./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 11:53:25,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 11:53:25,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 11:53:25,151 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 11:53:25,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 11:53:25,156 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 11:53:25,158 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 11:53:25,160 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 11:53:25,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 11:53:25,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 11:53:25,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 11:53:25,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 11:53:25,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 11:53:25,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 11:53:25,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 11:53:25,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 11:53:25,178 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 11:53:25,179 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 11:53:25,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 11:53:25,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 11:53:25,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 11:53:25,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 11:53:25,193 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 11:53:25,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 11:53:25,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 11:53:25,200 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 11:53:25,200 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 11:53:25,202 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 11:53:25,202 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 11:53:25,203 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 11:53:25,203 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 11:53:25,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 11:53:25,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 11:53:25,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 11:53:25,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 11:53:25,212 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 11:53:25,212 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 11:53:25,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 11:53:25,213 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 11:53:25,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 11:53:25,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 11:53:25,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 11:53:25,248 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 11:53:25,248 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 11:53:25,249 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 11:53:25,249 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 11:53:25,250 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 11:53:25,250 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 11:53:25,251 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 11:53:25,251 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 11:53:25,251 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 11:53:25,251 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 11:53:25,252 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 11:53:25,252 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 11:53:25,252 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 11:53:25,253 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 11:53:25,253 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 11:53:25,253 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 11:53:25,253 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 11:53:25,253 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 11:53:25,254 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 11:53:25,254 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 11:53:25,254 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 11:53:25,254 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 11:53:25,254 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 11:53:25,254 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 11:53:25,255 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 11:53:25,255 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 11:53:25,255 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 11:53:25,255 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 11:53:25,255 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 11:53:25,256 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 11:53:25,256 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 11:53:25,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 11:53:25,256 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 11:53:25,256 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 11:53:25,257 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 11:53:25,257 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 11:53:25,257 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 11:53:25,257 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7fe0631e7f950e2868c8cb954edca4f6de3fdffbf6debba58771511fbac2e8b Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 11:53:25,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 11:53:25,566 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 11:53:25,570 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 11:53:25,571 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 11:53:25,572 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 11:53:25,573 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-08-31 11:53:26,779 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 11:53:27,030 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 11:53:27,031 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i [2023-08-31 11:53:27,040 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0bc6378/9d52bac2512d4742858178bb1b55fca4/FLAG324150d9a [2023-08-31 11:53:27,053 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0bc6378/9d52bac2512d4742858178bb1b55fca4 [2023-08-31 11:53:27,055 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 11:53:27,056 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 11:53:27,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 11:53:27,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 11:53:27,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 11:53:27,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:53:27" (1/1) ... [2023-08-31 11:53:27,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3296570c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:53:27, skipping insertion in model container [2023-08-31 11:53:27,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:53:27" (1/1) ... [2023-08-31 11:53:27,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 11:53:27,105 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 11:53:27,374 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2023-08-31 11:53:27,378 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 11:53:27,387 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 11:53:27,449 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/36_stack_cas_p0_vs_concur.i[30687,30700] [2023-08-31 11:53:27,450 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 11:53:27,484 INFO L208 MainTranslator]: Completed translation [2023-08-31 11:53:27,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:53:27 WrapperNode [2023-08-31 11:53:27,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 11:53:27,486 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 11:53:27,486 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 11:53:27,486 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 11:53:27,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:53:27" (1/1) ... [2023-08-31 11:53:27,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:53:27" (1/1) ... [2023-08-31 11:53:27,557 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 195 [2023-08-31 11:53:27,560 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 11:53:27,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 11:53:27,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 11:53:27,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 11:53:27,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:53:27" (1/1) ... [2023-08-31 11:53:27,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:53:27" (1/1) ... [2023-08-31 11:53:27,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:53:27" (1/1) ... [2023-08-31 11:53:27,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:53:27" (1/1) ... [2023-08-31 11:53:27,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:53:27" (1/1) ... [2023-08-31 11:53:27,606 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:53:27" (1/1) ... [2023-08-31 11:53:27,611 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:53:27" (1/1) ... [2023-08-31 11:53:27,621 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:53:27" (1/1) ... [2023-08-31 11:53:27,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 11:53:27,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 11:53:27,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 11:53:27,625 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 11:53:27,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:53:27" (1/1) ... [2023-08-31 11:53:27,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 11:53:27,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 11:53:27,658 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 11:53:27,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 11:53:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 11:53:27,689 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-31 11:53:27,692 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-31 11:53:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 11:53:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 11:53:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 11:53:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 11:53:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 11:53:27,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 11:53:27,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 11:53:27,695 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 11:53:27,814 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 11:53:27,816 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 11:53:28,239 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 11:53:28,413 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 11:53:28,413 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-31 11:53:28,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:53:28 BoogieIcfgContainer [2023-08-31 11:53:28,415 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 11:53:28,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 11:53:28,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 11:53:28,420 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 11:53:28,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:53:27" (1/3) ... [2023-08-31 11:53:28,421 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17256d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:53:28, skipping insertion in model container [2023-08-31 11:53:28,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:53:27" (2/3) ... [2023-08-31 11:53:28,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17256d26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:53:28, skipping insertion in model container [2023-08-31 11:53:28,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:53:28" (3/3) ... [2023-08-31 11:53:28,423 INFO L112 eAbstractionObserver]: Analyzing ICFG 36_stack_cas_p0_vs_concur.i [2023-08-31 11:53:28,429 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 11:53:28,435 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 11:53:28,435 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-08-31 11:53:28,435 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 11:53:28,525 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:53:28,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 152 transitions, 309 flow [2023-08-31 11:53:28,654 INFO L130 PetriNetUnfolder]: 10/162 cut-off events. [2023-08-31 11:53:28,654 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 11:53:28,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 162 events. 10/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 159 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 135. Up to 4 conditions per place. [2023-08-31 11:53:28,661 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 152 transitions, 309 flow [2023-08-31 11:53:28,665 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 152 transitions, 309 flow [2023-08-31 11:53:28,668 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:53:28,676 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 152 transitions, 309 flow [2023-08-31 11:53:28,678 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 152 transitions, 309 flow [2023-08-31 11:53:28,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 152 transitions, 309 flow [2023-08-31 11:53:28,714 INFO L130 PetriNetUnfolder]: 10/162 cut-off events. [2023-08-31 11:53:28,714 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 11:53:28,716 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167 conditions, 162 events. 10/162 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 159 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 135. Up to 4 conditions per place. [2023-08-31 11:53:28,718 INFO L119 LiptonReduction]: Number of co-enabled transitions 3198 [2023-08-31 11:53:54,111 WARN L222 SmtUtils]: Spent 5.67s on a formula simplification. DAG size of input: 126 DAG size of output: 122 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 11:54:04,317 WARN L222 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 121 DAG size of output: 117 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 11:54:15,516 WARN L222 SmtUtils]: Spent 9.26s on a formula simplification. DAG size of input: 125 DAG size of output: 121 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-31 11:54:19,234 INFO L134 LiptonReduction]: Checked pairs total: 4473 [2023-08-31 11:54:19,235 INFO L136 LiptonReduction]: Total number of compositions: 175 [2023-08-31 11:54:19,246 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:54:19,250 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:54:19,250 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:54:19,263 INFO L130 PetriNetUnfolder]: 0/13 cut-off events. [2023-08-31 11:54:19,264 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 11:54:19,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:54:19,265 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 11:54:19,266 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:54:19,271 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:54:19,271 INFO L85 PathProgramCache]: Analyzing trace with hash -951498406, now seen corresponding path program 1 times [2023-08-31 11:54:19,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:54:19,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808533787] [2023-08-31 11:54:19,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:54:19,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:54:19,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:54:19,390 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:54:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:54:19,443 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:54:19,444 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:54:19,445 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:54:19,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 11:54:19,447 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:54:19,452 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:54:19,453 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:54:19,453 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 11:54:19,538 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:54:19,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 276 transitions, 564 flow [2023-08-31 11:54:19,653 INFO L130 PetriNetUnfolder]: 19/298 cut-off events. [2023-08-31 11:54:19,653 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 11:54:19,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 298 events. 19/298 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 688 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 258. Up to 6 conditions per place. [2023-08-31 11:54:19,660 INFO L82 GeneralOperation]: Start removeDead. Operand has 264 places, 276 transitions, 564 flow [2023-08-31 11:54:19,663 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 264 places, 276 transitions, 564 flow [2023-08-31 11:54:19,663 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:54:19,663 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 264 places, 276 transitions, 564 flow [2023-08-31 11:54:19,664 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 264 places, 276 transitions, 564 flow [2023-08-31 11:54:19,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 264 places, 276 transitions, 564 flow [2023-08-31 11:54:19,706 INFO L130 PetriNetUnfolder]: 19/298 cut-off events. [2023-08-31 11:54:19,707 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 11:54:19,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 308 conditions, 298 events. 19/298 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 688 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 258. Up to 6 conditions per place. [2023-08-31 11:54:19,727 INFO L119 LiptonReduction]: Number of co-enabled transitions 36900 [2023-08-31 11:54:27,983 INFO L134 LiptonReduction]: Checked pairs total: 193829 [2023-08-31 11:54:27,984 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-31 11:54:27,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:54:27,993 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:54:27,994 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:54:28,001 INFO L130 PetriNetUnfolder]: 0/39 cut-off events. [2023-08-31 11:54:28,002 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 11:54:28,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:54:28,002 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 11:54:28,002 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:54:28,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:54:28,003 INFO L85 PathProgramCache]: Analyzing trace with hash 441150951, now seen corresponding path program 1 times [2023-08-31 11:54:28,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:54:28,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470638305] [2023-08-31 11:54:28,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:54:28,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:54:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:54:28,046 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:54:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:54:28,073 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:54:28,075 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:54:28,075 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:54:28,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 11:54:28,076 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:54:28,077 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:54:28,077 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:54:28,077 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 11:54:28,155 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:54:28,158 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 382 places, 400 transitions, 821 flow [2023-08-31 11:54:28,241 INFO L130 PetriNetUnfolder]: 28/434 cut-off events. [2023-08-31 11:54:28,245 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 11:54:28,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 434 events. 28/434 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1419 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 381. Up to 8 conditions per place. [2023-08-31 11:54:28,250 INFO L82 GeneralOperation]: Start removeDead. Operand has 382 places, 400 transitions, 821 flow [2023-08-31 11:54:28,254 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 382 places, 400 transitions, 821 flow [2023-08-31 11:54:28,254 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:54:28,254 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 382 places, 400 transitions, 821 flow [2023-08-31 11:54:28,255 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 382 places, 400 transitions, 821 flow [2023-08-31 11:54:28,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 382 places, 400 transitions, 821 flow [2023-08-31 11:54:28,348 INFO L130 PetriNetUnfolder]: 28/434 cut-off events. [2023-08-31 11:54:28,349 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 11:54:28,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 450 conditions, 434 events. 28/434 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1419 event pairs, 0 based on Foata normal form. 0/345 useless extension candidates. Maximal degree in co-relation 381. Up to 8 conditions per place. [2023-08-31 11:54:28,376 INFO L119 LiptonReduction]: Number of co-enabled transitions 101106 [2023-08-31 11:54:42,572 INFO L134 LiptonReduction]: Checked pairs total: 546921 [2023-08-31 11:54:42,572 INFO L136 LiptonReduction]: Total number of compositions: 181 [2023-08-31 11:54:42,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:54:42,575 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:54:42,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:54:42,580 INFO L130 PetriNetUnfolder]: 1/58 cut-off events. [2023-08-31 11:54:42,580 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 11:54:42,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:54:42,580 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 11:54:42,580 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:54:42,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:54:42,581 INFO L85 PathProgramCache]: Analyzing trace with hash -2116556774, now seen corresponding path program 1 times [2023-08-31 11:54:42,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:54:42,581 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046993976] [2023-08-31 11:54:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:54:42,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:54:42,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:54:42,610 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:54:42,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:54:42,642 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:54:42,642 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:54:42,642 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:54:42,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 11:54:42,643 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:54:42,643 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:54:42,643 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:54:42,644 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 11:54:42,729 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:54:42,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 524 transitions, 1080 flow [2023-08-31 11:54:42,964 INFO L130 PetriNetUnfolder]: 37/570 cut-off events. [2023-08-31 11:54:42,965 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 11:54:42,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 570 events. 37/570 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2226 event pairs, 0 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 504. Up to 10 conditions per place. [2023-08-31 11:54:42,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 500 places, 524 transitions, 1080 flow [2023-08-31 11:54:42,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 500 places, 524 transitions, 1080 flow [2023-08-31 11:54:42,978 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:54:42,979 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 500 places, 524 transitions, 1080 flow [2023-08-31 11:54:42,979 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 500 places, 524 transitions, 1080 flow [2023-08-31 11:54:42,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 500 places, 524 transitions, 1080 flow [2023-08-31 11:54:43,142 INFO L130 PetriNetUnfolder]: 37/570 cut-off events. [2023-08-31 11:54:43,142 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 11:54:43,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 593 conditions, 570 events. 37/570 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2226 event pairs, 0 based on Foata normal form. 0/452 useless extension candidates. Maximal degree in co-relation 504. Up to 10 conditions per place. [2023-08-31 11:54:43,194 INFO L119 LiptonReduction]: Number of co-enabled transitions 195816 [2023-08-31 11:54:57,509 INFO L134 LiptonReduction]: Checked pairs total: 1078543 [2023-08-31 11:54:57,510 INFO L136 LiptonReduction]: Total number of compositions: 238 [2023-08-31 11:54:57,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:54:57,512 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:54:57,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:54:57,523 INFO L130 PetriNetUnfolder]: 4/101 cut-off events. [2023-08-31 11:54:57,523 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 11:54:57,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:54:57,523 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 11:54:57,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:54:57,524 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:54:57,524 INFO L85 PathProgramCache]: Analyzing trace with hash 156461641, now seen corresponding path program 1 times [2023-08-31 11:54:57,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:54:57,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217284972] [2023-08-31 11:54:57,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:54:57,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:54:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:54:57,544 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:54:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:54:57,561 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:54:57,561 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:54:57,562 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:54:57,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 11:54:57,562 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:54:57,563 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:54:57,563 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:54:57,563 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 11:54:57,649 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:54:57,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 618 places, 648 transitions, 1341 flow [2023-08-31 11:54:57,841 INFO L130 PetriNetUnfolder]: 46/706 cut-off events. [2023-08-31 11:54:57,842 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 11:54:57,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 706 events. 46/706 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3089 event pairs, 0 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 627. Up to 12 conditions per place. [2023-08-31 11:54:57,861 INFO L82 GeneralOperation]: Start removeDead. Operand has 618 places, 648 transitions, 1341 flow [2023-08-31 11:54:57,870 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 618 places, 648 transitions, 1341 flow [2023-08-31 11:54:57,870 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:54:57,870 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 618 places, 648 transitions, 1341 flow [2023-08-31 11:54:57,871 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 618 places, 648 transitions, 1341 flow [2023-08-31 11:54:57,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 618 places, 648 transitions, 1341 flow [2023-08-31 11:54:58,082 INFO L130 PetriNetUnfolder]: 46/706 cut-off events. [2023-08-31 11:54:58,083 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 11:54:58,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737 conditions, 706 events. 46/706 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3089 event pairs, 0 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 627. Up to 12 conditions per place. [2023-08-31 11:54:58,167 INFO L119 LiptonReduction]: Number of co-enabled transitions 321030 [2023-08-31 11:55:14,299 INFO L134 LiptonReduction]: Checked pairs total: 1782116 [2023-08-31 11:55:14,299 INFO L136 LiptonReduction]: Total number of compositions: 289 [2023-08-31 11:55:14,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:55:14,302 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:55:14,302 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:55:14,315 INFO L130 PetriNetUnfolder]: 6/134 cut-off events. [2023-08-31 11:55:14,316 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 11:55:14,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:55:14,316 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:55:14,316 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:55:14,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:55:14,317 INFO L85 PathProgramCache]: Analyzing trace with hash 1126245518, now seen corresponding path program 1 times [2023-08-31 11:55:14,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:55:14,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [24556286] [2023-08-31 11:55:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:55:14,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:55:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:55:14,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:55:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:55:14,362 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:55:14,362 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:55:14,362 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:55:14,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 11:55:14,362 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:55:14,363 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:55:14,363 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:55:14,363 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 11:55:14,476 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:55:14,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 736 places, 772 transitions, 1604 flow [2023-08-31 11:55:14,742 INFO L130 PetriNetUnfolder]: 55/842 cut-off events. [2023-08-31 11:55:14,743 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 11:55:14,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 842 events. 55/842 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4008 event pairs, 0 based on Foata normal form. 0/666 useless extension candidates. Maximal degree in co-relation 750. Up to 14 conditions per place. [2023-08-31 11:55:14,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 736 places, 772 transitions, 1604 flow [2023-08-31 11:55:14,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 736 places, 772 transitions, 1604 flow [2023-08-31 11:55:14,778 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:55:14,778 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 736 places, 772 transitions, 1604 flow [2023-08-31 11:55:14,778 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 736 places, 772 transitions, 1604 flow [2023-08-31 11:55:14,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 736 places, 772 transitions, 1604 flow [2023-08-31 11:55:15,067 INFO L130 PetriNetUnfolder]: 55/842 cut-off events. [2023-08-31 11:55:15,068 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 11:55:15,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 882 conditions, 842 events. 55/842 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4008 event pairs, 0 based on Foata normal form. 0/666 useless extension candidates. Maximal degree in co-relation 750. Up to 14 conditions per place. [2023-08-31 11:55:15,182 INFO L119 LiptonReduction]: Number of co-enabled transitions 476748 [2023-08-31 11:55:42,293 INFO L134 LiptonReduction]: Checked pairs total: 2664958 [2023-08-31 11:55:42,294 INFO L136 LiptonReduction]: Total number of compositions: 344 [2023-08-31 11:55:42,296 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:55:42,296 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:55:42,297 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:55:42,317 INFO L130 PetriNetUnfolder]: 6/182 cut-off events. [2023-08-31 11:55:42,318 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 11:55:42,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:55:42,318 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:55:42,318 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:55:42,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:55:42,319 INFO L85 PathProgramCache]: Analyzing trace with hash 840576460, now seen corresponding path program 1 times [2023-08-31 11:55:42,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:55:42,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179919256] [2023-08-31 11:55:42,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:55:42,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:55:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:55:42,341 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:55:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:55:42,357 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:55:42,358 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:55:42,358 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:55:42,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 11:55:42,358 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:55:42,359 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:55:42,359 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:55:42,359 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 11:55:42,485 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:55:42,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 854 places, 896 transitions, 1869 flow [2023-08-31 11:55:42,807 INFO L130 PetriNetUnfolder]: 64/978 cut-off events. [2023-08-31 11:55:42,807 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 11:55:42,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 978 events. 64/978 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4936 event pairs, 0 based on Foata normal form. 0/773 useless extension candidates. Maximal degree in co-relation 873. Up to 16 conditions per place. [2023-08-31 11:55:42,839 INFO L82 GeneralOperation]: Start removeDead. Operand has 854 places, 896 transitions, 1869 flow [2023-08-31 11:55:42,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 854 places, 896 transitions, 1869 flow [2023-08-31 11:55:42,849 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:55:42,849 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 854 places, 896 transitions, 1869 flow [2023-08-31 11:55:42,849 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 854 places, 896 transitions, 1869 flow [2023-08-31 11:55:42,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 854 places, 896 transitions, 1869 flow [2023-08-31 11:55:43,224 INFO L130 PetriNetUnfolder]: 64/978 cut-off events. [2023-08-31 11:55:43,224 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 11:55:43,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1028 conditions, 978 events. 64/978 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 4936 event pairs, 0 based on Foata normal form. 0/773 useless extension candidates. Maximal degree in co-relation 873. Up to 16 conditions per place. [2023-08-31 11:55:43,319 INFO L119 LiptonReduction]: Number of co-enabled transitions 662970 [2023-08-31 11:56:06,661 INFO L134 LiptonReduction]: Checked pairs total: 3693702 [2023-08-31 11:56:06,661 INFO L136 LiptonReduction]: Total number of compositions: 388 [2023-08-31 11:56:06,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:56:06,664 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:56:06,664 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:56:06,691 INFO L130 PetriNetUnfolder]: 7/228 cut-off events. [2023-08-31 11:56:06,692 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 11:56:06,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:56:06,692 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:56:06,692 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:56:06,692 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:56:06,693 INFO L85 PathProgramCache]: Analyzing trace with hash -148049165, now seen corresponding path program 1 times [2023-08-31 11:56:06,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:56:06,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005746846] [2023-08-31 11:56:06,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:56:06,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:56:06,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:56:06,713 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:56:06,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:56:06,730 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:56:06,730 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:56:06,730 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:56:06,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 11:56:06,731 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:56:06,731 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:56:06,731 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:56:06,731 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 11:56:06,873 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:56:06,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 972 places, 1020 transitions, 2136 flow [2023-08-31 11:56:07,351 INFO L130 PetriNetUnfolder]: 73/1114 cut-off events. [2023-08-31 11:56:07,352 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 11:56:07,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 1114 events. 73/1114 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5847 event pairs, 0 based on Foata normal form. 0/880 useless extension candidates. Maximal degree in co-relation 1015. Up to 18 conditions per place. [2023-08-31 11:56:07,391 INFO L82 GeneralOperation]: Start removeDead. Operand has 972 places, 1020 transitions, 2136 flow [2023-08-31 11:56:07,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 972 places, 1020 transitions, 2136 flow [2023-08-31 11:56:07,402 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:56:07,402 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 972 places, 1020 transitions, 2136 flow [2023-08-31 11:56:07,403 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 972 places, 1020 transitions, 2136 flow [2023-08-31 11:56:07,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 972 places, 1020 transitions, 2136 flow [2023-08-31 11:56:07,869 INFO L130 PetriNetUnfolder]: 73/1114 cut-off events. [2023-08-31 11:56:07,869 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 11:56:07,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1175 conditions, 1114 events. 73/1114 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 5847 event pairs, 0 based on Foata normal form. 0/880 useless extension candidates. Maximal degree in co-relation 1015. Up to 18 conditions per place. [2023-08-31 11:56:08,088 INFO L119 LiptonReduction]: Number of co-enabled transitions 879696 [2023-08-31 11:56:41,589 INFO L134 LiptonReduction]: Checked pairs total: 4941124 [2023-08-31 11:56:41,590 INFO L136 LiptonReduction]: Total number of compositions: 444 [2023-08-31 11:56:41,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:56:41,592 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:56:41,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:56:41,637 INFO L130 PetriNetUnfolder]: 13/298 cut-off events. [2023-08-31 11:56:41,637 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 11:56:41,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:56:41,638 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:56:41,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:56:41,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:56:41,638 INFO L85 PathProgramCache]: Analyzing trace with hash -333240475, now seen corresponding path program 1 times [2023-08-31 11:56:41,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:56:41,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209277871] [2023-08-31 11:56:41,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:56:41,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:56:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:56:41,660 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:56:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:56:41,679 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:56:41,680 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:56:41,680 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:56:41,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 11:56:41,683 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:56:41,684 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:56:41,684 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:56:41,685 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 11:56:41,862 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:56:41,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1090 places, 1144 transitions, 2405 flow [2023-08-31 11:56:42,418 INFO L130 PetriNetUnfolder]: 82/1250 cut-off events. [2023-08-31 11:56:42,418 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 11:56:42,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 1250 events. 82/1250 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 6806 event pairs, 0 based on Foata normal form. 0/987 useless extension candidates. Maximal degree in co-relation 1162. Up to 20 conditions per place. [2023-08-31 11:56:42,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 1090 places, 1144 transitions, 2405 flow [2023-08-31 11:56:42,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1090 places, 1144 transitions, 2405 flow [2023-08-31 11:56:42,469 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:56:42,469 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1090 places, 1144 transitions, 2405 flow [2023-08-31 11:56:42,469 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1090 places, 1144 transitions, 2405 flow [2023-08-31 11:56:42,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1090 places, 1144 transitions, 2405 flow [2023-08-31 11:56:43,285 INFO L130 PetriNetUnfolder]: 82/1250 cut-off events. [2023-08-31 11:56:43,286 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 11:56:43,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1323 conditions, 1250 events. 82/1250 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 6806 event pairs, 0 based on Foata normal form. 0/987 useless extension candidates. Maximal degree in co-relation 1162. Up to 20 conditions per place. [2023-08-31 11:56:43,463 INFO L119 LiptonReduction]: Number of co-enabled transitions 1126926 [2023-08-31 11:57:27,605 INFO L134 LiptonReduction]: Checked pairs total: 6308099 [2023-08-31 11:57:27,605 INFO L136 LiptonReduction]: Total number of compositions: 494 [2023-08-31 11:57:27,607 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:57:27,608 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:57:27,608 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:57:27,654 INFO L130 PetriNetUnfolder]: 15/361 cut-off events. [2023-08-31 11:57:27,655 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 11:57:27,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:57:27,655 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:57:27,655 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:57:27,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:57:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash 100037590, now seen corresponding path program 1 times [2023-08-31 11:57:27,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:57:27,655 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405317692] [2023-08-31 11:57:27,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:57:27,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:57:27,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:57:27,676 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:57:27,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:57:27,697 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:57:27,697 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:57:27,697 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:57:27,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 11:57:27,698 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:57:27,698 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:57:27,698 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:57:27,698 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 11:57:27,898 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:57:27,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1208 places, 1268 transitions, 2676 flow [2023-08-31 11:57:28,480 INFO L130 PetriNetUnfolder]: 91/1386 cut-off events. [2023-08-31 11:57:28,480 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 11:57:28,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1472 conditions, 1386 events. 91/1386 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 7748 event pairs, 0 based on Foata normal form. 0/1094 useless extension candidates. Maximal degree in co-relation 1310. Up to 22 conditions per place. [2023-08-31 11:57:28,522 INFO L82 GeneralOperation]: Start removeDead. Operand has 1208 places, 1268 transitions, 2676 flow [2023-08-31 11:57:28,534 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1208 places, 1268 transitions, 2676 flow [2023-08-31 11:57:28,534 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:57:28,534 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1208 places, 1268 transitions, 2676 flow [2023-08-31 11:57:28,534 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1208 places, 1268 transitions, 2676 flow [2023-08-31 11:57:28,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1208 places, 1268 transitions, 2676 flow [2023-08-31 11:57:29,181 INFO L130 PetriNetUnfolder]: 91/1386 cut-off events. [2023-08-31 11:57:29,181 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 11:57:29,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1472 conditions, 1386 events. 91/1386 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 7748 event pairs, 0 based on Foata normal form. 0/1094 useless extension candidates. Maximal degree in co-relation 1310. Up to 22 conditions per place. [2023-08-31 11:57:29,493 INFO L119 LiptonReduction]: Number of co-enabled transitions 1404660 [2023-08-31 11:58:00,916 INFO L134 LiptonReduction]: Checked pairs total: 7883786 [2023-08-31 11:58:00,916 INFO L136 LiptonReduction]: Total number of compositions: 548 [2023-08-31 11:58:00,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:58:00,918 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:58:00,919 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:58:01,007 INFO L130 PetriNetUnfolder]: 19/436 cut-off events. [2023-08-31 11:58:01,007 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 11:58:01,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:58:01,007 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:58:01,007 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:58:01,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:58:01,008 INFO L85 PathProgramCache]: Analyzing trace with hash -1214501530, now seen corresponding path program 1 times [2023-08-31 11:58:01,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:58:01,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599502544] [2023-08-31 11:58:01,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:58:01,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:58:01,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:58:01,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:58:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:58:01,074 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:58:01,075 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:58:01,075 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:58:01,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 11:58:01,075 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:58:01,076 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:58:01,076 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:58:01,076 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 11:58:01,255 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:58:01,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1326 places, 1392 transitions, 2949 flow [2023-08-31 11:58:01,890 INFO L130 PetriNetUnfolder]: 100/1522 cut-off events. [2023-08-31 11:58:01,890 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 11:58:01,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1622 conditions, 1522 events. 100/1522 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 8691 event pairs, 0 based on Foata normal form. 0/1201 useless extension candidates. Maximal degree in co-relation 1459. Up to 24 conditions per place. [2023-08-31 11:58:01,954 INFO L82 GeneralOperation]: Start removeDead. Operand has 1326 places, 1392 transitions, 2949 flow [2023-08-31 11:58:01,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1326 places, 1392 transitions, 2949 flow [2023-08-31 11:58:01,969 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:58:01,969 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1326 places, 1392 transitions, 2949 flow [2023-08-31 11:58:01,969 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1326 places, 1392 transitions, 2949 flow [2023-08-31 11:58:01,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1326 places, 1392 transitions, 2949 flow [2023-08-31 11:58:02,689 INFO L130 PetriNetUnfolder]: 100/1522 cut-off events. [2023-08-31 11:58:02,690 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 11:58:02,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1622 conditions, 1522 events. 100/1522 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 8691 event pairs, 0 based on Foata normal form. 0/1201 useless extension candidates. Maximal degree in co-relation 1459. Up to 24 conditions per place. [2023-08-31 11:58:03,203 INFO L119 LiptonReduction]: Number of co-enabled transitions 1712898 [2023-08-31 11:58:34,379 INFO L134 LiptonReduction]: Checked pairs total: 9554610 [2023-08-31 11:58:34,379 INFO L136 LiptonReduction]: Total number of compositions: 594 [2023-08-31 11:58:34,381 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:58:34,382 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:58:34,382 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:58:34,463 INFO L130 PetriNetUnfolder]: 16/499 cut-off events. [2023-08-31 11:58:34,463 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 11:58:34,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:58:34,463 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:58:34,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:58:34,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:58:34,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1896354865, now seen corresponding path program 1 times [2023-08-31 11:58:34,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:58:34,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601947778] [2023-08-31 11:58:34,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:58:34,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:58:34,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:58:34,491 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:58:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:58:34,514 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:58:34,514 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:58:34,514 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:58:34,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 11:58:34,515 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:58:34,515 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:58:34,515 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:58:34,515 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 11:58:34,805 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:58:34,834 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1444 places, 1516 transitions, 3224 flow [2023-08-31 11:58:35,920 INFO L130 PetriNetUnfolder]: 109/1658 cut-off events. [2023-08-31 11:58:35,920 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 11:58:35,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1773 conditions, 1658 events. 109/1658 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 9638 event pairs, 0 based on Foata normal form. 0/1308 useless extension candidates. Maximal degree in co-relation 1609. Up to 26 conditions per place. [2023-08-31 11:58:35,992 INFO L82 GeneralOperation]: Start removeDead. Operand has 1444 places, 1516 transitions, 3224 flow [2023-08-31 11:58:36,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1444 places, 1516 transitions, 3224 flow [2023-08-31 11:58:36,010 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:58:36,010 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1444 places, 1516 transitions, 3224 flow [2023-08-31 11:58:36,011 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1444 places, 1516 transitions, 3224 flow [2023-08-31 11:58:36,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1444 places, 1516 transitions, 3224 flow [2023-08-31 11:58:36,894 INFO L130 PetriNetUnfolder]: 109/1658 cut-off events. [2023-08-31 11:58:36,895 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 11:58:36,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1773 conditions, 1658 events. 109/1658 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 9638 event pairs, 0 based on Foata normal form. 0/1308 useless extension candidates. Maximal degree in co-relation 1609. Up to 26 conditions per place. [2023-08-31 11:58:37,228 INFO L119 LiptonReduction]: Number of co-enabled transitions 2051640 [2023-08-31 11:59:22,813 INFO L134 LiptonReduction]: Checked pairs total: 11579471 [2023-08-31 11:59:22,813 INFO L136 LiptonReduction]: Total number of compositions: 657 [2023-08-31 11:59:22,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:59:22,818 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:59:22,818 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:59:22,924 INFO L130 PetriNetUnfolder]: 23/592 cut-off events. [2023-08-31 11:59:22,924 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 11:59:22,924 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:59:22,924 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:59:22,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:59:22,925 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:59:22,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1071743157, now seen corresponding path program 1 times [2023-08-31 11:59:22,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:59:22,925 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39469281] [2023-08-31 11:59:22,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:59:22,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:59:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:59:22,952 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:59:22,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:59:22,980 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:59:22,980 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:59:22,980 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:59:22,981 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 11:59:22,981 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:59:22,981 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:59:22,981 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:59:22,982 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 11:59:23,150 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:59:23,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1562 places, 1640 transitions, 3501 flow [2023-08-31 11:59:24,183 INFO L130 PetriNetUnfolder]: 118/1794 cut-off events. [2023-08-31 11:59:24,183 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 11:59:24,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1925 conditions, 1794 events. 118/1794 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 10560 event pairs, 0 based on Foata normal form. 0/1415 useless extension candidates. Maximal degree in co-relation 1760. Up to 28 conditions per place. [2023-08-31 11:59:24,240 INFO L82 GeneralOperation]: Start removeDead. Operand has 1562 places, 1640 transitions, 3501 flow [2023-08-31 11:59:24,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1562 places, 1640 transitions, 3501 flow [2023-08-31 11:59:24,256 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:59:24,256 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1562 places, 1640 transitions, 3501 flow [2023-08-31 11:59:24,256 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1562 places, 1640 transitions, 3501 flow [2023-08-31 11:59:24,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1562 places, 1640 transitions, 3501 flow [2023-08-31 11:59:25,494 INFO L130 PetriNetUnfolder]: 118/1794 cut-off events. [2023-08-31 11:59:25,494 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 11:59:25,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1925 conditions, 1794 events. 118/1794 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 10560 event pairs, 0 based on Foata normal form. 0/1415 useless extension candidates. Maximal degree in co-relation 1760. Up to 28 conditions per place. [2023-08-31 11:59:25,940 INFO L119 LiptonReduction]: Number of co-enabled transitions 2420886 [2023-08-31 12:00:05,652 INFO L134 LiptonReduction]: Checked pairs total: 13659562 [2023-08-31 12:00:05,652 INFO L136 LiptonReduction]: Total number of compositions: 710 [2023-08-31 12:00:05,656 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:00:05,660 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:00:05,660 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:00:05,868 INFO L130 PetriNetUnfolder]: 28/692 cut-off events. [2023-08-31 12:00:05,868 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 12:00:05,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:00:05,868 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:00:05,869 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:00:05,869 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:00:05,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1109706695, now seen corresponding path program 1 times [2023-08-31 12:00:05,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:00:05,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671220696] [2023-08-31 12:00:05,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:00:05,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:00:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:00:05,923 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:00:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:00:05,969 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:00:05,970 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:00:05,970 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:00:05,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 12:00:05,970 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:00:05,971 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:00:05,972 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:00:05,972 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-31 12:00:06,203 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:00:06,215 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1680 places, 1764 transitions, 3780 flow [2023-08-31 12:00:07,759 INFO L130 PetriNetUnfolder]: 127/1930 cut-off events. [2023-08-31 12:00:07,759 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 12:00:07,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 1930 events. 127/1930 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 11494 event pairs, 0 based on Foata normal form. 0/1522 useless extension candidates. Maximal degree in co-relation 1912. Up to 30 conditions per place. [2023-08-31 12:00:07,909 INFO L82 GeneralOperation]: Start removeDead. Operand has 1680 places, 1764 transitions, 3780 flow [2023-08-31 12:00:07,944 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1680 places, 1764 transitions, 3780 flow [2023-08-31 12:00:07,944 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:00:07,944 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1680 places, 1764 transitions, 3780 flow [2023-08-31 12:00:07,945 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1680 places, 1764 transitions, 3780 flow [2023-08-31 12:00:07,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1680 places, 1764 transitions, 3780 flow [2023-08-31 12:00:09,380 INFO L130 PetriNetUnfolder]: 127/1930 cut-off events. [2023-08-31 12:00:09,381 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 12:00:09,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2078 conditions, 1930 events. 127/1930 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 11494 event pairs, 0 based on Foata normal form. 0/1522 useless extension candidates. Maximal degree in co-relation 1912. Up to 30 conditions per place. [2023-08-31 12:00:10,391 INFO L119 LiptonReduction]: Number of co-enabled transitions 2820636 [2023-08-31 12:01:46,892 INFO L134 LiptonReduction]: Checked pairs total: 15872872 [2023-08-31 12:01:46,892 INFO L136 LiptonReduction]: Total number of compositions: 761 [2023-08-31 12:01:46,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:01:46,894 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:01:46,894 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:01:47,066 INFO L130 PetriNetUnfolder]: 32/781 cut-off events. [2023-08-31 12:01:47,066 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 12:01:47,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:01:47,066 INFO L208 CegarLoopForPetriNet]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:01:47,066 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:01:47,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:01:47,067 INFO L85 PathProgramCache]: Analyzing trace with hash 17428944, now seen corresponding path program 1 times [2023-08-31 12:01:47,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:01:47,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601490223] [2023-08-31 12:01:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:01:47,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:01:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:01:47,110 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:01:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:01:47,143 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:01:47,143 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:01:47,143 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:01:47,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 12:01:47,144 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:01:47,144 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:01:47,144 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:01:47,144 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-08-31 12:01:47,387 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:01:47,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1798 places, 1888 transitions, 4061 flow [2023-08-31 12:01:48,863 INFO L130 PetriNetUnfolder]: 136/2066 cut-off events. [2023-08-31 12:01:48,863 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 12:01:48,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 2066 events. 136/2066 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 12444 event pairs, 0 based on Foata normal form. 0/1629 useless extension candidates. Maximal degree in co-relation 2065. Up to 32 conditions per place. [2023-08-31 12:01:48,952 INFO L82 GeneralOperation]: Start removeDead. Operand has 1798 places, 1888 transitions, 4061 flow [2023-08-31 12:01:48,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1798 places, 1888 transitions, 4061 flow [2023-08-31 12:01:48,975 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:01:48,975 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1798 places, 1888 transitions, 4061 flow [2023-08-31 12:01:48,975 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1798 places, 1888 transitions, 4061 flow [2023-08-31 12:01:48,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1798 places, 1888 transitions, 4061 flow [2023-08-31 12:01:50,376 INFO L130 PetriNetUnfolder]: 136/2066 cut-off events. [2023-08-31 12:01:50,376 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 12:01:50,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 2066 events. 136/2066 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 12444 event pairs, 0 based on Foata normal form. 0/1629 useless extension candidates. Maximal degree in co-relation 2065. Up to 32 conditions per place. [2023-08-31 12:01:51,066 INFO L119 LiptonReduction]: Number of co-enabled transitions 3250890 [2023-08-31 12:02:47,547 INFO L134 LiptonReduction]: Checked pairs total: 18287435 [2023-08-31 12:02:47,547 INFO L136 LiptonReduction]: Total number of compositions: 822 [2023-08-31 12:02:47,549 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:02:47,549 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:02:47,550 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:02:47,756 INFO L130 PetriNetUnfolder]: 39/866 cut-off events. [2023-08-31 12:02:47,756 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 12:02:47,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:02:47,756 INFO L208 CegarLoopForPetriNet]: trace histogram [16, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:02:47,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:02:47,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:02:47,757 INFO L85 PathProgramCache]: Analyzing trace with hash 707638765, now seen corresponding path program 1 times [2023-08-31 12:02:47,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:02:47,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068766657] [2023-08-31 12:02:47,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:02:47,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:02:47,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:02:47,785 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:02:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:02:47,813 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:02:47,813 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:02:47,813 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:02:47,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 12:02:47,814 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:02:47,814 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:02:47,814 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:02:47,814 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-08-31 12:02:48,053 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:02:48,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1916 places, 2012 transitions, 4344 flow [2023-08-31 12:02:49,898 INFO L130 PetriNetUnfolder]: 145/2202 cut-off events. [2023-08-31 12:02:49,898 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 12:02:50,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2387 conditions, 2202 events. 145/2202 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 13354 event pairs, 0 based on Foata normal form. 0/1736 useless extension candidates. Maximal degree in co-relation 2219. Up to 34 conditions per place. [2023-08-31 12:02:50,062 INFO L82 GeneralOperation]: Start removeDead. Operand has 1916 places, 2012 transitions, 4344 flow [2023-08-31 12:02:50,098 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1916 places, 2012 transitions, 4344 flow [2023-08-31 12:02:50,099 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:02:50,099 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1916 places, 2012 transitions, 4344 flow [2023-08-31 12:02:50,099 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1916 places, 2012 transitions, 4344 flow [2023-08-31 12:02:50,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1916 places, 2012 transitions, 4344 flow [2023-08-31 12:02:52,639 INFO L130 PetriNetUnfolder]: 145/2202 cut-off events. [2023-08-31 12:02:52,639 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 12:02:52,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2387 conditions, 2202 events. 145/2202 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 13354 event pairs, 0 based on Foata normal form. 0/1736 useless extension candidates. Maximal degree in co-relation 2219. Up to 34 conditions per place. [2023-08-31 12:02:53,607 INFO L119 LiptonReduction]: Number of co-enabled transitions 3711648 [2023-08-31 12:03:59,313 INFO L134 LiptonReduction]: Checked pairs total: 21055422 [2023-08-31 12:03:59,314 INFO L136 LiptonReduction]: Total number of compositions: 871 [2023-08-31 12:03:59,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:03:59,316 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:03:59,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:03:59,734 INFO L130 PetriNetUnfolder]: 44/961 cut-off events. [2023-08-31 12:03:59,734 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 12:03:59,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:03:59,734 INFO L208 CegarLoopForPetriNet]: trace histogram [17, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:03:59,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:03:59,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:03:59,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1864643420, now seen corresponding path program 1 times [2023-08-31 12:03:59,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:03:59,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2089448683] [2023-08-31 12:03:59,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:03:59,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:03:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:03:59,882 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:03:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:03:59,914 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:03:59,915 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:03:59,915 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:03:59,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 12:03:59,915 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:03:59,916 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:03:59,916 WARN L233 ceAbstractionStarter]: 16 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:03:59,916 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 17 thread instances. [2023-08-31 12:04:00,199 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:04:00,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2034 places, 2136 transitions, 4629 flow [2023-08-31 12:04:02,618 INFO L130 PetriNetUnfolder]: 154/2338 cut-off events. [2023-08-31 12:04:02,618 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 12:04:02,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 2338 events. 154/2338 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 14332 event pairs, 0 based on Foata normal form. 0/1843 useless extension candidates. Maximal degree in co-relation 2374. Up to 36 conditions per place. [2023-08-31 12:04:02,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 2034 places, 2136 transitions, 4629 flow [2023-08-31 12:04:02,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2034 places, 2136 transitions, 4629 flow [2023-08-31 12:04:02,826 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:04:02,827 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2034 places, 2136 transitions, 4629 flow [2023-08-31 12:04:02,827 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2034 places, 2136 transitions, 4629 flow [2023-08-31 12:04:02,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2034 places, 2136 transitions, 4629 flow [2023-08-31 12:04:05,241 INFO L130 PetriNetUnfolder]: 154/2338 cut-off events. [2023-08-31 12:04:05,242 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 12:04:05,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2543 conditions, 2338 events. 154/2338 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 14332 event pairs, 0 based on Foata normal form. 0/1843 useless extension candidates. Maximal degree in co-relation 2374. Up to 36 conditions per place. [2023-08-31 12:04:06,318 INFO L119 LiptonReduction]: Number of co-enabled transitions 4202910 [2023-08-31 12:05:11,057 INFO L134 LiptonReduction]: Checked pairs total: 23763044 [2023-08-31 12:05:11,057 INFO L136 LiptonReduction]: Total number of compositions: 913 [2023-08-31 12:05:11,060 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:05:11,060 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:05:11,060 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:05:11,577 INFO L130 PetriNetUnfolder]: 50/1041 cut-off events. [2023-08-31 12:05:11,577 INFO L131 PetriNetUnfolder]: For 952/952 co-relation queries the response was YES. [2023-08-31 12:05:11,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:05:11,578 INFO L208 CegarLoopForPetriNet]: trace histogram [18, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:05:11,578 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:05:11,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:05:11,578 INFO L85 PathProgramCache]: Analyzing trace with hash -308644640, now seen corresponding path program 1 times [2023-08-31 12:05:11,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:05:11,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760646691] [2023-08-31 12:05:11,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:05:11,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:05:11,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:11,633 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:05:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:05:11,675 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:05:11,676 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:05:11,676 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:05:11,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 12:05:11,676 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:05:11,677 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:05:11,677 WARN L233 ceAbstractionStarter]: 17 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:05:11,677 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 18 thread instances. [2023-08-31 12:05:11,969 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:05:11,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2152 places, 2260 transitions, 4916 flow [2023-08-31 12:05:15,077 INFO L130 PetriNetUnfolder]: 163/2474 cut-off events. [2023-08-31 12:05:15,078 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 12:05:15,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 2474 events. 163/2474 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 15267 event pairs, 0 based on Foata normal form. 0/1950 useless extension candidates. Maximal degree in co-relation 2530. Up to 38 conditions per place. [2023-08-31 12:05:15,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 2152 places, 2260 transitions, 4916 flow [2023-08-31 12:05:15,302 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2152 places, 2260 transitions, 4916 flow [2023-08-31 12:05:15,302 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:05:15,302 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2152 places, 2260 transitions, 4916 flow [2023-08-31 12:05:15,303 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2152 places, 2260 transitions, 4916 flow [2023-08-31 12:05:15,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2152 places, 2260 transitions, 4916 flow [2023-08-31 12:05:18,424 INFO L130 PetriNetUnfolder]: 163/2474 cut-off events. [2023-08-31 12:05:18,424 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 12:05:18,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2700 conditions, 2474 events. 163/2474 cut-off events. For 1122/1122 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 15267 event pairs, 0 based on Foata normal form. 0/1950 useless extension candidates. Maximal degree in co-relation 2530. Up to 38 conditions per place. [2023-08-31 12:05:19,731 INFO L119 LiptonReduction]: Number of co-enabled transitions 4724676 [2023-08-31 12:07:04,872 INFO L134 LiptonReduction]: Checked pairs total: 26579742 [2023-08-31 12:07:04,872 INFO L136 LiptonReduction]: Total number of compositions: 970 [2023-08-31 12:07:04,873 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 12:07:04,874 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;@7a651afa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 12:07:04,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 12:07:05,297 INFO L130 PetriNetUnfolder]: 50/1123 cut-off events. [2023-08-31 12:07:05,297 INFO L131 PetriNetUnfolder]: For 1122/1122 co-relation queries the response was YES. [2023-08-31 12:07:05,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 12:07:05,297 INFO L208 CegarLoopForPetriNet]: trace histogram [19, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 12:07:05,298 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 12:07:05,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 12:07:05,298 INFO L85 PathProgramCache]: Analyzing trace with hash 647957867, now seen corresponding path program 1 times [2023-08-31 12:07:05,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 12:07:05,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755872242] [2023-08-31 12:07:05,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 12:07:05,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 12:07:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:05,332 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 12:07:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 12:07:05,365 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 12:07:05,365 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 12:07:05,366 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 12:07:05,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 12:07:05,366 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 12:07:05,366 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 12:07:05,366 WARN L233 ceAbstractionStarter]: 18 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 12:07:05,366 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 19 thread instances. [2023-08-31 12:07:05,606 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 12:07:05,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2270 places, 2384 transitions, 5205 flow [2023-08-31 12:07:07,879 INFO L130 PetriNetUnfolder]: 172/2610 cut-off events. [2023-08-31 12:07:07,879 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 12:07:08,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2858 conditions, 2610 events. 172/2610 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 16232 event pairs, 0 based on Foata normal form. 0/2057 useless extension candidates. Maximal degree in co-relation 2687. Up to 40 conditions per place. [2023-08-31 12:07:08,016 INFO L82 GeneralOperation]: Start removeDead. Operand has 2270 places, 2384 transitions, 5205 flow [2023-08-31 12:07:08,045 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2270 places, 2384 transitions, 5205 flow [2023-08-31 12:07:08,046 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 12:07:08,046 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2270 places, 2384 transitions, 5205 flow [2023-08-31 12:07:08,046 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2270 places, 2384 transitions, 5205 flow [2023-08-31 12:07:08,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2270 places, 2384 transitions, 5205 flow [2023-08-31 12:07:10,776 INFO L130 PetriNetUnfolder]: 172/2610 cut-off events. [2023-08-31 12:07:10,777 INFO L131 PetriNetUnfolder]: For 1311/1311 co-relation queries the response was YES. [2023-08-31 12:07:10,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2858 conditions, 2610 events. 172/2610 cut-off events. For 1311/1311 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 16232 event pairs, 0 based on Foata normal form. 0/2057 useless extension candidates. Maximal degree in co-relation 2687. Up to 40 conditions per place. [2023-08-31 12:07:12,273 INFO L119 LiptonReduction]: Number of co-enabled transitions 5276946 Killed by 15