./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 --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 11:12:06,520 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 11:12:06,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 11:12:06,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 11:12:06,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 11:12:06,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 11:12:06,575 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 11:12:06,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 11:12:06,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 11:12:06,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 11:12:06,586 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 11:12:06,589 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 11:12:06,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 11:12:06,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 11:12:06,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 11:12:06,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 11:12:06,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 11:12:06,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 11:12:06,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 11:12:06,598 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 11:12:06,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 11:12:06,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 11:12:06,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 11:12:06,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 11:12:06,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 11:12:06,612 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 11:12:06,612 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 11:12:06,613 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 11:12:06,614 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 11:12:06,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 11:12:06,616 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 11:12:06,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 11:12:06,618 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 11:12:06,619 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 11:12:06,620 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 11:12:06,621 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 11:12:06,622 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 11:12:06,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 11:12:06,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 11:12:06,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 11:12:06,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 11:12:06,625 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 11:12:06,654 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 11:12:06,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 11:12:06,656 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 11:12:06,656 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 11:12:06,657 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 11:12:06,657 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 11:12:06,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 11:12:06,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 11:12:06,659 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 11:12:06,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 11:12:06,660 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 11:12:06,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 11:12:06,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 11:12:06,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 11:12:06,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 11:12:06,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 11:12:06,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 11:12:06,661 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 11:12:06,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 11:12:06,662 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 11:12:06,662 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 11:12:06,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 11:12:06,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 11:12:06,663 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 11:12:06,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:12:06,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 11:12:06,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 11:12:06,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 11:12:06,664 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 11:12:06,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 11:12:06,664 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 11:12:06,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 11:12:06,665 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 11:12:06,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 11:12:06,665 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 11:12:06,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 246cd07a930f0cb8d777c2eae74f25d04e3267c275b813f0c0f5232c23299340 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 11:12:06,989 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 11:12:07,009 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 11:12:07,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 11:12:07,012 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 11:12:07,013 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 11:12:07,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i [2023-09-01 11:12:08,186 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 11:12:08,496 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 11:12:08,497 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i [2023-09-01 11:12:08,525 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d02822b4c/d4e202132e4c4ddcb6e82056ba6edf59/FLAGcde60e93b [2023-09-01 11:12:08,536 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d02822b4c/d4e202132e4c4ddcb6e82056ba6edf59 [2023-09-01 11:12:08,538 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 11:12:08,538 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 11:12:08,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 11:12:08,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 11:12:08,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 11:12:08,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:12:08" (1/1) ... [2023-09-01 11:12:08,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce1d6b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:08, skipping insertion in model container [2023-09-01 11:12:08,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 11:12:08" (1/1) ... [2023-09-01 11:12:08,553 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 11:12:08,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 11:12:08,969 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2023-09-01 11:12:09,025 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:12:09,048 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 11:12:09,087 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_78-equ_racing.i[47038,47051] [2023-09-01 11:12:09,112 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 11:12:09,167 INFO L208 MainTranslator]: Completed translation [2023-09-01 11:12:09,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:09 WrapperNode [2023-09-01 11:12:09,168 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 11:12:09,169 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 11:12:09,170 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 11:12:09,170 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 11:12:09,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:09" (1/1) ... [2023-09-01 11:12:09,195 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:09" (1/1) ... [2023-09-01 11:12:09,218 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 204 [2023-09-01 11:12:09,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 11:12:09,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 11:12:09,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 11:12:09,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 11:12:09,232 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:09" (1/1) ... [2023-09-01 11:12:09,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:09" (1/1) ... [2023-09-01 11:12:09,238 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:09" (1/1) ... [2023-09-01 11:12:09,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:09" (1/1) ... [2023-09-01 11:12:09,249 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:09" (1/1) ... [2023-09-01 11:12:09,259 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:09" (1/1) ... [2023-09-01 11:12:09,263 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:09" (1/1) ... [2023-09-01 11:12:09,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:09" (1/1) ... [2023-09-01 11:12:09,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 11:12:09,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 11:12:09,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 11:12:09,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 11:12:09,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:09" (1/1) ... [2023-09-01 11:12:09,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 11:12:09,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 11:12:09,306 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 11:12:09,328 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 11:12:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 11:12:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 11:12:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 11:12:09,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 11:12:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 11:12:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 11:12:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 11:12:09,343 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 11:12:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 11:12:09,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 11:12:09,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 11:12:09,345 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 11:12:09,478 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 11:12:09,480 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 11:12:09,902 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 11:12:09,911 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 11:12:09,914 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-09-01 11:12:09,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:12:09 BoogieIcfgContainer [2023-09-01 11:12:09,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 11:12:09,925 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 11:12:09,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 11:12:09,929 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 11:12:09,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 11:12:08" (1/3) ... [2023-09-01 11:12:09,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1abde8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:12:09, skipping insertion in model container [2023-09-01 11:12:09,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 11:12:09" (2/3) ... [2023-09-01 11:12:09,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a1abde8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 11:12:09, skipping insertion in model container [2023-09-01 11:12:09,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 11:12:09" (3/3) ... [2023-09-01 11:12:09,932 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_78-equ_racing.i [2023-09-01 11:12:09,942 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 11:12:09,951 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 11:12:09,951 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-09-01 11:12:09,951 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 11:12:10,057 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 11:12:10,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 201 transitions, 410 flow [2023-09-01 11:12:10,225 INFO L130 PetriNetUnfolder]: 43/271 cut-off events. [2023-09-01 11:12:10,225 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 11:12:10,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 271 events. 43/271 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 823 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 132. Up to 8 conditions per place. [2023-09-01 11:12:10,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 201 transitions, 410 flow [2023-09-01 11:12:10,245 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 194 transitions, 393 flow [2023-09-01 11:12:10,248 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:12:10,261 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 194 transitions, 393 flow [2023-09-01 11:12:10,263 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 194 transitions, 393 flow [2023-09-01 11:12:10,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 194 transitions, 393 flow [2023-09-01 11:12:10,317 INFO L130 PetriNetUnfolder]: 41/264 cut-off events. [2023-09-01 11:12:10,318 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:12:10,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 264 events. 41/264 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 803 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 132. Up to 8 conditions per place. [2023-09-01 11:12:10,327 INFO L119 LiptonReduction]: Number of co-enabled transitions 8664 [2023-09-01 11:12:17,351 INFO L134 LiptonReduction]: Checked pairs total: 18412 [2023-09-01 11:12:17,351 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-09-01 11:12:17,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:12:17,371 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;@5b71f6a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:12:17,372 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:12:17,383 INFO L130 PetriNetUnfolder]: 9/35 cut-off events. [2023-09-01 11:12:17,384 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 11:12:17,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:12:17,385 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 11:12:17,385 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:12:17,390 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:12:17,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1260636167, now seen corresponding path program 1 times [2023-09-01 11:12:17,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:12:17,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148186879] [2023-09-01 11:12:17,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:12:17,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:12:17,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:17,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:12:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:17,658 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:12:17,661 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:12:17,662 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:12:17,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 11:12:17,665 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:12:17,672 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:12:17,673 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:12:17,674 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 11:12:17,714 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 11:12:17,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 260 transitions, 538 flow [2023-09-01 11:12:17,792 INFO L130 PetriNetUnfolder]: 72/424 cut-off events. [2023-09-01 11:12:17,792 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:12:17,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 424 events. 72/424 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1596 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 273. Up to 12 conditions per place. [2023-09-01 11:12:17,797 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 260 transitions, 538 flow [2023-09-01 11:12:17,801 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 258 transitions, 534 flow [2023-09-01 11:12:17,801 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:12:17,801 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 258 transitions, 534 flow [2023-09-01 11:12:17,802 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 258 transitions, 534 flow [2023-09-01 11:12:17,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 258 transitions, 534 flow [2023-09-01 11:12:17,851 INFO L130 PetriNetUnfolder]: 71/422 cut-off events. [2023-09-01 11:12:17,851 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 11:12:17,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 422 events. 71/422 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1612 event pairs, 0 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 271. Up to 12 conditions per place. [2023-09-01 11:12:17,869 INFO L119 LiptonReduction]: Number of co-enabled transitions 25080 [2023-09-01 11:12:24,907 INFO L134 LiptonReduction]: Checked pairs total: 57220 [2023-09-01 11:12:24,907 INFO L136 LiptonReduction]: Total number of compositions: 206 [2023-09-01 11:12:24,909 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:12:24,910 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;@5b71f6a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:12:24,910 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:12:24,918 INFO L130 PetriNetUnfolder]: 37/113 cut-off events. [2023-09-01 11:12:24,918 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 11:12:24,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:12:24,919 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 11:12:24,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:12:24,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:12:24,920 INFO L85 PathProgramCache]: Analyzing trace with hash -147922955, now seen corresponding path program 1 times [2023-09-01 11:12:24,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:12:24,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823875667] [2023-09-01 11:12:24,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:12:24,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:12:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:24,947 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:12:24,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:24,994 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:12:24,995 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:12:24,997 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:12:24,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 11:12:24,998 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:12:24,999 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:12:24,999 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:12:24,999 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 11:12:25,021 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 11:12:25,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 271 places, 319 transitions, 668 flow [2023-09-01 11:12:25,106 INFO L130 PetriNetUnfolder]: 106/608 cut-off events. [2023-09-01 11:12:25,107 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:12:25,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 636 conditions, 608 events. 106/608 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2559 event pairs, 1 based on Foata normal form. 0/491 useless extension candidates. Maximal degree in co-relation 432. Up to 16 conditions per place. [2023-09-01 11:12:25,114 INFO L82 GeneralOperation]: Start removeDead. Operand has 271 places, 319 transitions, 668 flow [2023-09-01 11:12:25,120 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 270 places, 317 transitions, 664 flow [2023-09-01 11:12:25,120 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:12:25,120 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 270 places, 317 transitions, 664 flow [2023-09-01 11:12:25,121 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 270 places, 317 transitions, 664 flow [2023-09-01 11:12:25,121 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 270 places, 317 transitions, 664 flow [2023-09-01 11:12:25,207 INFO L130 PetriNetUnfolder]: 105/606 cut-off events. [2023-09-01 11:12:25,208 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 11:12:25,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 634 conditions, 606 events. 105/606 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2552 event pairs, 1 based on Foata normal form. 0/490 useless extension candidates. Maximal degree in co-relation 430. Up to 16 conditions per place. [2023-09-01 11:12:25,270 INFO L119 LiptonReduction]: Number of co-enabled transitions 47880 [2023-09-01 11:12:30,659 INFO L134 LiptonReduction]: Checked pairs total: 102219 [2023-09-01 11:12:30,660 INFO L136 LiptonReduction]: Total number of compositions: 243 [2023-09-01 11:12:30,662 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:12:30,663 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;@5b71f6a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:12:30,663 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:12:30,676 INFO L130 PetriNetUnfolder]: 61/180 cut-off events. [2023-09-01 11:12:30,676 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 11:12:30,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:12:30,677 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 11:12:30,677 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:12:30,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:12:30,678 INFO L85 PathProgramCache]: Analyzing trace with hash -943329716, now seen corresponding path program 1 times [2023-09-01 11:12:30,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:12:30,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289378200] [2023-09-01 11:12:30,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:12:30,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:12:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:30,703 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:12:30,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:30,724 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:12:30,725 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:12:30,725 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:12:30,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 11:12:30,725 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:12:30,726 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:12:30,726 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:12:30,726 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 11:12:30,750 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 11:12:30,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 319 places, 378 transitions, 800 flow [2023-09-01 11:12:30,899 INFO L130 PetriNetUnfolder]: 152/856 cut-off events. [2023-09-01 11:12:30,899 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:12:30,916 INFO L83 FinitePrefix]: Finished finitePrefix Result has 911 conditions, 856 events. 152/856 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3889 event pairs, 6 based on Foata normal form. 0/695 useless extension candidates. Maximal degree in co-relation 628. Up to 32 conditions per place. [2023-09-01 11:12:30,917 INFO L82 GeneralOperation]: Start removeDead. Operand has 319 places, 378 transitions, 800 flow [2023-09-01 11:12:30,928 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 318 places, 376 transitions, 796 flow [2023-09-01 11:12:30,928 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:12:30,928 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 318 places, 376 transitions, 796 flow [2023-09-01 11:12:30,929 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 318 places, 376 transitions, 796 flow [2023-09-01 11:12:30,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 318 places, 376 transitions, 796 flow [2023-09-01 11:12:31,060 INFO L130 PetriNetUnfolder]: 151/854 cut-off events. [2023-09-01 11:12:31,061 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 11:12:31,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 909 conditions, 854 events. 151/854 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3888 event pairs, 6 based on Foata normal form. 0/694 useless extension candidates. Maximal degree in co-relation 626. Up to 32 conditions per place. [2023-09-01 11:12:31,106 INFO L119 LiptonReduction]: Number of co-enabled transitions 77520 [2023-09-01 11:12:37,309 INFO L134 LiptonReduction]: Checked pairs total: 171843 [2023-09-01 11:12:37,309 INFO L136 LiptonReduction]: Total number of compositions: 293 [2023-09-01 11:12:37,311 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:12:37,312 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;@5b71f6a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:12:37,312 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:12:37,330 INFO L130 PetriNetUnfolder]: 92/260 cut-off events. [2023-09-01 11:12:37,330 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 11:12:37,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:12:37,330 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 11:12:37,331 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:12:37,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:12:37,331 INFO L85 PathProgramCache]: Analyzing trace with hash -1089661587, now seen corresponding path program 1 times [2023-09-01 11:12:37,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:12:37,332 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116309795] [2023-09-01 11:12:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:12:37,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:12:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:37,354 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:12:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:37,375 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:12:37,376 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:12:37,376 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:12:37,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 11:12:37,376 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:12:37,377 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:12:37,377 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:12:37,377 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 11:12:37,405 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 11:12:37,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 437 transitions, 934 flow [2023-09-01 11:12:37,629 INFO L130 PetriNetUnfolder]: 226/1236 cut-off events. [2023-09-01 11:12:37,629 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 11:12:37,651 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1347 conditions, 1236 events. 226/1236 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6144 event pairs, 23 based on Foata normal form. 0/1015 useless extension candidates. Maximal degree in co-relation 901. Up to 80 conditions per place. [2023-09-01 11:12:37,652 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 437 transitions, 934 flow [2023-09-01 11:12:37,666 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 366 places, 435 transitions, 930 flow [2023-09-01 11:12:37,666 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:12:37,667 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 366 places, 435 transitions, 930 flow [2023-09-01 11:12:37,667 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 366 places, 435 transitions, 930 flow [2023-09-01 11:12:37,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 366 places, 435 transitions, 930 flow [2023-09-01 11:12:37,869 INFO L130 PetriNetUnfolder]: 225/1234 cut-off events. [2023-09-01 11:12:37,869 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 11:12:37,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1345 conditions, 1234 events. 225/1234 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6161 event pairs, 23 based on Foata normal form. 0/1014 useless extension candidates. Maximal degree in co-relation 899. Up to 80 conditions per place. [2023-09-01 11:12:37,941 INFO L119 LiptonReduction]: Number of co-enabled transitions 114000 [2023-09-01 11:12:43,976 INFO L134 LiptonReduction]: Checked pairs total: 256844 [2023-09-01 11:12:43,976 INFO L136 LiptonReduction]: Total number of compositions: 332 [2023-09-01 11:12:43,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:12:43,984 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;@5b71f6a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:12:43,984 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:12:44,013 INFO L130 PetriNetUnfolder]: 113/328 cut-off events. [2023-09-01 11:12:44,014 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 11:12:44,014 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:12:44,014 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:12:44,014 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:12:44,015 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:12:44,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1183226707, now seen corresponding path program 1 times [2023-09-01 11:12:44,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:12:44,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615611041] [2023-09-01 11:12:44,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:12:44,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:12:44,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:44,067 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:12:44,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:44,090 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:12:44,090 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:12:44,091 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:12:44,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 11:12:44,091 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:12:44,092 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:12:44,092 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:12:44,092 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 11:12:44,122 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 11:12:44,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 415 places, 496 transitions, 1070 flow [2023-09-01 11:12:44,500 INFO L130 PetriNetUnfolder]: 364/1888 cut-off events. [2023-09-01 11:12:44,500 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 11:12:44,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2120 conditions, 1888 events. 364/1888 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10676 event pairs, 72 based on Foata normal form. 0/1575 useless extension candidates. Maximal degree in co-relation 1335. Up to 192 conditions per place. [2023-09-01 11:12:44,533 INFO L82 GeneralOperation]: Start removeDead. Operand has 415 places, 496 transitions, 1070 flow [2023-09-01 11:12:44,557 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 414 places, 494 transitions, 1066 flow [2023-09-01 11:12:44,558 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:12:44,558 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 414 places, 494 transitions, 1066 flow [2023-09-01 11:12:44,558 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 414 places, 494 transitions, 1066 flow [2023-09-01 11:12:44,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 414 places, 494 transitions, 1066 flow [2023-09-01 11:12:44,975 INFO L130 PetriNetUnfolder]: 363/1886 cut-off events. [2023-09-01 11:12:44,975 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 11:12:45,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 1886 events. 363/1886 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 10777 event pairs, 72 based on Foata normal form. 0/1574 useless extension candidates. Maximal degree in co-relation 1333. Up to 192 conditions per place. [2023-09-01 11:12:45,083 INFO L119 LiptonReduction]: Number of co-enabled transitions 157320 [2023-09-01 11:12:51,083 INFO L134 LiptonReduction]: Checked pairs total: 350983 [2023-09-01 11:12:51,083 INFO L136 LiptonReduction]: Total number of compositions: 364 [2023-09-01 11:12:51,085 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:12:51,085 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;@5b71f6a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:12:51,085 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:12:51,122 INFO L130 PetriNetUnfolder]: 147/429 cut-off events. [2023-09-01 11:12:51,122 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 11:12:51,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:12:51,123 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:12:51,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:12:51,123 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:12:51,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1486468492, now seen corresponding path program 1 times [2023-09-01 11:12:51,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:12:51,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340811205] [2023-09-01 11:12:51,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:12:51,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:12:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:51,177 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:12:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:51,222 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:12:51,228 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:12:51,229 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:12:51,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 11:12:51,229 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:12:51,230 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:12:51,232 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:12:51,232 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 11:12:51,268 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 11:12:51,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 463 places, 555 transitions, 1208 flow [2023-09-01 11:12:52,037 INFO L130 PetriNetUnfolder]: 646/3100 cut-off events. [2023-09-01 11:12:52,037 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 11:12:52,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3598 conditions, 3100 events. 646/3100 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 20606 event pairs, 201 based on Foata normal form. 0/2631 useless extension candidates. Maximal degree in co-relation 2106. Up to 448 conditions per place. [2023-09-01 11:12:52,237 INFO L82 GeneralOperation]: Start removeDead. Operand has 463 places, 555 transitions, 1208 flow [2023-09-01 11:12:52,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 462 places, 553 transitions, 1204 flow [2023-09-01 11:12:52,276 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:12:52,276 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 462 places, 553 transitions, 1204 flow [2023-09-01 11:12:52,276 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 462 places, 553 transitions, 1204 flow [2023-09-01 11:12:52,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 462 places, 553 transitions, 1204 flow [2023-09-01 11:12:53,020 INFO L130 PetriNetUnfolder]: 645/3098 cut-off events. [2023-09-01 11:12:53,020 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 11:12:53,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3596 conditions, 3098 events. 645/3098 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 20594 event pairs, 201 based on Foata normal form. 0/2630 useless extension candidates. Maximal degree in co-relation 2104. Up to 448 conditions per place. [2023-09-01 11:12:53,264 INFO L119 LiptonReduction]: Number of co-enabled transitions 207480 [2023-09-01 11:12:59,646 INFO L134 LiptonReduction]: Checked pairs total: 472511 [2023-09-01 11:12:59,646 INFO L136 LiptonReduction]: Total number of compositions: 411 [2023-09-01 11:12:59,648 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:12:59,648 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b71f6a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:12:59,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:12:59,697 INFO L130 PetriNetUnfolder]: 176/532 cut-off events. [2023-09-01 11:12:59,697 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 11:12:59,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:12:59,697 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:12:59,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:12:59,698 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:12:59,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1151230472, now seen corresponding path program 1 times [2023-09-01 11:12:59,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:12:59,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163355599] [2023-09-01 11:12:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:12:59,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:12:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:59,743 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:12:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:12:59,776 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:12:59,776 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:12:59,776 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:12:59,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 11:12:59,777 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:12:59,777 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:12:59,778 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:12:59,778 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 11:12:59,810 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 11:12:59,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 511 places, 614 transitions, 1348 flow [2023-09-01 11:13:00,994 INFO L130 PetriNetUnfolder]: 1248/5464 cut-off events. [2023-09-01 11:13:00,994 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 11:13:01,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6549 conditions, 5464 events. 1248/5464 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 42276 event pairs, 522 based on Foata normal form. 0/4711 useless extension candidates. Maximal degree in co-relation 3582. Up to 1024 conditions per place. [2023-09-01 11:13:01,219 INFO L82 GeneralOperation]: Start removeDead. Operand has 511 places, 614 transitions, 1348 flow [2023-09-01 11:13:01,273 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 510 places, 612 transitions, 1344 flow [2023-09-01 11:13:01,273 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:13:01,273 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 510 places, 612 transitions, 1344 flow [2023-09-01 11:13:01,273 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 510 places, 612 transitions, 1344 flow [2023-09-01 11:13:01,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 510 places, 612 transitions, 1344 flow [2023-09-01 11:13:02,387 INFO L130 PetriNetUnfolder]: 1247/5462 cut-off events. [2023-09-01 11:13:02,387 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 11:13:02,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6547 conditions, 5462 events. 1247/5462 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 42198 event pairs, 522 based on Foata normal form. 0/4710 useless extension candidates. Maximal degree in co-relation 3580. Up to 1024 conditions per place. [2023-09-01 11:13:02,897 INFO L119 LiptonReduction]: Number of co-enabled transitions 264480 [2023-09-01 11:13:09,511 INFO L134 LiptonReduction]: Checked pairs total: 613378 [2023-09-01 11:13:09,511 INFO L136 LiptonReduction]: Total number of compositions: 448 [2023-09-01 11:13:09,513 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:13:09,513 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;@5b71f6a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:13:09,514 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:13:09,580 INFO L130 PetriNetUnfolder]: 223/671 cut-off events. [2023-09-01 11:13:09,581 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 11:13:09,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:13:09,581 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:13:09,581 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:13:09,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:13:09,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1748661837, now seen corresponding path program 1 times [2023-09-01 11:13:09,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:13:09,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989535038] [2023-09-01 11:13:09,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:13:09,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:13:09,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:13:09,612 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:13:09,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:13:09,640 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:13:09,640 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:13:09,641 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:13:09,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 11:13:09,641 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:13:09,641 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:13:09,642 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:13:09,642 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 11:13:09,679 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 11:13:09,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 559 places, 673 transitions, 1490 flow [2023-09-01 11:13:12,724 INFO L130 PetriNetUnfolder]: 2554/10196 cut-off events. [2023-09-01 11:13:12,725 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:13:12,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12573 conditions, 10196 events. 2554/10196 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 90882 event pairs, 1291 based on Foata normal form. 0/8903 useless extension candidates. Maximal degree in co-relation 6531. Up to 2304 conditions per place. [2023-09-01 11:13:12,957 INFO L82 GeneralOperation]: Start removeDead. Operand has 559 places, 673 transitions, 1490 flow [2023-09-01 11:13:13,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 558 places, 671 transitions, 1486 flow [2023-09-01 11:13:13,099 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:13:13,099 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 558 places, 671 transitions, 1486 flow [2023-09-01 11:13:13,100 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 558 places, 671 transitions, 1486 flow [2023-09-01 11:13:13,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 558 places, 671 transitions, 1486 flow [2023-09-01 11:13:15,770 INFO L130 PetriNetUnfolder]: 2553/10194 cut-off events. [2023-09-01 11:13:15,771 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 11:13:16,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12571 conditions, 10194 events. 2553/10194 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 90822 event pairs, 1291 based on Foata normal form. 0/8902 useless extension candidates. Maximal degree in co-relation 6529. Up to 2304 conditions per place. [2023-09-01 11:13:16,686 INFO L119 LiptonReduction]: Number of co-enabled transitions 328320 [2023-09-01 11:13:24,144 INFO L134 LiptonReduction]: Checked pairs total: 766536 [2023-09-01 11:13:24,144 INFO L136 LiptonReduction]: Total number of compositions: 494 [2023-09-01 11:13:24,146 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:13:24,147 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b71f6a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:13:24,147 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:13:24,219 INFO L130 PetriNetUnfolder]: 277/848 cut-off events. [2023-09-01 11:13:24,219 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 11:13:24,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:13:24,219 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:13:24,220 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:13:24,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:13:24,220 INFO L85 PathProgramCache]: Analyzing trace with hash 988407282, now seen corresponding path program 1 times [2023-09-01 11:13:24,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:13:24,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841740436] [2023-09-01 11:13:24,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:13:24,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:13:24,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:13:24,245 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:13:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:13:24,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:13:24,274 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:13:24,274 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:13:24,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 11:13:24,274 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:13:24,277 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:13:24,278 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:13:24,278 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 11:13:24,323 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 11:13:24,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 607 places, 732 transitions, 1634 flow [2023-09-01 11:13:30,284 INFO L130 PetriNetUnfolder]: 5396/19792 cut-off events. [2023-09-01 11:13:30,284 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:13:30,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24998 conditions, 19792 events. 5396/19792 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 201736 event pairs, 3084 based on Foata normal form. 0/17447 useless extension candidates. Maximal degree in co-relation 12553. Up to 5120 conditions per place. [2023-09-01 11:13:30,855 INFO L82 GeneralOperation]: Start removeDead. Operand has 607 places, 732 transitions, 1634 flow [2023-09-01 11:13:31,154 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 606 places, 730 transitions, 1630 flow [2023-09-01 11:13:31,154 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:13:31,154 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 606 places, 730 transitions, 1630 flow [2023-09-01 11:13:31,154 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 606 places, 730 transitions, 1630 flow [2023-09-01 11:13:31,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 606 places, 730 transitions, 1630 flow [2023-09-01 11:13:37,083 INFO L130 PetriNetUnfolder]: 5395/19790 cut-off events. [2023-09-01 11:13:37,083 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 11:13:37,765 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24996 conditions, 19790 events. 5395/19790 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 201870 event pairs, 3084 based on Foata normal form. 0/17446 useless extension candidates. Maximal degree in co-relation 12551. Up to 5120 conditions per place. [2023-09-01 11:13:39,430 INFO L119 LiptonReduction]: Number of co-enabled transitions 399000 [2023-09-01 11:13:47,001 INFO L134 LiptonReduction]: Checked pairs total: 928784 [2023-09-01 11:13:47,002 INFO L136 LiptonReduction]: Total number of compositions: 535 [2023-09-01 11:13:47,003 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:13:47,003 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;@5b71f6a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:13:47,003 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:13:47,130 INFO L130 PetriNetUnfolder]: 374/1114 cut-off events. [2023-09-01 11:13:47,130 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 11:13:47,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:13:47,130 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:13:47,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:13:47,131 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:13:47,131 INFO L85 PathProgramCache]: Analyzing trace with hash -114241939, now seen corresponding path program 1 times [2023-09-01 11:13:47,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:13:47,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053300779] [2023-09-01 11:13:47,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:13:47,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:13:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:13:47,158 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:13:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:13:47,185 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:13:47,185 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:13:47,185 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:13:47,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 11:13:47,186 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:13:47,186 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:13:47,187 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:13:47,187 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 11:13:47,255 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 11:13:47,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 655 places, 791 transitions, 1780 flow [2023-09-01 11:14:00,418 INFO L130 PetriNetUnfolder]: 11566/39372 cut-off events. [2023-09-01 11:14:00,418 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:14:02,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50736 conditions, 39372 events. 11566/39372 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 446102 event pairs, 7181 based on Foata normal form. 0/34951 useless extension candidates. Maximal degree in co-relation 24976. Up to 11264 conditions per place. [2023-09-01 11:14:02,524 INFO L82 GeneralOperation]: Start removeDead. Operand has 655 places, 791 transitions, 1780 flow [2023-09-01 11:14:03,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 654 places, 789 transitions, 1776 flow [2023-09-01 11:14:03,755 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:14:03,755 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 654 places, 789 transitions, 1776 flow [2023-09-01 11:14:03,755 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 654 places, 789 transitions, 1776 flow [2023-09-01 11:14:03,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 654 places, 789 transitions, 1776 flow [2023-09-01 11:14:16,475 INFO L130 PetriNetUnfolder]: 11565/39370 cut-off events. [2023-09-01 11:14:16,476 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 11:14:18,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50734 conditions, 39370 events. 11565/39370 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 744. Compared 446115 event pairs, 7181 based on Foata normal form. 0/34950 useless extension candidates. Maximal degree in co-relation 24974. Up to 11264 conditions per place. [2023-09-01 11:14:22,609 INFO L119 LiptonReduction]: Number of co-enabled transitions 476520 [2023-09-01 11:14:32,090 INFO L134 LiptonReduction]: Checked pairs total: 1245810 [2023-09-01 11:14:32,090 INFO L136 LiptonReduction]: Total number of compositions: 576 [2023-09-01 11:14:32,091 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:14:32,091 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;@5b71f6a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:14:32,091 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:14:32,247 INFO L130 PetriNetUnfolder]: 502/1481 cut-off events. [2023-09-01 11:14:32,247 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 11:14:32,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:14:32,247 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 11:14:32,247 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:14:32,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:14:32,248 INFO L85 PathProgramCache]: Analyzing trace with hash 1853058232, now seen corresponding path program 1 times [2023-09-01 11:14:32,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:14:32,248 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033696783] [2023-09-01 11:14:32,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:14:32,248 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:14:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:14:32,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:14:32,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:14:32,315 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:14:32,315 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:14:32,316 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:14:32,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 11:14:32,316 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:14:32,317 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:14:32,317 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:14:32,317 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 11:14:32,361 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 11:14:32,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 703 places, 850 transitions, 1928 flow [2023-09-01 11:15:04,155 INFO L130 PetriNetUnfolder]: 24904/79432 cut-off events. [2023-09-01 11:15:04,155 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:15:11,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104123 conditions, 79432 events. 24904/79432 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 986443 event pairs, 16398 based on Foata normal form. 0/70887 useless extension candidates. Maximal degree in co-relation 50712. Up to 24576 conditions per place. [2023-09-01 11:15:11,759 INFO L82 GeneralOperation]: Start removeDead. Operand has 703 places, 850 transitions, 1928 flow [2023-09-01 11:15:14,438 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 702 places, 848 transitions, 1924 flow [2023-09-01 11:15:14,438 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:15:14,439 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 702 places, 848 transitions, 1924 flow [2023-09-01 11:15:14,439 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 702 places, 848 transitions, 1924 flow [2023-09-01 11:15:14,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 702 places, 848 transitions, 1924 flow [2023-09-01 11:15:42,654 INFO L130 PetriNetUnfolder]: 24903/79430 cut-off events. [2023-09-01 11:15:42,654 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 11:15:50,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104121 conditions, 79430 events. 24903/79430 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 986841 event pairs, 16398 based on Foata normal form. 0/70886 useless extension candidates. Maximal degree in co-relation 50710. Up to 24576 conditions per place. [2023-09-01 11:16:06,180 INFO L119 LiptonReduction]: Number of co-enabled transitions 560880 [2023-09-01 11:16:17,148 INFO L134 LiptonReduction]: Checked pairs total: 1450327 [2023-09-01 11:16:17,148 INFO L136 LiptonReduction]: Total number of compositions: 614 [2023-09-01 11:16:17,150 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 11:16:17,150 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5b71f6a0, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 11:16:17,150 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 11:16:17,368 INFO L130 PetriNetUnfolder]: 739/2064 cut-off events. [2023-09-01 11:16:17,368 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 11:16:17,368 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 11:16:17,368 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 11:16:17,369 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 11:16:17,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 11:16:17,369 INFO L85 PathProgramCache]: Analyzing trace with hash -867930178, now seen corresponding path program 1 times [2023-09-01 11:16:17,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 11:16:17,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167703199] [2023-09-01 11:16:17,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 11:16:17,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 11:16:17,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:16:17,392 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 11:16:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 11:16:17,420 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 11:16:17,420 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 11:16:17,420 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 11:16:17,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 11:16:17,421 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 11:16:17,421 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 11:16:17,421 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 11:16:17,421 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 11:16:17,470 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 11:16:17,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 751 places, 909 transitions, 2078 flow [2023-09-01 11:17:33,172 INFO L130 PetriNetUnfolder]: 53602/161476 cut-off events. [2023-09-01 11:17:33,172 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 11:17:51,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214855 conditions, 161476 events. 53602/161476 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2778. Compared 2168093 event pairs, 36879 based on Foata normal form. 0/144711 useless extension candidates. Maximal degree in co-relation 104097. Up to 53248 conditions per place. [2023-09-01 11:17:51,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 751 places, 909 transitions, 2078 flow [2023-09-01 11:18:01,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 750 places, 907 transitions, 2074 flow [2023-09-01 11:18:01,655 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 11:18:01,655 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 750 places, 907 transitions, 2074 flow [2023-09-01 11:18:01,655 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 750 places, 907 transitions, 2074 flow [2023-09-01 11:18:01,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 750 places, 907 transitions, 2074 flow