./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.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/26_stack_cas_longer-1.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 e12b29ddb474fc17e74c2b71eb245022640b1de10fdbbb130c7f22e13cd3653f --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 11:40:28,503 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 11:40:28,512 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 11:40:28,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 11:40:28,538 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 11:40:28,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 11:40:28,542 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 11:40:28,544 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 11:40:28,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 11:40:28,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 11:40:28,552 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 11:40:28,554 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 11:40:28,554 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 11:40:28,556 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 11:40:28,557 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 11:40:28,558 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 11:40:28,559 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 11:40:28,560 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 11:40:28,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 11:40:28,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 11:40:28,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 11:40:28,578 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 11:40:28,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 11:40:28,580 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 11:40:28,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 11:40:28,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 11:40:28,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 11:40:28,588 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 11:40:28,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 11:40:28,589 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 11:40:28,589 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 11:40:28,593 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 11:40:28,594 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 11:40:28,595 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 11:40:28,596 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 11:40:28,596 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 11:40:28,596 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 11:40:28,596 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 11:40:28,597 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 11:40:28,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 11:40:28,598 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 11:40:28,599 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 11:40:28,628 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 11:40:28,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 11:40:28,629 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 11:40:28,629 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 11:40:28,630 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 11:40:28,630 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 11:40:28,630 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 11:40:28,630 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 11:40:28,631 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 11:40:28,631 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 11:40:28,631 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 11:40:28,632 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 11:40:28,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 11:40:28,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 11:40:28,632 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 11:40:28,632 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 11:40:28,632 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 11:40:28,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 11:40:28,633 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 11:40:28,633 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 11:40:28,633 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 11:40:28,633 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 11:40:28,633 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 11:40:28,633 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 11:40:28,634 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 11:40:28,634 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 11:40:28,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 11:40:28,634 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 11:40:28,634 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 11:40:28,634 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 11:40:28,635 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 11:40:28,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 11:40:28,635 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 11:40:28,635 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 11:40:28,635 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 11:40:28,636 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 11:40:28,636 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 11:40:28,636 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e12b29ddb474fc17e74c2b71eb245022640b1de10fdbbb130c7f22e13cd3653f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 11:40:28,889 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 11:40:28,905 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 11:40:28,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 11:40:28,907 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 11:40:28,907 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 11:40:28,908 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2023-08-31 11:40:29,735 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 11:40:29,973 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 11:40:29,973 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i [2023-08-31 11:40:29,986 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72899960/a99f6811fd5948ad98dad37001198808/FLAGd4cf66e18 [2023-08-31 11:40:29,998 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e72899960/a99f6811fd5948ad98dad37001198808 [2023-08-31 11:40:30,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 11:40:30,001 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 11:40:30,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 11:40:30,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 11:40:30,004 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 11:40:30,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:40:29" (1/1) ... [2023-08-31 11:40:30,005 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a879044 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:30, skipping insertion in model container [2023-08-31 11:40:30,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 11:40:29" (1/1) ... [2023-08-31 11:40:30,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 11:40:30,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 11:40:30,274 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2023-08-31 11:40:30,280 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 11:40:30,287 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 11:40:30,335 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/26_stack_cas_longer-1.i[31166,31179] [2023-08-31 11:40:30,337 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 11:40:30,372 INFO L208 MainTranslator]: Completed translation [2023-08-31 11:40:30,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:30 WrapperNode [2023-08-31 11:40:30,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 11:40:30,374 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 11:40:30,374 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 11:40:30,374 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 11:40:30,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:30" (1/1) ... [2023-08-31 11:40:30,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:30" (1/1) ... [2023-08-31 11:40:30,434 INFO L138 Inliner]: procedures = 177, calls = 47, calls flagged for inlining = 16, calls inlined = 19, statements flattened = 320 [2023-08-31 11:40:30,436 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 11:40:30,437 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 11:40:30,437 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 11:40:30,437 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 11:40:30,443 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:30" (1/1) ... [2023-08-31 11:40:30,443 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:30" (1/1) ... [2023-08-31 11:40:30,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:30" (1/1) ... [2023-08-31 11:40:30,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:30" (1/1) ... [2023-08-31 11:40:30,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:30" (1/1) ... [2023-08-31 11:40:30,475 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:30" (1/1) ... [2023-08-31 11:40:30,476 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:30" (1/1) ... [2023-08-31 11:40:30,478 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:30" (1/1) ... [2023-08-31 11:40:30,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 11:40:30,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 11:40:30,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 11:40:30,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 11:40:30,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:30" (1/1) ... [2023-08-31 11:40:30,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 11:40:30,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 11:40:30,508 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 11:40:30,522 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 11:40:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 11:40:30,536 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-31 11:40:30,539 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-31 11:40:30,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 11:40:30,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 11:40:30,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 11:40:30,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 11:40:30,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 11:40:30,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 11:40:30,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 11:40:30,541 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 11:40:30,678 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 11:40:30,690 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 11:40:31,124 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 11:40:31,307 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 11:40:31,307 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-31 11:40:31,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:40:31 BoogieIcfgContainer [2023-08-31 11:40:31,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 11:40:31,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 11:40:31,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 11:40:31,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 11:40:31,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 11:40:29" (1/3) ... [2023-08-31 11:40:31,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b6e70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:40:31, skipping insertion in model container [2023-08-31 11:40:31,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 11:40:30" (2/3) ... [2023-08-31 11:40:31,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8b6e70f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 11:40:31, skipping insertion in model container [2023-08-31 11:40:31,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 11:40:31" (3/3) ... [2023-08-31 11:40:31,315 INFO L112 eAbstractionObserver]: Analyzing ICFG 26_stack_cas_longer-1.i [2023-08-31 11:40:31,321 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 11:40:31,327 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 11:40:31,328 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-31 11:40:31,328 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 11:40:31,402 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:40:31,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 181 transitions, 367 flow [2023-08-31 11:40:31,492 INFO L130 PetriNetUnfolder]: 11/191 cut-off events. [2023-08-31 11:40:31,493 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 11:40:31,497 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 191 events. 11/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 243 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 157. Up to 4 conditions per place. [2023-08-31 11:40:31,498 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 181 transitions, 367 flow [2023-08-31 11:40:31,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 181 transitions, 367 flow [2023-08-31 11:40:31,505 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:40:31,519 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 181 transitions, 367 flow [2023-08-31 11:40:31,520 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 181 transitions, 367 flow [2023-08-31 11:40:31,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 181 transitions, 367 flow [2023-08-31 11:40:31,552 INFO L130 PetriNetUnfolder]: 11/191 cut-off events. [2023-08-31 11:40:31,552 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 11:40:31,555 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196 conditions, 191 events. 11/191 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 243 event pairs, 0 based on Foata normal form. 0/152 useless extension candidates. Maximal degree in co-relation 157. Up to 4 conditions per place. [2023-08-31 11:40:31,556 INFO L119 LiptonReduction]: Number of co-enabled transitions 3770 [2023-08-31 11:40:37,035 INFO L134 LiptonReduction]: Checked pairs total: 4399 [2023-08-31 11:40:37,035 INFO L136 LiptonReduction]: Total number of compositions: 195 [2023-08-31 11:40:37,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:40:37,054 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:40:37,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:40:37,063 INFO L130 PetriNetUnfolder]: 2/20 cut-off events. [2023-08-31 11:40:37,063 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 11:40:37,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:40:37,067 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 11:40:37,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:40:37,070 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:40:37,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1874194445, now seen corresponding path program 1 times [2023-08-31 11:40:37,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:40:37,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088292197] [2023-08-31 11:40:37,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:40:37,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:40:37,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:40:37,142 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:40:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:40:37,168 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:40:37,171 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:40:37,171 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:40:37,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 11:40:37,173 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:40:37,177 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:40:37,178 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:40:37,178 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 11:40:37,273 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:40:37,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 327 transitions, 666 flow [2023-08-31 11:40:37,325 INFO L130 PetriNetUnfolder]: 21/349 cut-off events. [2023-08-31 11:40:37,325 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 11:40:37,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 349 events. 21/349 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 949 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 302. Up to 6 conditions per place. [2023-08-31 11:40:37,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 313 places, 327 transitions, 666 flow [2023-08-31 11:40:37,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 313 places, 327 transitions, 666 flow [2023-08-31 11:40:37,331 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:40:37,331 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 313 places, 327 transitions, 666 flow [2023-08-31 11:40:37,331 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 313 places, 327 transitions, 666 flow [2023-08-31 11:40:37,331 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 313 places, 327 transitions, 666 flow [2023-08-31 11:40:37,379 INFO L130 PetriNetUnfolder]: 21/349 cut-off events. [2023-08-31 11:40:37,379 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 11:40:37,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 359 conditions, 349 events. 21/349 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 949 event pairs, 0 based on Foata normal form. 0/273 useless extension candidates. Maximal degree in co-relation 302. Up to 6 conditions per place. [2023-08-31 11:40:37,397 INFO L119 LiptonReduction]: Number of co-enabled transitions 49880 [2023-08-31 11:40:42,592 INFO L134 LiptonReduction]: Checked pairs total: 221986 [2023-08-31 11:40:42,592 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-08-31 11:40:42,593 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:40:42,594 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;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:40:42,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:40:42,597 INFO L130 PetriNetUnfolder]: 1/37 cut-off events. [2023-08-31 11:40:42,597 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 11:40:42,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:40:42,598 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 11:40:42,598 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:40:42,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:40:42,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1770387562, now seen corresponding path program 1 times [2023-08-31 11:40:42,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:40:42,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175093736] [2023-08-31 11:40:42,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:40:42,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:40:42,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:40:42,632 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:40:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:40:42,650 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:40:42,650 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:40:42,650 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:40:42,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 11:40:42,651 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:40:42,651 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:40:42,651 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:40:42,651 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 11:40:42,728 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:40:42,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 473 transitions, 967 flow [2023-08-31 11:40:42,810 INFO L130 PetriNetUnfolder]: 31/507 cut-off events. [2023-08-31 11:40:42,810 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 11:40:42,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 507 events. 31/507 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1855 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 447. Up to 8 conditions per place. [2023-08-31 11:40:42,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 452 places, 473 transitions, 967 flow [2023-08-31 11:40:42,826 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 452 places, 473 transitions, 967 flow [2023-08-31 11:40:42,826 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:40:42,826 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 452 places, 473 transitions, 967 flow [2023-08-31 11:40:42,826 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 452 places, 473 transitions, 967 flow [2023-08-31 11:40:42,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 452 places, 473 transitions, 967 flow [2023-08-31 11:40:42,907 INFO L130 PetriNetUnfolder]: 31/507 cut-off events. [2023-08-31 11:40:42,907 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 11:40:42,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 523 conditions, 507 events. 31/507 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1855 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 447. Up to 8 conditions per place. [2023-08-31 11:40:42,935 INFO L119 LiptonReduction]: Number of co-enabled transitions 138330 [2023-08-31 11:41:07,886 INFO L134 LiptonReduction]: Checked pairs total: 552886 [2023-08-31 11:41:07,887 INFO L136 LiptonReduction]: Total number of compositions: 281 [2023-08-31 11:41:07,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:41:07,889 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;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:41:07,889 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:41:07,904 INFO L130 PetriNetUnfolder]: 2/72 cut-off events. [2023-08-31 11:41:07,904 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-31 11:41:07,904 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:41:07,905 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 11:41:07,905 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:41:07,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:41:07,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1778784938, now seen corresponding path program 1 times [2023-08-31 11:41:07,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:41:07,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367240599] [2023-08-31 11:41:07,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:41:07,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:41:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:41:07,943 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:41:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:41:07,963 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:41:07,965 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:41:07,966 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:41:07,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 11:41:07,966 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:41:07,966 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:41:07,967 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:41:07,967 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 11:41:08,034 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:41:08,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 591 places, 619 transitions, 1270 flow [2023-08-31 11:41:08,180 INFO L130 PetriNetUnfolder]: 41/665 cut-off events. [2023-08-31 11:41:08,180 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 11:41:08,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 665 events. 41/665 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2872 event pairs, 0 based on Foata normal form. 0/515 useless extension candidates. Maximal degree in co-relation 592. Up to 10 conditions per place. [2023-08-31 11:41:08,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 591 places, 619 transitions, 1270 flow [2023-08-31 11:41:08,194 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 591 places, 619 transitions, 1270 flow [2023-08-31 11:41:08,195 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:41:08,195 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 591 places, 619 transitions, 1270 flow [2023-08-31 11:41:08,195 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 591 places, 619 transitions, 1270 flow [2023-08-31 11:41:08,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 591 places, 619 transitions, 1270 flow [2023-08-31 11:41:08,321 INFO L130 PetriNetUnfolder]: 41/665 cut-off events. [2023-08-31 11:41:08,321 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 11:41:08,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 688 conditions, 665 events. 41/665 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 2872 event pairs, 0 based on Foata normal form. 0/515 useless extension candidates. Maximal degree in co-relation 592. Up to 10 conditions per place. [2023-08-31 11:41:08,396 INFO L119 LiptonReduction]: Number of co-enabled transitions 269120 [2023-08-31 11:41:47,904 INFO L134 LiptonReduction]: Checked pairs total: 1260756 [2023-08-31 11:41:47,905 INFO L136 LiptonReduction]: Total number of compositions: 377 [2023-08-31 11:41:47,906 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:41:47,907 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;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:41:47,907 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:41:47,915 INFO L130 PetriNetUnfolder]: 5/125 cut-off events. [2023-08-31 11:41:47,915 INFO L131 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2023-08-31 11:41:47,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:41:47,916 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 11:41:47,916 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:41:47,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:41:47,916 INFO L85 PathProgramCache]: Analyzing trace with hash -419963176, now seen corresponding path program 1 times [2023-08-31 11:41:47,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:41:47,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571608041] [2023-08-31 11:41:47,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:41:47,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:41:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:41:47,937 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:41:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:41:47,952 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:41:47,952 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:41:47,953 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:41:47,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 11:41:47,953 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:41:47,953 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:41:47,953 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:41:47,953 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 11:41:48,050 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:41:48,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 730 places, 765 transitions, 1575 flow [2023-08-31 11:41:48,241 INFO L130 PetriNetUnfolder]: 51/823 cut-off events. [2023-08-31 11:41:48,241 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 11:41:48,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 823 events. 51/823 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3941 event pairs, 0 based on Foata normal form. 0/636 useless extension candidates. Maximal degree in co-relation 737. Up to 12 conditions per place. [2023-08-31 11:41:48,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 730 places, 765 transitions, 1575 flow [2023-08-31 11:41:48,264 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 730 places, 765 transitions, 1575 flow [2023-08-31 11:41:48,264 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:41:48,264 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 730 places, 765 transitions, 1575 flow [2023-08-31 11:41:48,264 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 730 places, 765 transitions, 1575 flow [2023-08-31 11:41:48,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 730 places, 765 transitions, 1575 flow [2023-08-31 11:41:48,479 INFO L130 PetriNetUnfolder]: 51/823 cut-off events. [2023-08-31 11:41:48,479 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 11:41:48,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 854 conditions, 823 events. 51/823 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 3941 event pairs, 0 based on Foata normal form. 0/636 useless extension candidates. Maximal degree in co-relation 737. Up to 12 conditions per place. [2023-08-31 11:41:48,576 INFO L119 LiptonReduction]: Number of co-enabled transitions 442250 [2023-08-31 11:42:08,790 INFO L134 LiptonReduction]: Checked pairs total: 1843009 [2023-08-31 11:42:08,790 INFO L136 LiptonReduction]: Total number of compositions: 440 [2023-08-31 11:42:08,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:42:08,792 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;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:42:08,792 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:42:08,806 INFO L130 PetriNetUnfolder]: 9/189 cut-off events. [2023-08-31 11:42:08,807 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-31 11:42:08,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:42:08,807 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:42:08,807 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:42:08,808 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:42:08,808 INFO L85 PathProgramCache]: Analyzing trace with hash 2014686694, now seen corresponding path program 1 times [2023-08-31 11:42:08,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:42:08,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310660211] [2023-08-31 11:42:08,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:42:08,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:42:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:42:08,831 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:42:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:42:08,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:42:08,862 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:42:08,862 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:42:08,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 11:42:08,867 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:42:08,867 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:42:08,868 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:42:08,868 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 11:42:09,003 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:42:09,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 869 places, 911 transitions, 1882 flow [2023-08-31 11:42:09,270 INFO L130 PetriNetUnfolder]: 61/981 cut-off events. [2023-08-31 11:42:09,271 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 11:42:09,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 981 events. 61/981 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5055 event pairs, 0 based on Foata normal form. 0/757 useless extension candidates. Maximal degree in co-relation 882. Up to 14 conditions per place. [2023-08-31 11:42:09,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 869 places, 911 transitions, 1882 flow [2023-08-31 11:42:09,309 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 869 places, 911 transitions, 1882 flow [2023-08-31 11:42:09,310 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:42:09,310 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 869 places, 911 transitions, 1882 flow [2023-08-31 11:42:09,311 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 869 places, 911 transitions, 1882 flow [2023-08-31 11:42:09,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 869 places, 911 transitions, 1882 flow [2023-08-31 11:42:09,733 INFO L130 PetriNetUnfolder]: 61/981 cut-off events. [2023-08-31 11:42:09,734 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 11:42:09,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1021 conditions, 981 events. 61/981 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5055 event pairs, 0 based on Foata normal form. 0/757 useless extension candidates. Maximal degree in co-relation 882. Up to 14 conditions per place. [2023-08-31 11:42:09,835 INFO L119 LiptonReduction]: Number of co-enabled transitions 657720 [2023-08-31 11:42:57,748 INFO L134 LiptonReduction]: Checked pairs total: 3121338 [2023-08-31 11:42:57,748 INFO L136 LiptonReduction]: Total number of compositions: 531 [2023-08-31 11:42:57,750 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:42:57,750 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;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:42:57,750 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:42:57,774 INFO L130 PetriNetUnfolder]: 14/263 cut-off events. [2023-08-31 11:42:57,774 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 11:42:57,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:42:57,774 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:42:57,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:42:57,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:42:57,775 INFO L85 PathProgramCache]: Analyzing trace with hash 295134810, now seen corresponding path program 1 times [2023-08-31 11:42:57,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:42:57,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114211159] [2023-08-31 11:42:57,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:42:57,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:42:57,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:42:57,816 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:42:57,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:42:57,838 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:42:57,841 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:42:57,841 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:42:57,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 11:42:57,841 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:42:57,844 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:42:57,844 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:42:57,844 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 11:42:57,966 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:42:57,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1008 places, 1057 transitions, 2191 flow [2023-08-31 11:42:58,379 INFO L130 PetriNetUnfolder]: 71/1139 cut-off events. [2023-08-31 11:42:58,380 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 11:42:58,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 1139 events. 71/1139 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6212 event pairs, 0 based on Foata normal form. 0/878 useless extension candidates. Maximal degree in co-relation 1027. Up to 16 conditions per place. [2023-08-31 11:42:58,413 INFO L82 GeneralOperation]: Start removeDead. Operand has 1008 places, 1057 transitions, 2191 flow [2023-08-31 11:42:58,421 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1008 places, 1057 transitions, 2191 flow [2023-08-31 11:42:58,421 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:42:58,422 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1008 places, 1057 transitions, 2191 flow [2023-08-31 11:42:58,422 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1008 places, 1057 transitions, 2191 flow [2023-08-31 11:42:58,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1008 places, 1057 transitions, 2191 flow [2023-08-31 11:42:58,929 INFO L130 PetriNetUnfolder]: 71/1139 cut-off events. [2023-08-31 11:42:58,930 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 11:42:58,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1189 conditions, 1139 events. 71/1139 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 6212 event pairs, 0 based on Foata normal form. 0/878 useless extension candidates. Maximal degree in co-relation 1027. Up to 16 conditions per place. [2023-08-31 11:42:59,091 INFO L119 LiptonReduction]: Number of co-enabled transitions 915530 [2023-08-31 11:43:42,521 INFO L134 LiptonReduction]: Checked pairs total: 4345011 [2023-08-31 11:43:42,521 INFO L136 LiptonReduction]: Total number of compositions: 614 [2023-08-31 11:43:42,522 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:43:42,523 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;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:43:42,523 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:43:42,558 INFO L130 PetriNetUnfolder]: 19/344 cut-off events. [2023-08-31 11:43:42,558 INFO L131 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2023-08-31 11:43:42,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:43:42,559 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:43:42,559 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:43:42,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:43:42,559 INFO L85 PathProgramCache]: Analyzing trace with hash 238612654, now seen corresponding path program 1 times [2023-08-31 11:43:42,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:43:42,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108757615] [2023-08-31 11:43:42,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:43:42,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:43:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:43:42,576 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:43:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:43:42,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:43:42,592 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:43:42,592 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:43:42,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 11:43:42,593 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:43:42,593 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:43:42,593 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:43:42,593 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 11:43:42,765 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:43:42,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1147 places, 1203 transitions, 2502 flow [2023-08-31 11:43:43,381 INFO L130 PetriNetUnfolder]: 81/1297 cut-off events. [2023-08-31 11:43:43,381 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 11:43:43,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1358 conditions, 1297 events. 81/1297 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 7333 event pairs, 0 based on Foata normal form. 0/999 useless extension candidates. Maximal degree in co-relation 1173. Up to 18 conditions per place. [2023-08-31 11:43:43,431 INFO L82 GeneralOperation]: Start removeDead. Operand has 1147 places, 1203 transitions, 2502 flow [2023-08-31 11:43:43,440 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1147 places, 1203 transitions, 2502 flow [2023-08-31 11:43:43,441 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:43:43,441 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1147 places, 1203 transitions, 2502 flow [2023-08-31 11:43:43,441 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1147 places, 1203 transitions, 2502 flow [2023-08-31 11:43:43,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1147 places, 1203 transitions, 2502 flow [2023-08-31 11:43:43,938 INFO L130 PetriNetUnfolder]: 81/1297 cut-off events. [2023-08-31 11:43:43,939 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 11:43:43,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1358 conditions, 1297 events. 81/1297 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 7333 event pairs, 0 based on Foata normal form. 0/999 useless extension candidates. Maximal degree in co-relation 1173. Up to 18 conditions per place. [2023-08-31 11:43:44,148 INFO L119 LiptonReduction]: Number of co-enabled transitions 1215680 [2023-08-31 11:44:25,574 INFO L134 LiptonReduction]: Checked pairs total: 5841015 [2023-08-31 11:44:25,574 INFO L136 LiptonReduction]: Total number of compositions: 688 [2023-08-31 11:44:25,576 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:44:25,576 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;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:44:25,576 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:44:25,657 INFO L130 PetriNetUnfolder]: 25/432 cut-off events. [2023-08-31 11:44:25,657 INFO L131 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2023-08-31 11:44:25,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:44:25,658 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:44:25,658 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:44:25,658 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:44:25,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1912297585, now seen corresponding path program 1 times [2023-08-31 11:44:25,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:44:25,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136876259] [2023-08-31 11:44:25,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:44:25,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:44:25,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:44:25,687 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:44:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:44:25,742 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:44:25,745 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:44:25,745 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:44:25,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 11:44:25,745 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:44:25,747 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:44:25,747 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:44:25,747 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 11:44:25,920 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:44:25,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1286 places, 1349 transitions, 2815 flow [2023-08-31 11:44:26,473 INFO L130 PetriNetUnfolder]: 91/1455 cut-off events. [2023-08-31 11:44:26,473 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 11:44:26,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 1455 events. 91/1455 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 8506 event pairs, 0 based on Foata normal form. 0/1120 useless extension candidates. Maximal degree in co-relation 1340. Up to 20 conditions per place. [2023-08-31 11:44:26,539 INFO L82 GeneralOperation]: Start removeDead. Operand has 1286 places, 1349 transitions, 2815 flow [2023-08-31 11:44:26,550 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1286 places, 1349 transitions, 2815 flow [2023-08-31 11:44:26,551 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:44:26,551 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1286 places, 1349 transitions, 2815 flow [2023-08-31 11:44:26,551 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1286 places, 1349 transitions, 2815 flow [2023-08-31 11:44:26,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1286 places, 1349 transitions, 2815 flow [2023-08-31 11:44:27,112 INFO L130 PetriNetUnfolder]: 91/1455 cut-off events. [2023-08-31 11:44:27,113 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 11:44:27,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 1455 events. 91/1455 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 8506 event pairs, 0 based on Foata normal form. 0/1120 useless extension candidates. Maximal degree in co-relation 1340. Up to 20 conditions per place. [2023-08-31 11:44:27,342 INFO L119 LiptonReduction]: Number of co-enabled transitions 1558170 [2023-08-31 11:45:30,738 INFO L134 LiptonReduction]: Checked pairs total: 7431023 [2023-08-31 11:45:30,739 INFO L136 LiptonReduction]: Total number of compositions: 778 [2023-08-31 11:45:30,740 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:45:30,741 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;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:45:30,741 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:45:30,822 INFO L130 PetriNetUnfolder]: 32/523 cut-off events. [2023-08-31 11:45:30,822 INFO L131 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2023-08-31 11:45:30,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:45:30,822 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:45:30,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:45:30,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:45:30,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1569675135, now seen corresponding path program 1 times [2023-08-31 11:45:30,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:45:30,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704667965] [2023-08-31 11:45:30,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:45:30,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:45:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:45:30,845 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:45:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:45:30,862 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:45:30,862 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:45:30,862 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:45:30,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 11:45:30,863 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:45:30,863 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:45:30,863 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:45:30,863 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 11:45:31,019 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:45:31,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1425 places, 1495 transitions, 3130 flow [2023-08-31 11:45:31,700 INFO L130 PetriNetUnfolder]: 101/1613 cut-off events. [2023-08-31 11:45:31,700 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 11:45:31,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 1613 events. 101/1613 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9713 event pairs, 0 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 1508. Up to 22 conditions per place. [2023-08-31 11:45:31,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 1425 places, 1495 transitions, 3130 flow [2023-08-31 11:45:31,791 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1425 places, 1495 transitions, 3130 flow [2023-08-31 11:45:31,791 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:45:31,791 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1425 places, 1495 transitions, 3130 flow [2023-08-31 11:45:31,791 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1425 places, 1495 transitions, 3130 flow [2023-08-31 11:45:31,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1425 places, 1495 transitions, 3130 flow [2023-08-31 11:45:32,554 INFO L130 PetriNetUnfolder]: 101/1613 cut-off events. [2023-08-31 11:45:32,555 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 11:45:32,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1699 conditions, 1613 events. 101/1613 cut-off events. For 210/210 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 9713 event pairs, 0 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 1508. Up to 22 conditions per place. [2023-08-31 11:45:32,881 INFO L119 LiptonReduction]: Number of co-enabled transitions 1943000 [2023-08-31 11:46:54,098 INFO L134 LiptonReduction]: Checked pairs total: 9282985 [2023-08-31 11:46:54,098 INFO L136 LiptonReduction]: Total number of compositions: 867 [2023-08-31 11:46:54,100 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:46:54,100 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;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:46:54,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:46:54,233 INFO L130 PetriNetUnfolder]: 39/615 cut-off events. [2023-08-31 11:46:54,233 INFO L131 PetriNetUnfolder]: For 210/210 co-relation queries the response was YES. [2023-08-31 11:46:54,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:46:54,233 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:46:54,233 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:46:54,234 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:46:54,234 INFO L85 PathProgramCache]: Analyzing trace with hash -2052983187, now seen corresponding path program 1 times [2023-08-31 11:46:54,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:46:54,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186344686] [2023-08-31 11:46:54,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:46:54,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:46:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:46:54,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:46:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:46:54,273 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:46:54,274 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:46:54,274 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:46:54,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 11:46:54,274 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:46:54,275 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:46:54,275 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:46:54,275 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 11:46:54,448 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:46:54,455 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1564 places, 1641 transitions, 3447 flow [2023-08-31 11:46:55,290 INFO L130 PetriNetUnfolder]: 111/1771 cut-off events. [2023-08-31 11:46:55,290 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 11:46:55,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1771 events. 111/1771 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 10860 event pairs, 0 based on Foata normal form. 0/1362 useless extension candidates. Maximal degree in co-relation 1679. Up to 24 conditions per place. [2023-08-31 11:46:55,374 INFO L82 GeneralOperation]: Start removeDead. Operand has 1564 places, 1641 transitions, 3447 flow [2023-08-31 11:46:55,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1564 places, 1641 transitions, 3447 flow [2023-08-31 11:46:55,389 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:46:55,389 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1564 places, 1641 transitions, 3447 flow [2023-08-31 11:46:55,389 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1564 places, 1641 transitions, 3447 flow [2023-08-31 11:46:55,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1564 places, 1641 transitions, 3447 flow [2023-08-31 11:46:56,246 INFO L130 PetriNetUnfolder]: 111/1771 cut-off events. [2023-08-31 11:46:56,247 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 11:46:56,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1771 events. 111/1771 cut-off events. For 275/275 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 10860 event pairs, 0 based on Foata normal form. 0/1362 useless extension candidates. Maximal degree in co-relation 1679. Up to 24 conditions per place. [2023-08-31 11:46:56,735 INFO L119 LiptonReduction]: Number of co-enabled transitions 2370170 [2023-08-31 11:48:20,826 INFO L134 LiptonReduction]: Checked pairs total: 11311576 [2023-08-31 11:48:20,826 INFO L136 LiptonReduction]: Total number of compositions: 949 [2023-08-31 11:48:20,828 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:48:20,828 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;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:48:20,828 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:48:20,960 INFO L130 PetriNetUnfolder]: 46/702 cut-off events. [2023-08-31 11:48:20,961 INFO L131 PetriNetUnfolder]: For 275/275 co-relation queries the response was YES. [2023-08-31 11:48:20,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:48:20,961 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 11:48:20,961 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:48:20,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:48:20,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1048373946, now seen corresponding path program 1 times [2023-08-31 11:48:20,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:48:20,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629210969] [2023-08-31 11:48:20,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:48:20,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:48:20,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:48:20,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:48:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:48:21,001 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:48:21,002 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:48:21,002 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:48:21,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 11:48:21,002 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:48:21,002 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:48:21,002 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:48:21,003 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 11:48:21,212 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:48:21,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1703 places, 1787 transitions, 3766 flow [2023-08-31 11:48:22,248 INFO L130 PetriNetUnfolder]: 121/1929 cut-off events. [2023-08-31 11:48:22,248 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 11:48:22,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2044 conditions, 1929 events. 121/1929 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 12044 event pairs, 0 based on Foata normal form. 0/1483 useless extension candidates. Maximal degree in co-relation 1851. Up to 26 conditions per place. [2023-08-31 11:48:22,459 INFO L82 GeneralOperation]: Start removeDead. Operand has 1703 places, 1787 transitions, 3766 flow [2023-08-31 11:48:22,480 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1703 places, 1787 transitions, 3766 flow [2023-08-31 11:48:22,480 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:48:22,480 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1703 places, 1787 transitions, 3766 flow [2023-08-31 11:48:22,480 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1703 places, 1787 transitions, 3766 flow [2023-08-31 11:48:22,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1703 places, 1787 transitions, 3766 flow [2023-08-31 11:48:23,697 INFO L130 PetriNetUnfolder]: 121/1929 cut-off events. [2023-08-31 11:48:23,697 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 11:48:23,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2044 conditions, 1929 events. 121/1929 cut-off events. For 352/352 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 12044 event pairs, 0 based on Foata normal form. 0/1483 useless extension candidates. Maximal degree in co-relation 1851. Up to 26 conditions per place. [2023-08-31 11:48:24,229 INFO L119 LiptonReduction]: Number of co-enabled transitions 2839680 [2023-08-31 11:49:41,109 INFO L134 LiptonReduction]: Checked pairs total: 13541224 [2023-08-31 11:49:41,109 INFO L136 LiptonReduction]: Total number of compositions: 1011 [2023-08-31 11:49:41,110 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:49:41,111 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;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:49:41,111 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:49:41,293 INFO L130 PetriNetUnfolder]: 53/796 cut-off events. [2023-08-31 11:49:41,293 INFO L131 PetriNetUnfolder]: For 352/352 co-relation queries the response was YES. [2023-08-31 11:49:41,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:49:41,293 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 11:49:41,293 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:49:41,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:49:41,294 INFO L85 PathProgramCache]: Analyzing trace with hash 2052502642, now seen corresponding path program 1 times [2023-08-31 11:49:41,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:49:41,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052902193] [2023-08-31 11:49:41,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:49:41,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:49:41,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:49:41,318 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:49:41,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:49:41,339 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:49:41,340 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:49:41,340 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:49:41,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 11:49:41,340 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:49:41,340 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:49:41,340 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:49:41,341 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 11:49:41,555 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:49:41,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1842 places, 1933 transitions, 4087 flow [2023-08-31 11:49:42,740 INFO L130 PetriNetUnfolder]: 131/2087 cut-off events. [2023-08-31 11:49:42,740 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 11:49:42,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2218 conditions, 2087 events. 131/2087 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 13258 event pairs, 0 based on Foata normal form. 0/1604 useless extension candidates. Maximal degree in co-relation 2024. Up to 28 conditions per place. [2023-08-31 11:49:42,904 INFO L82 GeneralOperation]: Start removeDead. Operand has 1842 places, 1933 transitions, 4087 flow [2023-08-31 11:49:42,930 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1842 places, 1933 transitions, 4087 flow [2023-08-31 11:49:42,930 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:49:42,930 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1842 places, 1933 transitions, 4087 flow [2023-08-31 11:49:42,930 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1842 places, 1933 transitions, 4087 flow [2023-08-31 11:49:42,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1842 places, 1933 transitions, 4087 flow [2023-08-31 11:49:44,193 INFO L130 PetriNetUnfolder]: 131/2087 cut-off events. [2023-08-31 11:49:44,193 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 11:49:44,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2218 conditions, 2087 events. 131/2087 cut-off events. For 442/442 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 13258 event pairs, 0 based on Foata normal form. 0/1604 useless extension candidates. Maximal degree in co-relation 2024. Up to 28 conditions per place. [2023-08-31 11:49:44,761 INFO L119 LiptonReduction]: Number of co-enabled transitions 3351530 [2023-08-31 11:50:45,341 INFO L134 LiptonReduction]: Checked pairs total: 15976637 [2023-08-31 11:50:45,341 INFO L136 LiptonReduction]: Total number of compositions: 1099 [2023-08-31 11:50:45,343 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:50:45,343 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;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:50:45,343 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:50:45,543 INFO L130 PetriNetUnfolder]: 60/887 cut-off events. [2023-08-31 11:50:45,543 INFO L131 PetriNetUnfolder]: For 442/442 co-relation queries the response was YES. [2023-08-31 11:50:45,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:50:45,543 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 11:50:45,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:50:45,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:50:45,544 INFO L85 PathProgramCache]: Analyzing trace with hash -839188135, now seen corresponding path program 1 times [2023-08-31 11:50:45,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:50:45,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74469045] [2023-08-31 11:50:45,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:50:45,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:50:45,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:50:45,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:50:45,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:50:45,586 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:50:45,587 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:50:45,587 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:50:45,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 11:50:45,587 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:50:45,587 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:50:45,587 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:50:45,588 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-08-31 11:50:45,852 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:50:45,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1981 places, 2079 transitions, 4410 flow [2023-08-31 11:50:47,439 INFO L130 PetriNetUnfolder]: 141/2245 cut-off events. [2023-08-31 11:50:47,439 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 11:50:47,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 2245 events. 141/2245 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 14421 event pairs, 0 based on Foata normal form. 0/1725 useless extension candidates. Maximal degree in co-relation 2198. Up to 30 conditions per place. [2023-08-31 11:50:47,584 INFO L82 GeneralOperation]: Start removeDead. Operand has 1981 places, 2079 transitions, 4410 flow [2023-08-31 11:50:47,611 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 1981 places, 2079 transitions, 4410 flow [2023-08-31 11:50:47,611 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:50:47,611 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1981 places, 2079 transitions, 4410 flow [2023-08-31 11:50:47,612 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 1981 places, 2079 transitions, 4410 flow [2023-08-31 11:50:47,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 1981 places, 2079 transitions, 4410 flow [2023-08-31 11:50:49,267 INFO L130 PetriNetUnfolder]: 141/2245 cut-off events. [2023-08-31 11:50:49,267 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 11:50:49,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2393 conditions, 2245 events. 141/2245 cut-off events. For 546/546 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 14421 event pairs, 0 based on Foata normal form. 0/1725 useless extension candidates. Maximal degree in co-relation 2198. Up to 30 conditions per place. [2023-08-31 11:50:49,952 INFO L119 LiptonReduction]: Number of co-enabled transitions 3905720 [2023-08-31 11:52:14,617 INFO L134 LiptonReduction]: Checked pairs total: 16378385 [2023-08-31 11:52:14,617 INFO L136 LiptonReduction]: Total number of compositions: 1186 [2023-08-31 11:52:14,618 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:52:14,619 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;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:52:14,619 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:52:14,917 INFO L130 PetriNetUnfolder]: 67/979 cut-off events. [2023-08-31 11:52:14,917 INFO L131 PetriNetUnfolder]: For 546/546 co-relation queries the response was YES. [2023-08-31 11:52:14,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:52:14,917 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 11:52:14,917 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:52:14,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:52:14,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1705700386, now seen corresponding path program 1 times [2023-08-31 11:52:14,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:52:14,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567130893] [2023-08-31 11:52:14,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:52:14,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:52:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:52:14,946 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:52:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:52:14,967 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:52:14,968 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:52:14,968 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:52:14,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 11:52:14,968 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:52:14,969 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:52:14,969 WARN L233 ceAbstractionStarter]: 14 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:52:14,969 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 15 thread instances. [2023-08-31 11:52:15,215 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:52:15,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2120 places, 2225 transitions, 4735 flow [2023-08-31 11:52:16,743 INFO L130 PetriNetUnfolder]: 151/2403 cut-off events. [2023-08-31 11:52:16,743 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 11:52:16,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2569 conditions, 2403 events. 151/2403 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 15578 event pairs, 0 based on Foata normal form. 0/1846 useless extension candidates. Maximal degree in co-relation 2373. Up to 32 conditions per place. [2023-08-31 11:52:16,953 INFO L82 GeneralOperation]: Start removeDead. Operand has 2120 places, 2225 transitions, 4735 flow [2023-08-31 11:52:16,985 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2120 places, 2225 transitions, 4735 flow [2023-08-31 11:52:16,985 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:52:16,985 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2120 places, 2225 transitions, 4735 flow [2023-08-31 11:52:16,985 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2120 places, 2225 transitions, 4735 flow [2023-08-31 11:52:16,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2120 places, 2225 transitions, 4735 flow [2023-08-31 11:52:18,589 INFO L130 PetriNetUnfolder]: 151/2403 cut-off events. [2023-08-31 11:52:18,590 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 11:52:18,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2569 conditions, 2403 events. 151/2403 cut-off events. For 665/665 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 15578 event pairs, 0 based on Foata normal form. 0/1846 useless extension candidates. Maximal degree in co-relation 2373. Up to 32 conditions per place. [2023-08-31 11:52:19,749 INFO L119 LiptonReduction]: Number of co-enabled transitions 4502250 [2023-08-31 11:53:46,247 INFO L134 LiptonReduction]: Checked pairs total: 18965808 [2023-08-31 11:53:46,247 INFO L136 LiptonReduction]: Total number of compositions: 1276 [2023-08-31 11:53:46,249 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 11:53:46,249 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;@4998a7c9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 11:53:46,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 11:53:46,567 INFO L130 PetriNetUnfolder]: 74/1069 cut-off events. [2023-08-31 11:53:46,567 INFO L131 PetriNetUnfolder]: For 665/665 co-relation queries the response was YES. [2023-08-31 11:53:46,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 11:53:46,567 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 11:53:46,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 11:53:46,567 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 11:53:46,567 INFO L85 PathProgramCache]: Analyzing trace with hash -896001408, now seen corresponding path program 1 times [2023-08-31 11:53:46,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 11:53:46,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471541207] [2023-08-31 11:53:46,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 11:53:46,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 11:53:46,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:53:46,594 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 11:53:46,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 11:53:46,616 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 11:53:46,616 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 11:53:46,616 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 11:53:46,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 11:53:46,617 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 11:53:46,617 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 11:53:46,617 WARN L233 ceAbstractionStarter]: 15 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 11:53:46,617 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 16 thread instances. [2023-08-31 11:53:46,966 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-31 11:53:46,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2259 places, 2371 transitions, 5062 flow [2023-08-31 11:53:49,149 INFO L130 PetriNetUnfolder]: 161/2561 cut-off events. [2023-08-31 11:53:49,149 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 11:53:49,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2746 conditions, 2561 events. 161/2561 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 16808 event pairs, 0 based on Foata normal form. 0/1967 useless extension candidates. Maximal degree in co-relation 2549. Up to 34 conditions per place. [2023-08-31 11:53:49,371 INFO L82 GeneralOperation]: Start removeDead. Operand has 2259 places, 2371 transitions, 5062 flow [2023-08-31 11:53:49,404 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 2259 places, 2371 transitions, 5062 flow [2023-08-31 11:53:49,404 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 11:53:49,405 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 2259 places, 2371 transitions, 5062 flow [2023-08-31 11:53:49,405 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 2259 places, 2371 transitions, 5062 flow [2023-08-31 11:53:49,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 2259 places, 2371 transitions, 5062 flow [2023-08-31 11:53:51,371 INFO L130 PetriNetUnfolder]: 161/2561 cut-off events. [2023-08-31 11:53:51,372 INFO L131 PetriNetUnfolder]: For 800/800 co-relation queries the response was YES. [2023-08-31 11:53:51,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2746 conditions, 2561 events. 161/2561 cut-off events. For 800/800 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 16808 event pairs, 0 based on Foata normal form. 0/1967 useless extension candidates. Maximal degree in co-relation 2549. Up to 34 conditions per place. [2023-08-31 11:53:52,367 INFO L119 LiptonReduction]: Number of co-enabled transitions 5141120 Killed by 15