./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 04:57:34,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 04:57:34,567 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 04:57:34,605 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 04:57:34,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 04:57:34,610 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 04:57:34,612 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 04:57:34,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 04:57:34,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 04:57:34,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 04:57:34,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 04:57:34,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 04:57:34,624 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 04:57:34,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 04:57:34,627 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 04:57:34,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 04:57:34,632 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 04:57:34,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 04:57:34,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 04:57:34,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 04:57:34,649 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 04:57:34,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 04:57:34,651 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 04:57:34,652 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 04:57:34,658 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 04:57:34,658 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 04:57:34,658 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 04:57:34,660 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 04:57:34,661 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 04:57:34,662 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 04:57:34,662 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 04:57:34,667 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 04:57:34,668 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 04:57:34,669 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 04:57:34,670 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 04:57:34,671 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 04:57:34,671 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 04:57:34,671 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 04:57:34,672 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 04:57:34,672 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 04:57:34,673 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 04:57:34,675 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 04:57:34,709 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 04:57:34,709 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 04:57:34,710 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 04:57:34,710 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 04:57:34,711 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 04:57:34,711 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 04:57:34,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 04:57:34,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 04:57:34,712 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 04:57:34,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 04:57:34,713 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 04:57:34,713 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 04:57:34,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 04:57:34,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 04:57:34,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 04:57:34,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 04:57:34,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 04:57:34,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 04:57:34,715 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 04:57:34,715 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 04:57:34,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 04:57:34,715 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 04:57:34,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 04:57:34,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 04:57:34,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 04:57:34,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 04:57:34,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:57:34,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 04:57:34,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 04:57:34,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 04:57:34,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 04:57:34,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 04:57:34,718 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 04:57:34,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 04:57:34,718 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 04:57:34,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 04:57:34,719 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 04:57:34,719 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 963498115a8eca6e92c68ab7fa8168826446f05b9b398350c3ee0745adf1bb45 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 04:57:35,041 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 04:57:35,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 04:57:35,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 04:57:35,080 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 04:57:35,080 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 04:57:35,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i [2023-09-01 04:57:36,371 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 04:57:36,640 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 04:57:36,641 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/11_fmaxsymopt.i [2023-09-01 04:57:36,654 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/269bfd41f/1634487a8e4340a0a53fd4926ff2dfd1/FLAGc75b3e6a8 [2023-09-01 04:57:36,667 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/269bfd41f/1634487a8e4340a0a53fd4926ff2dfd1 [2023-09-01 04:57:36,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 04:57:36,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 04:57:36,672 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 04:57:36,672 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 04:57:36,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 04:57:36,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:57:36" (1/1) ... [2023-09-01 04:57:36,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@945dff6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:36, skipping insertion in model container [2023-09-01 04:57:36,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 04:57:36" (1/1) ... [2023-09-01 04:57:36,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 04:57:36,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 04:57:37,031 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/11_fmaxsymopt.i[30540,30553] [2023-09-01 04:57:37,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:57:37,050 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 04:57:37,105 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/11_fmaxsymopt.i[30540,30553] [2023-09-01 04:57:37,117 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 04:57:37,159 INFO L208 MainTranslator]: Completed translation [2023-09-01 04:57:37,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:37 WrapperNode [2023-09-01 04:57:37,160 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 04:57:37,161 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 04:57:37,161 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 04:57:37,161 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 04:57:37,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:37" (1/1) ... [2023-09-01 04:57:37,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:37" (1/1) ... [2023-09-01 04:57:37,224 INFO L138 Inliner]: procedures = 171, calls = 24, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 87 [2023-09-01 04:57:37,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 04:57:37,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 04:57:37,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 04:57:37,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 04:57:37,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:37" (1/1) ... [2023-09-01 04:57:37,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:37" (1/1) ... [2023-09-01 04:57:37,240 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:37" (1/1) ... [2023-09-01 04:57:37,241 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:37" (1/1) ... [2023-09-01 04:57:37,257 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:37" (1/1) ... [2023-09-01 04:57:37,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:37" (1/1) ... [2023-09-01 04:57:37,266 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:37" (1/1) ... [2023-09-01 04:57:37,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:37" (1/1) ... [2023-09-01 04:57:37,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 04:57:37,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 04:57:37,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 04:57:37,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 04:57:37,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:37" (1/1) ... [2023-09-01 04:57:37,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 04:57:37,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 04:57:37,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 04:57:37,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 04:57:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 04:57:37,343 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-09-01 04:57:37,345 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-09-01 04:57:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 04:57:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 04:57:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 04:57:37,345 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 04:57:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 04:57:37,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 04:57:37,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 04:57:37,347 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 04:57:37,485 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 04:57:37,487 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 04:57:37,661 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 04:57:37,701 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 04:57:37,703 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-09-01 04:57:37,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:57:37 BoogieIcfgContainer [2023-09-01 04:57:37,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 04:57:37,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 04:57:37,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 04:57:37,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 04:57:37,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 04:57:36" (1/3) ... [2023-09-01 04:57:37,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115fe646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:57:37, skipping insertion in model container [2023-09-01 04:57:37,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 04:57:37" (2/3) ... [2023-09-01 04:57:37,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@115fe646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 04:57:37, skipping insertion in model container [2023-09-01 04:57:37,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 04:57:37" (3/3) ... [2023-09-01 04:57:37,722 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt.i [2023-09-01 04:57:37,728 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 04:57:37,734 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 04:57:37,734 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-09-01 04:57:37,735 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 04:57:37,798 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:57:37,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 85 transitions, 175 flow [2023-09-01 04:57:37,863 INFO L130 PetriNetUnfolder]: 9/95 cut-off events. [2023-09-01 04:57:37,864 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:57:37,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 95 events. 9/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2023-09-01 04:57:37,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 80 places, 85 transitions, 175 flow [2023-09-01 04:57:37,873 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 80 places, 85 transitions, 175 flow [2023-09-01 04:57:37,876 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:57:37,884 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 80 places, 85 transitions, 175 flow [2023-09-01 04:57:37,887 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 80 places, 85 transitions, 175 flow [2023-09-01 04:57:37,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 80 places, 85 transitions, 175 flow [2023-09-01 04:57:37,909 INFO L130 PetriNetUnfolder]: 9/95 cut-off events. [2023-09-01 04:57:37,909 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:57:37,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100 conditions, 95 events. 9/95 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 91 event pairs, 0 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 63. Up to 4 conditions per place. [2023-09-01 04:57:37,912 INFO L119 LiptonReduction]: Number of co-enabled transitions 1326 [2023-09-01 04:57:40,987 INFO L134 LiptonReduction]: Checked pairs total: 1282 [2023-09-01 04:57:40,987 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-09-01 04:57:41,002 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 04:57:41,008 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:57:41,008 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 04:57:41,013 INFO L130 PetriNetUnfolder]: 1/14 cut-off events. [2023-09-01 04:57:41,013 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 04:57:41,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:41,014 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 04:57:41,015 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 04:57:41,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:41,019 INFO L85 PathProgramCache]: Analyzing trace with hash -576249632, now seen corresponding path program 1 times [2023-09-01 04:57:41,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:41,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661491918] [2023-09-01 04:57:41,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:41,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:41,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:57:41,149 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 04:57:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:57:41,220 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 04:57:41,222 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 04:57:41,223 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 04:57:41,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 04:57:41,225 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 04:57:41,230 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 04:57:41,231 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 04:57:41,231 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 04:57:41,258 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:57:41,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 137 transitions, 286 flow [2023-09-01 04:57:41,308 INFO L130 PetriNetUnfolder]: 17/159 cut-off events. [2023-09-01 04:57:41,308 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:57:41,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 159 events. 17/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 290 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 114. Up to 6 conditions per place. [2023-09-01 04:57:41,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 137 transitions, 286 flow [2023-09-01 04:57:41,318 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 137 transitions, 286 flow [2023-09-01 04:57:41,318 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:57:41,318 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 137 transitions, 286 flow [2023-09-01 04:57:41,318 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 137 transitions, 286 flow [2023-09-01 04:57:41,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 137 transitions, 286 flow [2023-09-01 04:57:41,342 INFO L130 PetriNetUnfolder]: 17/159 cut-off events. [2023-09-01 04:57:41,342 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:57:41,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169 conditions, 159 events. 17/159 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 290 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 114. Up to 6 conditions per place. [2023-09-01 04:57:41,347 INFO L119 LiptonReduction]: Number of co-enabled transitions 7956 [2023-09-01 04:57:44,714 INFO L134 LiptonReduction]: Checked pairs total: 11979 [2023-09-01 04:57:44,715 INFO L136 LiptonReduction]: Total number of compositions: 148 [2023-09-01 04:57:44,717 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 04:57:44,718 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:57:44,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 04:57:44,723 INFO L130 PetriNetUnfolder]: 5/37 cut-off events. [2023-09-01 04:57:44,723 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 04:57:44,723 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:44,723 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 04:57:44,724 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 04:57:44,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:44,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1415821127, now seen corresponding path program 1 times [2023-09-01 04:57:44,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:44,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452123455] [2023-09-01 04:57:44,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:44,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:57:44,744 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 04:57:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:57:44,762 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 04:57:44,762 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 04:57:44,763 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 04:57:44,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 04:57:44,763 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 04:57:44,764 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 04:57:44,764 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 04:57:44,764 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 04:57:44,800 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:57:44,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 189 transitions, 399 flow [2023-09-01 04:57:44,836 INFO L130 PetriNetUnfolder]: 25/223 cut-off events. [2023-09-01 04:57:44,836 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 04:57:44,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 223 events. 25/223 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 570 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 165. Up to 8 conditions per place. [2023-09-01 04:57:44,840 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 189 transitions, 399 flow [2023-09-01 04:57:44,842 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 189 transitions, 399 flow [2023-09-01 04:57:44,842 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:57:44,843 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 189 transitions, 399 flow [2023-09-01 04:57:44,843 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 189 transitions, 399 flow [2023-09-01 04:57:44,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 189 transitions, 399 flow [2023-09-01 04:57:44,867 INFO L130 PetriNetUnfolder]: 25/223 cut-off events. [2023-09-01 04:57:44,867 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 04:57:44,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239 conditions, 223 events. 25/223 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 570 event pairs, 0 based on Foata normal form. 0/182 useless extension candidates. Maximal degree in co-relation 165. Up to 8 conditions per place. [2023-09-01 04:57:44,879 INFO L119 LiptonReduction]: Number of co-enabled transitions 19890 [2023-09-01 04:57:49,192 INFO L134 LiptonReduction]: Checked pairs total: 30085 [2023-09-01 04:57:49,192 INFO L136 LiptonReduction]: Total number of compositions: 214 [2023-09-01 04:57:49,194 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 04:57:49,194 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:57:49,195 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 04:57:49,207 INFO L130 PetriNetUnfolder]: 8/55 cut-off events. [2023-09-01 04:57:49,209 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 04:57:49,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:49,210 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 04:57:49,210 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 04:57:49,210 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:49,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1543776136, now seen corresponding path program 1 times [2023-09-01 04:57:49,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:49,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218687521] [2023-09-01 04:57:49,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:49,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:57:49,250 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 04:57:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:57:49,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 04:57:49,274 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 04:57:49,274 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 04:57:49,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 04:57:49,274 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 04:57:49,275 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 04:57:49,275 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 04:57:49,275 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 04:57:49,316 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:57:49,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 241 transitions, 514 flow [2023-09-01 04:57:49,357 INFO L130 PetriNetUnfolder]: 33/287 cut-off events. [2023-09-01 04:57:49,358 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 04:57:49,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 287 events. 33/287 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 858 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 231. Up to 10 conditions per place. [2023-09-01 04:57:49,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 221 places, 241 transitions, 514 flow [2023-09-01 04:57:49,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 221 places, 241 transitions, 514 flow [2023-09-01 04:57:49,367 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:57:49,367 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 241 transitions, 514 flow [2023-09-01 04:57:49,367 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 241 transitions, 514 flow [2023-09-01 04:57:49,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 241 transitions, 514 flow [2023-09-01 04:57:49,412 INFO L130 PetriNetUnfolder]: 33/287 cut-off events. [2023-09-01 04:57:49,413 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 04:57:49,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 287 events. 33/287 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 858 event pairs, 0 based on Foata normal form. 0/233 useless extension candidates. Maximal degree in co-relation 231. Up to 10 conditions per place. [2023-09-01 04:57:49,428 INFO L119 LiptonReduction]: Number of co-enabled transitions 37128 [2023-09-01 04:57:54,735 INFO L134 LiptonReduction]: Checked pairs total: 56574 [2023-09-01 04:57:54,735 INFO L136 LiptonReduction]: Total number of compositions: 275 [2023-09-01 04:57:54,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 04:57:54,738 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:57:54,738 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 04:57:54,745 INFO L130 PetriNetUnfolder]: 11/73 cut-off events. [2023-09-01 04:57:54,745 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 04:57:54,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:57:54,745 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 04:57:54,746 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 04:57:54,746 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:57:54,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1248217585, now seen corresponding path program 1 times [2023-09-01 04:57:54,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:57:54,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723293528] [2023-09-01 04:57:54,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:57:54,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:57:54,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:57:54,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 04:57:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:57:54,816 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 04:57:54,819 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 04:57:54,821 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 04:57:54,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 04:57:54,821 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 04:57:54,822 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 04:57:54,822 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 04:57:54,822 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 04:57:54,856 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:57:54,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 293 transitions, 631 flow [2023-09-01 04:57:54,913 INFO L130 PetriNetUnfolder]: 41/351 cut-off events. [2023-09-01 04:57:54,913 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 04:57:54,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 351 events. 41/351 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1137 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 300. Up to 12 conditions per place. [2023-09-01 04:57:54,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 268 places, 293 transitions, 631 flow [2023-09-01 04:57:54,921 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 268 places, 293 transitions, 631 flow [2023-09-01 04:57:54,922 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:57:54,922 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 268 places, 293 transitions, 631 flow [2023-09-01 04:57:54,922 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 268 places, 293 transitions, 631 flow [2023-09-01 04:57:54,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 268 places, 293 transitions, 631 flow [2023-09-01 04:57:54,987 INFO L130 PetriNetUnfolder]: 41/351 cut-off events. [2023-09-01 04:57:54,987 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 04:57:54,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 351 events. 41/351 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1137 event pairs, 0 based on Foata normal form. 0/284 useless extension candidates. Maximal degree in co-relation 300. Up to 12 conditions per place. [2023-09-01 04:57:55,003 INFO L119 LiptonReduction]: Number of co-enabled transitions 59670 [2023-09-01 04:58:00,790 INFO L134 LiptonReduction]: Checked pairs total: 85613 [2023-09-01 04:58:00,791 INFO L136 LiptonReduction]: Total number of compositions: 320 [2023-09-01 04:58:00,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 04:58:00,793 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:58:00,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 04:58:00,803 INFO L130 PetriNetUnfolder]: 14/91 cut-off events. [2023-09-01 04:58:00,803 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 04:58:00,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:58:00,804 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:58:00,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 04:58:00,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:58:00,804 INFO L85 PathProgramCache]: Analyzing trace with hash 650278541, now seen corresponding path program 1 times [2023-09-01 04:58:00,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:58:00,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11003376] [2023-09-01 04:58:00,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:58:00,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:58:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:58:00,845 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 04:58:00,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:58:00,879 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 04:58:00,884 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 04:58:00,884 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 04:58:00,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 04:58:00,885 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 04:58:00,886 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 04:58:00,888 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 04:58:00,888 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 04:58:00,923 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:58:00,926 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 345 transitions, 750 flow [2023-09-01 04:58:01,034 INFO L130 PetriNetUnfolder]: 49/415 cut-off events. [2023-09-01 04:58:01,034 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 04:58:01,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 415 events. 49/415 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1435 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 370. Up to 14 conditions per place. [2023-09-01 04:58:01,040 INFO L82 GeneralOperation]: Start removeDead. Operand has 315 places, 345 transitions, 750 flow [2023-09-01 04:58:01,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 315 places, 345 transitions, 750 flow [2023-09-01 04:58:01,045 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:58:01,045 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 315 places, 345 transitions, 750 flow [2023-09-01 04:58:01,045 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 315 places, 345 transitions, 750 flow [2023-09-01 04:58:01,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 315 places, 345 transitions, 750 flow [2023-09-01 04:58:01,122 INFO L130 PetriNetUnfolder]: 49/415 cut-off events. [2023-09-01 04:58:01,122 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 04:58:01,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 455 conditions, 415 events. 49/415 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1435 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 370. Up to 14 conditions per place. [2023-09-01 04:58:01,149 INFO L119 LiptonReduction]: Number of co-enabled transitions 87516 [2023-09-01 04:58:07,788 INFO L134 LiptonReduction]: Checked pairs total: 131197 [2023-09-01 04:58:07,789 INFO L136 LiptonReduction]: Total number of compositions: 382 [2023-09-01 04:58:07,790 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 04:58:07,791 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:58:07,791 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 04:58:07,801 INFO L130 PetriNetUnfolder]: 17/109 cut-off events. [2023-09-01 04:58:07,801 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 04:58:07,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:58:07,801 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:58:07,801 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 04:58:07,802 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:58:07,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1956891053, now seen corresponding path program 1 times [2023-09-01 04:58:07,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:58:07,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936341087] [2023-09-01 04:58:07,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:58:07,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:58:07,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:58:07,839 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 04:58:07,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:58:07,866 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 04:58:07,866 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 04:58:07,867 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 04:58:07,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 04:58:07,867 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 04:58:07,867 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 04:58:07,868 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 04:58:07,868 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 04:58:07,900 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:58:07,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 397 transitions, 871 flow [2023-09-01 04:58:08,007 INFO L130 PetriNetUnfolder]: 57/479 cut-off events. [2023-09-01 04:58:08,009 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 04:58:08,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 479 events. 57/479 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1722 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 441. Up to 16 conditions per place. [2023-09-01 04:58:08,014 INFO L82 GeneralOperation]: Start removeDead. Operand has 362 places, 397 transitions, 871 flow [2023-09-01 04:58:08,020 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 362 places, 397 transitions, 871 flow [2023-09-01 04:58:08,020 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:58:08,020 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 362 places, 397 transitions, 871 flow [2023-09-01 04:58:08,020 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 362 places, 397 transitions, 871 flow [2023-09-01 04:58:08,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 362 places, 397 transitions, 871 flow [2023-09-01 04:58:08,096 INFO L130 PetriNetUnfolder]: 57/479 cut-off events. [2023-09-01 04:58:08,097 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 04:58:08,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 529 conditions, 479 events. 57/479 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1722 event pairs, 0 based on Foata normal form. 0/386 useless extension candidates. Maximal degree in co-relation 441. Up to 16 conditions per place. [2023-09-01 04:58:08,127 INFO L119 LiptonReduction]: Number of co-enabled transitions 120666 [2023-09-01 04:58:15,994 INFO L134 LiptonReduction]: Checked pairs total: 179657 [2023-09-01 04:58:15,994 INFO L136 LiptonReduction]: Total number of compositions: 443 [2023-09-01 04:58:15,995 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 04:58:15,995 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:58:15,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 04:58:16,007 INFO L130 PetriNetUnfolder]: 20/127 cut-off events. [2023-09-01 04:58:16,008 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 04:58:16,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:58:16,008 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:58:16,008 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 04:58:16,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:58:16,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1728049160, now seen corresponding path program 1 times [2023-09-01 04:58:16,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:58:16,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554892304] [2023-09-01 04:58:16,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:58:16,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:58:16,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:58:16,026 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 04:58:16,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:58:16,042 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 04:58:16,042 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 04:58:16,042 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 04:58:16,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 04:58:16,043 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 04:58:16,043 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 04:58:16,043 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 04:58:16,043 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 04:58:16,079 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:58:16,095 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 449 transitions, 994 flow [2023-09-01 04:58:16,189 INFO L130 PetriNetUnfolder]: 65/543 cut-off events. [2023-09-01 04:58:16,189 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 04:58:16,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 543 events. 65/543 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1989 event pairs, 0 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 513. Up to 18 conditions per place. [2023-09-01 04:58:16,198 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 449 transitions, 994 flow [2023-09-01 04:58:16,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 409 places, 449 transitions, 994 flow [2023-09-01 04:58:16,205 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:58:16,206 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 409 places, 449 transitions, 994 flow [2023-09-01 04:58:16,206 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 409 places, 449 transitions, 994 flow [2023-09-01 04:58:16,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 449 transitions, 994 flow [2023-09-01 04:58:16,332 INFO L130 PetriNetUnfolder]: 65/543 cut-off events. [2023-09-01 04:58:16,332 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 04:58:16,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 604 conditions, 543 events. 65/543 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1989 event pairs, 0 based on Foata normal form. 0/437 useless extension candidates. Maximal degree in co-relation 513. Up to 18 conditions per place. [2023-09-01 04:58:16,372 INFO L119 LiptonReduction]: Number of co-enabled transitions 159120 [2023-09-01 04:58:25,545 INFO L134 LiptonReduction]: Checked pairs total: 252313 [2023-09-01 04:58:25,545 INFO L136 LiptonReduction]: Total number of compositions: 520 [2023-09-01 04:58:25,547 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 04:58:25,547 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:58:25,547 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 04:58:25,561 INFO L130 PetriNetUnfolder]: 23/145 cut-off events. [2023-09-01 04:58:25,561 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 04:58:25,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:58:25,562 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:58:25,562 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 04:58:25,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:58:25,562 INFO L85 PathProgramCache]: Analyzing trace with hash 510044140, now seen corresponding path program 1 times [2023-09-01 04:58:25,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:58:25,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290409718] [2023-09-01 04:58:25,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:58:25,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:58:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:58:25,594 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 04:58:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:58:25,629 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 04:58:25,629 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 04:58:25,629 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 04:58:25,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 04:58:25,630 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 04:58:25,633 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 04:58:25,633 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 04:58:25,634 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 04:58:25,678 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:58:25,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 456 places, 501 transitions, 1119 flow [2023-09-01 04:58:25,827 INFO L130 PetriNetUnfolder]: 73/607 cut-off events. [2023-09-01 04:58:25,827 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 04:58:25,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 607 events. 73/607 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2297 event pairs, 0 based on Foata normal form. 0/488 useless extension candidates. Maximal degree in co-relation 586. Up to 20 conditions per place. [2023-09-01 04:58:25,836 INFO L82 GeneralOperation]: Start removeDead. Operand has 456 places, 501 transitions, 1119 flow [2023-09-01 04:58:25,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 456 places, 501 transitions, 1119 flow [2023-09-01 04:58:25,845 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:58:25,845 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 456 places, 501 transitions, 1119 flow [2023-09-01 04:58:25,845 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 456 places, 501 transitions, 1119 flow [2023-09-01 04:58:25,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 456 places, 501 transitions, 1119 flow [2023-09-01 04:58:25,965 INFO L130 PetriNetUnfolder]: 73/607 cut-off events. [2023-09-01 04:58:25,965 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 04:58:25,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 680 conditions, 607 events. 73/607 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2297 event pairs, 0 based on Foata normal form. 0/488 useless extension candidates. Maximal degree in co-relation 586. Up to 20 conditions per place. [2023-09-01 04:58:26,058 INFO L119 LiptonReduction]: Number of co-enabled transitions 202878 [2023-09-01 04:58:36,130 INFO L134 LiptonReduction]: Checked pairs total: 318189 [2023-09-01 04:58:36,131 INFO L136 LiptonReduction]: Total number of compositions: 579 [2023-09-01 04:58:36,134 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 04:58:36,136 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:58:36,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 04:58:36,152 INFO L130 PetriNetUnfolder]: 26/163 cut-off events. [2023-09-01 04:58:36,152 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 04:58:36,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:58:36,152 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:58:36,153 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 04:58:36,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:58:36,153 INFO L85 PathProgramCache]: Analyzing trace with hash -221842257, now seen corresponding path program 1 times [2023-09-01 04:58:36,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:58:36,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936052524] [2023-09-01 04:58:36,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:58:36,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:58:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:58:36,179 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 04:58:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:58:36,195 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 04:58:36,195 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 04:58:36,195 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 04:58:36,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 04:58:36,196 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 04:58:36,196 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 04:58:36,196 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 04:58:36,197 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 04:58:36,243 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:58:36,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 503 places, 553 transitions, 1246 flow [2023-09-01 04:58:36,400 INFO L130 PetriNetUnfolder]: 81/671 cut-off events. [2023-09-01 04:58:36,400 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 04:58:36,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 671 events. 81/671 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2577 event pairs, 0 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 662. Up to 22 conditions per place. [2023-09-01 04:58:36,412 INFO L82 GeneralOperation]: Start removeDead. Operand has 503 places, 553 transitions, 1246 flow [2023-09-01 04:58:36,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 503 places, 553 transitions, 1246 flow [2023-09-01 04:58:36,419 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:58:36,420 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 503 places, 553 transitions, 1246 flow [2023-09-01 04:58:36,420 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 503 places, 553 transitions, 1246 flow [2023-09-01 04:58:36,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 503 places, 553 transitions, 1246 flow [2023-09-01 04:58:36,602 INFO L130 PetriNetUnfolder]: 81/671 cut-off events. [2023-09-01 04:58:36,603 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 04:58:36,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757 conditions, 671 events. 81/671 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 2577 event pairs, 0 based on Foata normal form. 0/539 useless extension candidates. Maximal degree in co-relation 662. Up to 22 conditions per place. [2023-09-01 04:58:36,660 INFO L119 LiptonReduction]: Number of co-enabled transitions 251940 [2023-09-01 04:58:47,587 INFO L134 LiptonReduction]: Checked pairs total: 390107 [2023-09-01 04:58:47,587 INFO L136 LiptonReduction]: Total number of compositions: 625 [2023-09-01 04:58:47,589 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 04:58:47,590 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:58:47,590 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 04:58:47,623 INFO L130 PetriNetUnfolder]: 29/181 cut-off events. [2023-09-01 04:58:47,623 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 04:58:47,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:58:47,623 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:58:47,623 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 04:58:47,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:58:47,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1448772452, now seen corresponding path program 1 times [2023-09-01 04:58:47,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:58:47,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115806802] [2023-09-01 04:58:47,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:58:47,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:58:47,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:58:47,656 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 04:58:47,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:58:47,684 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 04:58:47,684 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 04:58:47,685 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 04:58:47,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 04:58:47,685 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 04:58:47,685 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 04:58:47,686 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 04:58:47,686 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 04:58:47,735 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:58:47,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 550 places, 605 transitions, 1375 flow [2023-09-01 04:58:47,907 INFO L130 PetriNetUnfolder]: 89/735 cut-off events. [2023-09-01 04:58:47,907 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 04:58:47,925 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 735 events. 89/735 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2856 event pairs, 0 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 739. Up to 24 conditions per place. [2023-09-01 04:58:47,925 INFO L82 GeneralOperation]: Start removeDead. Operand has 550 places, 605 transitions, 1375 flow [2023-09-01 04:58:47,933 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 550 places, 605 transitions, 1375 flow [2023-09-01 04:58:47,934 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:58:47,934 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 550 places, 605 transitions, 1375 flow [2023-09-01 04:58:47,934 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 550 places, 605 transitions, 1375 flow [2023-09-01 04:58:47,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 550 places, 605 transitions, 1375 flow [2023-09-01 04:58:48,136 INFO L130 PetriNetUnfolder]: 89/735 cut-off events. [2023-09-01 04:58:48,137 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 04:58:48,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 835 conditions, 735 events. 89/735 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2856 event pairs, 0 based on Foata normal form. 0/590 useless extension candidates. Maximal degree in co-relation 739. Up to 24 conditions per place. [2023-09-01 04:58:48,190 INFO L119 LiptonReduction]: Number of co-enabled transitions 306306 [2023-09-01 04:59:00,184 INFO L134 LiptonReduction]: Checked pairs total: 488290 [2023-09-01 04:59:00,184 INFO L136 LiptonReduction]: Total number of compositions: 700 [2023-09-01 04:59:00,185 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 04:59:00,186 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:59:00,186 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 04:59:00,211 INFO L130 PetriNetUnfolder]: 32/199 cut-off events. [2023-09-01 04:59:00,212 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 04:59:00,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:59:00,212 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:59:00,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 04:59:00,213 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:59:00,213 INFO L85 PathProgramCache]: Analyzing trace with hash 614040005, now seen corresponding path program 1 times [2023-09-01 04:59:00,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:59:00,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [94141101] [2023-09-01 04:59:00,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:59:00,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:59:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:59:00,238 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 04:59:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:59:00,266 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 04:59:00,266 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 04:59:00,266 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 04:59:00,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 04:59:00,267 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 04:59:00,269 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 04:59:00,269 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 04:59:00,269 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 04:59:00,343 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:59:00,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 597 places, 657 transitions, 1506 flow [2023-09-01 04:59:00,543 INFO L130 PetriNetUnfolder]: 97/799 cut-off events. [2023-09-01 04:59:00,543 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 04:59:00,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 799 events. 97/799 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3147 event pairs, 0 based on Foata normal form. 0/641 useless extension candidates. Maximal degree in co-relation 817. Up to 26 conditions per place. [2023-09-01 04:59:00,564 INFO L82 GeneralOperation]: Start removeDead. Operand has 597 places, 657 transitions, 1506 flow [2023-09-01 04:59:00,574 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 597 places, 657 transitions, 1506 flow [2023-09-01 04:59:00,574 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:59:00,575 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 597 places, 657 transitions, 1506 flow [2023-09-01 04:59:00,575 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 597 places, 657 transitions, 1506 flow [2023-09-01 04:59:00,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 597 places, 657 transitions, 1506 flow [2023-09-01 04:59:00,824 INFO L130 PetriNetUnfolder]: 97/799 cut-off events. [2023-09-01 04:59:00,824 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 04:59:00,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 914 conditions, 799 events. 97/799 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3147 event pairs, 0 based on Foata normal form. 0/641 useless extension candidates. Maximal degree in co-relation 817. Up to 26 conditions per place. [2023-09-01 04:59:00,907 INFO L119 LiptonReduction]: Number of co-enabled transitions 365976 [2023-09-01 04:59:14,178 INFO L134 LiptonReduction]: Checked pairs total: 572288 [2023-09-01 04:59:14,179 INFO L136 LiptonReduction]: Total number of compositions: 755 [2023-09-01 04:59:14,180 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 04:59:14,182 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:59:14,182 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 04:59:14,200 INFO L130 PetriNetUnfolder]: 35/217 cut-off events. [2023-09-01 04:59:14,200 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 04:59:14,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:59:14,200 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:59:14,200 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 04:59:14,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:59:14,200 INFO L85 PathProgramCache]: Analyzing trace with hash -292478053, now seen corresponding path program 1 times [2023-09-01 04:59:14,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:59:14,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881642367] [2023-09-01 04:59:14,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:59:14,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:59:14,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:59:14,235 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 04:59:14,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:59:14,263 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 04:59:14,263 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 04:59:14,264 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 04:59:14,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 04:59:14,264 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 04:59:14,268 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 04:59:14,268 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 04:59:14,268 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 04:59:14,326 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:59:14,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 644 places, 709 transitions, 1639 flow [2023-09-01 04:59:14,603 INFO L130 PetriNetUnfolder]: 105/863 cut-off events. [2023-09-01 04:59:14,603 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 04:59:14,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 863 events. 105/863 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3437 event pairs, 0 based on Foata normal form. 0/692 useless extension candidates. Maximal degree in co-relation 896. Up to 28 conditions per place. [2023-09-01 04:59:14,619 INFO L82 GeneralOperation]: Start removeDead. Operand has 644 places, 709 transitions, 1639 flow [2023-09-01 04:59:14,629 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 644 places, 709 transitions, 1639 flow [2023-09-01 04:59:14,629 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:59:14,630 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 644 places, 709 transitions, 1639 flow [2023-09-01 04:59:14,630 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 644 places, 709 transitions, 1639 flow [2023-09-01 04:59:14,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 644 places, 709 transitions, 1639 flow [2023-09-01 04:59:14,868 INFO L130 PetriNetUnfolder]: 105/863 cut-off events. [2023-09-01 04:59:14,868 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 04:59:14,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 994 conditions, 863 events. 105/863 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3437 event pairs, 0 based on Foata normal form. 0/692 useless extension candidates. Maximal degree in co-relation 896. Up to 28 conditions per place. [2023-09-01 04:59:15,014 INFO L119 LiptonReduction]: Number of co-enabled transitions 430950 [2023-09-01 04:59:29,150 INFO L134 LiptonReduction]: Checked pairs total: 704534 [2023-09-01 04:59:29,150 INFO L136 LiptonReduction]: Total number of compositions: 817 [2023-09-01 04:59:29,151 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 04:59:29,152 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:59:29,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 04:59:29,182 INFO L130 PetriNetUnfolder]: 38/235 cut-off events. [2023-09-01 04:59:29,182 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 04:59:29,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:59:29,183 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:59:29,183 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 04:59:29,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:59:29,184 INFO L85 PathProgramCache]: Analyzing trace with hash 1563945280, now seen corresponding path program 1 times [2023-09-01 04:59:29,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:59:29,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773536379] [2023-09-01 04:59:29,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:59:29,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:59:29,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:59:29,210 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 04:59:29,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:59:29,236 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 04:59:29,236 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 04:59:29,237 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 04:59:29,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 04:59:29,237 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 04:59:29,238 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 04:59:29,238 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 04:59:29,238 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 04:59:29,302 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:59:29,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 691 places, 761 transitions, 1774 flow [2023-09-01 04:59:29,578 INFO L130 PetriNetUnfolder]: 113/927 cut-off events. [2023-09-01 04:59:29,578 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 04:59:29,607 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075 conditions, 927 events. 113/927 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3723 event pairs, 0 based on Foata normal form. 0/743 useless extension candidates. Maximal degree in co-relation 976. Up to 30 conditions per place. [2023-09-01 04:59:29,607 INFO L82 GeneralOperation]: Start removeDead. Operand has 691 places, 761 transitions, 1774 flow [2023-09-01 04:59:29,621 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 691 places, 761 transitions, 1774 flow [2023-09-01 04:59:29,622 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:59:29,622 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 691 places, 761 transitions, 1774 flow [2023-09-01 04:59:29,622 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 691 places, 761 transitions, 1774 flow [2023-09-01 04:59:29,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 691 places, 761 transitions, 1774 flow [2023-09-01 04:59:29,849 INFO L130 PetriNetUnfolder]: 113/927 cut-off events. [2023-09-01 04:59:29,849 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 04:59:29,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1075 conditions, 927 events. 113/927 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3723 event pairs, 0 based on Foata normal form. 0/743 useless extension candidates. Maximal degree in co-relation 976. Up to 30 conditions per place. [2023-09-01 04:59:29,945 INFO L119 LiptonReduction]: Number of co-enabled transitions 501228 [2023-09-01 04:59:45,747 INFO L134 LiptonReduction]: Checked pairs total: 820910 [2023-09-01 04:59:45,748 INFO L136 LiptonReduction]: Total number of compositions: 878 [2023-09-01 04:59:45,749 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 04:59:45,749 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 04:59:45,749 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 04:59:45,770 INFO L130 PetriNetUnfolder]: 41/253 cut-off events. [2023-09-01 04:59:45,770 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 04:59:45,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 04:59:45,770 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 04:59:45,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 04:59:45,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 04:59:45,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1745695929, now seen corresponding path program 1 times [2023-09-01 04:59:45,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 04:59:45,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390965095] [2023-09-01 04:59:45,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 04:59:45,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 04:59:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:59:45,792 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 04:59:45,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 04:59:45,813 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 04:59:45,813 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 04:59:45,813 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 04:59:45,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 04:59:45,813 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 04:59:45,814 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 04:59:45,814 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 04:59:45,814 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-09-01 04:59:45,941 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 04:59:45,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 738 places, 813 transitions, 1911 flow [2023-09-01 04:59:46,205 INFO L130 PetriNetUnfolder]: 121/991 cut-off events. [2023-09-01 04:59:46,205 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 04:59:46,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1157 conditions, 991 events. 121/991 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4018 event pairs, 0 based on Foata normal form. 0/794 useless extension candidates. Maximal degree in co-relation 1057. Up to 32 conditions per place. [2023-09-01 04:59:46,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 738 places, 813 transitions, 1911 flow [2023-09-01 04:59:46,238 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 738 places, 813 transitions, 1911 flow [2023-09-01 04:59:46,239 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 04:59:46,239 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 738 places, 813 transitions, 1911 flow [2023-09-01 04:59:46,239 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 738 places, 813 transitions, 1911 flow [2023-09-01 04:59:46,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 738 places, 813 transitions, 1911 flow [2023-09-01 04:59:46,577 INFO L130 PetriNetUnfolder]: 121/991 cut-off events. [2023-09-01 04:59:46,578 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 04:59:46,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1157 conditions, 991 events. 121/991 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4018 event pairs, 0 based on Foata normal form. 0/794 useless extension candidates. Maximal degree in co-relation 1057. Up to 32 conditions per place. [2023-09-01 04:59:46,724 INFO L119 LiptonReduction]: Number of co-enabled transitions 576810 [2023-09-01 05:00:02,662 INFO L134 LiptonReduction]: Checked pairs total: 884702 [2023-09-01 05:00:02,663 INFO L136 LiptonReduction]: Total number of compositions: 911 [2023-09-01 05:00:02,664 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:00:02,665 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:00:02,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:00:02,701 INFO L130 PetriNetUnfolder]: 44/271 cut-off events. [2023-09-01 05:00:02,701 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 05:00:02,701 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:00:02,701 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:00:02,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:00:02,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:00:02,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1880718120, now seen corresponding path program 1 times [2023-09-01 05:00:02,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:00:02,703 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133337687] [2023-09-01 05:00:02,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:00:02,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:00:02,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:00:02,725 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:00:02,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:00:02,747 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:00:02,748 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:00:02,748 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:00:02,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 05:00:02,748 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:00:02,749 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:00:02,749 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:00:02,749 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-09-01 05:00:02,855 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:00:02,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 785 places, 865 transitions, 2050 flow [2023-09-01 05:00:03,237 INFO L130 PetriNetUnfolder]: 129/1055 cut-off events. [2023-09-01 05:00:03,237 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 05:00:03,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 1055 events. 129/1055 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4306 event pairs, 0 based on Foata normal form. 0/845 useless extension candidates. Maximal degree in co-relation 1139. Up to 34 conditions per place. [2023-09-01 05:00:03,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 785 places, 865 transitions, 2050 flow [2023-09-01 05:00:03,294 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 785 places, 865 transitions, 2050 flow [2023-09-01 05:00:03,295 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:00:03,295 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 785 places, 865 transitions, 2050 flow [2023-09-01 05:00:03,295 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 785 places, 865 transitions, 2050 flow [2023-09-01 05:00:03,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 785 places, 865 transitions, 2050 flow [2023-09-01 05:00:03,638 INFO L130 PetriNetUnfolder]: 129/1055 cut-off events. [2023-09-01 05:00:03,638 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 05:00:03,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 1055 events. 129/1055 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4306 event pairs, 0 based on Foata normal form. 0/845 useless extension candidates. Maximal degree in co-relation 1139. Up to 34 conditions per place. [2023-09-01 05:00:03,783 INFO L119 LiptonReduction]: Number of co-enabled transitions 657696 [2023-09-01 05:00:21,523 INFO L134 LiptonReduction]: Checked pairs total: 1028743 [2023-09-01 05:00:21,523 INFO L136 LiptonReduction]: Total number of compositions: 995 [2023-09-01 05:00:21,524 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:00:21,525 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:00:21,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:00:21,555 INFO L130 PetriNetUnfolder]: 47/289 cut-off events. [2023-09-01 05:00:21,555 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 05:00:21,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:00:21,555 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:00:21,556 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:00:21,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:00:21,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1875531951, now seen corresponding path program 1 times [2023-09-01 05:00:21,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:00:21,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537885880] [2023-09-01 05:00:21,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:00:21,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:00:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:00:21,609 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:00:21,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:00:21,639 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:00:21,640 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:00:21,640 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:00:21,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 05:00:21,640 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:00:21,641 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:00:21,641 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:00:21,641 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-09-01 05:00:21,789 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:00:21,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 832 places, 917 transitions, 2191 flow [2023-09-01 05:00:22,382 INFO L130 PetriNetUnfolder]: 137/1119 cut-off events. [2023-09-01 05:00:22,383 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 05:00:22,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 1119 events. 137/1119 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4555 event pairs, 0 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 1222. Up to 36 conditions per place. [2023-09-01 05:00:22,429 INFO L82 GeneralOperation]: Start removeDead. Operand has 832 places, 917 transitions, 2191 flow [2023-09-01 05:00:22,449 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 832 places, 917 transitions, 2191 flow [2023-09-01 05:00:22,449 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:00:22,449 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 832 places, 917 transitions, 2191 flow [2023-09-01 05:00:22,449 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 832 places, 917 transitions, 2191 flow [2023-09-01 05:00:22,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 832 places, 917 transitions, 2191 flow [2023-09-01 05:00:22,961 INFO L130 PetriNetUnfolder]: 137/1119 cut-off events. [2023-09-01 05:00:22,962 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 05:00:22,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1324 conditions, 1119 events. 137/1119 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4555 event pairs, 0 based on Foata normal form. 0/896 useless extension candidates. Maximal degree in co-relation 1222. Up to 36 conditions per place. [2023-09-01 05:00:23,093 INFO L119 LiptonReduction]: Number of co-enabled transitions 743886 [2023-09-01 05:00:41,133 INFO L134 LiptonReduction]: Checked pairs total: 1150734 [2023-09-01 05:00:41,134 INFO L136 LiptonReduction]: Total number of compositions: 1032 [2023-09-01 05:00:41,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:00:41,136 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:00:41,136 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:00:41,203 INFO L130 PetriNetUnfolder]: 50/307 cut-off events. [2023-09-01 05:00:41,203 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 05:00:41,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:00:41,203 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:00:41,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:00:41,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:00:41,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1492470842, now seen corresponding path program 1 times [2023-09-01 05:00:41,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:00:41,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484939005] [2023-09-01 05:00:41,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:00:41,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:00:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:00:41,229 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:00:41,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:00:41,256 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:00:41,257 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:00:41,257 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:00:41,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 05:00:41,257 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:00:41,258 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:00:41,258 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:00:41,258 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-09-01 05:00:41,348 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:00:41,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 879 places, 969 transitions, 2334 flow [2023-09-01 05:00:41,698 INFO L130 PetriNetUnfolder]: 145/1183 cut-off events. [2023-09-01 05:00:41,698 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 05:00:41,729 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1409 conditions, 1183 events. 145/1183 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4835 event pairs, 0 based on Foata normal form. 0/947 useless extension candidates. Maximal degree in co-relation 1306. Up to 38 conditions per place. [2023-09-01 05:00:41,729 INFO L82 GeneralOperation]: Start removeDead. Operand has 879 places, 969 transitions, 2334 flow [2023-09-01 05:00:41,744 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 879 places, 969 transitions, 2334 flow [2023-09-01 05:00:41,744 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:00:41,744 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 879 places, 969 transitions, 2334 flow [2023-09-01 05:00:41,744 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 879 places, 969 transitions, 2334 flow [2023-09-01 05:00:41,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 879 places, 969 transitions, 2334 flow [2023-09-01 05:00:42,097 INFO L130 PetriNetUnfolder]: 145/1183 cut-off events. [2023-09-01 05:00:42,097 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 05:00:42,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1409 conditions, 1183 events. 145/1183 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4835 event pairs, 0 based on Foata normal form. 0/947 useless extension candidates. Maximal degree in co-relation 1306. Up to 38 conditions per place. [2023-09-01 05:00:42,322 INFO L119 LiptonReduction]: Number of co-enabled transitions 835380 [2023-09-01 05:01:01,540 INFO L134 LiptonReduction]: Checked pairs total: 1276012 [2023-09-01 05:01:01,541 INFO L136 LiptonReduction]: Total number of compositions: 1097 [2023-09-01 05:01:01,542 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:01:01,542 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:01:01,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:01:01,575 INFO L130 PetriNetUnfolder]: 53/325 cut-off events. [2023-09-01 05:01:01,575 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 05:01:01,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:01:01,576 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:01:01,576 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:01:01,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:01:01,576 INFO L85 PathProgramCache]: Analyzing trace with hash -1425083216, now seen corresponding path program 1 times [2023-09-01 05:01:01,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:01:01,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985972429] [2023-09-01 05:01:01,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:01:01,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:01:01,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:01:01,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:01:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:01:01,649 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:01:01,650 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:01:01,651 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:01:01,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 05:01:01,651 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:01:01,651 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:01:01,652 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:01:01,652 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-09-01 05:01:01,731 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:01:01,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 926 places, 1021 transitions, 2479 flow [2023-09-01 05:01:02,310 INFO L130 PetriNetUnfolder]: 153/1247 cut-off events. [2023-09-01 05:01:02,310 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 05:01:02,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 1247 events. 153/1247 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5131 event pairs, 0 based on Foata normal form. 0/998 useless extension candidates. Maximal degree in co-relation 1391. Up to 40 conditions per place. [2023-09-01 05:01:02,345 INFO L82 GeneralOperation]: Start removeDead. Operand has 926 places, 1021 transitions, 2479 flow [2023-09-01 05:01:02,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 926 places, 1021 transitions, 2479 flow [2023-09-01 05:01:02,363 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:01:02,363 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 926 places, 1021 transitions, 2479 flow [2023-09-01 05:01:02,363 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 926 places, 1021 transitions, 2479 flow [2023-09-01 05:01:02,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 926 places, 1021 transitions, 2479 flow [2023-09-01 05:01:02,740 INFO L130 PetriNetUnfolder]: 153/1247 cut-off events. [2023-09-01 05:01:02,740 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 05:01:02,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 1247 events. 153/1247 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5131 event pairs, 0 based on Foata normal form. 0/998 useless extension candidates. Maximal degree in co-relation 1391. Up to 40 conditions per place. [2023-09-01 05:01:03,051 INFO L119 LiptonReduction]: Number of co-enabled transitions 932178 [2023-09-01 05:01:23,972 INFO L134 LiptonReduction]: Checked pairs total: 1496201 [2023-09-01 05:01:23,973 INFO L136 LiptonReduction]: Total number of compositions: 1160 [2023-09-01 05:01:23,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:01:23,974 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:01:23,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:01:24,010 INFO L130 PetriNetUnfolder]: 56/343 cut-off events. [2023-09-01 05:01:24,011 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 05:01:24,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:01:24,011 INFO L208 CegarLoopForPetriNet]: trace histogram [20, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:01:24,011 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:01:24,011 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:01:24,011 INFO L85 PathProgramCache]: Analyzing trace with hash -1834776667, now seen corresponding path program 1 times [2023-09-01 05:01:24,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:01:24,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342491224] [2023-09-01 05:01:24,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:01:24,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:01:24,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:01:24,042 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:01:24,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:01:24,086 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:01:24,086 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:01:24,086 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:01:24,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 05:01:24,087 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:01:24,088 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:01:24,088 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:01:24,088 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-09-01 05:01:24,172 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:01:24,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 973 places, 1073 transitions, 2626 flow [2023-09-01 05:01:24,695 INFO L130 PetriNetUnfolder]: 161/1311 cut-off events. [2023-09-01 05:01:24,695 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 05:01:24,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 1311 events. 161/1311 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5409 event pairs, 0 based on Foata normal form. 0/1049 useless extension candidates. Maximal degree in co-relation 1477. Up to 42 conditions per place. [2023-09-01 05:01:24,739 INFO L82 GeneralOperation]: Start removeDead. Operand has 973 places, 1073 transitions, 2626 flow [2023-09-01 05:01:24,759 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 973 places, 1073 transitions, 2626 flow [2023-09-01 05:01:24,759 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:01:24,759 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 973 places, 1073 transitions, 2626 flow [2023-09-01 05:01:24,759 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 973 places, 1073 transitions, 2626 flow [2023-09-01 05:01:24,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 973 places, 1073 transitions, 2626 flow [2023-09-01 05:01:25,231 INFO L130 PetriNetUnfolder]: 161/1311 cut-off events. [2023-09-01 05:01:25,231 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 05:01:25,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1582 conditions, 1311 events. 161/1311 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5409 event pairs, 0 based on Foata normal form. 0/1049 useless extension candidates. Maximal degree in co-relation 1477. Up to 42 conditions per place. [2023-09-01 05:01:25,416 INFO L119 LiptonReduction]: Number of co-enabled transitions 1034280 [2023-09-01 05:01:48,034 INFO L134 LiptonReduction]: Checked pairs total: 1682211 [2023-09-01 05:01:48,034 INFO L136 LiptonReduction]: Total number of compositions: 1230 [2023-09-01 05:01:48,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:01:48,037 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:01:48,037 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:01:48,079 INFO L130 PetriNetUnfolder]: 59/361 cut-off events. [2023-09-01 05:01:48,079 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 05:01:48,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:01:48,079 INFO L208 CegarLoopForPetriNet]: trace histogram [21, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:01:48,080 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:01:48,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:01:48,080 INFO L85 PathProgramCache]: Analyzing trace with hash 586250763, now seen corresponding path program 1 times [2023-09-01 05:01:48,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:01:48,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386817806] [2023-09-01 05:01:48,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:01:48,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:01:48,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:01:48,107 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:01:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:01:48,135 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:01:48,136 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:01:48,136 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:01:48,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 05:01:48,136 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:01:48,137 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:01:48,137 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:01:48,137 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-09-01 05:01:48,236 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:01:48,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1020 places, 1125 transitions, 2775 flow [2023-09-01 05:01:48,800 INFO L130 PetriNetUnfolder]: 169/1375 cut-off events. [2023-09-01 05:01:48,800 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 05:01:48,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1670 conditions, 1375 events. 169/1375 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5678 event pairs, 0 based on Foata normal form. 0/1100 useless extension candidates. Maximal degree in co-relation 1564. Up to 44 conditions per place. [2023-09-01 05:01:48,842 INFO L82 GeneralOperation]: Start removeDead. Operand has 1020 places, 1125 transitions, 2775 flow [2023-09-01 05:01:48,860 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1020 places, 1125 transitions, 2775 flow [2023-09-01 05:01:48,861 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:01:48,861 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1020 places, 1125 transitions, 2775 flow [2023-09-01 05:01:48,861 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1020 places, 1125 transitions, 2775 flow [2023-09-01 05:01:48,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1020 places, 1125 transitions, 2775 flow [2023-09-01 05:01:49,296 INFO L130 PetriNetUnfolder]: 169/1375 cut-off events. [2023-09-01 05:01:49,296 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 05:01:49,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1670 conditions, 1375 events. 169/1375 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5678 event pairs, 0 based on Foata normal form. 0/1100 useless extension candidates. Maximal degree in co-relation 1564. Up to 44 conditions per place. [2023-09-01 05:01:49,544 INFO L119 LiptonReduction]: Number of co-enabled transitions 1141686 [2023-09-01 05:02:12,832 INFO L134 LiptonReduction]: Checked pairs total: 1765927 [2023-09-01 05:02:12,833 INFO L136 LiptonReduction]: Total number of compositions: 1276 [2023-09-01 05:02:12,834 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:02:12,834 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:02:12,835 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:02:12,883 INFO L130 PetriNetUnfolder]: 62/379 cut-off events. [2023-09-01 05:02:12,884 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 05:02:12,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:02:12,884 INFO L208 CegarLoopForPetriNet]: trace histogram [22, 21, 21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:02:12,884 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:02:12,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:02:12,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1652189936, now seen corresponding path program 1 times [2023-09-01 05:02:12,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:02:12,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480591935] [2023-09-01 05:02:12,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:02:12,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:02:12,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:02:12,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:02:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:02:12,956 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:02:12,956 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:02:12,956 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:02:12,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 05:02:12,957 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:02:12,957 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:02:12,957 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:02:12,957 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-09-01 05:02:13,094 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:02:13,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1067 places, 1177 transitions, 2926 flow [2023-09-01 05:02:13,664 INFO L130 PetriNetUnfolder]: 177/1439 cut-off events. [2023-09-01 05:02:13,664 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 05:02:13,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 1439 events. 177/1439 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5963 event pairs, 0 based on Foata normal form. 0/1151 useless extension candidates. Maximal degree in co-relation 1652. Up to 46 conditions per place. [2023-09-01 05:02:13,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 1067 places, 1177 transitions, 2926 flow [2023-09-01 05:02:13,787 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1067 places, 1177 transitions, 2926 flow [2023-09-01 05:02:13,788 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:02:13,788 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1067 places, 1177 transitions, 2926 flow [2023-09-01 05:02:13,788 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1067 places, 1177 transitions, 2926 flow [2023-09-01 05:02:13,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1067 places, 1177 transitions, 2926 flow [2023-09-01 05:02:14,330 INFO L130 PetriNetUnfolder]: 177/1439 cut-off events. [2023-09-01 05:02:14,330 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 05:02:14,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1759 conditions, 1439 events. 177/1439 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 5963 event pairs, 0 based on Foata normal form. 0/1151 useless extension candidates. Maximal degree in co-relation 1652. Up to 46 conditions per place. [2023-09-01 05:02:14,737 INFO L119 LiptonReduction]: Number of co-enabled transitions 1254396 [2023-09-01 05:02:40,036 INFO L134 LiptonReduction]: Checked pairs total: 2046637 [2023-09-01 05:02:40,036 INFO L136 LiptonReduction]: Total number of compositions: 1355 [2023-09-01 05:02:40,037 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:02:40,038 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:02:40,038 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:02:40,089 INFO L130 PetriNetUnfolder]: 65/397 cut-off events. [2023-09-01 05:02:40,089 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 05:02:40,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:02:40,089 INFO L208 CegarLoopForPetriNet]: trace histogram [23, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:02:40,089 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:02:40,090 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:02:40,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1120198114, now seen corresponding path program 1 times [2023-09-01 05:02:40,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:02:40,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755607695] [2023-09-01 05:02:40,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:02:40,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:02:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:02:40,130 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:02:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:02:40,168 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:02:40,169 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:02:40,169 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:02:40,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 05:02:40,169 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:02:40,170 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:02:40,170 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:02:40,170 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-09-01 05:02:40,279 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:02:40,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1114 places, 1229 transitions, 3079 flow [2023-09-01 05:02:40,947 INFO L130 PetriNetUnfolder]: 185/1503 cut-off events. [2023-09-01 05:02:40,947 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 05:02:41,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 1503 events. 185/1503 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 6239 event pairs, 0 based on Foata normal form. 0/1202 useless extension candidates. Maximal degree in co-relation 1741. Up to 48 conditions per place. [2023-09-01 05:02:41,012 INFO L82 GeneralOperation]: Start removeDead. Operand has 1114 places, 1229 transitions, 3079 flow [2023-09-01 05:02:41,038 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1114 places, 1229 transitions, 3079 flow [2023-09-01 05:02:41,039 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:02:41,039 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1114 places, 1229 transitions, 3079 flow [2023-09-01 05:02:41,039 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1114 places, 1229 transitions, 3079 flow [2023-09-01 05:02:41,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1114 places, 1229 transitions, 3079 flow [2023-09-01 05:02:41,696 INFO L130 PetriNetUnfolder]: 185/1503 cut-off events. [2023-09-01 05:02:41,696 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 05:02:41,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 1503 events. 185/1503 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 6239 event pairs, 0 based on Foata normal form. 0/1202 useless extension candidates. Maximal degree in co-relation 1741. Up to 48 conditions per place. [2023-09-01 05:02:41,929 INFO L119 LiptonReduction]: Number of co-enabled transitions 1372410 [2023-09-01 05:03:08,807 INFO L134 LiptonReduction]: Checked pairs total: 2212504 [2023-09-01 05:03:08,808 INFO L136 LiptonReduction]: Total number of compositions: 1425 [2023-09-01 05:03:08,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:03:08,809 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:03:08,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:03:08,861 INFO L130 PetriNetUnfolder]: 68/415 cut-off events. [2023-09-01 05:03:08,861 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 05:03:08,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:03:08,861 INFO L208 CegarLoopForPetriNet]: trace histogram [24, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:03:08,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:03:08,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:03:08,862 INFO L85 PathProgramCache]: Analyzing trace with hash 25450800, now seen corresponding path program 1 times [2023-09-01 05:03:08,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:03:08,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100085422] [2023-09-01 05:03:08,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:03:08,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:03:08,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:03:08,917 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:03:08,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:03:08,959 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:03:08,959 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:03:08,960 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:03:08,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 05:03:08,960 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:03:08,960 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:03:08,960 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:03:08,960 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-09-01 05:03:09,056 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:03:09,063 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1161 places, 1281 transitions, 3234 flow [2023-09-01 05:03:09,794 INFO L130 PetriNetUnfolder]: 193/1567 cut-off events. [2023-09-01 05:03:09,795 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 05:03:09,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1940 conditions, 1567 events. 193/1567 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 6550 event pairs, 0 based on Foata normal form. 0/1253 useless extension candidates. Maximal degree in co-relation 1831. Up to 50 conditions per place. [2023-09-01 05:03:09,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 1161 places, 1281 transitions, 3234 flow [2023-09-01 05:03:09,911 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1161 places, 1281 transitions, 3234 flow [2023-09-01 05:03:09,911 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:03:09,911 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1161 places, 1281 transitions, 3234 flow [2023-09-01 05:03:09,912 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1161 places, 1281 transitions, 3234 flow [2023-09-01 05:03:09,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1161 places, 1281 transitions, 3234 flow [2023-09-01 05:03:10,624 INFO L130 PetriNetUnfolder]: 193/1567 cut-off events. [2023-09-01 05:03:10,625 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 05:03:10,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1940 conditions, 1567 events. 193/1567 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 6550 event pairs, 0 based on Foata normal form. 0/1253 useless extension candidates. Maximal degree in co-relation 1831. Up to 50 conditions per place. [2023-09-01 05:03:10,894 INFO L119 LiptonReduction]: Number of co-enabled transitions 1495728 [2023-09-01 05:03:38,503 INFO L134 LiptonReduction]: Checked pairs total: 2397472 [2023-09-01 05:03:38,503 INFO L136 LiptonReduction]: Total number of compositions: 1470 [2023-09-01 05:03:38,504 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:03:38,505 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:03:38,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:03:38,560 INFO L130 PetriNetUnfolder]: 71/433 cut-off events. [2023-09-01 05:03:38,560 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 05:03:38,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:03:38,560 INFO L208 CegarLoopForPetriNet]: trace histogram [25, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:03:38,560 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:03:38,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:03:38,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1519034876, now seen corresponding path program 1 times [2023-09-01 05:03:38,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:03:38,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217397731] [2023-09-01 05:03:38,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:03:38,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:03:38,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:03:38,598 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:03:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:03:38,638 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:03:38,638 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:03:38,639 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:03:38,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 05:03:38,639 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:03:38,639 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:03:38,639 WARN L233 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:03:38,640 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2023-09-01 05:03:38,808 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:03:38,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1208 places, 1333 transitions, 3391 flow [2023-09-01 05:03:39,475 INFO L130 PetriNetUnfolder]: 201/1631 cut-off events. [2023-09-01 05:03:39,475 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 05:03:39,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2032 conditions, 1631 events. 201/1631 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 6881 event pairs, 0 based on Foata normal form. 0/1304 useless extension candidates. Maximal degree in co-relation 1922. Up to 52 conditions per place. [2023-09-01 05:03:39,551 INFO L82 GeneralOperation]: Start removeDead. Operand has 1208 places, 1333 transitions, 3391 flow [2023-09-01 05:03:39,600 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1208 places, 1333 transitions, 3391 flow [2023-09-01 05:03:39,600 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:03:39,600 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1208 places, 1333 transitions, 3391 flow [2023-09-01 05:03:39,600 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1208 places, 1333 transitions, 3391 flow [2023-09-01 05:03:39,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1208 places, 1333 transitions, 3391 flow [2023-09-01 05:03:40,377 INFO L130 PetriNetUnfolder]: 201/1631 cut-off events. [2023-09-01 05:03:40,377 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 05:03:40,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2032 conditions, 1631 events. 201/1631 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 6881 event pairs, 0 based on Foata normal form. 0/1304 useless extension candidates. Maximal degree in co-relation 1922. Up to 52 conditions per place. [2023-09-01 05:03:40,674 INFO L119 LiptonReduction]: Number of co-enabled transitions 1624350 [2023-09-01 05:04:09,126 INFO L134 LiptonReduction]: Checked pairs total: 2636672 [2023-09-01 05:04:09,126 INFO L136 LiptonReduction]: Total number of compositions: 1531 [2023-09-01 05:04:09,127 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:04:09,128 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:04:09,128 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:04:09,187 INFO L130 PetriNetUnfolder]: 74/451 cut-off events. [2023-09-01 05:04:09,187 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 05:04:09,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:04:09,187 INFO L208 CegarLoopForPetriNet]: trace histogram [26, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:04:09,187 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:04:09,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:04:09,187 INFO L85 PathProgramCache]: Analyzing trace with hash 752265385, now seen corresponding path program 1 times [2023-09-01 05:04:09,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:04:09,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091559643] [2023-09-01 05:04:09,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:04:09,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:04:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:04:09,222 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:04:09,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:04:09,265 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:04:09,265 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:04:09,265 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:04:09,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-09-01 05:04:09,265 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:04:09,266 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:04:09,266 WARN L233 ceAbstractionStarter]: 25 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:04:09,266 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 26 thread instances. [2023-09-01 05:04:09,365 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:04:09,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1255 places, 1385 transitions, 3550 flow [2023-09-01 05:04:10,112 INFO L130 PetriNetUnfolder]: 209/1695 cut-off events. [2023-09-01 05:04:10,112 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-09-01 05:04:10,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2125 conditions, 1695 events. 209/1695 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 7166 event pairs, 0 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 2014. Up to 54 conditions per place. [2023-09-01 05:04:10,191 INFO L82 GeneralOperation]: Start removeDead. Operand has 1255 places, 1385 transitions, 3550 flow [2023-09-01 05:04:10,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1255 places, 1385 transitions, 3550 flow [2023-09-01 05:04:10,226 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:04:10,226 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1255 places, 1385 transitions, 3550 flow [2023-09-01 05:04:10,226 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1255 places, 1385 transitions, 3550 flow [2023-09-01 05:04:10,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1255 places, 1385 transitions, 3550 flow [2023-09-01 05:04:11,041 INFO L130 PetriNetUnfolder]: 209/1695 cut-off events. [2023-09-01 05:04:11,042 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-09-01 05:04:11,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2125 conditions, 1695 events. 209/1695 cut-off events. For 3250/3250 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 7166 event pairs, 0 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 2014. Up to 54 conditions per place. [2023-09-01 05:04:11,359 INFO L119 LiptonReduction]: Number of co-enabled transitions 1758276 [2023-09-01 05:04:41,572 INFO L134 LiptonReduction]: Checked pairs total: 2764636 [2023-09-01 05:04:41,572 INFO L136 LiptonReduction]: Total number of compositions: 1622 [2023-09-01 05:04:41,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:04:41,574 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:04:41,574 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:04:41,644 INFO L130 PetriNetUnfolder]: 77/469 cut-off events. [2023-09-01 05:04:41,645 INFO L131 PetriNetUnfolder]: For 3250/3250 co-relation queries the response was YES. [2023-09-01 05:04:41,645 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:04:41,645 INFO L208 CegarLoopForPetriNet]: trace histogram [27, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:04:41,645 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:04:41,645 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:04:41,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1621943159, now seen corresponding path program 1 times [2023-09-01 05:04:41,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:04:41,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538025294] [2023-09-01 05:04:41,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:04:41,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:04:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:04:41,700 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:04:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:04:41,757 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:04:41,757 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:04:41,757 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:04:41,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-09-01 05:04:41,758 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:04:41,758 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:04:41,758 WARN L233 ceAbstractionStarter]: 26 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:04:41,758 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 27 thread instances. [2023-09-01 05:04:41,863 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:04:41,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1302 places, 1437 transitions, 3711 flow [2023-09-01 05:04:42,713 INFO L130 PetriNetUnfolder]: 217/1759 cut-off events. [2023-09-01 05:04:42,714 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-09-01 05:04:42,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 1759 events. 217/1759 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 7394 event pairs, 0 based on Foata normal form. 0/1406 useless extension candidates. Maximal degree in co-relation 2107. Up to 56 conditions per place. [2023-09-01 05:04:42,786 INFO L82 GeneralOperation]: Start removeDead. Operand has 1302 places, 1437 transitions, 3711 flow [2023-09-01 05:04:42,813 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1302 places, 1437 transitions, 3711 flow [2023-09-01 05:04:42,814 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:04:42,814 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1302 places, 1437 transitions, 3711 flow [2023-09-01 05:04:42,814 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1302 places, 1437 transitions, 3711 flow [2023-09-01 05:04:42,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1302 places, 1437 transitions, 3711 flow [2023-09-01 05:04:43,535 INFO L130 PetriNetUnfolder]: 217/1759 cut-off events. [2023-09-01 05:04:43,535 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-09-01 05:04:43,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2219 conditions, 1759 events. 217/1759 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 7394 event pairs, 0 based on Foata normal form. 0/1406 useless extension candidates. Maximal degree in co-relation 2107. Up to 56 conditions per place. [2023-09-01 05:04:44,206 INFO L119 LiptonReduction]: Number of co-enabled transitions 1897506 [2023-09-01 05:05:14,702 INFO L134 LiptonReduction]: Checked pairs total: 2907948 [2023-09-01 05:05:14,702 INFO L136 LiptonReduction]: Total number of compositions: 1642 [2023-09-01 05:05:14,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:05:14,704 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:05:14,704 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:05:14,831 INFO L130 PetriNetUnfolder]: 80/487 cut-off events. [2023-09-01 05:05:14,831 INFO L131 PetriNetUnfolder]: For 3627/3627 co-relation queries the response was YES. [2023-09-01 05:05:14,831 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:05:14,831 INFO L208 CegarLoopForPetriNet]: trace histogram [28, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:05:14,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:05:14,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:05:14,831 INFO L85 PathProgramCache]: Analyzing trace with hash 1881933206, now seen corresponding path program 1 times [2023-09-01 05:05:14,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:05:14,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693699417] [2023-09-01 05:05:14,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:05:14,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:05:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:05:14,868 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:05:14,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:05:14,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:05:14,908 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:05:14,908 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:05:14,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-09-01 05:05:14,908 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:05:14,909 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:05:14,909 WARN L233 ceAbstractionStarter]: 27 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:05:14,909 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 28 thread instances. [2023-09-01 05:05:15,016 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:05:15,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1349 places, 1489 transitions, 3874 flow [2023-09-01 05:05:15,978 INFO L130 PetriNetUnfolder]: 225/1823 cut-off events. [2023-09-01 05:05:15,978 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-09-01 05:05:16,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 1823 events. 225/1823 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 7659 event pairs, 0 based on Foata normal form. 0/1457 useless extension candidates. Maximal degree in co-relation 2201. Up to 58 conditions per place. [2023-09-01 05:05:16,070 INFO L82 GeneralOperation]: Start removeDead. Operand has 1349 places, 1489 transitions, 3874 flow [2023-09-01 05:05:16,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1349 places, 1489 transitions, 3874 flow [2023-09-01 05:05:16,108 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:05:16,108 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1349 places, 1489 transitions, 3874 flow [2023-09-01 05:05:16,108 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1349 places, 1489 transitions, 3874 flow [2023-09-01 05:05:16,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1349 places, 1489 transitions, 3874 flow [2023-09-01 05:05:16,915 INFO L130 PetriNetUnfolder]: 225/1823 cut-off events. [2023-09-01 05:05:16,915 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-09-01 05:05:16,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2314 conditions, 1823 events. 225/1823 cut-off events. For 4032/4032 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 7659 event pairs, 0 based on Foata normal form. 0/1457 useless extension candidates. Maximal degree in co-relation 2201. Up to 58 conditions per place. [2023-09-01 05:05:17,335 INFO L119 LiptonReduction]: Number of co-enabled transitions 2042040 [2023-09-01 05:05:49,277 INFO L134 LiptonReduction]: Checked pairs total: 3142818 [2023-09-01 05:05:49,277 INFO L136 LiptonReduction]: Total number of compositions: 1704 [2023-09-01 05:05:49,279 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:05:49,280 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:05:49,280 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:05:49,361 INFO L130 PetriNetUnfolder]: 83/505 cut-off events. [2023-09-01 05:05:49,361 INFO L131 PetriNetUnfolder]: For 4032/4032 co-relation queries the response was YES. [2023-09-01 05:05:49,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:05:49,361 INFO L208 CegarLoopForPetriNet]: trace histogram [29, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:05:49,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:05:49,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:05:49,362 INFO L85 PathProgramCache]: Analyzing trace with hash -411152902, now seen corresponding path program 1 times [2023-09-01 05:05:49,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:05:49,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379905313] [2023-09-01 05:05:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:05:49,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:05:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:05:49,403 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:05:49,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:05:49,448 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:05:49,449 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:05:49,449 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:05:49,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-09-01 05:05:49,449 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:05:49,450 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:05:49,450 WARN L233 ceAbstractionStarter]: 28 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:05:49,450 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 29 thread instances. [2023-09-01 05:05:49,563 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:05:49,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1396 places, 1541 transitions, 4039 flow [2023-09-01 05:05:50,645 INFO L130 PetriNetUnfolder]: 233/1887 cut-off events. [2023-09-01 05:05:50,645 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-09-01 05:05:50,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2410 conditions, 1887 events. 233/1887 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 7970 event pairs, 0 based on Foata normal form. 0/1508 useless extension candidates. Maximal degree in co-relation 2296. Up to 60 conditions per place. [2023-09-01 05:05:50,722 INFO L82 GeneralOperation]: Start removeDead. Operand has 1396 places, 1541 transitions, 4039 flow [2023-09-01 05:05:50,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1396 places, 1541 transitions, 4039 flow [2023-09-01 05:05:50,751 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:05:50,751 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1396 places, 1541 transitions, 4039 flow [2023-09-01 05:05:50,751 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1396 places, 1541 transitions, 4039 flow [2023-09-01 05:05:50,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1396 places, 1541 transitions, 4039 flow [2023-09-01 05:05:51,692 INFO L130 PetriNetUnfolder]: 233/1887 cut-off events. [2023-09-01 05:05:51,692 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-09-01 05:05:51,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2410 conditions, 1887 events. 233/1887 cut-off events. For 4466/4466 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 7970 event pairs, 0 based on Foata normal form. 0/1508 useless extension candidates. Maximal degree in co-relation 2296. Up to 60 conditions per place. [2023-09-01 05:05:52,423 INFO L119 LiptonReduction]: Number of co-enabled transitions 2191878 [2023-09-01 05:06:27,074 INFO L134 LiptonReduction]: Checked pairs total: 3572955 [2023-09-01 05:06:27,074 INFO L136 LiptonReduction]: Total number of compositions: 1781 [2023-09-01 05:06:27,076 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:06:27,076 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:06:27,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:06:27,206 INFO L130 PetriNetUnfolder]: 86/523 cut-off events. [2023-09-01 05:06:27,206 INFO L131 PetriNetUnfolder]: For 4466/4466 co-relation queries the response was YES. [2023-09-01 05:06:27,206 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:06:27,207 INFO L208 CegarLoopForPetriNet]: trace histogram [30, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:06:27,207 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:06:27,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:06:27,207 INFO L85 PathProgramCache]: Analyzing trace with hash 770135524, now seen corresponding path program 1 times [2023-09-01 05:06:27,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:06:27,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982622099] [2023-09-01 05:06:27,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:06:27,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:06:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:06:27,259 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:06:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:06:27,307 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:06:27,308 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:06:27,308 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:06:27,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2023-09-01 05:06:27,309 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:06:27,309 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:06:27,309 WARN L233 ceAbstractionStarter]: 29 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:06:27,309 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 30 thread instances. [2023-09-01 05:06:27,431 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:06:27,440 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1443 places, 1593 transitions, 4206 flow [2023-09-01 05:06:28,593 INFO L130 PetriNetUnfolder]: 241/1951 cut-off events. [2023-09-01 05:06:28,593 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-09-01 05:06:28,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 1951 events. 241/1951 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8216 event pairs, 0 based on Foata normal form. 0/1559 useless extension candidates. Maximal degree in co-relation 2392. Up to 62 conditions per place. [2023-09-01 05:06:28,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 1443 places, 1593 transitions, 4206 flow [2023-09-01 05:06:28,703 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1443 places, 1593 transitions, 4206 flow [2023-09-01 05:06:28,704 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:06:28,704 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1443 places, 1593 transitions, 4206 flow [2023-09-01 05:06:28,704 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1443 places, 1593 transitions, 4206 flow [2023-09-01 05:06:28,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1443 places, 1593 transitions, 4206 flow [2023-09-01 05:06:29,817 INFO L130 PetriNetUnfolder]: 241/1951 cut-off events. [2023-09-01 05:06:29,817 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-09-01 05:06:29,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2507 conditions, 1951 events. 241/1951 cut-off events. For 4930/4930 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8216 event pairs, 0 based on Foata normal form. 0/1559 useless extension candidates. Maximal degree in co-relation 2392. Up to 62 conditions per place. [2023-09-01 05:06:30,344 INFO L119 LiptonReduction]: Number of co-enabled transitions 2347020 [2023-09-01 05:07:06,056 INFO L134 LiptonReduction]: Checked pairs total: 3783758 [2023-09-01 05:07:06,056 INFO L136 LiptonReduction]: Total number of compositions: 1847 [2023-09-01 05:07:06,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:07:06,058 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:07:06,058 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:07:06,142 INFO L130 PetriNetUnfolder]: 89/541 cut-off events. [2023-09-01 05:07:06,142 INFO L131 PetriNetUnfolder]: For 4930/4930 co-relation queries the response was YES. [2023-09-01 05:07:06,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:07:06,143 INFO L208 CegarLoopForPetriNet]: trace histogram [31, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:07:06,143 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:07:06,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:07:06,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1899473315, now seen corresponding path program 1 times [2023-09-01 05:07:06,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:07:06,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985567996] [2023-09-01 05:07:06,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:07:06,143 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:07:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:07:06,191 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:07:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:07:06,240 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:07:06,240 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:07:06,240 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:07:06,240 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2023-09-01 05:07:06,240 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:07:06,241 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:07:06,241 WARN L233 ceAbstractionStarter]: 30 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:07:06,242 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 31 thread instances. [2023-09-01 05:07:06,365 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:07:06,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1490 places, 1645 transitions, 4375 flow [2023-09-01 05:07:07,443 INFO L130 PetriNetUnfolder]: 249/2015 cut-off events. [2023-09-01 05:07:07,444 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-09-01 05:07:07,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2605 conditions, 2015 events. 249/2015 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8528 event pairs, 0 based on Foata normal form. 0/1610 useless extension candidates. Maximal degree in co-relation 2489. Up to 64 conditions per place. [2023-09-01 05:07:07,542 INFO L82 GeneralOperation]: Start removeDead. Operand has 1490 places, 1645 transitions, 4375 flow [2023-09-01 05:07:07,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1490 places, 1645 transitions, 4375 flow [2023-09-01 05:07:07,578 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:07:07,578 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1490 places, 1645 transitions, 4375 flow [2023-09-01 05:07:07,578 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1490 places, 1645 transitions, 4375 flow [2023-09-01 05:07:07,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1490 places, 1645 transitions, 4375 flow [2023-09-01 05:07:08,707 INFO L130 PetriNetUnfolder]: 249/2015 cut-off events. [2023-09-01 05:07:08,707 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-09-01 05:07:08,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2605 conditions, 2015 events. 249/2015 cut-off events. For 5425/5425 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8528 event pairs, 0 based on Foata normal form. 0/1610 useless extension candidates. Maximal degree in co-relation 2489. Up to 64 conditions per place. [2023-09-01 05:07:09,607 INFO L119 LiptonReduction]: Number of co-enabled transitions 2507466 [2023-09-01 05:07:45,750 INFO L134 LiptonReduction]: Checked pairs total: 3886963 [2023-09-01 05:07:45,750 INFO L136 LiptonReduction]: Total number of compositions: 1868 [2023-09-01 05:07:45,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:07:45,752 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:07:45,752 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:07:45,846 INFO L130 PetriNetUnfolder]: 92/559 cut-off events. [2023-09-01 05:07:45,846 INFO L131 PetriNetUnfolder]: For 5425/5425 co-relation queries the response was YES. [2023-09-01 05:07:45,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:07:45,846 INFO L208 CegarLoopForPetriNet]: trace histogram [32, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:07:45,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:07:45,847 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:07:45,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1133106954, now seen corresponding path program 1 times [2023-09-01 05:07:45,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:07:45,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466753538] [2023-09-01 05:07:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:07:45,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:07:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:07:45,893 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:07:45,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:07:45,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:07:45,942 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:07:45,942 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:07:45,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2023-09-01 05:07:45,942 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:07:45,943 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:07:45,943 WARN L233 ceAbstractionStarter]: 31 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:07:45,943 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 32 thread instances. [2023-09-01 05:07:46,056 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:07:46,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1537 places, 1697 transitions, 4546 flow [2023-09-01 05:07:47,284 INFO L130 PetriNetUnfolder]: 257/2079 cut-off events. [2023-09-01 05:07:47,284 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-09-01 05:07:47,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2704 conditions, 2079 events. 257/2079 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8822 event pairs, 0 based on Foata normal form. 0/1661 useless extension candidates. Maximal degree in co-relation 2587. Up to 66 conditions per place. [2023-09-01 05:07:47,395 INFO L82 GeneralOperation]: Start removeDead. Operand has 1537 places, 1697 transitions, 4546 flow [2023-09-01 05:07:47,467 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1537 places, 1697 transitions, 4546 flow [2023-09-01 05:07:47,467 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:07:47,468 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1537 places, 1697 transitions, 4546 flow [2023-09-01 05:07:47,468 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1537 places, 1697 transitions, 4546 flow [2023-09-01 05:07:47,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1537 places, 1697 transitions, 4546 flow [2023-09-01 05:07:48,632 INFO L130 PetriNetUnfolder]: 257/2079 cut-off events. [2023-09-01 05:07:48,632 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-09-01 05:07:48,760 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2704 conditions, 2079 events. 257/2079 cut-off events. For 5952/5952 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 8822 event pairs, 0 based on Foata normal form. 0/1661 useless extension candidates. Maximal degree in co-relation 2587. Up to 66 conditions per place. [2023-09-01 05:07:49,659 INFO L119 LiptonReduction]: Number of co-enabled transitions 2673216 [2023-09-01 05:08:27,756 INFO L134 LiptonReduction]: Checked pairs total: 4323412 [2023-09-01 05:08:27,756 INFO L136 LiptonReduction]: Total number of compositions: 1929 [2023-09-01 05:08:27,758 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:08:27,758 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;@5b54f43b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:08:27,759 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:08:27,858 INFO L130 PetriNetUnfolder]: 95/577 cut-off events. [2023-09-01 05:08:27,858 INFO L131 PetriNetUnfolder]: For 5952/5952 co-relation queries the response was YES. [2023-09-01 05:08:27,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:08:27,858 INFO L208 CegarLoopForPetriNet]: trace histogram [33, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:08:27,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:08:27,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:08:27,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1053636635, now seen corresponding path program 1 times [2023-09-01 05:08:27,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:08:27,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20059711] [2023-09-01 05:08:27,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:08:27,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:08:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:08:27,902 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:08:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:08:27,954 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:08:27,955 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:08:27,955 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:08:27,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2023-09-01 05:08:27,955 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:08:27,956 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:08:27,956 WARN L233 ceAbstractionStarter]: 32 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:08:27,956 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 33 thread instances. [2023-09-01 05:08:28,148 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:08:28,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1584 places, 1749 transitions, 4719 flow [2023-09-01 05:08:29,594 INFO L130 PetriNetUnfolder]: 265/2143 cut-off events. [2023-09-01 05:08:29,595 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-09-01 05:08:29,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2804 conditions, 2143 events. 265/2143 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9105 event pairs, 0 based on Foata normal form. 0/1712 useless extension candidates. Maximal degree in co-relation 2686. Up to 68 conditions per place. [2023-09-01 05:08:29,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 1584 places, 1749 transitions, 4719 flow [2023-09-01 05:08:29,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1584 places, 1749 transitions, 4719 flow [2023-09-01 05:08:29,928 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:08:29,928 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1584 places, 1749 transitions, 4719 flow [2023-09-01 05:08:29,928 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1584 places, 1749 transitions, 4719 flow [2023-09-01 05:08:29,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1584 places, 1749 transitions, 4719 flow [2023-09-01 05:08:31,175 INFO L130 PetriNetUnfolder]: 265/2143 cut-off events. [2023-09-01 05:08:31,175 INFO L131 PetriNetUnfolder]: For 6512/6512 co-relation queries the response was YES. [2023-09-01 05:08:31,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2804 conditions, 2143 events. 265/2143 cut-off events. For 6512/6512 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 9105 event pairs, 0 based on Foata normal form. 0/1712 useless extension candidates. Maximal degree in co-relation 2686. Up to 68 conditions per place. [2023-09-01 05:08:31,852 INFO L119 LiptonReduction]: Number of co-enabled transitions 2844270 Killed by 15