extension candidates. Maximal degree in co-relation 0. Up to 50 conditions per place. [2023-08-31 12:07:57,074 INFO L119 LiptonReduction]: Number of co-enabled transitions 375144 [2023-08-31 12:08:04,433 INFO L134 LiptonReduction]: Checked pairs total: 694586 [2023-08-31 12:08:04,433 INFO L136 LiptonReduction]: Total number of compositions: 535 [2023-08-31 12:08:04,434 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:08:04,435 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:08:04,435 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:08:04,492 INFO L130 PetriNetUnfolder]: 0/344 cut-off events. [2023-08-31 12:08:04,492 INFO L131 PetriNetUnfolder]: For 20776/20776 co-relation queries the response was YES. [2023-08-31 12:08:04,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:08:04,493 INFO L208 CegarLoopForPetriNet]: trace histogram [49, 49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:08:04,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:08:04,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:08:04,493 INFO L85 PathProgramCache]: Analyzing trace with hash -959817510, now seen corresponding path program 1 times [2023-08-31 12:08:04,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:08:04,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773155847] [2023-08-31 12:08:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:08:04,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:08:04,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:08:04,550 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:08:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:08:04,619 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:08:04,619 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:08:04,619 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:08:04,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2023-08-31 12:08:04,620 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:08:04,620 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:08:04,620 WARN L233 ceAbstractionStarter]: 49 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:08:04,620 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 50 thread instances. [2023-08-31 12:08:04,704 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:08:04,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 783 places, 683 transitions, 4066 flow [2023-08-31 12:08:05,160 INFO L130 PetriNetUnfolder]: 51/1281 cut-off events. [2023-08-31 12:08:05,161 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-08-31 12:08:05,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 1281 events. 51/1281 cut-off events. For 22050/22050 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2880 event pairs, 0 based on Foata normal form. 0/1078 useless extension candidates. Maximal degree in co-relation 2611. Up to 102 conditions per place. [2023-08-31 12:08:05,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 783 places, 683 transitions, 4066 flow [2023-08-31 12:08:05,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 777 places, 676 transitions, 4052 flow [2023-08-31 12:08:05,220 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:08:05,220 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 777 places, 676 transitions, 4052 flow [2023-08-31 12:08:05,221 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 777 places, 676 transitions, 4052 flow [2023-08-31 12:08:05,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 777 places, 676 transitions, 4052 flow [2023-08-31 12:08:05,510 INFO L130 PetriNetUnfolder]: 0/974 cut-off events. [2023-08-31 12:08:05,511 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-08-31 12:08:05,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2400 conditions, 974 events. 0/974 cut-off events. For 22050/22050 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1590 event pairs, 0 based on Foata normal form. 0/874 useless extension candidates. Maximal degree in co-relation 0. Up to 51 conditions per place. [2023-08-31 12:08:05,611 INFO L119 LiptonReduction]: Number of co-enabled transitions 390600 [2023-08-31 12:08:12,913 INFO L134 LiptonReduction]: Checked pairs total: 716356 [2023-08-31 12:08:12,913 INFO L136 LiptonReduction]: Total number of compositions: 538 [2023-08-31 12:08:12,914 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:08:12,914 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:08:12,914 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:08:12,973 INFO L130 PetriNetUnfolder]: 0/351 cut-off events. [2023-08-31 12:08:12,974 INFO L131 PetriNetUnfolder]: For 22050/22050 co-relation queries the response was YES. [2023-08-31 12:08:12,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:08:12,974 INFO L208 CegarLoopForPetriNet]: trace histogram [50, 50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:08:12,974 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:08:12,974 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:08:12,974 INFO L85 PathProgramCache]: Analyzing trace with hash 1206338236, now seen corresponding path program 1 times [2023-08-31 12:08:12,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:08:12,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087495887] [2023-08-31 12:08:12,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:08:12,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:08:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:08:13,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:08:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:08:13,101 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:08:13,101 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:08:13,101 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:08:13,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2023-08-31 12:08:13,102 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:08:13,102 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:08:13,102 WARN L233 ceAbstractionStarter]: 50 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:08:13,102 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 51 thread instances. [2023-08-31 12:08:13,185 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:08:13,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 798 places, 696 transitions, 4197 flow [2023-08-31 12:08:13,641 INFO L130 PetriNetUnfolder]: 52/1306 cut-off events. [2023-08-31 12:08:13,641 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-08-31 12:08:13,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2786 conditions, 1306 events. 52/1306 cut-off events. For 23375/23375 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 2928 event pairs, 0 based on Foata normal form. 0/1099 useless extension candidates. Maximal degree in co-relation 2689. Up to 104 conditions per place. [2023-08-31 12:08:13,699 INFO L82 GeneralOperation]: Start removeDead. Operand has 798 places, 696 transitions, 4197 flow [2023-08-31 12:08:13,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 792 places, 689 transitions, 4183 flow [2023-08-31 12:08:13,703 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:08:13,703 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 792 places, 689 transitions, 4183 flow [2023-08-31 12:08:13,703 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 792 places, 689 transitions, 4183 flow [2023-08-31 12:08:13,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 792 places, 689 transitions, 4183 flow [2023-08-31 12:08:14,069 INFO L130 PetriNetUnfolder]: 0/993 cut-off events. [2023-08-31 12:08:14,070 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-08-31 12:08:14,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2473 conditions, 993 events. 0/993 cut-off events. For 23375/23375 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1620 event pairs, 0 based on Foata normal form. 0/891 useless extension candidates. Maximal degree in co-relation 0. Up to 52 conditions per place. [2023-08-31 12:08:14,305 INFO L119 LiptonReduction]: Number of co-enabled transitions 406368 [2023-08-31 12:08:22,078 INFO L134 LiptonReduction]: Checked pairs total: 756155 [2023-08-31 12:08:22,078 INFO L136 LiptonReduction]: Total number of compositions: 551 [2023-08-31 12:08:22,079 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:08:22,079 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:08:22,079 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:08:22,143 INFO L130 PetriNetUnfolder]: 0/358 cut-off events. [2023-08-31 12:08:22,143 INFO L131 PetriNetUnfolder]: For 23375/23375 co-relation queries the response was YES. [2023-08-31 12:08:22,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:08:22,143 INFO L208 CegarLoopForPetriNet]: trace histogram [51, 51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:08:22,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:08:22,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:08:22,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1657865455, now seen corresponding path program 1 times [2023-08-31 12:08:22,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:08:22,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178833746] [2023-08-31 12:08:22,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:08:22,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:08:22,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:08:22,193 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:08:22,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:08:22,255 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:08:22,256 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:08:22,256 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:08:22,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2023-08-31 12:08:22,256 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:08:22,256 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:08:22,257 WARN L233 ceAbstractionStarter]: 51 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:08:22,257 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 52 thread instances. [2023-08-31 12:08:22,343 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:08:22,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 813 places, 709 transitions, 4330 flow [2023-08-31 12:08:22,859 INFO L130 PetriNetUnfolder]: 53/1331 cut-off events. [2023-08-31 12:08:22,859 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-08-31 12:08:22,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2866 conditions, 1331 events. 53/1331 cut-off events. For 24752/24752 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 3005 event pairs, 0 based on Foata normal form. 0/1120 useless extension candidates. Maximal degree in co-relation 2768. Up to 106 conditions per place. [2023-08-31 12:08:22,915 INFO L82 GeneralOperation]: Start removeDead. Operand has 813 places, 709 transitions, 4330 flow [2023-08-31 12:08:22,918 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 807 places, 702 transitions, 4316 flow [2023-08-31 12:08:22,918 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:08:22,918 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 807 places, 702 transitions, 4316 flow [2023-08-31 12:08:22,918 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 807 places, 702 transitions, 4316 flow [2023-08-31 12:08:22,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 807 places, 702 transitions, 4316 flow [2023-08-31 12:08:23,232 INFO L130 PetriNetUnfolder]: 0/1012 cut-off events. [2023-08-31 12:08:23,232 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-08-31 12:08:23,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2547 conditions, 1012 events. 0/1012 cut-off events. For 24752/24752 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1672 event pairs, 0 based on Foata normal form. 0/908 useless extension candidates. Maximal degree in co-relation 0. Up to 53 conditions per place. [2023-08-31 12:08:23,340 INFO L119 LiptonReduction]: Number of co-enabled transitions 422448 [2023-08-31 12:08:31,048 INFO L134 LiptonReduction]: Checked pairs total: 790771 [2023-08-31 12:08:31,048 INFO L136 LiptonReduction]: Total number of compositions: 557 [2023-08-31 12:08:31,049 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:08:31,049 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:08:31,049 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:08:31,120 INFO L130 PetriNetUnfolder]: 0/365 cut-off events. [2023-08-31 12:08:31,120 INFO L131 PetriNetUnfolder]: For 24752/24752 co-relation queries the response was YES. [2023-08-31 12:08:31,120 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:08:31,121 INFO L208 CegarLoopForPetriNet]: trace histogram [52, 52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:08:31,121 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:08:31,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:08:31,121 INFO L85 PathProgramCache]: Analyzing trace with hash -2046435290, now seen corresponding path program 1 times [2023-08-31 12:08:31,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:08:31,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018519053] [2023-08-31 12:08:31,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:08:31,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:08:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:08:31,182 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:08:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:08:31,264 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:08:31,264 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:08:31,264 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:08:31,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2023-08-31 12:08:31,264 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:08:31,265 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:08:31,265 WARN L233 ceAbstractionStarter]: 52 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:08:31,265 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 53 thread instances. [2023-08-31 12:08:31,350 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:08:31,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 828 places, 722 transitions, 4465 flow [2023-08-31 12:08:31,804 INFO L130 PetriNetUnfolder]: 54/1356 cut-off events. [2023-08-31 12:08:31,804 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-08-31 12:08:31,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2947 conditions, 1356 events. 54/1356 cut-off events. For 26182/26182 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 3050 event pairs, 0 based on Foata normal form. 0/1141 useless extension candidates. Maximal degree in co-relation 2848. Up to 108 conditions per place. [2023-08-31 12:08:31,874 INFO L82 GeneralOperation]: Start removeDead. Operand has 828 places, 722 transitions, 4465 flow [2023-08-31 12:08:31,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 822 places, 715 transitions, 4451 flow [2023-08-31 12:08:31,879 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:08:31,879 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 822 places, 715 transitions, 4451 flow [2023-08-31 12:08:31,879 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 822 places, 715 transitions, 4451 flow [2023-08-31 12:08:31,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 822 places, 715 transitions, 4451 flow [2023-08-31 12:08:32,327 INFO L130 PetriNetUnfolder]: 0/1031 cut-off events. [2023-08-31 12:08:32,327 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-08-31 12:08:32,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2622 conditions, 1031 events. 0/1031 cut-off events. For 26182/26182 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1688 event pairs, 0 based on Foata normal form. 0/925 useless extension candidates. Maximal degree in co-relation 0. Up to 54 conditions per place. [2023-08-31 12:08:32,429 INFO L119 LiptonReduction]: Number of co-enabled transitions 438840 [2023-08-31 12:08:40,202 INFO L134 LiptonReduction]: Checked pairs total: 746163 [2023-08-31 12:08:40,202 INFO L136 LiptonReduction]: Total number of compositions: 571 [2023-08-31 12:08:40,203 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:08:40,204 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:08:40,204 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:08:40,273 INFO L130 PetriNetUnfolder]: 0/372 cut-off events. [2023-08-31 12:08:40,273 INFO L131 PetriNetUnfolder]: For 26182/26182 co-relation queries the response was YES. [2023-08-31 12:08:40,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:08:40,274 INFO L208 CegarLoopForPetriNet]: trace histogram [53, 53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:08:40,274 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:08:40,274 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:08:40,274 INFO L85 PathProgramCache]: Analyzing trace with hash 286365318, now seen corresponding path program 1 times [2023-08-31 12:08:40,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:08:40,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471180525] [2023-08-31 12:08:40,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:08:40,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:08:40,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:08:40,392 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:08:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:08:40,466 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:08:40,466 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:08:40,466 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:08:40,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2023-08-31 12:08:40,467 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:08:40,467 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:08:40,467 WARN L233 ceAbstractionStarter]: 53 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:08:40,467 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 54 thread instances. [2023-08-31 12:08:40,549 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:08:40,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 843 places, 735 transitions, 4602 flow [2023-08-31 12:08:41,013 INFO L130 PetriNetUnfolder]: 55/1381 cut-off events. [2023-08-31 12:08:41,013 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-08-31 12:08:41,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3029 conditions, 1381 events. 55/1381 cut-off events. For 27666/27666 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 3134 event pairs, 0 based on Foata normal form. 0/1162 useless extension candidates. Maximal degree in co-relation 2929. Up to 110 conditions per place. [2023-08-31 12:08:41,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 843 places, 735 transitions, 4602 flow [2023-08-31 12:08:41,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 837 places, 728 transitions, 4588 flow [2023-08-31 12:08:41,086 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:08:41,087 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 837 places, 728 transitions, 4588 flow [2023-08-31 12:08:41,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 837 places, 728 transitions, 4588 flow [2023-08-31 12:08:41,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 837 places, 728 transitions, 4588 flow [2023-08-31 12:08:41,442 INFO L130 PetriNetUnfolder]: 0/1050 cut-off events. [2023-08-31 12:08:41,442 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-08-31 12:08:41,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2698 conditions, 1050 events. 0/1050 cut-off events. For 27666/27666 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1748 event pairs, 0 based on Foata normal form. 0/942 useless extension candidates. Maximal degree in co-relation 0. Up to 55 conditions per place. [2023-08-31 12:08:41,570 INFO L119 LiptonReduction]: Number of co-enabled transitions 455544 [2023-08-31 12:08:49,724 INFO L134 LiptonReduction]: Checked pairs total: 774715 [2023-08-31 12:08:49,724 INFO L136 LiptonReduction]: Total number of compositions: 572 [2023-08-31 12:08:49,726 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:08:49,726 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:08:49,726 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:08:49,800 INFO L130 PetriNetUnfolder]: 0/379 cut-off events. [2023-08-31 12:08:49,800 INFO L131 PetriNetUnfolder]: For 27666/27666 co-relation queries the response was YES. [2023-08-31 12:08:49,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:08:49,800 INFO L208 CegarLoopForPetriNet]: trace histogram [54, 54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:08:49,800 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:08:49,801 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:08:49,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1649169740, now seen corresponding path program 1 times [2023-08-31 12:08:49,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:08:49,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663105123] [2023-08-31 12:08:49,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:08:49,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:08:49,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:08:49,857 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:08:49,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:08:49,934 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:08:49,934 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:08:49,934 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:08:49,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2023-08-31 12:08:49,935 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:08:49,935 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:08:49,935 WARN L233 ceAbstractionStarter]: 54 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:08:49,935 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 55 thread instances. [2023-08-31 12:08:50,023 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:08:50,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 858 places, 748 transitions, 4741 flow [2023-08-31 12:08:50,667 INFO L130 PetriNetUnfolder]: 56/1406 cut-off events. [2023-08-31 12:08:50,667 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-08-31 12:08:50,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 1406 events. 56/1406 cut-off events. For 29205/29205 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 3174 event pairs, 0 based on Foata normal form. 0/1183 useless extension candidates. Maximal degree in co-relation 3011. Up to 112 conditions per place. [2023-08-31 12:08:50,709 INFO L82 GeneralOperation]: Start removeDead. Operand has 858 places, 748 transitions, 4741 flow [2023-08-31 12:08:50,713 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 852 places, 741 transitions, 4727 flow [2023-08-31 12:08:50,713 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:08:50,714 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 852 places, 741 transitions, 4727 flow [2023-08-31 12:08:50,714 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 852 places, 741 transitions, 4727 flow [2023-08-31 12:08:50,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 852 places, 741 transitions, 4727 flow [2023-08-31 12:08:51,089 INFO L130 PetriNetUnfolder]: 0/1069 cut-off events. [2023-08-31 12:08:51,089 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-08-31 12:08:51,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2775 conditions, 1069 events. 0/1069 cut-off events. For 29205/29205 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1763 event pairs, 0 based on Foata normal form. 0/959 useless extension candidates. Maximal degree in co-relation 0. Up to 56 conditions per place. [2023-08-31 12:08:51,217 INFO L119 LiptonReduction]: Number of co-enabled transitions 472560 [2023-08-31 12:08:59,787 INFO L134 LiptonReduction]: Checked pairs total: 885433 [2023-08-31 12:08:59,787 INFO L136 LiptonReduction]: Total number of compositions: 588 [2023-08-31 12:08:59,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:08:59,788 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:08:59,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:08:59,863 INFO L130 PetriNetUnfolder]: 0/386 cut-off events. [2023-08-31 12:08:59,863 INFO L131 PetriNetUnfolder]: For 29205/29205 co-relation queries the response was YES. [2023-08-31 12:08:59,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:08:59,863 INFO L208 CegarLoopForPetriNet]: trace histogram [55, 55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:08:59,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:08:59,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:08:59,864 INFO L85 PathProgramCache]: Analyzing trace with hash -325730388, now seen corresponding path program 1 times [2023-08-31 12:08:59,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:08:59,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779335470] [2023-08-31 12:08:59,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:08:59,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:08:59,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:08:59,920 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:08:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:09:00,000 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:09:00,000 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:09:00,000 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:09:00,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2023-08-31 12:09:00,001 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:09:00,001 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:09:00,001 WARN L233 ceAbstractionStarter]: 55 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:09:00,001 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 56 thread instances. [2023-08-31 12:09:00,088 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:09:00,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 873 places, 761 transitions, 4882 flow [2023-08-31 12:09:00,581 INFO L130 PetriNetUnfolder]: 57/1431 cut-off events. [2023-08-31 12:09:00,581 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-08-31 12:09:00,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3196 conditions, 1431 events. 57/1431 cut-off events. For 30800/30800 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 3212 event pairs, 0 based on Foata normal form. 0/1204 useless extension candidates. Maximal degree in co-relation 3094. Up to 114 conditions per place. [2023-08-31 12:09:00,655 INFO L82 GeneralOperation]: Start removeDead. Operand has 873 places, 761 transitions, 4882 flow [2023-08-31 12:09:00,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 867 places, 754 transitions, 4868 flow [2023-08-31 12:09:00,658 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:09:00,658 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 867 places, 754 transitions, 4868 flow [2023-08-31 12:09:00,659 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 867 places, 754 transitions, 4868 flow [2023-08-31 12:09:00,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 867 places, 754 transitions, 4868 flow [2023-08-31 12:09:01,129 INFO L130 PetriNetUnfolder]: 0/1088 cut-off events. [2023-08-31 12:09:01,130 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-08-31 12:09:01,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2853 conditions, 1088 events. 0/1088 cut-off events. For 30800/30800 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1777 event pairs, 0 based on Foata normal form. 0/976 useless extension candidates. Maximal degree in co-relation 0. Up to 57 conditions per place. [2023-08-31 12:09:01,242 INFO L119 LiptonReduction]: Number of co-enabled transitions 489888 [2023-08-31 12:09:09,814 INFO L134 LiptonReduction]: Checked pairs total: 900823 [2023-08-31 12:09:09,814 INFO L136 LiptonReduction]: Total number of compositions: 612 [2023-08-31 12:09:09,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:09:09,815 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:09:09,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:09:09,941 INFO L130 PetriNetUnfolder]: 0/393 cut-off events. [2023-08-31 12:09:09,942 INFO L131 PetriNetUnfolder]: For 30800/30800 co-relation queries the response was YES. [2023-08-31 12:09:09,942 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:09:09,942 INFO L208 CegarLoopForPetriNet]: trace histogram [56, 56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:09:09,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:09:09,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:09:09,942 INFO L85 PathProgramCache]: Analyzing trace with hash 743773961, now seen corresponding path program 1 times [2023-08-31 12:09:09,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:09:09,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552053608] [2023-08-31 12:09:09,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:09:09,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:09:10,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:09:10,021 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:09:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:09:10,109 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:09:10,110 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:09:10,110 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:09:10,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2023-08-31 12:09:10,110 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:09:10,110 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:09:10,111 WARN L233 ceAbstractionStarter]: 56 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:09:10,111 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 57 thread instances. [2023-08-31 12:09:10,203 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:09:10,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 888 places, 774 transitions, 5025 flow [2023-08-31 12:09:10,912 INFO L130 PetriNetUnfolder]: 58/1456 cut-off events. [2023-08-31 12:09:10,912 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-08-31 12:09:10,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3281 conditions, 1456 events. 58/1456 cut-off events. For 32452/32452 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 3263 event pairs, 0 based on Foata normal form. 0/1225 useless extension candidates. Maximal degree in co-relation 3178. Up to 116 conditions per place. [2023-08-31 12:09:10,994 INFO L82 GeneralOperation]: Start removeDead. Operand has 888 places, 774 transitions, 5025 flow [2023-08-31 12:09:10,997 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 882 places, 767 transitions, 5011 flow [2023-08-31 12:09:10,998 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:09:10,998 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 882 places, 767 transitions, 5011 flow [2023-08-31 12:09:10,998 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 882 places, 767 transitions, 5011 flow [2023-08-31 12:09:10,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 882 places, 767 transitions, 5011 flow [2023-08-31 12:09:11,408 INFO L130 PetriNetUnfolder]: 0/1107 cut-off events. [2023-08-31 12:09:11,409 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-08-31 12:09:11,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2932 conditions, 1107 events. 0/1107 cut-off events. For 32452/32452 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1878 event pairs, 0 based on Foata normal form. 0/993 useless extension candidates. Maximal degree in co-relation 0. Up to 58 conditions per place. [2023-08-31 12:09:11,560 INFO L119 LiptonReduction]: Number of co-enabled transitions 507528 [2023-08-31 12:09:20,149 INFO L134 LiptonReduction]: Checked pairs total: 908933 [2023-08-31 12:09:20,149 INFO L136 LiptonReduction]: Total number of compositions: 607 [2023-08-31 12:09:20,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:09:20,150 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:09:20,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:09:20,229 INFO L130 PetriNetUnfolder]: 0/400 cut-off events. [2023-08-31 12:09:20,229 INFO L131 PetriNetUnfolder]: For 32452/32452 co-relation queries the response was YES. [2023-08-31 12:09:20,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:09:20,229 INFO L208 CegarLoopForPetriNet]: trace histogram [57, 57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:09:20,229 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:09:20,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:09:20,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1299273029, now seen corresponding path program 1 times [2023-08-31 12:09:20,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:09:20,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172190887] [2023-08-31 12:09:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:09:20,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:09:20,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:09:20,298 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:09:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:09:20,393 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:09:20,393 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:09:20,394 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:09:20,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2023-08-31 12:09:20,394 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:09:20,394 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:09:20,394 WARN L233 ceAbstractionStarter]: 57 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:09:20,395 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 58 thread instances. [2023-08-31 12:09:20,485 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:09:20,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 903 places, 787 transitions, 5170 flow [2023-08-31 12:09:21,140 INFO L130 PetriNetUnfolder]: 59/1481 cut-off events. [2023-08-31 12:09:21,140 INFO L131 PetriNetUnfolder]: For 34162/34162 co-relation queries the response was YES. [2023-08-31 12:09:21,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3367 conditions, 1481 events. 59/1481 cut-off events. For 34162/34162 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 3311 event pairs, 0 based on Foata normal form. 0/1246 useless extension candidates. Maximal degree in co-relation 3263. Up to 118 conditions per place. [2023-08-31 12:09:21,212 INFO L82 GeneralOperation]: Start removeDead. Operand has 903 places, 787 transitions, 5170 flow [2023-08-31 12:09:21,215 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 897 places, 780 transitions, 5156 flow [2023-08-31 12:09:21,215 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:09:21,216 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 897 places, 780 transitions, 5156 flow [2023-08-31 12:09:21,216 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 897 places, 780 transitions, 5156 flow [2023-08-31 12:09:21,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 897 places, 780 transitions, 5156 flow [2023-08-31 12:09:21,621 INFO L130 PetriNetUnfolder]: 0/1126 cut-off events. [2023-08-31 12:09:21,621 INFO L131 PetriNetUnfolder]: For 34162/34162 co-relation queries the response was YES. [2023-08-31 12:09:21,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3012 conditions, 1126 events. 0/1126 cut-off events. For 34162/34162 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1892 event pairs, 0 based on Foata normal form. 0/1010 useless extension candidates. Maximal degree in co-relation 0. Up to 59 conditions per place. [2023-08-31 12:09:21,765 INFO L119 LiptonReduction]: Number of co-enabled transitions 525480 [2023-08-31 12:09:30,699 INFO L134 LiptonReduction]: Checked pairs total: 941937 [2023-08-31 12:09:30,700 INFO L136 LiptonReduction]: Total number of compositions: 621 [2023-08-31 12:09:30,701 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:09:30,701 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:09:30,701 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:09:30,785 INFO L130 PetriNetUnfolder]: 0/407 cut-off events. [2023-08-31 12:09:30,785 INFO L131 PetriNetUnfolder]: For 34162/34162 co-relation queries the response was YES. [2023-08-31 12:09:30,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:09:30,785 INFO L208 CegarLoopForPetriNet]: trace histogram [58, 58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:09:30,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:09:30,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:09:30,786 INFO L85 PathProgramCache]: Analyzing trace with hash -2044346435, now seen corresponding path program 1 times [2023-08-31 12:09:30,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:09:30,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587661467] [2023-08-31 12:09:30,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:09:30,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:09:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:09:30,852 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:09:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:09:30,931 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:09:30,931 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:09:30,931 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:09:30,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2023-08-31 12:09:30,931 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:09:30,931 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:09:30,932 WARN L233 ceAbstractionStarter]: 58 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:09:30,932 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 59 thread instances. [2023-08-31 12:09:31,022 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:09:31,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 918 places, 800 transitions, 5317 flow [2023-08-31 12:09:31,809 INFO L130 PetriNetUnfolder]: 60/1506 cut-off events. [2023-08-31 12:09:31,809 INFO L131 PetriNetUnfolder]: For 35931/35931 co-relation queries the response was YES. [2023-08-31 12:09:31,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3454 conditions, 1506 events. 60/1506 cut-off events. For 35931/35931 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 3396 event pairs, 0 based on Foata normal form. 0/1267 useless extension candidates. Maximal degree in co-relation 3349. Up to 120 conditions per place. [2023-08-31 12:09:31,877 INFO L82 GeneralOperation]: Start removeDead. Operand has 918 places, 800 transitions, 5317 flow [2023-08-31 12:09:31,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 912 places, 793 transitions, 5303 flow [2023-08-31 12:09:31,880 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:09:31,880 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 912 places, 793 transitions, 5303 flow [2023-08-31 12:09:31,880 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 912 places, 793 transitions, 5303 flow [2023-08-31 12:09:31,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 912 places, 793 transitions, 5303 flow [2023-08-31 12:09:32,312 INFO L130 PetriNetUnfolder]: 0/1145 cut-off events. [2023-08-31 12:09:32,312 INFO L131 PetriNetUnfolder]: For 35931/35931 co-relation queries the response was YES. [2023-08-31 12:09:32,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3093 conditions, 1145 events. 0/1145 cut-off events. For 35931/35931 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1958 event pairs, 0 based on Foata normal form. 0/1027 useless extension candidates. Maximal degree in co-relation 0. Up to 60 conditions per place. [2023-08-31 12:09:32,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 543744 [2023-08-31 12:09:41,263 INFO L134 LiptonReduction]: Checked pairs total: 959401 [2023-08-31 12:09:41,263 INFO L136 LiptonReduction]: Total number of compositions: 640 [2023-08-31 12:09:41,264 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:09:41,264 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:09:41,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:09:41,351 INFO L130 PetriNetUnfolder]: 0/414 cut-off events. [2023-08-31 12:09:41,351 INFO L131 PetriNetUnfolder]: For 35931/35931 co-relation queries the response was YES. [2023-08-31 12:09:41,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:09:41,351 INFO L208 CegarLoopForPetriNet]: trace histogram [59, 59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:09:41,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:09:41,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:09:41,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1594375119, now seen corresponding path program 1 times [2023-08-31 12:09:41,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:09:41,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650163724] [2023-08-31 12:09:41,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:09:41,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:09:41,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:09:41,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:09:41,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:09:41,509 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:09:41,509 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:09:41,509 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:09:41,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2023-08-31 12:09:41,510 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:09:41,510 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:09:41,510 WARN L233 ceAbstractionStarter]: 59 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:09:41,510 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 60 thread instances. [2023-08-31 12:09:41,603 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:09:41,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 933 places, 813 transitions, 5466 flow [2023-08-31 12:09:42,264 INFO L130 PetriNetUnfolder]: 61/1531 cut-off events. [2023-08-31 12:09:42,265 INFO L131 PetriNetUnfolder]: For 37760/37760 co-relation queries the response was YES. [2023-08-31 12:09:42,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3542 conditions, 1531 events. 61/1531 cut-off events. For 37760/37760 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 3441 event pairs, 0 based on Foata normal form. 0/1288 useless extension candidates. Maximal degree in co-relation 3436. Up to 122 conditions per place. [2023-08-31 12:09:42,325 INFO L82 GeneralOperation]: Start removeDead. Operand has 933 places, 813 transitions, 5466 flow [2023-08-31 12:09:42,328 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 927 places, 806 transitions, 5452 flow [2023-08-31 12:09:42,328 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:09:42,328 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 927 places, 806 transitions, 5452 flow [2023-08-31 12:09:42,328 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 927 places, 806 transitions, 5452 flow [2023-08-31 12:09:42,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 927 places, 806 transitions, 5452 flow [2023-08-31 12:09:42,770 INFO L130 PetriNetUnfolder]: 0/1164 cut-off events. [2023-08-31 12:09:42,770 INFO L131 PetriNetUnfolder]: For 37760/37760 co-relation queries the response was YES. [2023-08-31 12:09:42,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3175 conditions, 1164 events. 0/1164 cut-off events. For 37760/37760 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 1986 event pairs, 0 based on Foata normal form. 0/1044 useless extension candidates. Maximal degree in co-relation 0. Up to 61 conditions per place. [2023-08-31 12:09:42,928 INFO L119 LiptonReduction]: Number of co-enabled transitions 562320 [2023-08-31 12:09:51,947 INFO L134 LiptonReduction]: Checked pairs total: 995013 [2023-08-31 12:09:51,947 INFO L136 LiptonReduction]: Total number of compositions: 645 [2023-08-31 12:09:51,948 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:09:51,949 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:09:51,949 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:09:52,038 INFO L130 PetriNetUnfolder]: 0/421 cut-off events. [2023-08-31 12:09:52,039 INFO L131 PetriNetUnfolder]: For 37760/37760 co-relation queries the response was YES. [2023-08-31 12:09:52,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:09:52,039 INFO L208 CegarLoopForPetriNet]: trace histogram [60, 60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:09:52,039 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:09:52,039 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:09:52,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1906569790, now seen corresponding path program 1 times [2023-08-31 12:09:52,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:09:52,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610329477] [2023-08-31 12:09:52,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:09:52,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:09:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:09:52,108 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:09:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:09:52,196 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:09:52,196 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:09:52,196 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:09:52,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2023-08-31 12:09:52,197 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:09:52,197 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:09:52,197 WARN L233 ceAbstractionStarter]: 60 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:09:52,197 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 61 thread instances. [2023-08-31 12:09:52,293 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:09:52,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 948 places, 826 transitions, 5617 flow [2023-08-31 12:09:53,109 INFO L130 PetriNetUnfolder]: 62/1556 cut-off events. [2023-08-31 12:09:53,109 INFO L131 PetriNetUnfolder]: For 39650/39650 co-relation queries the response was YES. [2023-08-31 12:09:53,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3631 conditions, 1556 events. 62/1556 cut-off events. For 39650/39650 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 3499 event pairs, 0 based on Foata normal form. 0/1309 useless extension candidates. Maximal degree in co-relation 3524. Up to 124 conditions per place. [2023-08-31 12:09:53,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 948 places, 826 transitions, 5617 flow [2023-08-31 12:09:53,173 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 942 places, 819 transitions, 5603 flow [2023-08-31 12:09:53,173 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:09:53,173 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 942 places, 819 transitions, 5603 flow [2023-08-31 12:09:53,173 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 942 places, 819 transitions, 5603 flow [2023-08-31 12:09:53,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 942 places, 819 transitions, 5603 flow [2023-08-31 12:09:53,617 INFO L130 PetriNetUnfolder]: 0/1183 cut-off events. [2023-08-31 12:09:53,617 INFO L131 PetriNetUnfolder]: For 39650/39650 co-relation queries the response was YES. [2023-08-31 12:09:53,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3258 conditions, 1183 events. 0/1183 cut-off events. For 39650/39650 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2022 event pairs, 0 based on Foata normal form. 0/1061 useless extension candidates. Maximal degree in co-relation 0. Up to 62 conditions per place. [2023-08-31 12:09:53,779 INFO L119 LiptonReduction]: Number of co-enabled transitions 581208 [2023-08-31 12:10:03,013 INFO L134 LiptonReduction]: Checked pairs total: 952460 [2023-08-31 12:10:03,013 INFO L136 LiptonReduction]: Total number of compositions: 656 [2023-08-31 12:10:03,015 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:10:03,015 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:10:03,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:10:03,111 INFO L130 PetriNetUnfolder]: 0/428 cut-off events. [2023-08-31 12:10:03,111 INFO L131 PetriNetUnfolder]: For 39650/39650 co-relation queries the response was YES. [2023-08-31 12:10:03,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:10:03,112 INFO L208 CegarLoopForPetriNet]: trace histogram [61, 61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:10:03,112 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:10:03,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:10:03,112 INFO L85 PathProgramCache]: Analyzing trace with hash -239451673, now seen corresponding path program 1 times [2023-08-31 12:10:03,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:10:03,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511680760] [2023-08-31 12:10:03,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:10:03,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:10:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:10:03,186 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:10:03,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:10:03,294 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:10:03,294 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:10:03,294 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:10:03,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2023-08-31 12:10:03,294 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:10:03,295 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:10:03,295 WARN L233 ceAbstractionStarter]: 61 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:10:03,295 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 62 thread instances. [2023-08-31 12:10:03,397 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:10:03,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 963 places, 839 transitions, 5770 flow [2023-08-31 12:10:04,142 INFO L130 PetriNetUnfolder]: 63/1581 cut-off events. [2023-08-31 12:10:04,142 INFO L131 PetriNetUnfolder]: For 41602/41602 co-relation queries the response was YES. [2023-08-31 12:10:04,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3721 conditions, 1581 events. 63/1581 cut-off events. For 41602/41602 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 3585 event pairs, 0 based on Foata normal form. 0/1330 useless extension candidates. Maximal degree in co-relation 3613. Up to 126 conditions per place. [2023-08-31 12:10:04,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 963 places, 839 transitions, 5770 flow [2023-08-31 12:10:04,213 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 957 places, 832 transitions, 5756 flow [2023-08-31 12:10:04,213 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:10:04,213 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 957 places, 832 transitions, 5756 flow [2023-08-31 12:10:04,214 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 957 places, 832 transitions, 5756 flow [2023-08-31 12:10:04,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 957 places, 832 transitions, 5756 flow [2023-08-31 12:10:04,699 INFO L130 PetriNetUnfolder]: 0/1202 cut-off events. [2023-08-31 12:10:04,699 INFO L131 PetriNetUnfolder]: For 41602/41602 co-relation queries the response was YES. [2023-08-31 12:10:04,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3342 conditions, 1202 events. 0/1202 cut-off events. For 41602/41602 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2072 event pairs, 0 based on Foata normal form. 0/1078 useless extension candidates. Maximal degree in co-relation 0. Up to 63 conditions per place. [2023-08-31 12:10:04,873 INFO L119 LiptonReduction]: Number of co-enabled transitions 600408 [2023-08-31 12:10:14,290 INFO L134 LiptonReduction]: Checked pairs total: 1074785 [2023-08-31 12:10:14,290 INFO L136 LiptonReduction]: Total number of compositions: 662 [2023-08-31 12:10:14,291 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:10:14,292 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:10:14,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:10:14,389 INFO L130 PetriNetUnfolder]: 0/435 cut-off events. [2023-08-31 12:10:14,389 INFO L131 PetriNetUnfolder]: For 41602/41602 co-relation queries the response was YES. [2023-08-31 12:10:14,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:10:14,389 INFO L208 CegarLoopForPetriNet]: trace histogram [62, 62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:10:14,390 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:10:14,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:10:14,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1471878158, now seen corresponding path program 1 times [2023-08-31 12:10:14,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:10:14,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609781503] [2023-08-31 12:10:14,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:10:14,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:10:14,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:10:14,462 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:10:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:10:14,538 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:10:14,539 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:10:14,539 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:10:14,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2023-08-31 12:10:14,539 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:10:14,539 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:10:14,539 WARN L233 ceAbstractionStarter]: 62 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:10:14,539 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 63 thread instances. [2023-08-31 12:10:14,640 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:10:14,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 978 places, 852 transitions, 5925 flow [2023-08-31 12:10:15,349 INFO L130 PetriNetUnfolder]: 64/1606 cut-off events. [2023-08-31 12:10:15,349 INFO L131 PetriNetUnfolder]: For 43617/43617 co-relation queries the response was YES. [2023-08-31 12:10:15,431 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3812 conditions, 1606 events. 64/1606 cut-off events. For 43617/43617 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 3614 event pairs, 0 based on Foata normal form. 0/1351 useless extension candidates. Maximal degree in co-relation 3703. Up to 128 conditions per place. [2023-08-31 12:10:15,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 978 places, 852 transitions, 5925 flow [2023-08-31 12:10:15,434 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 972 places, 845 transitions, 5911 flow [2023-08-31 12:10:15,434 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:10:15,434 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 972 places, 845 transitions, 5911 flow [2023-08-31 12:10:15,435 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 972 places, 845 transitions, 5911 flow [2023-08-31 12:10:15,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 972 places, 845 transitions, 5911 flow [2023-08-31 12:10:15,929 INFO L130 PetriNetUnfolder]: 0/1221 cut-off events. [2023-08-31 12:10:15,929 INFO L131 PetriNetUnfolder]: For 43617/43617 co-relation queries the response was YES. [2023-08-31 12:10:15,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3427 conditions, 1221 events. 0/1221 cut-off events. For 43617/43617 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2082 event pairs, 0 based on Foata normal form. 0/1095 useless extension candidates. Maximal degree in co-relation 0. Up to 64 conditions per place. [2023-08-31 12:10:16,113 INFO L119 LiptonReduction]: Number of co-enabled transitions 619920 [2023-08-31 12:10:25,693 INFO L134 LiptonReduction]: Checked pairs total: 1104308 [2023-08-31 12:10:25,693 INFO L136 LiptonReduction]: Total number of compositions: 674 [2023-08-31 12:10:25,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:10:25,694 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:10:25,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:10:25,792 INFO L130 PetriNetUnfolder]: 0/442 cut-off events. [2023-08-31 12:10:25,792 INFO L131 PetriNetUnfolder]: For 43617/43617 co-relation queries the response was YES. [2023-08-31 12:10:25,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:10:25,792 INFO L208 CegarLoopForPetriNet]: trace histogram [63, 63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:10:25,792 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:10:25,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:10:25,793 INFO L85 PathProgramCache]: Analyzing trace with hash -136735832, now seen corresponding path program 1 times [2023-08-31 12:10:25,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:10:25,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715339954] [2023-08-31 12:10:25,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:10:25,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:10:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:10:25,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:10:25,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:10:25,971 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:10:25,972 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:10:25,972 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:10:25,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2023-08-31 12:10:25,972 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:10:25,973 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:10:25,973 WARN L233 ceAbstractionStarter]: 63 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:10:25,973 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 64 thread instances. [2023-08-31 12:10:26,104 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:10:26,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 993 places, 865 transitions, 6082 flow [2023-08-31 12:10:26,794 INFO L130 PetriNetUnfolder]: 65/1631 cut-off events. [2023-08-31 12:10:26,794 INFO L131 PetriNetUnfolder]: For 45696/45696 co-relation queries the response was YES. [2023-08-31 12:10:26,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3904 conditions, 1631 events. 65/1631 cut-off events. For 45696/45696 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 3696 event pairs, 0 based on Foata normal form. 0/1372 useless extension candidates. Maximal degree in co-relation 3794. Up to 130 conditions per place. [2023-08-31 12:10:26,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 993 places, 865 transitions, 6082 flow [2023-08-31 12:10:26,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 987 places, 858 transitions, 6068 flow [2023-08-31 12:10:26,899 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:10:26,899 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 987 places, 858 transitions, 6068 flow [2023-08-31 12:10:26,900 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 987 places, 858 transitions, 6068 flow [2023-08-31 12:10:26,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 987 places, 858 transitions, 6068 flow [2023-08-31 12:10:27,425 INFO L130 PetriNetUnfolder]: 0/1240 cut-off events. [2023-08-31 12:10:27,426 INFO L131 PetriNetUnfolder]: For 45696/45696 co-relation queries the response was YES. [2023-08-31 12:10:27,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3513 conditions, 1240 events. 0/1240 cut-off events. For 45696/45696 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2138 event pairs, 0 based on Foata normal form. 0/1112 useless extension candidates. Maximal degree in co-relation 0. Up to 65 conditions per place. [2023-08-31 12:10:27,619 INFO L119 LiptonReduction]: Number of co-enabled transitions 639744 [2023-08-31 12:10:37,250 INFO L134 LiptonReduction]: Checked pairs total: 1073853 [2023-08-31 12:10:37,251 INFO L136 LiptonReduction]: Total number of compositions: 683 [2023-08-31 12:10:37,252 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:10:37,252 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:10:37,252 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:10:37,433 INFO L130 PetriNetUnfolder]: 0/449 cut-off events. [2023-08-31 12:10:37,434 INFO L131 PetriNetUnfolder]: For 45696/45696 co-relation queries the response was YES. [2023-08-31 12:10:37,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:10:37,434 INFO L208 CegarLoopForPetriNet]: trace histogram [64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:10:37,434 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:10:37,437 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:10:37,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1286015690, now seen corresponding path program 1 times [2023-08-31 12:10:37,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:10:37,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802381803] [2023-08-31 12:10:37,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:10:37,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:10:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:10:37,510 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:10:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:10:37,622 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:10:37,623 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:10:37,623 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:10:37,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2023-08-31 12:10:37,624 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:10:37,625 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:10:37,626 WARN L233 ceAbstractionStarter]: 64 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:10:37,626 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 65 thread instances. [2023-08-31 12:10:37,726 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:10:37,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1008 places, 878 transitions, 6241 flow [2023-08-31 12:10:38,543 INFO L130 PetriNetUnfolder]: 66/1656 cut-off events. [2023-08-31 12:10:38,543 INFO L131 PetriNetUnfolder]: For 47840/47840 co-relation queries the response was YES. [2023-08-31 12:10:38,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3997 conditions, 1656 events. 66/1656 cut-off events. For 47840/47840 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 3722 event pairs, 0 based on Foata normal form. 0/1393 useless extension candidates. Maximal degree in co-relation 3886. Up to 132 conditions per place. [2023-08-31 12:10:38,654 INFO L82 GeneralOperation]: Start removeDead. Operand has 1008 places, 878 transitions, 6241 flow [2023-08-31 12:10:38,658 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1002 places, 871 transitions, 6227 flow [2023-08-31 12:10:38,658 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:10:38,658 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1002 places, 871 transitions, 6227 flow [2023-08-31 12:10:38,658 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1002 places, 871 transitions, 6227 flow [2023-08-31 12:10:38,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1002 places, 871 transitions, 6227 flow [2023-08-31 12:10:39,343 INFO L130 PetriNetUnfolder]: 0/1259 cut-off events. [2023-08-31 12:10:39,343 INFO L131 PetriNetUnfolder]: For 47840/47840 co-relation queries the response was YES. [2023-08-31 12:10:39,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3600 conditions, 1259 events. 0/1259 cut-off events. For 47840/47840 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2141 event pairs, 0 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 0. Up to 66 conditions per place. [2023-08-31 12:10:39,509 INFO L119 LiptonReduction]: Number of co-enabled transitions 659880 [2023-08-31 12:10:49,280 INFO L134 LiptonReduction]: Checked pairs total: 1151662 [2023-08-31 12:10:49,280 INFO L136 LiptonReduction]: Total number of compositions: 704 [2023-08-31 12:10:49,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:10:49,281 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:10:49,281 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:10:49,390 INFO L130 PetriNetUnfolder]: 0/456 cut-off events. [2023-08-31 12:10:49,390 INFO L131 PetriNetUnfolder]: For 47840/47840 co-relation queries the response was YES. [2023-08-31 12:10:49,390 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:10:49,390 INFO L208 CegarLoopForPetriNet]: trace histogram [65, 65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:10:49,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:10:49,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:10:49,391 INFO L85 PathProgramCache]: Analyzing trace with hash 643932552, now seen corresponding path program 1 times [2023-08-31 12:10:49,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:10:49,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807732756] [2023-08-31 12:10:49,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:10:49,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:10:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:10:49,494 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:10:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:10:49,607 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:10:49,607 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:10:49,607 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:10:49,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2023-08-31 12:10:49,607 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:10:49,607 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:10:49,607 WARN L233 ceAbstractionStarter]: 65 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:10:49,607 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 66 thread instances. [2023-08-31 12:10:49,706 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:10:49,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1023 places, 891 transitions, 6402 flow [2023-08-31 12:10:50,417 INFO L130 PetriNetUnfolder]: 67/1681 cut-off events. [2023-08-31 12:10:50,417 INFO L131 PetriNetUnfolder]: For 50050/50050 co-relation queries the response was YES. [2023-08-31 12:10:50,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4091 conditions, 1681 events. 67/1681 cut-off events. For 50050/50050 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 3798 event pairs, 0 based on Foata normal form. 0/1414 useless extension candidates. Maximal degree in co-relation 3979. Up to 134 conditions per place. [2023-08-31 12:10:50,526 INFO L82 GeneralOperation]: Start removeDead. Operand has 1023 places, 891 transitions, 6402 flow [2023-08-31 12:10:50,530 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1017 places, 884 transitions, 6388 flow [2023-08-31 12:10:50,530 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:10:50,531 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1017 places, 884 transitions, 6388 flow [2023-08-31 12:10:50,531 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1017 places, 884 transitions, 6388 flow [2023-08-31 12:10:50,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1017 places, 884 transitions, 6388 flow [2023-08-31 12:10:51,101 INFO L130 PetriNetUnfolder]: 0/1278 cut-off events. [2023-08-31 12:10:51,101 INFO L131 PetriNetUnfolder]: For 50050/50050 co-relation queries the response was YES. [2023-08-31 12:10:51,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3688 conditions, 1278 events. 0/1278 cut-off events. For 50050/50050 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2194 event pairs, 0 based on Foata normal form. 0/1146 useless extension candidates. Maximal degree in co-relation 0. Up to 67 conditions per place. [2023-08-31 12:10:51,291 INFO L119 LiptonReduction]: Number of co-enabled transitions 680328 [2023-08-31 12:11:00,918 INFO L134 LiptonReduction]: Checked pairs total: 1207908 [2023-08-31 12:11:00,918 INFO L136 LiptonReduction]: Total number of compositions: 706 [2023-08-31 12:11:00,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:11:00,919 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:11:00,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:11:01,028 INFO L130 PetriNetUnfolder]: 0/463 cut-off events. [2023-08-31 12:11:01,028 INFO L131 PetriNetUnfolder]: For 50050/50050 co-relation queries the response was YES. [2023-08-31 12:11:01,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:11:01,028 INFO L208 CegarLoopForPetriNet]: trace histogram [66, 66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:11:01,029 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:11:01,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:11:01,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1918253380, now seen corresponding path program 1 times [2023-08-31 12:11:01,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:11:01,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221003287] [2023-08-31 12:11:01,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:11:01,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:11:01,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:11:01,099 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:11:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:11:01,208 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:11:01,209 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:11:01,209 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:11:01,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2023-08-31 12:11:01,209 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:11:01,209 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:11:01,209 WARN L233 ceAbstractionStarter]: 66 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:11:01,209 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 67 thread instances. [2023-08-31 12:11:01,313 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:11:01,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1038 places, 904 transitions, 6565 flow [2023-08-31 12:11:02,111 INFO L130 PetriNetUnfolder]: 68/1706 cut-off events. [2023-08-31 12:11:02,111 INFO L131 PetriNetUnfolder]: For 52327/52327 co-relation queries the response was YES. [2023-08-31 12:11:02,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4186 conditions, 1706 events. 68/1706 cut-off events. For 52327/52327 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 3870 event pairs, 0 based on Foata normal form. 0/1435 useless extension candidates. Maximal degree in co-relation 4073. Up to 136 conditions per place. [2023-08-31 12:11:02,193 INFO L82 GeneralOperation]: Start removeDead. Operand has 1038 places, 904 transitions, 6565 flow [2023-08-31 12:11:02,197 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1032 places, 897 transitions, 6551 flow [2023-08-31 12:11:02,197 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:11:02,197 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1032 places, 897 transitions, 6551 flow [2023-08-31 12:11:02,197 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1032 places, 897 transitions, 6551 flow [2023-08-31 12:11:02,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1032 places, 897 transitions, 6551 flow [2023-08-31 12:11:02,741 INFO L130 PetriNetUnfolder]: 0/1297 cut-off events. [2023-08-31 12:11:02,741 INFO L131 PetriNetUnfolder]: For 52327/52327 co-relation queries the response was YES. [2023-08-31 12:11:02,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3777 conditions, 1297 events. 0/1297 cut-off events. For 52327/52327 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2241 event pairs, 0 based on Foata normal form. 0/1163 useless extension candidates. Maximal degree in co-relation 0. Up to 68 conditions per place. [2023-08-31 12:11:02,948 INFO L119 LiptonReduction]: Number of co-enabled transitions 701088 [2023-08-31 12:11:12,722 INFO L134 LiptonReduction]: Checked pairs total: 1220815 [2023-08-31 12:11:12,723 INFO L136 LiptonReduction]: Total number of compositions: 715 [2023-08-31 12:11:12,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:11:12,724 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:11:12,724 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:11:12,840 INFO L130 PetriNetUnfolder]: 0/470 cut-off events. [2023-08-31 12:11:12,840 INFO L131 PetriNetUnfolder]: For 52327/52327 co-relation queries the response was YES. [2023-08-31 12:11:12,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:11:12,841 INFO L208 CegarLoopForPetriNet]: trace histogram [67, 67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:11:12,841 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:11:12,841 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:11:12,841 INFO L85 PathProgramCache]: Analyzing trace with hash 848970800, now seen corresponding path program 1 times [2023-08-31 12:11:12,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:11:12,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791846225] [2023-08-31 12:11:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:11:12,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:11:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:11:12,951 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:11:12,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:11:13,060 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:11:13,060 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:11:13,060 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:11:13,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2023-08-31 12:11:13,061 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:11:13,061 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:11:13,061 WARN L233 ceAbstractionStarter]: 67 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:11:13,061 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 68 thread instances. [2023-08-31 12:11:13,177 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:11:13,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1053 places, 917 transitions, 6730 flow [2023-08-31 12:11:13,977 INFO L130 PetriNetUnfolder]: 69/1731 cut-off events. [2023-08-31 12:11:13,977 INFO L131 PetriNetUnfolder]: For 54672/54672 co-relation queries the response was YES. [2023-08-31 12:11:14,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4282 conditions, 1731 events. 69/1731 cut-off events. For 54672/54672 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4059 event pairs, 0 based on Foata normal form. 0/1456 useless extension candidates. Maximal degree in co-relation 4168. Up to 138 conditions per place. [2023-08-31 12:11:14,093 INFO L82 GeneralOperation]: Start removeDead. Operand has 1053 places, 917 transitions, 6730 flow [2023-08-31 12:11:14,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1047 places, 910 transitions, 6716 flow [2023-08-31 12:11:14,098 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:11:14,098 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1047 places, 910 transitions, 6716 flow [2023-08-31 12:11:14,098 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1047 places, 910 transitions, 6716 flow [2023-08-31 12:11:14,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1047 places, 910 transitions, 6716 flow [2023-08-31 12:11:14,806 INFO L130 PetriNetUnfolder]: 0/1316 cut-off events. [2023-08-31 12:11:14,806 INFO L131 PetriNetUnfolder]: For 54672/54672 co-relation queries the response was YES. [2023-08-31 12:11:14,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3867 conditions, 1316 events. 0/1316 cut-off events. For 54672/54672 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2267 event pairs, 0 based on Foata normal form. 0/1180 useless extension candidates. Maximal degree in co-relation 0. Up to 69 conditions per place. [2023-08-31 12:11:14,986 INFO L119 LiptonReduction]: Number of co-enabled transitions 722160 [2023-08-31 12:11:25,328 INFO L134 LiptonReduction]: Checked pairs total: 1272423 [2023-08-31 12:11:25,328 INFO L136 LiptonReduction]: Total number of compositions: 731 [2023-08-31 12:11:25,329 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:11:25,329 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:11:25,329 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:11:25,448 INFO L130 PetriNetUnfolder]: 0/477 cut-off events. [2023-08-31 12:11:25,448 INFO L131 PetriNetUnfolder]: For 54672/54672 co-relation queries the response was YES. [2023-08-31 12:11:25,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:11:25,448 INFO L208 CegarLoopForPetriNet]: trace histogram [68, 68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:11:25,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:11:25,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:11:25,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1509886656, now seen corresponding path program 1 times [2023-08-31 12:11:25,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:11:25,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737311934] [2023-08-31 12:11:25,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:11:25,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:11:25,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:11:25,527 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:11:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:11:25,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:11:25,655 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:11:25,655 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:11:25,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2023-08-31 12:11:25,656 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:11:25,656 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:11:25,656 WARN L233 ceAbstractionStarter]: 68 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:11:25,656 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 69 thread instances. [2023-08-31 12:11:25,756 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:11:25,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1068 places, 930 transitions, 6897 flow [2023-08-31 12:11:26,671 INFO L130 PetriNetUnfolder]: 70/1756 cut-off events. [2023-08-31 12:11:26,671 INFO L131 PetriNetUnfolder]: For 57086/57086 co-relation queries the response was YES. [2023-08-31 12:11:26,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4379 conditions, 1756 events. 70/1756 cut-off events. For 57086/57086 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 3977 event pairs, 0 based on Foata normal form. 0/1477 useless extension candidates. Maximal degree in co-relation 4264. Up to 140 conditions per place. [2023-08-31 12:11:26,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 1068 places, 930 transitions, 6897 flow [2023-08-31 12:11:26,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1062 places, 923 transitions, 6883 flow [2023-08-31 12:11:26,753 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:11:26,753 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1062 places, 923 transitions, 6883 flow [2023-08-31 12:11:26,753 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1062 places, 923 transitions, 6883 flow [2023-08-31 12:11:26,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1062 places, 923 transitions, 6883 flow [2023-08-31 12:11:27,329 INFO L130 PetriNetUnfolder]: 0/1335 cut-off events. [2023-08-31 12:11:27,329 INFO L131 PetriNetUnfolder]: For 57086/57086 co-relation queries the response was YES. [2023-08-31 12:11:27,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3958 conditions, 1335 events. 0/1335 cut-off events. For 57086/57086 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2310 event pairs, 0 based on Foata normal form. 0/1197 useless extension candidates. Maximal degree in co-relation 0. Up to 70 conditions per place. [2023-08-31 12:11:27,553 INFO L119 LiptonReduction]: Number of co-enabled transitions 743544 [2023-08-31 12:11:38,062 INFO L134 LiptonReduction]: Checked pairs total: 1298736 [2023-08-31 12:11:38,063 INFO L136 LiptonReduction]: Total number of compositions: 735 [2023-08-31 12:11:38,063 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:11:38,064 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:11:38,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:11:38,184 INFO L130 PetriNetUnfolder]: 0/484 cut-off events. [2023-08-31 12:11:38,184 INFO L131 PetriNetUnfolder]: For 57086/57086 co-relation queries the response was YES. [2023-08-31 12:11:38,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:11:38,184 INFO L208 CegarLoopForPetriNet]: trace histogram [69, 69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:11:38,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:11:38,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:11:38,185 INFO L85 PathProgramCache]: Analyzing trace with hash 19357972, now seen corresponding path program 1 times [2023-08-31 12:11:38,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:11:38,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049913284] [2023-08-31 12:11:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:11:38,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:11:38,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:11:38,265 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:11:38,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:11:38,375 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:11:38,375 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:11:38,375 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:11:38,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2023-08-31 12:11:38,376 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:11:38,376 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:11:38,376 WARN L233 ceAbstractionStarter]: 69 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:11:38,376 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 70 thread instances. [2023-08-31 12:11:38,541 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:11:38,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1083 places, 943 transitions, 7066 flow [2023-08-31 12:11:39,337 INFO L130 PetriNetUnfolder]: 71/1781 cut-off events. [2023-08-31 12:11:39,337 INFO L131 PetriNetUnfolder]: For 59570/59570 co-relation queries the response was YES. [2023-08-31 12:11:39,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4477 conditions, 1781 events. 71/1781 cut-off events. For 59570/59570 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 3995 event pairs, 0 based on Foata normal form. 0/1498 useless extension candidates. Maximal degree in co-relation 4361. Up to 142 conditions per place. [2023-08-31 12:11:39,460 INFO L82 GeneralOperation]: Start removeDead. Operand has 1083 places, 943 transitions, 7066 flow [2023-08-31 12:11:39,465 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1077 places, 936 transitions, 7052 flow [2023-08-31 12:11:39,465 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:11:39,465 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1077 places, 936 transitions, 7052 flow [2023-08-31 12:11:39,465 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1077 places, 936 transitions, 7052 flow [2023-08-31 12:11:39,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1077 places, 936 transitions, 7052 flow [2023-08-31 12:11:40,068 INFO L130 PetriNetUnfolder]: 0/1354 cut-off events. [2023-08-31 12:11:40,068 INFO L131 PetriNetUnfolder]: For 59570/59570 co-relation queries the response was YES. [2023-08-31 12:11:40,068 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4050 conditions, 1354 events. 0/1354 cut-off events. For 59570/59570 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2292 event pairs, 0 based on Foata normal form. 0/1214 useless extension candidates. Maximal degree in co-relation 0. Up to 71 conditions per place. [2023-08-31 12:11:40,476 INFO L119 LiptonReduction]: Number of co-enabled transitions 765240 [2023-08-31 12:11:51,091 INFO L134 LiptonReduction]: Checked pairs total: 1342666 [2023-08-31 12:11:51,091 INFO L136 LiptonReduction]: Total number of compositions: 740 [2023-08-31 12:11:51,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:11:51,092 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:11:51,092 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:11:51,218 INFO L130 PetriNetUnfolder]: 0/491 cut-off events. [2023-08-31 12:11:51,218 INFO L131 PetriNetUnfolder]: For 59570/59570 co-relation queries the response was YES. [2023-08-31 12:11:51,218 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:11:51,218 INFO L208 CegarLoopForPetriNet]: trace histogram [70, 70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:11:51,218 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:11:51,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:11:51,219 INFO L85 PathProgramCache]: Analyzing trace with hash 651341492, now seen corresponding path program 1 times [2023-08-31 12:11:51,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:11:51,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [126419354] [2023-08-31 12:11:51,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:11:51,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:11:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:11:51,305 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:11:51,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:11:51,403 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:11:51,403 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:11:51,403 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:11:51,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2023-08-31 12:11:51,403 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:11:51,404 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:11:51,404 WARN L233 ceAbstractionStarter]: 70 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:11:51,404 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 71 thread instances. [2023-08-31 12:11:51,505 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:11:51,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1098 places, 956 transitions, 7237 flow [2023-08-31 12:11:52,368 INFO L130 PetriNetUnfolder]: 72/1806 cut-off events. [2023-08-31 12:11:52,369 INFO L131 PetriNetUnfolder]: For 62125/62125 co-relation queries the response was YES. [2023-08-31 12:11:52,498 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4576 conditions, 1806 events. 72/1806 cut-off events. For 62125/62125 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4080 event pairs, 0 based on Foata normal form. 0/1519 useless extension candidates. Maximal degree in co-relation 4459. Up to 144 conditions per place. [2023-08-31 12:11:52,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 1098 places, 956 transitions, 7237 flow [2023-08-31 12:11:52,502 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1092 places, 949 transitions, 7223 flow [2023-08-31 12:11:52,502 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:11:52,502 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1092 places, 949 transitions, 7223 flow [2023-08-31 12:11:52,503 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1092 places, 949 transitions, 7223 flow [2023-08-31 12:11:52,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1092 places, 949 transitions, 7223 flow [2023-08-31 12:11:53,258 INFO L130 PetriNetUnfolder]: 0/1373 cut-off events. [2023-08-31 12:11:53,258 INFO L131 PetriNetUnfolder]: For 62125/62125 co-relation queries the response was YES. [2023-08-31 12:11:53,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4143 conditions, 1373 events. 0/1373 cut-off events. For 62125/62125 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2356 event pairs, 0 based on Foata normal form. 0/1231 useless extension candidates. Maximal degree in co-relation 0. Up to 72 conditions per place. [2023-08-31 12:11:53,465 INFO L119 LiptonReduction]: Number of co-enabled transitions 787248 [2023-08-31 12:12:04,297 INFO L134 LiptonReduction]: Checked pairs total: 1357158 [2023-08-31 12:12:04,297 INFO L136 LiptonReduction]: Total number of compositions: 759 [2023-08-31 12:12:04,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:12:04,298 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:12:04,298 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:12:04,429 INFO L130 PetriNetUnfolder]: 0/498 cut-off events. [2023-08-31 12:12:04,429 INFO L131 PetriNetUnfolder]: For 62125/62125 co-relation queries the response was YES. [2023-08-31 12:12:04,429 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:12:04,430 INFO L208 CegarLoopForPetriNet]: trace histogram [71, 71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:12:04,430 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:12:04,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:12:04,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1076607011, now seen corresponding path program 1 times [2023-08-31 12:12:04,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:12:04,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307143371] [2023-08-31 12:12:04,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:12:04,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:12:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:12:04,537 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:12:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:12:04,657 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:12:04,657 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:12:04,657 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:12:04,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2023-08-31 12:12:04,658 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:12:04,658 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:12:04,658 WARN L233 ceAbstractionStarter]: 71 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:12:04,658 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 72 thread instances. [2023-08-31 12:12:04,764 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:12:04,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1113 places, 969 transitions, 7410 flow [2023-08-31 12:12:05,811 INFO L130 PetriNetUnfolder]: 73/1831 cut-off events. [2023-08-31 12:12:05,811 INFO L131 PetriNetUnfolder]: For 64752/64752 co-relation queries the response was YES. [2023-08-31 12:12:05,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4676 conditions, 1831 events. 73/1831 cut-off events. For 64752/64752 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4145 event pairs, 0 based on Foata normal form. 0/1540 useless extension candidates. Maximal degree in co-relation 4558. Up to 146 conditions per place. [2023-08-31 12:12:05,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 1113 places, 969 transitions, 7410 flow [2023-08-31 12:12:05,897 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1107 places, 962 transitions, 7396 flow [2023-08-31 12:12:05,897 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:12:05,898 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1107 places, 962 transitions, 7396 flow [2023-08-31 12:12:05,898 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1107 places, 962 transitions, 7396 flow [2023-08-31 12:12:05,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1107 places, 962 transitions, 7396 flow [2023-08-31 12:12:06,709 INFO L130 PetriNetUnfolder]: 0/1392 cut-off events. [2023-08-31 12:12:06,709 INFO L131 PetriNetUnfolder]: For 64752/64752 co-relation queries the response was YES. [2023-08-31 12:12:06,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4237 conditions, 1392 events. 0/1392 cut-off events. For 64752/64752 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2379 event pairs, 0 based on Foata normal form. 0/1248 useless extension candidates. Maximal degree in co-relation 0. Up to 73 conditions per place. [2023-08-31 12:12:06,921 INFO L119 LiptonReduction]: Number of co-enabled transitions 809568 [2023-08-31 12:12:17,923 INFO L134 LiptonReduction]: Checked pairs total: 1443461 [2023-08-31 12:12:17,923 INFO L136 LiptonReduction]: Total number of compositions: 765 [2023-08-31 12:12:17,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:12:17,925 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:12:17,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:12:18,059 INFO L130 PetriNetUnfolder]: 0/505 cut-off events. [2023-08-31 12:12:18,059 INFO L131 PetriNetUnfolder]: For 64752/64752 co-relation queries the response was YES. [2023-08-31 12:12:18,059 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:12:18,059 INFO L208 CegarLoopForPetriNet]: trace histogram [72, 72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:12:18,059 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:12:18,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:12:18,060 INFO L85 PathProgramCache]: Analyzing trace with hash 728248504, now seen corresponding path program 1 times [2023-08-31 12:12:18,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:12:18,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000595562] [2023-08-31 12:12:18,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:12:18,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:12:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:12:18,146 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:12:18,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:12:18,261 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:12:18,261 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:12:18,261 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:12:18,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2023-08-31 12:12:18,262 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:12:18,262 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:12:18,262 WARN L233 ceAbstractionStarter]: 72 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:12:18,262 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 73 thread instances. [2023-08-31 12:12:18,364 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:12:18,368 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1128 places, 982 transitions, 7585 flow [2023-08-31 12:12:19,294 INFO L130 PetriNetUnfolder]: 74/1856 cut-off events. [2023-08-31 12:12:19,294 INFO L131 PetriNetUnfolder]: For 67452/67452 co-relation queries the response was YES. [2023-08-31 12:12:19,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4777 conditions, 1856 events. 74/1856 cut-off events. For 67452/67452 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4335 event pairs, 0 based on Foata normal form. 0/1561 useless extension candidates. Maximal degree in co-relation 4658. Up to 148 conditions per place. [2023-08-31 12:12:19,400 INFO L82 GeneralOperation]: Start removeDead. Operand has 1128 places, 982 transitions, 7585 flow [2023-08-31 12:12:19,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1122 places, 975 transitions, 7571 flow [2023-08-31 12:12:19,404 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:12:19,404 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1122 places, 975 transitions, 7571 flow [2023-08-31 12:12:19,405 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1122 places, 975 transitions, 7571 flow [2023-08-31 12:12:19,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1122 places, 975 transitions, 7571 flow [2023-08-31 12:12:20,054 INFO L130 PetriNetUnfolder]: 0/1411 cut-off events. [2023-08-31 12:12:20,055 INFO L131 PetriNetUnfolder]: For 67452/67452 co-relation queries the response was YES. [2023-08-31 12:12:20,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4332 conditions, 1411 events. 0/1411 cut-off events. For 67452/67452 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2400 event pairs, 0 based on Foata normal form. 0/1265 useless extension candidates. Maximal degree in co-relation 0. Up to 74 conditions per place. [2023-08-31 12:12:20,313 INFO L119 LiptonReduction]: Number of co-enabled transitions 832200 [2023-08-31 12:12:31,035 INFO L134 LiptonReduction]: Checked pairs total: 1372140 [2023-08-31 12:12:31,035 INFO L136 LiptonReduction]: Total number of compositions: 772 [2023-08-31 12:12:31,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:12:31,036 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:12:31,036 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:12:31,173 INFO L130 PetriNetUnfolder]: 0/512 cut-off events. [2023-08-31 12:12:31,173 INFO L131 PetriNetUnfolder]: For 67452/67452 co-relation queries the response was YES. [2023-08-31 12:12:31,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:12:31,173 INFO L208 CegarLoopForPetriNet]: trace histogram [73, 73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:12:31,173 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:12:31,173 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:12:31,173 INFO L85 PathProgramCache]: Analyzing trace with hash 281508607, now seen corresponding path program 1 times [2023-08-31 12:12:31,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:12:31,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482708931] [2023-08-31 12:12:31,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:12:31,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:12:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:12:31,282 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:12:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:12:31,380 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:12:31,380 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:12:31,380 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:12:31,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2023-08-31 12:12:31,381 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:12:31,381 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:12:31,381 WARN L233 ceAbstractionStarter]: 73 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:12:31,381 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 74 thread instances. [2023-08-31 12:12:31,487 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:12:31,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1143 places, 995 transitions, 7762 flow [2023-08-31 12:12:32,422 INFO L130 PetriNetUnfolder]: 75/1881 cut-off events. [2023-08-31 12:12:32,422 INFO L131 PetriNetUnfolder]: For 70226/70226 co-relation queries the response was YES. [2023-08-31 12:12:32,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4879 conditions, 1881 events. 75/1881 cut-off events. For 70226/70226 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4265 event pairs, 0 based on Foata normal form. 0/1582 useless extension candidates. Maximal degree in co-relation 4759. Up to 150 conditions per place. [2023-08-31 12:12:32,537 INFO L82 GeneralOperation]: Start removeDead. Operand has 1143 places, 995 transitions, 7762 flow [2023-08-31 12:12:32,541 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1137 places, 988 transitions, 7748 flow [2023-08-31 12:12:32,541 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:12:32,541 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1137 places, 988 transitions, 7748 flow [2023-08-31 12:12:32,541 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1137 places, 988 transitions, 7748 flow [2023-08-31 12:12:32,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1137 places, 988 transitions, 7748 flow [2023-08-31 12:12:33,203 INFO L130 PetriNetUnfolder]: 0/1430 cut-off events. [2023-08-31 12:12:33,203 INFO L131 PetriNetUnfolder]: For 70226/70226 co-relation queries the response was YES. [2023-08-31 12:12:33,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4428 conditions, 1430 events. 0/1430 cut-off events. For 70226/70226 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2465 event pairs, 0 based on Foata normal form. 0/1282 useless extension candidates. Maximal degree in co-relation 0. Up to 75 conditions per place. [2023-08-31 12:12:33,469 INFO L119 LiptonReduction]: Number of co-enabled transitions 855144 [2023-08-31 12:12:44,284 INFO L134 LiptonReduction]: Checked pairs total: 1497435 [2023-08-31 12:12:44,284 INFO L136 LiptonReduction]: Total number of compositions: 789 [2023-08-31 12:12:44,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:12:44,285 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:12:44,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:12:44,428 INFO L130 PetriNetUnfolder]: 0/519 cut-off events. [2023-08-31 12:12:44,428 INFO L131 PetriNetUnfolder]: For 70226/70226 co-relation queries the response was YES. [2023-08-31 12:12:44,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:12:44,428 INFO L208 CegarLoopForPetriNet]: trace histogram [74, 74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:12:44,428 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:12:44,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:12:44,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1430846013, now seen corresponding path program 1 times [2023-08-31 12:12:44,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:12:44,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082828945] [2023-08-31 12:12:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:12:44,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:12:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:12:44,527 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:12:44,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:12:44,631 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:12:44,631 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:12:44,631 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:12:44,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2023-08-31 12:12:44,631 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:12:44,632 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:12:44,632 WARN L233 ceAbstractionStarter]: 74 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:12:44,632 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 75 thread instances. [2023-08-31 12:12:44,734 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:12:44,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1158 places, 1008 transitions, 7941 flow [2023-08-31 12:12:45,698 INFO L130 PetriNetUnfolder]: 76/1906 cut-off events. [2023-08-31 12:12:45,698 INFO L131 PetriNetUnfolder]: For 73075/73075 co-relation queries the response was YES. [2023-08-31 12:12:45,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4982 conditions, 1906 events. 76/1906 cut-off events. For 73075/73075 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4324 event pairs, 0 based on Foata normal form. 0/1603 useless extension candidates. Maximal degree in co-relation 4861. Up to 152 conditions per place. [2023-08-31 12:12:45,824 INFO L82 GeneralOperation]: Start removeDead. Operand has 1158 places, 1008 transitions, 7941 flow [2023-08-31 12:12:45,828 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1152 places, 1001 transitions, 7927 flow [2023-08-31 12:12:45,828 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:12:45,828 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1152 places, 1001 transitions, 7927 flow [2023-08-31 12:12:45,828 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1152 places, 1001 transitions, 7927 flow [2023-08-31 12:12:45,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1152 places, 1001 transitions, 7927 flow [2023-08-31 12:12:46,519 INFO L130 PetriNetUnfolder]: 0/1449 cut-off events. [2023-08-31 12:12:46,519 INFO L131 PetriNetUnfolder]: For 73075/73075 co-relation queries the response was YES. [2023-08-31 12:12:46,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4525 conditions, 1449 events. 0/1449 cut-off events. For 73075/73075 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2502 event pairs, 0 based on Foata normal form. 0/1299 useless extension candidates. Maximal degree in co-relation 0. Up to 76 conditions per place. [2023-08-31 12:12:46,793 INFO L119 LiptonReduction]: Number of co-enabled transitions 878400 [2023-08-31 12:12:57,974 INFO L134 LiptonReduction]: Checked pairs total: 1541475 [2023-08-31 12:12:57,974 INFO L136 LiptonReduction]: Total number of compositions: 799 [2023-08-31 12:12:57,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:12:57,975 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:12:57,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:12:58,123 INFO L130 PetriNetUnfolder]: 0/526 cut-off events. [2023-08-31 12:12:58,123 INFO L131 PetriNetUnfolder]: For 73075/73075 co-relation queries the response was YES. [2023-08-31 12:12:58,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:12:58,123 INFO L208 CegarLoopForPetriNet]: trace histogram [75, 75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:12:58,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:12:58,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:12:58,123 INFO L85 PathProgramCache]: Analyzing trace with hash 1453530248, now seen corresponding path program 1 times [2023-08-31 12:12:58,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:12:58,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659787682] [2023-08-31 12:12:58,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:12:58,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:12:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:12:58,213 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:12:58,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:12:58,330 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:12:58,330 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:12:58,330 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:12:58,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2023-08-31 12:12:58,330 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:12:58,331 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:12:58,331 WARN L233 ceAbstractionStarter]: 75 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:12:58,331 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 76 thread instances. [2023-08-31 12:12:58,438 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:12:58,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1173 places, 1021 transitions, 8122 flow [2023-08-31 12:12:59,456 INFO L130 PetriNetUnfolder]: 77/1931 cut-off events. [2023-08-31 12:12:59,456 INFO L131 PetriNetUnfolder]: For 76000/76000 co-relation queries the response was YES. [2023-08-31 12:12:59,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5086 conditions, 1931 events. 77/1931 cut-off events. For 76000/76000 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4356 event pairs, 0 based on Foata normal form. 0/1624 useless extension candidates. Maximal degree in co-relation 4964. Up to 154 conditions per place. [2023-08-31 12:12:59,594 INFO L82 GeneralOperation]: Start removeDead. Operand has 1173 places, 1021 transitions, 8122 flow [2023-08-31 12:12:59,598 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1167 places, 1014 transitions, 8108 flow [2023-08-31 12:12:59,598 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:12:59,598 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1167 places, 1014 transitions, 8108 flow [2023-08-31 12:12:59,599 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1167 places, 1014 transitions, 8108 flow [2023-08-31 12:12:59,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1167 places, 1014 transitions, 8108 flow [2023-08-31 12:13:00,303 INFO L130 PetriNetUnfolder]: 0/1468 cut-off events. [2023-08-31 12:13:00,304 INFO L131 PetriNetUnfolder]: For 76000/76000 co-relation queries the response was YES. [2023-08-31 12:13:00,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4623 conditions, 1468 events. 0/1468 cut-off events. For 76000/76000 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2498 event pairs, 0 based on Foata normal form. 0/1316 useless extension candidates. Maximal degree in co-relation 0. Up to 77 conditions per place. [2023-08-31 12:13:00,589 INFO L119 LiptonReduction]: Number of co-enabled transitions 901968 [2023-08-31 12:13:12,058 INFO L134 LiptonReduction]: Checked pairs total: 1588770 [2023-08-31 12:13:12,058 INFO L136 LiptonReduction]: Total number of compositions: 804 [2023-08-31 12:13:12,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:13:12,060 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:13:12,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:13:12,212 INFO L130 PetriNetUnfolder]: 0/533 cut-off events. [2023-08-31 12:13:12,212 INFO L131 PetriNetUnfolder]: For 76000/76000 co-relation queries the response was YES. [2023-08-31 12:13:12,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:13:12,212 INFO L208 CegarLoopForPetriNet]: trace histogram [76, 76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:13:12,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:13:12,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:13:12,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1445368779, now seen corresponding path program 1 times [2023-08-31 12:13:12,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:13:12,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761383517] [2023-08-31 12:13:12,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:13:12,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:13:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:13:12,316 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:13:12,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:13:12,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:13:12,427 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:13:12,428 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:13:12,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2023-08-31 12:13:12,428 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:13:12,428 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:13:12,428 WARN L233 ceAbstractionStarter]: 76 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:13:12,428 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 77 thread instances. [2023-08-31 12:13:12,633 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:13:12,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1188 places, 1034 transitions, 8305 flow [2023-08-31 12:13:13,630 INFO L130 PetriNetUnfolder]: 78/1956 cut-off events. [2023-08-31 12:13:13,631 INFO L131 PetriNetUnfolder]: For 79002/79002 co-relation queries the response was YES. [2023-08-31 12:13:13,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5191 conditions, 1956 events. 78/1956 cut-off events. For 79002/79002 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4417 event pairs, 0 based on Foata normal form. 0/1645 useless extension candidates. Maximal degree in co-relation 5068. Up to 156 conditions per place. [2023-08-31 12:13:13,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 1188 places, 1034 transitions, 8305 flow [2023-08-31 12:13:13,788 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1182 places, 1027 transitions, 8291 flow [2023-08-31 12:13:13,788 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:13:13,788 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1182 places, 1027 transitions, 8291 flow [2023-08-31 12:13:13,789 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1182 places, 1027 transitions, 8291 flow [2023-08-31 12:13:13,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1182 places, 1027 transitions, 8291 flow [2023-08-31 12:13:14,530 INFO L130 PetriNetUnfolder]: 0/1487 cut-off events. [2023-08-31 12:13:14,531 INFO L131 PetriNetUnfolder]: For 79002/79002 co-relation queries the response was YES. [2023-08-31 12:13:14,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4722 conditions, 1487 events. 0/1487 cut-off events. For 79002/79002 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2540 event pairs, 0 based on Foata normal form. 0/1333 useless extension candidates. Maximal degree in co-relation 0. Up to 78 conditions per place. [2023-08-31 12:13:15,089 INFO L119 LiptonReduction]: Number of co-enabled transitions 925848 [2023-08-31 12:13:26,640 INFO L134 LiptonReduction]: Checked pairs total: 1507134 [2023-08-31 12:13:26,641 INFO L136 LiptonReduction]: Total number of compositions: 820 [2023-08-31 12:13:26,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:13:26,642 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:13:26,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:13:26,798 INFO L130 PetriNetUnfolder]: 0/540 cut-off events. [2023-08-31 12:13:26,798 INFO L131 PetriNetUnfolder]: For 79002/79002 co-relation queries the response was YES. [2023-08-31 12:13:26,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:13:26,798 INFO L208 CegarLoopForPetriNet]: trace histogram [77, 77, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:13:26,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:13:26,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:13:26,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1226940987, now seen corresponding path program 1 times [2023-08-31 12:13:26,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:13:26,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467466890] [2023-08-31 12:13:26,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:13:26,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:13:26,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:13:26,963 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:13:26,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:13:27,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:13:27,075 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:13:27,075 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:13:27,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2023-08-31 12:13:27,075 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:13:27,075 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:13:27,075 WARN L233 ceAbstractionStarter]: 77 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:13:27,075 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 78 thread instances. [2023-08-31 12:13:27,193 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:13:27,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1203 places, 1047 transitions, 8490 flow [2023-08-31 12:13:28,195 INFO L130 PetriNetUnfolder]: 79/1981 cut-off events. [2023-08-31 12:13:28,195 INFO L131 PetriNetUnfolder]: For 82082/82082 co-relation queries the response was YES. [2023-08-31 12:13:28,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5297 conditions, 1981 events. 79/1981 cut-off events. For 82082/82082 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4513 event pairs, 0 based on Foata normal form. 0/1666 useless extension candidates. Maximal degree in co-relation 5173. Up to 158 conditions per place. [2023-08-31 12:13:28,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 1203 places, 1047 transitions, 8490 flow [2023-08-31 12:13:28,356 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1197 places, 1040 transitions, 8476 flow [2023-08-31 12:13:28,356 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:13:28,356 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1197 places, 1040 transitions, 8476 flow [2023-08-31 12:13:28,356 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1197 places, 1040 transitions, 8476 flow [2023-08-31 12:13:28,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1197 places, 1040 transitions, 8476 flow [2023-08-31 12:13:29,270 INFO L130 PetriNetUnfolder]: 0/1506 cut-off events. [2023-08-31 12:13:29,271 INFO L131 PetriNetUnfolder]: For 82082/82082 co-relation queries the response was YES. [2023-08-31 12:13:29,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4822 conditions, 1506 events. 0/1506 cut-off events. For 82082/82082 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2614 event pairs, 0 based on Foata normal form. 0/1350 useless extension candidates. Maximal degree in co-relation 0. Up to 79 conditions per place. [2023-08-31 12:13:29,528 INFO L119 LiptonReduction]: Number of co-enabled transitions 950040 [2023-08-31 12:13:41,055 INFO L134 LiptonReduction]: Checked pairs total: 1670607 [2023-08-31 12:13:41,056 INFO L136 LiptonReduction]: Total number of compositions: 824 [2023-08-31 12:13:41,057 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:13:41,057 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:13:41,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:13:41,215 INFO L130 PetriNetUnfolder]: 0/547 cut-off events. [2023-08-31 12:13:41,215 INFO L131 PetriNetUnfolder]: For 82082/82082 co-relation queries the response was YES. [2023-08-31 12:13:41,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:13:41,215 INFO L208 CegarLoopForPetriNet]: trace histogram [78, 78, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:13:41,216 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:13:41,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:13:41,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1206442516, now seen corresponding path program 1 times [2023-08-31 12:13:41,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:13:41,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514907644] [2023-08-31 12:13:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:13:41,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:13:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:13:41,395 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:13:41,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:13:41,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:13:41,532 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:13:41,532 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:13:41,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2023-08-31 12:13:41,532 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:13:41,533 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:13:41,533 WARN L233 ceAbstractionStarter]: 78 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:13:41,533 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 79 thread instances. [2023-08-31 12:13:41,656 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:13:41,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1218 places, 1060 transitions, 8677 flow [2023-08-31 12:13:42,715 INFO L130 PetriNetUnfolder]: 80/2006 cut-off events. [2023-08-31 12:13:42,715 INFO L131 PetriNetUnfolder]: For 85241/85241 co-relation queries the response was YES. [2023-08-31 12:13:42,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5404 conditions, 2006 events. 80/2006 cut-off events. For 85241/85241 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4554 event pairs, 0 based on Foata normal form. 0/1687 useless extension candidates. Maximal degree in co-relation 5279. Up to 160 conditions per place. [2023-08-31 12:13:42,875 INFO L82 GeneralOperation]: Start removeDead. Operand has 1218 places, 1060 transitions, 8677 flow [2023-08-31 12:13:42,880 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1212 places, 1053 transitions, 8663 flow [2023-08-31 12:13:42,880 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:13:42,880 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1212 places, 1053 transitions, 8663 flow [2023-08-31 12:13:42,880 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1212 places, 1053 transitions, 8663 flow [2023-08-31 12:13:42,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1212 places, 1053 transitions, 8663 flow [2023-08-31 12:13:43,783 INFO L130 PetriNetUnfolder]: 0/1525 cut-off events. [2023-08-31 12:13:43,784 INFO L131 PetriNetUnfolder]: For 85241/85241 co-relation queries the response was YES. [2023-08-31 12:13:43,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4923 conditions, 1525 events. 0/1525 cut-off events. For 85241/85241 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2630 event pairs, 0 based on Foata normal form. 0/1367 useless extension candidates. Maximal degree in co-relation 0. Up to 80 conditions per place. [2023-08-31 12:13:44,239 INFO L119 LiptonReduction]: Number of co-enabled transitions 974544 [2023-08-31 12:13:55,984 INFO L134 LiptonReduction]: Checked pairs total: 1718743 [2023-08-31 12:13:55,984 INFO L136 LiptonReduction]: Total number of compositions: 845 [2023-08-31 12:13:55,985 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:13:55,985 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:13:55,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:13:56,149 INFO L130 PetriNetUnfolder]: 0/554 cut-off events. [2023-08-31 12:13:56,149 INFO L131 PetriNetUnfolder]: For 85241/85241 co-relation queries the response was YES. [2023-08-31 12:13:56,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:13:56,149 INFO L208 CegarLoopForPetriNet]: trace histogram [79, 79, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:13:56,149 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:13:56,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:13:56,150 INFO L85 PathProgramCache]: Analyzing trace with hash -909872556, now seen corresponding path program 1 times [2023-08-31 12:13:56,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:13:56,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018518041] [2023-08-31 12:13:56,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:13:56,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:13:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:13:56,260 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:13:56,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:13:56,373 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:13:56,373 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:13:56,373 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:13:56,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2023-08-31 12:13:56,374 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:13:56,374 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:13:56,374 WARN L233 ceAbstractionStarter]: 79 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:13:56,374 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 80 thread instances. [2023-08-31 12:13:56,487 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:13:56,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1233 places, 1073 transitions, 8866 flow [2023-08-31 12:13:57,786 INFO L130 PetriNetUnfolder]: 81/2031 cut-off events. [2023-08-31 12:13:57,786 INFO L131 PetriNetUnfolder]: For 88480/88480 co-relation queries the response was YES. [2023-08-31 12:13:57,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5512 conditions, 2031 events. 81/2031 cut-off events. For 88480/88480 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4640 event pairs, 0 based on Foata normal form. 0/1708 useless extension candidates. Maximal degree in co-relation 5386. Up to 162 conditions per place. [2023-08-31 12:13:57,896 INFO L82 GeneralOperation]: Start removeDead. Operand has 1233 places, 1073 transitions, 8866 flow [2023-08-31 12:13:57,901 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1227 places, 1066 transitions, 8852 flow [2023-08-31 12:13:57,901 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:13:57,901 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1227 places, 1066 transitions, 8852 flow [2023-08-31 12:13:57,901 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1227 places, 1066 transitions, 8852 flow [2023-08-31 12:13:57,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1227 places, 1066 transitions, 8852 flow [2023-08-31 12:13:59,258 INFO L130 PetriNetUnfolder]: 0/1544 cut-off events. [2023-08-31 12:13:59,258 INFO L131 PetriNetUnfolder]: For 88480/88480 co-relation queries the response was YES. [2023-08-31 12:13:59,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5025 conditions, 1544 events. 0/1544 cut-off events. For 88480/88480 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2688 event pairs, 0 based on Foata normal form. 0/1384 useless extension candidates. Maximal degree in co-relation 0. Up to 81 conditions per place. [2023-08-31 12:13:59,843 INFO L119 LiptonReduction]: Number of co-enabled transitions 999360 [2023-08-31 12:14:12,038 INFO L134 LiptonReduction]: Checked pairs total: 1762232 [2023-08-31 12:14:12,038 INFO L136 LiptonReduction]: Total number of compositions: 853 [2023-08-31 12:14:12,039 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:14:12,039 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:14:12,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:14:12,269 INFO L130 PetriNetUnfolder]: 0/561 cut-off events. [2023-08-31 12:14:12,269 INFO L131 PetriNetUnfolder]: For 88480/88480 co-relation queries the response was YES. [2023-08-31 12:14:12,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:14:12,269 INFO L208 CegarLoopForPetriNet]: trace histogram [80, 80, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:14:12,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:14:12,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:14:12,270 INFO L85 PathProgramCache]: Analyzing trace with hash -406941548, now seen corresponding path program 1 times [2023-08-31 12:14:12,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:14:12,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335631223] [2023-08-31 12:14:12,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:14:12,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:14:12,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:14:12,377 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:14:12,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:14:12,499 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:14:12,499 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:14:12,499 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:14:12,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2023-08-31 12:14:12,499 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:14:12,499 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:14:12,499 WARN L233 ceAbstractionStarter]: 80 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:14:12,499 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 81 thread instances. [2023-08-31 12:14:12,611 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:14:12,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1248 places, 1086 transitions, 9057 flow [2023-08-31 12:14:14,078 INFO L130 PetriNetUnfolder]: 82/2056 cut-off events. [2023-08-31 12:14:14,078 INFO L131 PetriNetUnfolder]: For 91800/91800 co-relation queries the response was YES. [2023-08-31 12:14:14,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5621 conditions, 2056 events. 82/2056 cut-off events. For 91800/91800 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4669 event pairs, 0 based on Foata normal form. 0/1729 useless extension candidates. Maximal degree in co-relation 5494. Up to 164 conditions per place. [2023-08-31 12:14:14,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 1248 places, 1086 transitions, 9057 flow [2023-08-31 12:14:14,196 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1242 places, 1079 transitions, 9043 flow [2023-08-31 12:14:14,196 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:14:14,196 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1242 places, 1079 transitions, 9043 flow [2023-08-31 12:14:14,196 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1242 places, 1079 transitions, 9043 flow [2023-08-31 12:14:14,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1242 places, 1079 transitions, 9043 flow [2023-08-31 12:14:15,211 INFO L130 PetriNetUnfolder]: 0/1563 cut-off events. [2023-08-31 12:14:15,212 INFO L131 PetriNetUnfolder]: For 91800/91800 co-relation queries the response was YES. [2023-08-31 12:14:15,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5128 conditions, 1563 events. 0/1563 cut-off events. For 91800/91800 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2709 event pairs, 0 based on Foata normal form. 0/1401 useless extension candidates. Maximal degree in co-relation 0. Up to 82 conditions per place. [2023-08-31 12:14:15,598 INFO L119 LiptonReduction]: Number of co-enabled transitions 1024488 [2023-08-31 12:14:27,753 INFO L134 LiptonReduction]: Checked pairs total: 1822134 [2023-08-31 12:14:27,753 INFO L136 LiptonReduction]: Total number of compositions: 850 [2023-08-31 12:14:27,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:14:27,754 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:14:27,754 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:14:27,931 INFO L130 PetriNetUnfolder]: 0/568 cut-off events. [2023-08-31 12:14:27,932 INFO L131 PetriNetUnfolder]: For 91800/91800 co-relation queries the response was YES. [2023-08-31 12:14:27,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:14:27,932 INFO L208 CegarLoopForPetriNet]: trace histogram [81, 81, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:14:27,932 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:14:27,932 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:14:27,932 INFO L85 PathProgramCache]: Analyzing trace with hash -2136022754, now seen corresponding path program 1 times [2023-08-31 12:14:27,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:14:27,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076186442] [2023-08-31 12:14:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:14:27,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:14:28,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:14:28,084 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:14:28,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:14:28,221 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:14:28,221 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:14:28,221 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:14:28,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2023-08-31 12:14:28,222 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:14:28,222 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:14:28,222 WARN L233 ceAbstractionStarter]: 81 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:14:28,222 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 82 thread instances. [2023-08-31 12:14:28,338 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:14:28,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1263 places, 1099 transitions, 9250 flow [2023-08-31 12:14:29,840 INFO L130 PetriNetUnfolder]: 83/2081 cut-off events. [2023-08-31 12:14:29,840 INFO L131 PetriNetUnfolder]: For 95202/95202 co-relation queries the response was YES. [2023-08-31 12:14:29,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5731 conditions, 2081 events. 83/2081 cut-off events. For 95202/95202 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4725 event pairs, 0 based on Foata normal form. 0/1750 useless extension candidates. Maximal degree in co-relation 5603. Up to 166 conditions per place. [2023-08-31 12:14:29,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 1263 places, 1099 transitions, 9250 flow [2023-08-31 12:14:29,957 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1257 places, 1092 transitions, 9236 flow [2023-08-31 12:14:29,958 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:14:29,958 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1257 places, 1092 transitions, 9236 flow [2023-08-31 12:14:29,958 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1257 places, 1092 transitions, 9236 flow [2023-08-31 12:14:29,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1257 places, 1092 transitions, 9236 flow [2023-08-31 12:14:31,008 INFO L130 PetriNetUnfolder]: 0/1582 cut-off events. [2023-08-31 12:14:31,008 INFO L131 PetriNetUnfolder]: For 95202/95202 co-relation queries the response was YES. [2023-08-31 12:14:31,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5232 conditions, 1582 events. 0/1582 cut-off events. For 95202/95202 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2721 event pairs, 0 based on Foata normal form. 0/1418 useless extension candidates. Maximal degree in co-relation 0. Up to 83 conditions per place. [2023-08-31 12:14:31,415 INFO L119 LiptonReduction]: Number of co-enabled transitions 1049928 [2023-08-31 12:14:43,620 INFO L134 LiptonReduction]: Checked pairs total: 1745814 [2023-08-31 12:14:43,621 INFO L136 LiptonReduction]: Total number of compositions: 863 [2023-08-31 12:14:43,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:14:43,621 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:14:43,622 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:14:43,797 INFO L130 PetriNetUnfolder]: 0/575 cut-off events. [2023-08-31 12:14:43,798 INFO L131 PetriNetUnfolder]: For 95202/95202 co-relation queries the response was YES. [2023-08-31 12:14:43,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:14:43,798 INFO L208 CegarLoopForPetriNet]: trace histogram [82, 82, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:14:43,798 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:14:43,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:14:43,798 INFO L85 PathProgramCache]: Analyzing trace with hash 797072135, now seen corresponding path program 1 times [2023-08-31 12:14:43,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:14:43,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934165579] [2023-08-31 12:14:43,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:14:43,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:14:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:14:43,909 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:14:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:14:44,046 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:14:44,046 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:14:44,046 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:14:44,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2023-08-31 12:14:44,046 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:14:44,046 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:14:44,046 WARN L233 ceAbstractionStarter]: 82 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:14:44,046 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 83 thread instances. [2023-08-31 12:14:44,165 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:14:44,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1278 places, 1112 transitions, 9445 flow [2023-08-31 12:14:45,614 INFO L130 PetriNetUnfolder]: 84/2106 cut-off events. [2023-08-31 12:14:45,614 INFO L131 PetriNetUnfolder]: For 98687/98687 co-relation queries the response was YES. [2023-08-31 12:14:45,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5842 conditions, 2106 events. 84/2106 cut-off events. For 98687/98687 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4772 event pairs, 0 based on Foata normal form. 0/1771 useless extension candidates. Maximal degree in co-relation 5713. Up to 168 conditions per place. [2023-08-31 12:14:45,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 1278 places, 1112 transitions, 9445 flow [2023-08-31 12:14:45,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1272 places, 1105 transitions, 9431 flow [2023-08-31 12:14:45,744 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:14:45,744 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1272 places, 1105 transitions, 9431 flow [2023-08-31 12:14:45,744 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1272 places, 1105 transitions, 9431 flow [2023-08-31 12:14:45,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1272 places, 1105 transitions, 9431 flow [2023-08-31 12:14:46,859 INFO L130 PetriNetUnfolder]: 0/1601 cut-off events. [2023-08-31 12:14:46,859 INFO L131 PetriNetUnfolder]: For 98687/98687 co-relation queries the response was YES. [2023-08-31 12:14:46,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5337 conditions, 1601 events. 0/1601 cut-off events. For 98687/98687 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2757 event pairs, 0 based on Foata normal form. 0/1435 useless extension candidates. Maximal degree in co-relation 0. Up to 84 conditions per place. [2023-08-31 12:14:47,287 INFO L119 LiptonReduction]: Number of co-enabled transitions 1075680 [2023-08-31 12:14:59,696 INFO L134 LiptonReduction]: Checked pairs total: 1865065 [2023-08-31 12:14:59,696 INFO L136 LiptonReduction]: Total number of compositions: 893 [2023-08-31 12:14:59,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:14:59,697 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:14:59,697 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:14:59,880 INFO L130 PetriNetUnfolder]: 0/582 cut-off events. [2023-08-31 12:14:59,880 INFO L131 PetriNetUnfolder]: For 98687/98687 co-relation queries the response was YES. [2023-08-31 12:14:59,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:14:59,880 INFO L208 CegarLoopForPetriNet]: trace histogram [83, 83, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:14:59,880 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:14:59,880 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:14:59,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2127307461, now seen corresponding path program 1 times [2023-08-31 12:14:59,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:14:59,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845089350] [2023-08-31 12:14:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:14:59,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:14:59,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:14:59,995 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:15:00,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:15:00,126 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:15:00,126 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:15:00,126 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:15:00,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2023-08-31 12:15:00,127 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:15:00,127 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:15:00,127 WARN L233 ceAbstractionStarter]: 83 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:15:00,127 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 84 thread instances. [2023-08-31 12:15:00,246 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:15:00,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1293 places, 1125 transitions, 9642 flow [2023-08-31 12:15:01,634 INFO L130 PetriNetUnfolder]: 85/2131 cut-off events. [2023-08-31 12:15:01,634 INFO L131 PetriNetUnfolder]: For 102256/102256 co-relation queries the response was YES. [2023-08-31 12:15:01,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5954 conditions, 2131 events. 85/2131 cut-off events. For 102256/102256 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4840 event pairs, 0 based on Foata normal form. 0/1792 useless extension candidates. Maximal degree in co-relation 5824. Up to 170 conditions per place. [2023-08-31 12:15:01,768 INFO L82 GeneralOperation]: Start removeDead. Operand has 1293 places, 1125 transitions, 9642 flow [2023-08-31 12:15:01,772 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1287 places, 1118 transitions, 9628 flow [2023-08-31 12:15:01,772 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:15:01,772 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1287 places, 1118 transitions, 9628 flow [2023-08-31 12:15:01,772 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1287 places, 1118 transitions, 9628 flow [2023-08-31 12:15:01,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1287 places, 1118 transitions, 9628 flow [2023-08-31 12:15:03,084 INFO L130 PetriNetUnfolder]: 0/1620 cut-off events. [2023-08-31 12:15:03,085 INFO L131 PetriNetUnfolder]: For 102256/102256 co-relation queries the response was YES. [2023-08-31 12:15:03,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5443 conditions, 1620 events. 0/1620 cut-off events. For 102256/102256 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2808 event pairs, 0 based on Foata normal form. 0/1452 useless extension candidates. Maximal degree in co-relation 0. Up to 85 conditions per place. [2023-08-31 12:15:03,529 INFO L119 LiptonReduction]: Number of co-enabled transitions 1101744 [2023-08-31 12:15:15,979 INFO L134 LiptonReduction]: Checked pairs total: 1978799 [2023-08-31 12:15:15,979 INFO L136 LiptonReduction]: Total number of compositions: 877 [2023-08-31 12:15:15,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:15:15,980 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:15:15,980 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:15:16,219 INFO L130 PetriNetUnfolder]: 0/589 cut-off events. [2023-08-31 12:15:16,219 INFO L131 PetriNetUnfolder]: For 102256/102256 co-relation queries the response was YES. [2023-08-31 12:15:16,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:15:16,219 INFO L208 CegarLoopForPetriNet]: trace histogram [84, 84, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:15:16,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:15:16,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:15:16,220 INFO L85 PathProgramCache]: Analyzing trace with hash 528380886, now seen corresponding path program 1 times [2023-08-31 12:15:16,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:15:16,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705025047] [2023-08-31 12:15:16,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:15:16,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:15:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:15:16,346 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:15:16,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:15:16,500 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:15:16,500 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:15:16,500 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:15:16,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2023-08-31 12:15:16,501 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:15:16,501 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:15:16,501 WARN L233 ceAbstractionStarter]: 84 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:15:16,501 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 85 thread instances. [2023-08-31 12:15:16,621 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:15:16,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1308 places, 1138 transitions, 9841 flow [2023-08-31 12:15:18,309 INFO L130 PetriNetUnfolder]: 86/2156 cut-off events. [2023-08-31 12:15:18,309 INFO L131 PetriNetUnfolder]: For 105910/105910 co-relation queries the response was YES. [2023-08-31 12:15:18,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6067 conditions, 2156 events. 86/2156 cut-off events. For 105910/105910 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 4902 event pairs, 0 based on Foata normal form. 0/1813 useless extension candidates. Maximal degree in co-relation 5936. Up to 172 conditions per place. [2023-08-31 12:15:18,437 INFO L82 GeneralOperation]: Start removeDead. Operand has 1308 places, 1138 transitions, 9841 flow [2023-08-31 12:15:18,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1302 places, 1131 transitions, 9827 flow [2023-08-31 12:15:18,441 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:15:18,441 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1302 places, 1131 transitions, 9827 flow [2023-08-31 12:15:18,442 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1302 places, 1131 transitions, 9827 flow [2023-08-31 12:15:18,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1302 places, 1131 transitions, 9827 flow [2023-08-31 12:15:19,580 INFO L130 PetriNetUnfolder]: 0/1639 cut-off events. [2023-08-31 12:15:19,580 INFO L131 PetriNetUnfolder]: For 105910/105910 co-relation queries the response was YES. [2023-08-31 12:15:19,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5550 conditions, 1639 events. 0/1639 cut-off events. For 105910/105910 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 2823 event pairs, 0 based on Foata normal form. 0/1469 useless extension candidates. Maximal degree in co-relation 0. Up to 86 conditions per place. [2023-08-31 12:15:20,012 INFO L119 LiptonReduction]: Number of co-enabled transitions 1128120 [2023-08-31 12:15:32,923 INFO L134 LiptonReduction]: Checked pairs total: 1977015 [2023-08-31 12:15:32,924 INFO L136 LiptonReduction]: Total number of compositions: 907 [2023-08-31 12:15:32,924 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:15:32,924 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;@1119b939, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:15:32,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:15:33,158 INFO L130 PetriNetUnfolder]: 0/596 cut-off events. [2023-08-31 12:15:33,158 INFO L131 PetriNetUnfolder]: For 105910/105910 co-relation queries the response was YES. [2023-08-31 12:15:33,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:15:33,158 INFO L208 CegarLoopForPetriNet]: trace histogram [85, 85, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:15:33,159 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:15:33,159 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:15:33,159 INFO L85 PathProgramCache]: Analyzing trace with hash -238741475, now seen corresponding path program 1 times [2023-08-31 12:15:33,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:15:33,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669287390] [2023-08-31 12:15:33,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:15:33,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:15:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:15:33,277 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:15:33,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:15:33,412 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:15:33,413 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:15:33,413 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:15:33,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2023-08-31 12:15:33,413 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:15:33,413 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:15:33,413 WARN L233 ceAbstractionStarter]: 85 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:15:33,413 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 86 thread instances. Killed by 15