./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-overflow.prp --file ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-2.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/26_stack_cas_longest-2.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 79f59481c49375d27b8409383d6d600e90e5ee29536655deda4d0ae0ca7faefc --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 05:07:15,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 05:07:15,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 05:07:15,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 05:07:15,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 05:07:15,571 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 05:07:15,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 05:07:15,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 05:07:15,578 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 05:07:15,582 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 05:07:15,583 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 05:07:15,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 05:07:15,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 05:07:15,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 05:07:15,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 05:07:15,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 05:07:15,597 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 05:07:15,599 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 05:07:15,601 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 05:07:15,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 05:07:15,607 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 05:07:15,608 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 05:07:15,609 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 05:07:15,610 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 05:07:15,616 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 05:07:15,617 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 05:07:15,617 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 05:07:15,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 05:07:15,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 05:07:15,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 05:07:15,621 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 05:07:15,626 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 05:07:15,627 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 05:07:15,629 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 05:07:15,630 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 05:07:15,630 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 05:07:15,630 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 05:07:15,631 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 05:07:15,631 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 05:07:15,631 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 05:07:15,632 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 05:07:15,643 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-09-01 05:07:15,679 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 05:07:15,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 05:07:15,681 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 05:07:15,681 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 05:07:15,682 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 05:07:15,682 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 05:07:15,682 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 05:07:15,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 05:07:15,683 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 05:07:15,683 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 05:07:15,684 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 05:07:15,684 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-09-01 05:07:15,684 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 05:07:15,684 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 05:07:15,684 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 05:07:15,685 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 05:07:15,685 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 05:07:15,685 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 05:07:15,685 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2023-09-01 05:07:15,685 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 05:07:15,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 05:07:15,686 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 05:07:15,686 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 05:07:15,686 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 05:07:15,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 05:07:15,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 05:07:15,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 05:07:15,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 05:07:15,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 05:07:15,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 05:07:15,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 05:07:15,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 05:07:15,688 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 05:07:15,688 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 05:07:15,688 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 05:07:15,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 05:07:15,688 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 05:07:15,689 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 79f59481c49375d27b8409383d6d600e90e5ee29536655deda4d0ae0ca7faefc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 05:07:16,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 05:07:16,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 05:07:16,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 05:07:16,045 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 05:07:16,046 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 05:07:16,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-2.i [2023-09-01 05:07:17,282 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 05:07:17,528 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 05:07:17,531 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longest-2.i [2023-09-01 05:07:17,551 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c28ede708/f70b9c25abb0492995a08bb2e452f7f1/FLAGde2a9c26b [2023-09-01 05:07:17,569 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c28ede708/f70b9c25abb0492995a08bb2e452f7f1 [2023-09-01 05:07:17,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 05:07:17,572 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 05:07:17,577 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 05:07:17,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 05:07:17,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 05:07:17,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 05:07:17" (1/1) ... [2023-09-01 05:07:17,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43dff023 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:07:17, skipping insertion in model container [2023-09-01 05:07:17,583 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 05:07:17" (1/1) ... [2023-09-01 05:07:17,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 05:07:17,650 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 05:07:17,993 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/26_stack_cas_longest-2.i[31164,31177] [2023-09-01 05:07:18,005 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 05:07:18,016 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 05:07:18,065 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/26_stack_cas_longest-2.i[31164,31177] [2023-09-01 05:07:18,073 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 05:07:18,118 INFO L208 MainTranslator]: Completed translation [2023-09-01 05:07:18,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:07:18 WrapperNode [2023-09-01 05:07:18,119 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 05:07:18,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 05:07:18,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 05:07:18,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 05:07:18,127 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:07:18" (1/1) ... [2023-09-01 05:07:18,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:07:18" (1/1) ... [2023-09-01 05:07:18,189 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 198 [2023-09-01 05:07:18,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 05:07:18,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 05:07:18,192 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 05:07:18,192 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 05:07:18,199 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:07:18" (1/1) ... [2023-09-01 05:07:18,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:07:18" (1/1) ... [2023-09-01 05:07:18,212 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:07:18" (1/1) ... [2023-09-01 05:07:18,212 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:07:18" (1/1) ... [2023-09-01 05:07:18,217 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:07:18" (1/1) ... [2023-09-01 05:07:18,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:07:18" (1/1) ... [2023-09-01 05:07:18,230 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:07:18" (1/1) ... [2023-09-01 05:07:18,232 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:07:18" (1/1) ... [2023-09-01 05:07:18,235 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 05:07:18,235 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 05:07:18,235 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 05:07:18,236 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 05:07:18,236 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:07:18" (1/1) ... [2023-09-01 05:07:18,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 05:07:18,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 05:07:18,278 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 05:07:18,307 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 05:07:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 05:07:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-09-01 05:07:18,317 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-09-01 05:07:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 05:07:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 05:07:18,317 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 05:07:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 05:07:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 05:07:18,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 05:07:18,318 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 05:07:18,320 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 05:07:18,451 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 05:07:18,453 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 05:07:18,777 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 05:07:18,904 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 05:07:18,905 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-09-01 05:07:18,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 05:07:18 BoogieIcfgContainer [2023-09-01 05:07:18,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 05:07:18,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 05:07:18,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 05:07:18,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 05:07:18,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 05:07:17" (1/3) ... [2023-09-01 05:07:18,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0749a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 05:07:18, skipping insertion in model container [2023-09-01 05:07:18,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 05:07:18" (2/3) ... [2023-09-01 05:07:18,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c0749a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 05:07:18, skipping insertion in model container [2023-09-01 05:07:18,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 05:07:18" (3/3) ... [2023-09-01 05:07:18,914 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longest-2.i [2023-09-01 05:07:18,921 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 05:07:18,929 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 05:07:18,929 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-09-01 05:07:18,929 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 05:07:18,992 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:07:19,035 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-09-01 05:07:19,104 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-09-01 05:07:19,104 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 05:07:19,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-09-01 05:07:19,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 133 transitions, 271 flow [2023-09-01 05:07:19,150 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 133 transitions, 271 flow [2023-09-01 05:07:19,154 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:07:19,171 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 133 transitions, 271 flow [2023-09-01 05:07:19,173 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 133 transitions, 271 flow [2023-09-01 05:07:19,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 133 transitions, 271 flow [2023-09-01 05:07:19,233 INFO L130 PetriNetUnfolder]: 11/143 cut-off events. [2023-09-01 05:07:19,235 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 05:07:19,236 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 143 events. 11/143 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 136 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 109. Up to 4 conditions per place. [2023-09-01 05:07:19,238 INFO L119 LiptonReduction]: Number of co-enabled transitions 2522 [2023-09-01 05:07:23,965 INFO L134 LiptonReduction]: Checked pairs total: 3076 [2023-09-01 05:07:23,966 INFO L136 LiptonReduction]: Total number of compositions: 136 [2023-09-01 05:07:23,979 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:07:23,985 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:07:23,985 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:07:23,989 INFO L130 PetriNetUnfolder]: 2/13 cut-off events. [2023-09-01 05:07:23,989 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 05:07:23,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:07:23,990 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 05:07:23,990 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:07:23,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:07:23,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1550590541, now seen corresponding path program 1 times [2023-09-01 05:07:24,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:07:24,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870598704] [2023-09-01 05:07:24,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:07:24,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:07:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:07:24,097 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:07:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:07:24,132 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:07:24,133 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:07:24,134 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:07:24,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 05:07:24,136 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:07:24,139 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:07:24,139 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:07:24,140 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 05:07:24,204 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:07:24,211 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-09-01 05:07:24,271 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-09-01 05:07:24,271 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 05:07:24,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-09-01 05:07:24,276 INFO L82 GeneralOperation]: Start removeDead. Operand has 217 places, 231 transitions, 474 flow [2023-09-01 05:07:24,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 217 places, 231 transitions, 474 flow [2023-09-01 05:07:24,279 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:07:24,279 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 217 places, 231 transitions, 474 flow [2023-09-01 05:07:24,280 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 217 places, 231 transitions, 474 flow [2023-09-01 05:07:24,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 217 places, 231 transitions, 474 flow [2023-09-01 05:07:24,317 INFO L130 PetriNetUnfolder]: 21/253 cut-off events. [2023-09-01 05:07:24,317 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 05:07:24,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263 conditions, 253 events. 21/253 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 535 event pairs, 0 based on Foata normal form. 0/209 useless extension candidates. Maximal degree in co-relation 206. Up to 6 conditions per place. [2023-09-01 05:07:24,331 INFO L119 LiptonReduction]: Number of co-enabled transitions 24056 [2023-09-01 05:07:29,557 INFO L134 LiptonReduction]: Checked pairs total: 65438 [2023-09-01 05:07:29,558 INFO L136 LiptonReduction]: Total number of compositions: 183 [2023-09-01 05:07:29,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:07:29,561 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:07:29,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:07:29,576 INFO L130 PetriNetUnfolder]: 3/31 cut-off events. [2023-09-01 05:07:29,577 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-09-01 05:07:29,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:07:29,577 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 05:07:29,577 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:07:29,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:07:29,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1068023603, now seen corresponding path program 1 times [2023-09-01 05:07:29,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:07:29,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998024514] [2023-09-01 05:07:29,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:07:29,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:07:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:07:29,638 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:07:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:07:29,671 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:07:29,676 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:07:29,677 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:07:29,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 05:07:29,679 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:07:29,681 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:07:29,681 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:07:29,681 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 05:07:29,733 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:07:29,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 329 transitions, 679 flow [2023-09-01 05:07:29,803 INFO L130 PetriNetUnfolder]: 31/363 cut-off events. [2023-09-01 05:07:29,805 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 05:07:29,812 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 363 events. 31/363 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1085 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2023-09-01 05:07:29,812 INFO L82 GeneralOperation]: Start removeDead. Operand has 308 places, 329 transitions, 679 flow [2023-09-01 05:07:29,820 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 308 places, 329 transitions, 679 flow [2023-09-01 05:07:29,820 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:07:29,820 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 308 places, 329 transitions, 679 flow [2023-09-01 05:07:29,821 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 308 places, 329 transitions, 679 flow [2023-09-01 05:07:29,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 308 places, 329 transitions, 679 flow [2023-09-01 05:07:29,897 INFO L130 PetriNetUnfolder]: 31/363 cut-off events. [2023-09-01 05:07:29,898 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 05:07:29,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379 conditions, 363 events. 31/363 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1085 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 303. Up to 8 conditions per place. [2023-09-01 05:07:29,926 INFO L119 LiptonReduction]: Number of co-enabled transitions 64602 [2023-09-01 05:07:36,141 INFO L134 LiptonReduction]: Checked pairs total: 172575 [2023-09-01 05:07:36,141 INFO L136 LiptonReduction]: Total number of compositions: 247 [2023-09-01 05:07:36,144 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:07:36,152 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:07:36,152 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:07:36,158 INFO L130 PetriNetUnfolder]: 4/54 cut-off events. [2023-09-01 05:07:36,159 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-09-01 05:07:36,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:07:36,159 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 05:07:36,160 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:07:36,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:07:36,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1213916751, now seen corresponding path program 1 times [2023-09-01 05:07:36,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:07:36,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616053016] [2023-09-01 05:07:36,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:07:36,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:07:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:07:36,204 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:07:36,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:07:36,245 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:07:36,245 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:07:36,246 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:07:36,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 05:07:36,246 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:07:36,247 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:07:36,247 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:07:36,247 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 05:07:36,316 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:07:36,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 427 transitions, 886 flow [2023-09-01 05:07:36,403 INFO L130 PetriNetUnfolder]: 41/473 cut-off events. [2023-09-01 05:07:36,404 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 05:07:36,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 473 events. 41/473 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1679 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 400. Up to 10 conditions per place. [2023-09-01 05:07:36,416 INFO L82 GeneralOperation]: Start removeDead. Operand has 399 places, 427 transitions, 886 flow [2023-09-01 05:07:36,422 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 427 transitions, 886 flow [2023-09-01 05:07:36,422 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:07:36,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 399 places, 427 transitions, 886 flow [2023-09-01 05:07:36,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 399 places, 427 transitions, 886 flow [2023-09-01 05:07:36,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 427 transitions, 886 flow [2023-09-01 05:07:36,521 INFO L130 PetriNetUnfolder]: 41/473 cut-off events. [2023-09-01 05:07:36,522 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 05:07:36,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 496 conditions, 473 events. 41/473 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1679 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 400. Up to 10 conditions per place. [2023-09-01 05:07:36,558 INFO L119 LiptonReduction]: Number of co-enabled transitions 124160 [2023-09-01 05:07:44,600 INFO L134 LiptonReduction]: Checked pairs total: 353281 [2023-09-01 05:07:44,601 INFO L136 LiptonReduction]: Total number of compositions: 325 [2023-09-01 05:07:44,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:07:44,603 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:07:44,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:07:44,612 INFO L130 PetriNetUnfolder]: 8/99 cut-off events. [2023-09-01 05:07:44,613 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-09-01 05:07:44,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:07:44,613 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 05:07:44,613 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:07:44,614 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:07:44,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1783804678, now seen corresponding path program 1 times [2023-09-01 05:07:44,614 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:07:44,614 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33017716] [2023-09-01 05:07:44,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:07:44,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:07:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:07:44,648 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:07:44,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:07:44,684 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:07:44,688 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:07:44,689 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:07:44,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 05:07:44,689 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:07:44,690 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:07:44,690 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:07:44,690 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 05:07:44,755 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:07:44,760 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 490 places, 525 transitions, 1095 flow [2023-09-01 05:07:44,916 INFO L130 PetriNetUnfolder]: 51/583 cut-off events. [2023-09-01 05:07:44,916 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 05:07:44,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 583 events. 51/583 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2296 event pairs, 0 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 497. Up to 12 conditions per place. [2023-09-01 05:07:44,931 INFO L82 GeneralOperation]: Start removeDead. Operand has 490 places, 525 transitions, 1095 flow [2023-09-01 05:07:44,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 490 places, 525 transitions, 1095 flow [2023-09-01 05:07:44,938 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:07:44,938 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 490 places, 525 transitions, 1095 flow [2023-09-01 05:07:44,938 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 490 places, 525 transitions, 1095 flow [2023-09-01 05:07:44,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 490 places, 525 transitions, 1095 flow [2023-09-01 05:07:45,078 INFO L130 PetriNetUnfolder]: 51/583 cut-off events. [2023-09-01 05:07:45,078 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 05:07:45,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 614 conditions, 583 events. 51/583 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 2296 event pairs, 0 based on Foata normal form. 0/476 useless extension candidates. Maximal degree in co-relation 497. Up to 12 conditions per place. [2023-09-01 05:07:45,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 202730 [2023-09-01 05:07:55,333 INFO L134 LiptonReduction]: Checked pairs total: 577123 [2023-09-01 05:07:55,333 INFO L136 LiptonReduction]: Total number of compositions: 402 [2023-09-01 05:07:55,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:07:55,335 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:07:55,336 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:07:55,352 INFO L130 PetriNetUnfolder]: 16/150 cut-off events. [2023-09-01 05:07:55,352 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-09-01 05:07:55,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:07:55,352 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:07:55,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:07:55,353 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:07:55,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1335391351, now seen corresponding path program 1 times [2023-09-01 05:07:55,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:07:55,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936530873] [2023-09-01 05:07:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:07:55,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:07:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:07:55,402 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:07:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:07:55,427 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:07:55,430 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:07:55,430 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:07:55,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 05:07:55,431 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:07:55,433 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:07:55,433 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:07:55,434 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 05:07:55,509 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:07:55,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 581 places, 623 transitions, 1306 flow [2023-09-01 05:07:55,717 INFO L130 PetriNetUnfolder]: 61/693 cut-off events. [2023-09-01 05:07:55,717 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 05:07:55,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 693 events. 61/693 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2979 event pairs, 0 based on Foata normal form. 0/565 useless extension candidates. Maximal degree in co-relation 602. Up to 14 conditions per place. [2023-09-01 05:07:55,740 INFO L82 GeneralOperation]: Start removeDead. Operand has 581 places, 623 transitions, 1306 flow [2023-09-01 05:07:55,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 581 places, 623 transitions, 1306 flow [2023-09-01 05:07:55,751 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:07:55,751 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 581 places, 623 transitions, 1306 flow [2023-09-01 05:07:55,752 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 581 places, 623 transitions, 1306 flow [2023-09-01 05:07:55,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 581 places, 623 transitions, 1306 flow [2023-09-01 05:07:55,948 INFO L130 PetriNetUnfolder]: 61/693 cut-off events. [2023-09-01 05:07:55,948 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 05:07:55,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733 conditions, 693 events. 61/693 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2979 event pairs, 0 based on Foata normal form. 0/565 useless extension candidates. Maximal degree in co-relation 602. Up to 14 conditions per place. [2023-09-01 05:07:56,020 INFO L119 LiptonReduction]: Number of co-enabled transitions 300312 [2023-09-01 05:08:07,514 INFO L134 LiptonReduction]: Checked pairs total: 873712 [2023-09-01 05:08:07,514 INFO L136 LiptonReduction]: Total number of compositions: 477 [2023-09-01 05:08:07,516 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:08:07,517 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:08:07,517 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:08:07,539 INFO L130 PetriNetUnfolder]: 22/199 cut-off events. [2023-09-01 05:08:07,540 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-09-01 05:08:07,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:08:07,540 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:08:07,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:08:07,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:08:07,541 INFO L85 PathProgramCache]: Analyzing trace with hash -13033532, now seen corresponding path program 1 times [2023-09-01 05:08:07,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:08:07,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195701775] [2023-09-01 05:08:07,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:08:07,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:08:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:08:07,561 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:08:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:08:07,579 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:08:07,580 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:08:07,580 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:08:07,580 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 05:08:07,580 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:08:07,581 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:08:07,581 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:08:07,581 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 05:08:07,669 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:08:07,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 672 places, 721 transitions, 1519 flow [2023-09-01 05:08:07,919 INFO L130 PetriNetUnfolder]: 71/803 cut-off events. [2023-09-01 05:08:07,920 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 05:08:07,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 803 events. 71/803 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3649 event pairs, 0 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 719. Up to 16 conditions per place. [2023-09-01 05:08:07,947 INFO L82 GeneralOperation]: Start removeDead. Operand has 672 places, 721 transitions, 1519 flow [2023-09-01 05:08:07,955 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 672 places, 721 transitions, 1519 flow [2023-09-01 05:08:07,956 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:08:07,956 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 672 places, 721 transitions, 1519 flow [2023-09-01 05:08:07,956 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 672 places, 721 transitions, 1519 flow [2023-09-01 05:08:07,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 672 places, 721 transitions, 1519 flow [2023-09-01 05:08:08,169 INFO L130 PetriNetUnfolder]: 71/803 cut-off events. [2023-09-01 05:08:08,169 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 05:08:08,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 853 conditions, 803 events. 71/803 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3649 event pairs, 0 based on Foata normal form. 0/654 useless extension candidates. Maximal degree in co-relation 719. Up to 16 conditions per place. [2023-09-01 05:08:08,283 INFO L119 LiptonReduction]: Number of co-enabled transitions 416906 [2023-09-01 05:08:21,399 INFO L134 LiptonReduction]: Checked pairs total: 1191750 [2023-09-01 05:08:21,400 INFO L136 LiptonReduction]: Total number of compositions: 550 [2023-09-01 05:08:21,402 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:08:21,402 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:08:21,403 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:08:21,434 INFO L130 PetriNetUnfolder]: 30/250 cut-off events. [2023-09-01 05:08:21,434 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-09-01 05:08:21,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:08:21,435 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:08:21,435 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:08:21,435 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:08:21,435 INFO L85 PathProgramCache]: Analyzing trace with hash 1927094219, now seen corresponding path program 1 times [2023-09-01 05:08:21,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:08:21,436 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773521413] [2023-09-01 05:08:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:08:21,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:08:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:08:21,474 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:08:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:08:21,493 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:08:21,494 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:08:21,494 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:08:21,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 05:08:21,494 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:08:21,495 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:08:21,495 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:08:21,495 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 05:08:21,590 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:08:21,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 763 places, 819 transitions, 1734 flow [2023-09-01 05:08:21,861 INFO L130 PetriNetUnfolder]: 81/913 cut-off events. [2023-09-01 05:08:21,861 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 05:08:21,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 913 events. 81/913 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4325 event pairs, 0 based on Foata normal form. 0/743 useless extension candidates. Maximal degree in co-relation 837. Up to 18 conditions per place. [2023-09-01 05:08:21,901 INFO L82 GeneralOperation]: Start removeDead. Operand has 763 places, 819 transitions, 1734 flow [2023-09-01 05:08:21,915 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 763 places, 819 transitions, 1734 flow [2023-09-01 05:08:21,915 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:08:21,915 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 763 places, 819 transitions, 1734 flow [2023-09-01 05:08:21,916 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 763 places, 819 transitions, 1734 flow [2023-09-01 05:08:21,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 763 places, 819 transitions, 1734 flow [2023-09-01 05:08:22,204 INFO L130 PetriNetUnfolder]: 81/913 cut-off events. [2023-09-01 05:08:22,205 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 05:08:22,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 913 events. 81/913 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4325 event pairs, 0 based on Foata normal form. 0/743 useless extension candidates. Maximal degree in co-relation 837. Up to 18 conditions per place. [2023-09-01 05:08:22,362 INFO L119 LiptonReduction]: Number of co-enabled transitions 552512 [2023-09-01 05:08:37,494 INFO L134 LiptonReduction]: Checked pairs total: 1608532 [2023-09-01 05:08:37,494 INFO L136 LiptonReduction]: Total number of compositions: 624 [2023-09-01 05:08:37,496 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:08:37,496 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:08:37,497 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:08:37,541 INFO L130 PetriNetUnfolder]: 37/305 cut-off events. [2023-09-01 05:08:37,542 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-09-01 05:08:37,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:08:37,542 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:08:37,542 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:08:37,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:08:37,543 INFO L85 PathProgramCache]: Analyzing trace with hash 84623084, now seen corresponding path program 1 times [2023-09-01 05:08:37,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:08:37,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835447551] [2023-09-01 05:08:37,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:08:37,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:08:37,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:08:37,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:08:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:08:37,589 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:08:37,590 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:08:37,590 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:08:37,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 05:08:37,590 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:08:37,591 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:08:37,591 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:08:37,591 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 05:08:37,693 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:08:37,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 854 places, 917 transitions, 1951 flow [2023-09-01 05:08:38,008 INFO L130 PetriNetUnfolder]: 91/1023 cut-off events. [2023-09-01 05:08:38,009 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 05:08:38,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 1023 events. 91/1023 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5059 event pairs, 0 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 956. Up to 20 conditions per place. [2023-09-01 05:08:38,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 854 places, 917 transitions, 1951 flow [2023-09-01 05:08:38,066 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 854 places, 917 transitions, 1951 flow [2023-09-01 05:08:38,067 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:08:38,067 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 854 places, 917 transitions, 1951 flow [2023-09-01 05:08:38,067 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 854 places, 917 transitions, 1951 flow [2023-09-01 05:08:38,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 854 places, 917 transitions, 1951 flow [2023-09-01 05:08:38,433 INFO L130 PetriNetUnfolder]: 91/1023 cut-off events. [2023-09-01 05:08:38,434 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 05:08:38,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1096 conditions, 1023 events. 91/1023 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5059 event pairs, 0 based on Foata normal form. 0/832 useless extension candidates. Maximal degree in co-relation 956. Up to 20 conditions per place. [2023-09-01 05:08:38,636 INFO L119 LiptonReduction]: Number of co-enabled transitions 707130 [2023-09-01 05:08:55,394 INFO L134 LiptonReduction]: Checked pairs total: 2282311 [2023-09-01 05:08:55,394 INFO L136 LiptonReduction]: Total number of compositions: 704 [2023-09-01 05:08:55,396 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:08:55,396 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:08:55,396 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:08:55,443 INFO L130 PetriNetUnfolder]: 44/351 cut-off events. [2023-09-01 05:08:55,444 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-09-01 05:08:55,444 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:08:55,444 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:08:55,444 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:08:55,444 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:08:55,445 INFO L85 PathProgramCache]: Analyzing trace with hash -1043776736, now seen corresponding path program 1 times [2023-09-01 05:08:55,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:08:55,445 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275019064] [2023-09-01 05:08:55,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:08:55,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:08:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:08:55,475 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:08:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:08:55,508 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:08:55,509 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:08:55,509 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:08:55,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 05:08:55,509 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:08:55,512 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:08:55,512 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:08:55,512 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 05:08:55,629 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:08:55,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 945 places, 1015 transitions, 2170 flow [2023-09-01 05:08:56,121 INFO L130 PetriNetUnfolder]: 101/1133 cut-off events. [2023-09-01 05:08:56,122 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 05:08:56,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 1133 events. 101/1133 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5728 event pairs, 0 based on Foata normal form. 0/921 useless extension candidates. Maximal degree in co-relation 1076. Up to 22 conditions per place. [2023-09-01 05:08:56,177 INFO L82 GeneralOperation]: Start removeDead. Operand has 945 places, 1015 transitions, 2170 flow [2023-09-01 05:08:56,189 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 945 places, 1015 transitions, 2170 flow [2023-09-01 05:08:56,189 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:08:56,189 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 945 places, 1015 transitions, 2170 flow [2023-09-01 05:08:56,189 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 945 places, 1015 transitions, 2170 flow [2023-09-01 05:08:56,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 945 places, 1015 transitions, 2170 flow [2023-09-01 05:08:56,588 INFO L130 PetriNetUnfolder]: 101/1133 cut-off events. [2023-09-01 05:08:56,588 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 05:08:56,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1219 conditions, 1133 events. 101/1133 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 5728 event pairs, 0 based on Foata normal form. 0/921 useless extension candidates. Maximal degree in co-relation 1076. Up to 22 conditions per place. [2023-09-01 05:08:56,757 INFO L119 LiptonReduction]: Number of co-enabled transitions 880760 [2023-09-01 05:09:15,051 INFO L134 LiptonReduction]: Checked pairs total: 2566361 [2023-09-01 05:09:15,052 INFO L136 LiptonReduction]: Total number of compositions: 776 [2023-09-01 05:09:15,054 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:09:15,054 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:09:15,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:09:15,123 INFO L130 PetriNetUnfolder]: 51/402 cut-off events. [2023-09-01 05:09:15,124 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-09-01 05:09:15,124 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:09:15,124 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:09:15,124 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:09:15,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:09:15,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1380839406, now seen corresponding path program 1 times [2023-09-01 05:09:15,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:09:15,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263737491] [2023-09-01 05:09:15,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:09:15,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:09:15,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:09:15,169 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:09:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:09:15,197 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:09:15,197 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:09:15,197 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:09:15,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 05:09:15,198 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:09:15,198 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:09:15,198 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:09:15,198 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 05:09:15,332 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:09:15,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1036 places, 1113 transitions, 2391 flow [2023-09-01 05:09:15,905 INFO L130 PetriNetUnfolder]: 111/1243 cut-off events. [2023-09-01 05:09:15,905 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 05:09:15,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1343 conditions, 1243 events. 111/1243 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6400 event pairs, 0 based on Foata normal form. 0/1010 useless extension candidates. Maximal degree in co-relation 1199. Up to 24 conditions per place. [2023-09-01 05:09:15,970 INFO L82 GeneralOperation]: Start removeDead. Operand has 1036 places, 1113 transitions, 2391 flow [2023-09-01 05:09:15,987 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1036 places, 1113 transitions, 2391 flow [2023-09-01 05:09:15,988 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:09:15,988 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1036 places, 1113 transitions, 2391 flow [2023-09-01 05:09:15,988 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1036 places, 1113 transitions, 2391 flow [2023-09-01 05:09:15,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1036 places, 1113 transitions, 2391 flow [2023-09-01 05:09:16,495 INFO L130 PetriNetUnfolder]: 111/1243 cut-off events. [2023-09-01 05:09:16,495 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 05:09:16,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1343 conditions, 1243 events. 111/1243 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 6400 event pairs, 0 based on Foata normal form. 0/1010 useless extension candidates. Maximal degree in co-relation 1199. Up to 24 conditions per place. [2023-09-01 05:09:16,668 INFO L119 LiptonReduction]: Number of co-enabled transitions 1073402 [2023-09-01 05:09:38,165 INFO L134 LiptonReduction]: Checked pairs total: 3507382 [2023-09-01 05:09:38,166 INFO L136 LiptonReduction]: Total number of compositions: 849 [2023-09-01 05:09:38,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:09:38,168 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:09:38,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:09:38,239 INFO L130 PetriNetUnfolder]: 58/455 cut-off events. [2023-09-01 05:09:38,239 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-09-01 05:09:38,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:09:38,239 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 05:09:38,240 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:09:38,240 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:09:38,240 INFO L85 PathProgramCache]: Analyzing trace with hash -361810310, now seen corresponding path program 1 times [2023-09-01 05:09:38,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:09:38,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316269739] [2023-09-01 05:09:38,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:09:38,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:09:38,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:09:38,270 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:09:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:09:38,297 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:09:38,298 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:09:38,298 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:09:38,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 05:09:38,298 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:09:38,299 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:09:38,299 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:09:38,299 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 05:09:38,415 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:09:38,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1127 places, 1211 transitions, 2614 flow [2023-09-01 05:09:38,954 INFO L130 PetriNetUnfolder]: 121/1353 cut-off events. [2023-09-01 05:09:38,954 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 05:09:39,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 1353 events. 121/1353 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 7070 event pairs, 0 based on Foata normal form. 0/1099 useless extension candidates. Maximal degree in co-relation 1323. Up to 26 conditions per place. [2023-09-01 05:09:39,045 INFO L82 GeneralOperation]: Start removeDead. Operand has 1127 places, 1211 transitions, 2614 flow [2023-09-01 05:09:39,065 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1127 places, 1211 transitions, 2614 flow [2023-09-01 05:09:39,066 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:09:39,066 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1127 places, 1211 transitions, 2614 flow [2023-09-01 05:09:39,066 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1127 places, 1211 transitions, 2614 flow [2023-09-01 05:09:39,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1127 places, 1211 transitions, 2614 flow [2023-09-01 05:09:39,587 INFO L130 PetriNetUnfolder]: 121/1353 cut-off events. [2023-09-01 05:09:39,587 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 05:09:39,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1468 conditions, 1353 events. 121/1353 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 7070 event pairs, 0 based on Foata normal form. 0/1099 useless extension candidates. Maximal degree in co-relation 1323. Up to 26 conditions per place. [2023-09-01 05:09:39,872 INFO L119 LiptonReduction]: Number of co-enabled transitions 1285056 [2023-09-01 05:10:02,654 INFO L134 LiptonReduction]: Checked pairs total: 4170663 [2023-09-01 05:10:02,654 INFO L136 LiptonReduction]: Total number of compositions: 919 [2023-09-01 05:10:02,655 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:10:02,655 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:10:02,656 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:10:02,729 INFO L130 PetriNetUnfolder]: 64/499 cut-off events. [2023-09-01 05:10:02,729 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-09-01 05:10:02,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:10:02,730 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 05:10:02,730 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:10:02,730 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:10:02,730 INFO L85 PathProgramCache]: Analyzing trace with hash -1008849469, now seen corresponding path program 1 times [2023-09-01 05:10:02,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:10:02,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75436772] [2023-09-01 05:10:02,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:10:02,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:10:02,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:10:02,761 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:10:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:10:02,812 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:10:02,812 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:10:02,812 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:10:02,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 05:10:02,813 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:10:02,815 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:10:02,815 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:10:02,815 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 05:10:02,949 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:10:02,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1218 places, 1309 transitions, 2839 flow [2023-09-01 05:10:03,604 INFO L130 PetriNetUnfolder]: 131/1463 cut-off events. [2023-09-01 05:10:03,604 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 05:10:03,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 1463 events. 131/1463 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 7779 event pairs, 0 based on Foata normal form. 0/1188 useless extension candidates. Maximal degree in co-relation 1448. Up to 28 conditions per place. [2023-09-01 05:10:03,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 1218 places, 1309 transitions, 2839 flow [2023-09-01 05:10:03,693 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1218 places, 1309 transitions, 2839 flow [2023-09-01 05:10:03,693 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:10:03,693 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1218 places, 1309 transitions, 2839 flow [2023-09-01 05:10:03,693 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1218 places, 1309 transitions, 2839 flow [2023-09-01 05:10:03,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1218 places, 1309 transitions, 2839 flow [2023-09-01 05:10:04,245 INFO L130 PetriNetUnfolder]: 131/1463 cut-off events. [2023-09-01 05:10:04,246 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 05:10:04,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1594 conditions, 1463 events. 131/1463 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 7779 event pairs, 0 based on Foata normal form. 0/1188 useless extension candidates. Maximal degree in co-relation 1448. Up to 28 conditions per place. [2023-09-01 05:10:04,703 INFO L119 LiptonReduction]: Number of co-enabled transitions 1515722 [2023-09-01 05:10:28,627 INFO L134 LiptonReduction]: Checked pairs total: 4415961 [2023-09-01 05:10:28,627 INFO L136 LiptonReduction]: Total number of compositions: 980 [2023-09-01 05:10:28,629 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:10:28,629 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:10:28,629 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:10:28,719 INFO L130 PetriNetUnfolder]: 72/553 cut-off events. [2023-09-01 05:10:28,719 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-09-01 05:10:28,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:10:28,719 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 05:10:28,719 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:10:28,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:10:28,720 INFO L85 PathProgramCache]: Analyzing trace with hash -357850694, now seen corresponding path program 1 times [2023-09-01 05:10:28,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:10:28,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771948938] [2023-09-01 05:10:28,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:10:28,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:10:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:10:28,752 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:10:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:10:28,783 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:10:28,783 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:10:28,783 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:10:28,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 05:10:28,784 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:10:28,784 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:10:28,784 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:10:28,784 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 05:10:28,944 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:10:28,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1309 places, 1407 transitions, 3066 flow [2023-09-01 05:10:29,638 INFO L130 PetriNetUnfolder]: 141/1573 cut-off events. [2023-09-01 05:10:29,638 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 05:10:29,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 1573 events. 141/1573 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 8445 event pairs, 0 based on Foata normal form. 0/1277 useless extension candidates. Maximal degree in co-relation 1574. Up to 30 conditions per place. [2023-09-01 05:10:29,735 INFO L82 GeneralOperation]: Start removeDead. Operand has 1309 places, 1407 transitions, 3066 flow [2023-09-01 05:10:29,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1309 places, 1407 transitions, 3066 flow [2023-09-01 05:10:29,756 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:10:29,756 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1309 places, 1407 transitions, 3066 flow [2023-09-01 05:10:29,756 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1309 places, 1407 transitions, 3066 flow [2023-09-01 05:10:29,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1309 places, 1407 transitions, 3066 flow [2023-09-01 05:10:30,451 INFO L130 PetriNetUnfolder]: 141/1573 cut-off events. [2023-09-01 05:10:30,451 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 05:10:30,526 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 1573 events. 141/1573 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 8445 event pairs, 0 based on Foata normal form. 0/1277 useless extension candidates. Maximal degree in co-relation 1574. Up to 30 conditions per place. [2023-09-01 05:10:30,744 INFO L119 LiptonReduction]: Number of co-enabled transitions 1765400 [2023-09-01 05:10:58,119 INFO L134 LiptonReduction]: Checked pairs total: 5183324 [2023-09-01 05:10:58,119 INFO L136 LiptonReduction]: Total number of compositions: 1068 [2023-09-01 05:10:58,121 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:10:58,121 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:10:58,121 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:10:58,226 INFO L130 PetriNetUnfolder]: 78/608 cut-off events. [2023-09-01 05:10:58,226 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-09-01 05:10:58,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:10:58,226 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 05:10:58,226 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:10:58,227 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:10:58,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1878621585, now seen corresponding path program 1 times [2023-09-01 05:10:58,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:10:58,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887510192] [2023-09-01 05:10:58,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:10:58,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:10:58,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:10:58,257 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:10:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:10:58,292 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:10:58,292 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:10:58,292 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:10:58,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-09-01 05:10:58,293 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:10:58,293 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:10:58,293 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:10:58,293 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-09-01 05:10:58,441 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:10:58,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1400 places, 1505 transitions, 3295 flow [2023-09-01 05:10:59,175 INFO L130 PetriNetUnfolder]: 151/1683 cut-off events. [2023-09-01 05:10:59,175 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 05:10:59,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 1683 events. 151/1683 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 9142 event pairs, 0 based on Foata normal form. 0/1366 useless extension candidates. Maximal degree in co-relation 1701. Up to 32 conditions per place. [2023-09-01 05:10:59,283 INFO L82 GeneralOperation]: Start removeDead. Operand has 1400 places, 1505 transitions, 3295 flow [2023-09-01 05:10:59,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1400 places, 1505 transitions, 3295 flow [2023-09-01 05:10:59,305 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:10:59,305 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1400 places, 1505 transitions, 3295 flow [2023-09-01 05:10:59,306 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1400 places, 1505 transitions, 3295 flow [2023-09-01 05:10:59,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1400 places, 1505 transitions, 3295 flow [2023-09-01 05:11:00,149 INFO L130 PetriNetUnfolder]: 151/1683 cut-off events. [2023-09-01 05:11:00,149 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 05:11:00,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1849 conditions, 1683 events. 151/1683 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 9142 event pairs, 0 based on Foata normal form. 0/1366 useless extension candidates. Maximal degree in co-relation 1701. Up to 32 conditions per place. [2023-09-01 05:11:00,569 INFO L119 LiptonReduction]: Number of co-enabled transitions 2034090 [2023-09-01 05:11:29,328 INFO L134 LiptonReduction]: Checked pairs total: 6592358 [2023-09-01 05:11:29,328 INFO L136 LiptonReduction]: Total number of compositions: 1137 [2023-09-01 05:11:29,331 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:11:29,331 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:11:29,331 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:11:29,521 INFO L130 PetriNetUnfolder]: 85/652 cut-off events. [2023-09-01 05:11:29,521 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-09-01 05:11:29,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:11:29,521 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 05:11:29,522 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:11:29,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:11:29,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1862721328, now seen corresponding path program 1 times [2023-09-01 05:11:29,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:11:29,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750953132] [2023-09-01 05:11:29,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:11:29,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:11:29,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:11:29,624 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:11:29,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:11:29,666 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:11:29,666 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:11:29,668 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:11:29,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-09-01 05:11:29,668 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:11:29,668 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:11:29,668 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:11:29,669 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-09-01 05:11:29,906 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:11:29,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1491 places, 1603 transitions, 3526 flow [2023-09-01 05:11:31,127 INFO L130 PetriNetUnfolder]: 161/1793 cut-off events. [2023-09-01 05:11:31,127 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 05:11:31,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1978 conditions, 1793 events. 161/1793 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 9844 event pairs, 0 based on Foata normal form. 0/1455 useless extension candidates. Maximal degree in co-relation 1829. Up to 34 conditions per place. [2023-09-01 05:11:31,223 INFO L82 GeneralOperation]: Start removeDead. Operand has 1491 places, 1603 transitions, 3526 flow [2023-09-01 05:11:31,245 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1491 places, 1603 transitions, 3526 flow [2023-09-01 05:11:31,245 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:11:31,246 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1491 places, 1603 transitions, 3526 flow [2023-09-01 05:11:31,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1491 places, 1603 transitions, 3526 flow [2023-09-01 05:11:31,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1491 places, 1603 transitions, 3526 flow [2023-09-01 05:11:32,067 INFO L130 PetriNetUnfolder]: 161/1793 cut-off events. [2023-09-01 05:11:32,067 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 05:11:32,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1978 conditions, 1793 events. 161/1793 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 9844 event pairs, 0 based on Foata normal form. 0/1455 useless extension candidates. Maximal degree in co-relation 1829. Up to 34 conditions per place. [2023-09-01 05:11:32,863 INFO L119 LiptonReduction]: Number of co-enabled transitions 2321792 [2023-09-01 05:12:04,299 INFO L134 LiptonReduction]: Checked pairs total: 7579547 [2023-09-01 05:12:04,299 INFO L136 LiptonReduction]: Total number of compositions: 1222 [2023-09-01 05:12:04,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:12:04,301 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:12:04,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:12:04,439 INFO L130 PetriNetUnfolder]: 92/705 cut-off events. [2023-09-01 05:12:04,440 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-09-01 05:12:04,440 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:12:04,440 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 05:12:04,440 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:12:04,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:12:04,441 INFO L85 PathProgramCache]: Analyzing trace with hash -1636104487, now seen corresponding path program 1 times [2023-09-01 05:12:04,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:12:04,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897222673] [2023-09-01 05:12:04,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:12:04,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:12:04,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:12:04,481 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:12:04,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:12:04,524 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:12:04,524 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:12:04,524 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:12:04,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-09-01 05:12:04,524 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:12:04,525 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:12:04,525 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:12:04,525 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-09-01 05:12:04,714 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:12:04,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1582 places, 1701 transitions, 3759 flow [2023-09-01 05:12:05,980 INFO L130 PetriNetUnfolder]: 171/1903 cut-off events. [2023-09-01 05:12:05,980 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 05:12:06,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2108 conditions, 1903 events. 171/1903 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 10500 event pairs, 0 based on Foata normal form. 0/1544 useless extension candidates. Maximal degree in co-relation 1958. Up to 36 conditions per place. [2023-09-01 05:12:06,085 INFO L82 GeneralOperation]: Start removeDead. Operand has 1582 places, 1701 transitions, 3759 flow [2023-09-01 05:12:06,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1582 places, 1701 transitions, 3759 flow [2023-09-01 05:12:06,112 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:12:06,113 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1582 places, 1701 transitions, 3759 flow [2023-09-01 05:12:06,113 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1582 places, 1701 transitions, 3759 flow [2023-09-01 05:12:06,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1582 places, 1701 transitions, 3759 flow [2023-09-01 05:12:07,293 INFO L130 PetriNetUnfolder]: 171/1903 cut-off events. [2023-09-01 05:12:07,293 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 05:12:07,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2108 conditions, 1903 events. 171/1903 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 10500 event pairs, 0 based on Foata normal form. 0/1544 useless extension candidates. Maximal degree in co-relation 1958. Up to 36 conditions per place. [2023-09-01 05:12:07,979 INFO L119 LiptonReduction]: Number of co-enabled transitions 2628506 [2023-09-01 05:12:42,763 INFO L134 LiptonReduction]: Checked pairs total: 8522192 [2023-09-01 05:12:42,763 INFO L136 LiptonReduction]: Total number of compositions: 1282 [2023-09-01 05:12:42,765 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:12:42,766 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:12:42,766 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:12:42,983 INFO L130 PetriNetUnfolder]: 100/762 cut-off events. [2023-09-01 05:12:42,983 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-09-01 05:12:42,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:12:42,983 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 05:12:42,984 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:12:42,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:12:42,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1746100533, now seen corresponding path program 1 times [2023-09-01 05:12:42,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:12:42,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634717990] [2023-09-01 05:12:42,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:12:42,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:12:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:12:43,035 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:12:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:12:43,085 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:12:43,086 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:12:43,086 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:12:43,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-09-01 05:12:43,086 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:12:43,087 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:12:43,087 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:12:43,087 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-09-01 05:12:43,271 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:12:43,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1673 places, 1799 transitions, 3994 flow [2023-09-01 05:12:44,590 INFO L130 PetriNetUnfolder]: 181/2013 cut-off events. [2023-09-01 05:12:44,591 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 05:12:44,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 2013 events. 181/2013 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 11209 event pairs, 0 based on Foata normal form. 0/1633 useless extension candidates. Maximal degree in co-relation 2088. Up to 38 conditions per place. [2023-09-01 05:12:44,714 INFO L82 GeneralOperation]: Start removeDead. Operand has 1673 places, 1799 transitions, 3994 flow [2023-09-01 05:12:44,741 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1673 places, 1799 transitions, 3994 flow [2023-09-01 05:12:44,742 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:12:44,742 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1673 places, 1799 transitions, 3994 flow [2023-09-01 05:12:44,742 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1673 places, 1799 transitions, 3994 flow [2023-09-01 05:12:44,742 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1673 places, 1799 transitions, 3994 flow [2023-09-01 05:12:45,978 INFO L130 PetriNetUnfolder]: 181/2013 cut-off events. [2023-09-01 05:12:45,978 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 05:12:46,104 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2239 conditions, 2013 events. 181/2013 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 11209 event pairs, 0 based on Foata normal form. 0/1633 useless extension candidates. Maximal degree in co-relation 2088. Up to 38 conditions per place. [2023-09-01 05:12:46,708 INFO L119 LiptonReduction]: Number of co-enabled transitions 2954232 [2023-09-01 05:13:22,650 INFO L134 LiptonReduction]: Checked pairs total: 8571900 [2023-09-01 05:13:22,651 INFO L136 LiptonReduction]: Total number of compositions: 1351 [2023-09-01 05:13:22,652 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:13:22,653 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:13:22,653 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:13:22,855 INFO L130 PetriNetUnfolder]: 107/809 cut-off events. [2023-09-01 05:13:22,855 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-09-01 05:13:22,856 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:13:22,856 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 05:13:22,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:13:22,856 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:13:22,856 INFO L85 PathProgramCache]: Analyzing trace with hash 596187427, now seen corresponding path program 1 times [2023-09-01 05:13:22,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:13:22,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192346566] [2023-09-01 05:13:22,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:13:22,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:13:22,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:13:22,897 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:13:22,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:13:22,945 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:13:22,946 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:13:22,946 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:13:22,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-09-01 05:13:22,946 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:13:22,946 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:13:22,947 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:13:22,947 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-09-01 05:13:23,141 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:13:23,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1764 places, 1897 transitions, 4231 flow [2023-09-01 05:13:24,693 INFO L130 PetriNetUnfolder]: 191/2123 cut-off events. [2023-09-01 05:13:24,693 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 05:13:24,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 2123 events. 191/2123 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 11858 event pairs, 0 based on Foata normal form. 0/1722 useless extension candidates. Maximal degree in co-relation 2219. Up to 40 conditions per place. [2023-09-01 05:13:24,838 INFO L82 GeneralOperation]: Start removeDead. Operand has 1764 places, 1897 transitions, 4231 flow [2023-09-01 05:13:24,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1764 places, 1897 transitions, 4231 flow [2023-09-01 05:13:24,870 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:13:24,870 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1764 places, 1897 transitions, 4231 flow [2023-09-01 05:13:24,871 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1764 places, 1897 transitions, 4231 flow [2023-09-01 05:13:24,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1764 places, 1897 transitions, 4231 flow [2023-09-01 05:13:26,547 INFO L130 PetriNetUnfolder]: 191/2123 cut-off events. [2023-09-01 05:13:26,548 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 05:13:26,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 2123 events. 191/2123 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 11858 event pairs, 0 based on Foata normal form. 0/1722 useless extension candidates. Maximal degree in co-relation 2219. Up to 40 conditions per place. [2023-09-01 05:13:27,534 INFO L119 LiptonReduction]: Number of co-enabled transitions 3298970 [2023-09-01 05:14:05,689 INFO L134 LiptonReduction]: Checked pairs total: 9540040 [2023-09-01 05:14:05,689 INFO L136 LiptonReduction]: Total number of compositions: 1435 [2023-09-01 05:14:05,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:14:05,696 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:14:05,696 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:14:05,899 INFO L130 PetriNetUnfolder]: 114/856 cut-off events. [2023-09-01 05:14:05,900 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-09-01 05:14:05,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:14:05,900 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 05:14:05,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:14:05,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:14:05,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1028835156, now seen corresponding path program 1 times [2023-09-01 05:14:05,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:14:05,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902287141] [2023-09-01 05:14:05,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:14:05,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:14:06,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:14:06,002 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:14:06,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:14:06,059 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:14:06,060 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:14:06,060 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:14:06,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-09-01 05:14:06,060 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:14:06,062 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:14:06,062 WARN L233 ceAbstractionStarter]: 19 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:14:06,062 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 20 thread instances. [2023-09-01 05:14:06,254 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:14:06,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1855 places, 1995 transitions, 4470 flow [2023-09-01 05:14:08,105 INFO L130 PetriNetUnfolder]: 201/2233 cut-off events. [2023-09-01 05:14:08,105 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 05:14:08,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2504 conditions, 2233 events. 201/2233 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 12565 event pairs, 0 based on Foata normal form. 0/1811 useless extension candidates. Maximal degree in co-relation 2351. Up to 42 conditions per place. [2023-09-01 05:14:08,271 INFO L82 GeneralOperation]: Start removeDead. Operand has 1855 places, 1995 transitions, 4470 flow [2023-09-01 05:14:08,382 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1855 places, 1995 transitions, 4470 flow [2023-09-01 05:14:08,383 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:14:08,383 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1855 places, 1995 transitions, 4470 flow [2023-09-01 05:14:08,383 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1855 places, 1995 transitions, 4470 flow [2023-09-01 05:14:08,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1855 places, 1995 transitions, 4470 flow [2023-09-01 05:14:09,860 INFO L130 PetriNetUnfolder]: 201/2233 cut-off events. [2023-09-01 05:14:09,860 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 05:14:10,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2504 conditions, 2233 events. 201/2233 cut-off events. For 1520/1520 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 12565 event pairs, 0 based on Foata normal form. 0/1811 useless extension candidates. Maximal degree in co-relation 2351. Up to 42 conditions per place. [2023-09-01 05:14:10,790 INFO L119 LiptonReduction]: Number of co-enabled transitions 3662720 [2023-09-01 05:14:52,361 INFO L134 LiptonReduction]: Checked pairs total: 11839149 [2023-09-01 05:14:52,361 INFO L136 LiptonReduction]: Total number of compositions: 1520 [2023-09-01 05:14:52,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:14:52,363 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:14:52,364 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:14:52,647 INFO L130 PetriNetUnfolder]: 120/906 cut-off events. [2023-09-01 05:14:52,647 INFO L131 PetriNetUnfolder]: For 1520/1520 co-relation queries the response was YES. [2023-09-01 05:14:52,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:14:52,647 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 05:14:52,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:14:52,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:14:52,648 INFO L85 PathProgramCache]: Analyzing trace with hash -2093940908, now seen corresponding path program 1 times [2023-09-01 05:14:52,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:14:52,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675844324] [2023-09-01 05:14:52,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:14:52,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:14:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:14:52,690 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:14:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:14:52,742 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:14:52,743 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:14:52,743 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:14:52,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-09-01 05:14:52,743 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:14:52,743 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:14:52,744 WARN L233 ceAbstractionStarter]: 20 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:14:52,744 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 21 thread instances. [2023-09-01 05:14:52,932 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:14:52,946 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1946 places, 2093 transitions, 4711 flow [2023-09-01 05:14:54,774 INFO L130 PetriNetUnfolder]: 211/2343 cut-off events. [2023-09-01 05:14:54,774 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 05:14:54,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2638 conditions, 2343 events. 211/2343 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 13237 event pairs, 0 based on Foata normal form. 0/1900 useless extension candidates. Maximal degree in co-relation 2484. Up to 44 conditions per place. [2023-09-01 05:14:54,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 1946 places, 2093 transitions, 4711 flow [2023-09-01 05:14:54,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1946 places, 2093 transitions, 4711 flow [2023-09-01 05:14:54,990 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:14:54,990 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1946 places, 2093 transitions, 4711 flow [2023-09-01 05:14:54,990 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1946 places, 2093 transitions, 4711 flow [2023-09-01 05:14:54,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1946 places, 2093 transitions, 4711 flow [2023-09-01 05:14:56,771 INFO L130 PetriNetUnfolder]: 211/2343 cut-off events. [2023-09-01 05:14:56,771 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 05:14:56,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2638 conditions, 2343 events. 211/2343 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 13237 event pairs, 0 based on Foata normal form. 0/1900 useless extension candidates. Maximal degree in co-relation 2484. Up to 44 conditions per place. [2023-09-01 05:14:57,681 INFO L119 LiptonReduction]: Number of co-enabled transitions 4045482 [2023-09-01 05:15:41,284 INFO L134 LiptonReduction]: Checked pairs total: 13079904 [2023-09-01 05:15:41,284 INFO L136 LiptonReduction]: Total number of compositions: 1577 [2023-09-01 05:15:41,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:15:41,286 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:15:41,286 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:15:41,589 INFO L130 PetriNetUnfolder]: 128/961 cut-off events. [2023-09-01 05:15:41,589 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2023-09-01 05:15:41,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:15:41,590 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 05:15:41,590 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:15:41,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:15:41,590 INFO L85 PathProgramCache]: Analyzing trace with hash -1413707704, now seen corresponding path program 1 times [2023-09-01 05:15:41,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:15:41,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932188869] [2023-09-01 05:15:41,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:15:41,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:15:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:15:41,636 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:15:41,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:15:41,689 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:15:41,689 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:15:41,690 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:15:41,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-09-01 05:15:41,690 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:15:41,690 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:15:41,690 WARN L233 ceAbstractionStarter]: 21 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:15:41,690 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 22 thread instances. [2023-09-01 05:15:41,892 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:15:41,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2037 places, 2191 transitions, 4954 flow [2023-09-01 05:15:43,781 INFO L130 PetriNetUnfolder]: 221/2453 cut-off events. [2023-09-01 05:15:43,781 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 05:15:44,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2773 conditions, 2453 events. 221/2453 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 13918 event pairs, 0 based on Foata normal form. 0/1989 useless extension candidates. Maximal degree in co-relation 2618. Up to 46 conditions per place. [2023-09-01 05:15:44,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 2037 places, 2191 transitions, 4954 flow [2023-09-01 05:15:44,067 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2037 places, 2191 transitions, 4954 flow [2023-09-01 05:15:44,067 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:15:44,068 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2037 places, 2191 transitions, 4954 flow [2023-09-01 05:15:44,068 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2037 places, 2191 transitions, 4954 flow [2023-09-01 05:15:44,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2037 places, 2191 transitions, 4954 flow [2023-09-01 05:15:46,933 INFO L130 PetriNetUnfolder]: 221/2453 cut-off events. [2023-09-01 05:15:46,933 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 05:15:47,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2773 conditions, 2453 events. 221/2453 cut-off events. For 2002/2002 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 13918 event pairs, 0 based on Foata normal form. 0/1989 useless extension candidates. Maximal degree in co-relation 2618. Up to 46 conditions per place. [2023-09-01 05:15:47,939 INFO L119 LiptonReduction]: Number of co-enabled transitions 4447256 [2023-09-01 05:16:33,467 INFO L134 LiptonReduction]: Checked pairs total: 14441192 [2023-09-01 05:16:33,467 INFO L136 LiptonReduction]: Total number of compositions: 1659 [2023-09-01 05:16:33,469 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:16:33,469 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:16:33,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:16:33,768 INFO L130 PetriNetUnfolder]: 135/1007 cut-off events. [2023-09-01 05:16:33,768 INFO L131 PetriNetUnfolder]: For 2002/2002 co-relation queries the response was YES. [2023-09-01 05:16:33,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:16:33,769 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 05:16:33,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:16:33,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:16:33,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1769364969, now seen corresponding path program 1 times [2023-09-01 05:16:33,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:16:33,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1322062354] [2023-09-01 05:16:33,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:16:33,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:16:33,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:16:33,829 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:16:33,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:16:33,889 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:16:33,890 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:16:33,890 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:16:33,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-09-01 05:16:33,890 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:16:33,891 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:16:33,891 WARN L233 ceAbstractionStarter]: 22 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:16:33,891 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 23 thread instances. [2023-09-01 05:16:34,102 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:16:34,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2128 places, 2289 transitions, 5199 flow [2023-09-01 05:16:36,509 INFO L130 PetriNetUnfolder]: 231/2563 cut-off events. [2023-09-01 05:16:36,509 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 05:16:36,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2909 conditions, 2563 events. 231/2563 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 14576 event pairs, 0 based on Foata normal form. 0/2078 useless extension candidates. Maximal degree in co-relation 2753. Up to 48 conditions per place. [2023-09-01 05:16:36,723 INFO L82 GeneralOperation]: Start removeDead. Operand has 2128 places, 2289 transitions, 5199 flow [2023-09-01 05:16:36,764 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2128 places, 2289 transitions, 5199 flow [2023-09-01 05:16:36,764 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:16:36,764 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2128 places, 2289 transitions, 5199 flow [2023-09-01 05:16:36,764 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2128 places, 2289 transitions, 5199 flow [2023-09-01 05:16:36,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2128 places, 2289 transitions, 5199 flow [2023-09-01 05:16:38,824 INFO L130 PetriNetUnfolder]: 231/2563 cut-off events. [2023-09-01 05:16:38,824 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 05:16:39,038 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2909 conditions, 2563 events. 231/2563 cut-off events. For 2277/2277 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 14576 event pairs, 0 based on Foata normal form. 0/2078 useless extension candidates. Maximal degree in co-relation 2753. Up to 48 conditions per place. [2023-09-01 05:16:39,850 INFO L119 LiptonReduction]: Number of co-enabled transitions 4868042 [2023-09-01 05:17:27,844 INFO L134 LiptonReduction]: Checked pairs total: 15654079 [2023-09-01 05:17:27,845 INFO L136 LiptonReduction]: Total number of compositions: 1731 [2023-09-01 05:17:27,846 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:17:27,847 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:17:27,847 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:17:28,165 INFO L130 PetriNetUnfolder]: 141/1057 cut-off events. [2023-09-01 05:17:28,165 INFO L131 PetriNetUnfolder]: For 2277/2277 co-relation queries the response was YES. [2023-09-01 05:17:28,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:17:28,165 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 05:17:28,165 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:17:28,166 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:17:28,166 INFO L85 PathProgramCache]: Analyzing trace with hash -186076379, now seen corresponding path program 1 times [2023-09-01 05:17:28,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:17:28,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164193136] [2023-09-01 05:17:28,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:17:28,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:17:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:17:28,215 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:17:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:17:28,278 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:17:28,278 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:17:28,278 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:17:28,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-09-01 05:17:28,279 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:17:28,279 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:17:28,279 WARN L233 ceAbstractionStarter]: 23 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:17:28,279 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 24 thread instances. [2023-09-01 05:17:28,494 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:17:28,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2219 places, 2387 transitions, 5446 flow [2023-09-01 05:17:30,802 INFO L130 PetriNetUnfolder]: 241/2673 cut-off events. [2023-09-01 05:17:30,802 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 05:17:31,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 2673 events. 241/2673 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 15285 event pairs, 0 based on Foata normal form. 0/2167 useless extension candidates. Maximal degree in co-relation 2889. Up to 50 conditions per place. [2023-09-01 05:17:31,032 INFO L82 GeneralOperation]: Start removeDead. Operand has 2219 places, 2387 transitions, 5446 flow [2023-09-01 05:17:31,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2219 places, 2387 transitions, 5446 flow [2023-09-01 05:17:31,075 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:17:31,075 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2219 places, 2387 transitions, 5446 flow [2023-09-01 05:17:31,075 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2219 places, 2387 transitions, 5446 flow [2023-09-01 05:17:31,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2219 places, 2387 transitions, 5446 flow [2023-09-01 05:17:33,337 INFO L130 PetriNetUnfolder]: 241/2673 cut-off events. [2023-09-01 05:17:33,337 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 05:17:33,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3046 conditions, 2673 events. 241/2673 cut-off events. For 2576/2576 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 15285 event pairs, 0 based on Foata normal form. 0/2167 useless extension candidates. Maximal degree in co-relation 2889. Up to 50 conditions per place. [2023-09-01 05:17:34,450 INFO L119 LiptonReduction]: Number of co-enabled transitions 5307840 [2023-09-01 05:18:24,255 INFO L134 LiptonReduction]: Checked pairs total: 15443251 [2023-09-01 05:18:24,255 INFO L136 LiptonReduction]: Total number of compositions: 1811 [2023-09-01 05:18:24,256 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 05:18:24,257 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;@5aa3ded0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 05:18:24,257 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 05:18:24,668 INFO L130 PetriNetUnfolder]: 149/1104 cut-off events. [2023-09-01 05:18:24,668 INFO L131 PetriNetUnfolder]: For 2576/2576 co-relation queries the response was YES. [2023-09-01 05:18:24,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 05:18:24,669 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 05:18:24,669 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 05:18:24,669 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 05:18:24,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2030743746, now seen corresponding path program 1 times [2023-09-01 05:18:24,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 05:18:24,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035948435] [2023-09-01 05:18:24,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 05:18:24,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 05:18:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:18:24,723 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 05:18:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 05:18:24,780 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 05:18:24,780 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 05:18:24,780 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 05:18:24,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-09-01 05:18:24,781 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 05:18:24,781 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 05:18:24,781 WARN L233 ceAbstractionStarter]: 24 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 05:18:24,781 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 25 thread instances. [2023-09-01 05:18:25,048 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-09-01 05:18:25,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2310 places, 2485 transitions, 5695 flow [2023-09-01 05:18:27,535 INFO L130 PetriNetUnfolder]: 251/2783 cut-off events. [2023-09-01 05:18:27,536 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 05:18:27,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3184 conditions, 2783 events. 251/2783 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 15953 event pairs, 0 based on Foata normal form. 0/2256 useless extension candidates. Maximal degree in co-relation 3026. Up to 52 conditions per place. [2023-09-01 05:18:27,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 2310 places, 2485 transitions, 5695 flow [2023-09-01 05:18:27,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2310 places, 2485 transitions, 5695 flow [2023-09-01 05:18:27,859 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 05:18:27,859 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2310 places, 2485 transitions, 5695 flow [2023-09-01 05:18:27,860 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2310 places, 2485 transitions, 5695 flow [2023-09-01 05:18:27,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2310 places, 2485 transitions, 5695 flow [2023-09-01 05:18:30,369 INFO L130 PetriNetUnfolder]: 251/2783 cut-off events. [2023-09-01 05:18:30,369 INFO L131 PetriNetUnfolder]: For 2900/2900 co-relation queries the response was YES. [2023-09-01 05:18:30,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3184 conditions, 2783 events. 251/2783 cut-off events. For 2900/2900 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 15953 event pairs, 0 based on Foata normal form. 0/2256 useless extension candidates. Maximal degree in co-relation 3026. Up to 52 conditions per place. [2023-09-01 05:18:31,650 INFO L119 LiptonReduction]: Number of co-enabled transitions 5766650 Killed by 15