./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.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/goblint-regression/28-race_reach_01-simple_racing.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 eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 --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 20:40:47,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 20:40:47,411 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 20:40:47,444 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 20:40:47,446 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 20:40:47,448 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 20:40:47,450 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 20:40:47,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 20:40:47,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 20:40:47,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 20:40:47,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 20:40:47,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 20:40:47,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 20:40:47,461 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 20:40:47,462 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 20:40:47,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 20:40:47,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 20:40:47,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 20:40:47,468 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 20:40:47,471 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 20:40:47,477 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 20:40:47,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 20:40:47,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 20:40:47,480 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 20:40:47,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 20:40:47,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 20:40:47,485 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 20:40:47,486 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 20:40:47,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 20:40:47,487 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 20:40:47,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 20:40:47,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 20:40:47,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 20:40:47,493 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 20:40:47,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 20:40:47,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 20:40:47,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 20:40:47,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 20:40:47,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 20:40:47,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 20:40:47,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 20:40:47,498 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-31 20:40:47,522 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 20:40:47,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 20:40:47,524 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 20:40:47,524 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 20:40:47,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 20:40:47,524 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 20:40:47,525 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 20:40:47,525 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 20:40:47,525 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 20:40:47,525 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 20:40:47,526 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 20:40:47,526 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-31 20:40:47,526 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 20:40:47,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 20:40:47,526 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 20:40:47,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 20:40:47,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 20:40:47,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 20:40:47,527 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-31 20:40:47,527 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 20:40:47,527 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 20:40:47,527 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 20:40:47,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 20:40:47,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 20:40:47,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 20:40:47,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 20:40:47,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:40:47,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 20:40:47,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 20:40:47,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 20:40:47,529 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 20:40:47,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 20:40:47,529 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 20:40:47,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 20:40:47,530 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 20:40:47,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 20:40:47,530 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 20:40:47,530 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eddb66a74cd149f880832378d52d5c02c94fd6efcf2d83aeade11bcdaaabe426 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-08-31 20:40:47,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 20:40:47,775 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 20:40:47,777 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 20:40:47,778 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 20:40:47,778 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 20:40:47,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-08-31 20:40:48,742 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 20:40:48,901 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 20:40:48,901 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i [2023-08-31 20:40:48,909 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3418f980f/397dc88329fd40b3aa8595e97d59db50/FLAG7ca6b03ac [2023-08-31 20:40:48,922 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3418f980f/397dc88329fd40b3aa8595e97d59db50 [2023-08-31 20:40:48,924 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 20:40:48,925 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 20:40:48,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 20:40:48,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 20:40:48,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 20:40:48,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:40:48" (1/1) ... [2023-08-31 20:40:48,931 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@278c3ac7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:48, skipping insertion in model container [2023-08-31 20:40:48,932 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 08:40:48" (1/1) ... [2023-08-31 20:40:48,936 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 20:40:48,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 20:40:49,207 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2023-08-31 20:40:49,221 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:40:49,231 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 20:40:49,257 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_01-simple_racing.i[30176,30189] [2023-08-31 20:40:49,271 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 20:40:49,298 INFO L208 MainTranslator]: Completed translation [2023-08-31 20:40:49,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:49 WrapperNode [2023-08-31 20:40:49,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 20:40:49,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 20:40:49,300 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 20:40:49,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 20:40:49,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:49" (1/1) ... [2023-08-31 20:40:49,312 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:49" (1/1) ... [2023-08-31 20:40:49,325 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 86 [2023-08-31 20:40:49,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 20:40:49,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 20:40:49,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 20:40:49,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 20:40:49,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:49" (1/1) ... [2023-08-31 20:40:49,335 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:49" (1/1) ... [2023-08-31 20:40:49,338 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:49" (1/1) ... [2023-08-31 20:40:49,338 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:49" (1/1) ... [2023-08-31 20:40:49,344 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:49" (1/1) ... [2023-08-31 20:40:49,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:49" (1/1) ... [2023-08-31 20:40:49,347 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:49" (1/1) ... [2023-08-31 20:40:49,348 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:49" (1/1) ... [2023-08-31 20:40:49,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 20:40:49,350 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 20:40:49,350 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 20:40:49,350 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 20:40:49,351 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:49" (1/1) ... [2023-08-31 20:40:49,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 20:40:49,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 20:40:49,373 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 20:40:49,389 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 20:40:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 20:40:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 20:40:49,396 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-31 20:40:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 20:40:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 20:40:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-31 20:40:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-31 20:40:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 20:40:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 20:40:49,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 20:40:49,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 20:40:49,398 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 20:40:49,473 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 20:40:49,474 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 20:40:49,624 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 20:40:49,633 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 20:40:49,635 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-31 20:40:49,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:40:49 BoogieIcfgContainer [2023-08-31 20:40:49,637 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 20:40:49,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 20:40:49,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 20:40:49,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 20:40:49,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 08:40:48" (1/3) ... [2023-08-31 20:40:49,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a6b4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:40:49, skipping insertion in model container [2023-08-31 20:40:49,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 08:40:49" (2/3) ... [2023-08-31 20:40:49,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26a6b4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 08:40:49, skipping insertion in model container [2023-08-31 20:40:49,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 08:40:49" (3/3) ... [2023-08-31 20:40:49,642 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_01-simple_racing.i [2023-08-31 20:40:49,646 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 20:40:49,652 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 20:40:49,652 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-31 20:40:49,652 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 20:40:49,706 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-31 20:40:49,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 130 transitions, 268 flow [2023-08-31 20:40:49,829 INFO L130 PetriNetUnfolder]: 17/171 cut-off events. [2023-08-31 20:40:49,829 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-31 20:40:49,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 177 conditions, 171 events. 17/171 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 475 event pairs, 0 based on Foata normal form. 0/143 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-08-31 20:40:49,834 INFO L82 GeneralOperation]: Start removeDead. Operand has 121 places, 130 transitions, 268 flow [2023-08-31 20:40:49,845 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 125 transitions, 255 flow [2023-08-31 20:40:49,847 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:40:49,856 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 125 transitions, 255 flow [2023-08-31 20:40:49,860 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 125 transitions, 255 flow [2023-08-31 20:40:49,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 125 transitions, 255 flow [2023-08-31 20:40:49,901 INFO L130 PetriNetUnfolder]: 16/166 cut-off events. [2023-08-31 20:40:49,902 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:40:49,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 166 events. 16/166 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 479 event pairs, 0 based on Foata normal form. 0/138 useless extension candidates. Maximal degree in co-relation 90. Up to 4 conditions per place. [2023-08-31 20:40:49,906 INFO L119 LiptonReduction]: Number of co-enabled transitions 4136 [2023-08-31 20:40:52,318 INFO L134 LiptonReduction]: Checked pairs total: 10531 [2023-08-31 20:40:52,319 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-08-31 20:40:52,328 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:40:52,332 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;@545cd08e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:40:52,332 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:40:52,335 INFO L130 PetriNetUnfolder]: 0/20 cut-off events. [2023-08-31 20:40:52,335 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-31 20:40:52,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:40:52,335 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-31 20:40:52,336 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:40:52,338 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:40:52,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1287438900, now seen corresponding path program 1 times [2023-08-31 20:40:52,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:40:52,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609508100] [2023-08-31 20:40:52,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:40:52,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:40:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:40:52,451 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:40:52,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:40:52,498 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:40:52,499 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:40:52,500 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:40:52,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 20:40:52,501 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:40:52,506 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:40:52,507 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:40:52,507 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-31 20:40:52,531 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 20:40:52,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 176 transitions, 370 flow [2023-08-31 20:40:52,575 INFO L130 PetriNetUnfolder]: 31/288 cut-off events. [2023-08-31 20:40:52,575 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:40:52,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 288 events. 31/288 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 948 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-08-31 20:40:52,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 162 places, 176 transitions, 370 flow [2023-08-31 20:40:52,578 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 176 transitions, 370 flow [2023-08-31 20:40:52,578 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:40:52,578 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 176 transitions, 370 flow [2023-08-31 20:40:52,579 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 176 transitions, 370 flow [2023-08-31 20:40:52,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 176 transitions, 370 flow [2023-08-31 20:40:52,600 INFO L130 PetriNetUnfolder]: 31/288 cut-off events. [2023-08-31 20:40:52,601 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-31 20:40:52,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 288 events. 31/288 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 948 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 173. Up to 8 conditions per place. [2023-08-31 20:40:52,610 INFO L119 LiptonReduction]: Number of co-enabled transitions 13112 [2023-08-31 20:40:54,936 INFO L134 LiptonReduction]: Checked pairs total: 44435 [2023-08-31 20:40:54,936 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-31 20:40:54,938 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:40:54,939 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;@545cd08e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:40:54,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:40:54,943 INFO L130 PetriNetUnfolder]: 8/67 cut-off events. [2023-08-31 20:40:54,943 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 20:40:54,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:40:54,943 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-31 20:40:54,943 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:40:54,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:40:54,944 INFO L85 PathProgramCache]: Analyzing trace with hash -486666804, now seen corresponding path program 1 times [2023-08-31 20:40:54,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:40:54,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099776595] [2023-08-31 20:40:54,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:40:54,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:40:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:40:54,982 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:40:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:40:55,017 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:40:55,017 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:40:55,017 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:40:55,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 20:40:55,017 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:40:55,018 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:40:55,018 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:40:55,018 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-31 20:40:55,034 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 20:40:55,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 222 transitions, 474 flow [2023-08-31 20:40:55,080 INFO L130 PetriNetUnfolder]: 50/448 cut-off events. [2023-08-31 20:40:55,080 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:40:55,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 448 events. 50/448 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1669 event pairs, 1 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 296. Up to 16 conditions per place. [2023-08-31 20:40:55,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 222 transitions, 474 flow [2023-08-31 20:40:55,085 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 203 places, 222 transitions, 474 flow [2023-08-31 20:40:55,085 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:40:55,086 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 203 places, 222 transitions, 474 flow [2023-08-31 20:40:55,086 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 203 places, 222 transitions, 474 flow [2023-08-31 20:40:55,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 222 transitions, 474 flow [2023-08-31 20:40:55,124 INFO L130 PetriNetUnfolder]: 50/448 cut-off events. [2023-08-31 20:40:55,124 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-31 20:40:55,126 INFO L83 FinitePrefix]: Finished finitePrefix Result has 476 conditions, 448 events. 50/448 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1669 event pairs, 1 based on Foata normal form. 0/370 useless extension candidates. Maximal degree in co-relation 296. Up to 16 conditions per place. [2023-08-31 20:40:55,137 INFO L119 LiptonReduction]: Number of co-enabled transitions 25872 [2023-08-31 20:40:57,534 INFO L134 LiptonReduction]: Checked pairs total: 97776 [2023-08-31 20:40:57,534 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-31 20:40:57,535 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:40:57,536 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;@545cd08e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:40:57,536 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:40:57,544 INFO L130 PetriNetUnfolder]: 18/119 cut-off events. [2023-08-31 20:40:57,544 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 20:40:57,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:40:57,544 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-31 20:40:57,544 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:40:57,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:40:57,545 INFO L85 PathProgramCache]: Analyzing trace with hash -713396996, now seen corresponding path program 1 times [2023-08-31 20:40:57,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:40:57,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420949331] [2023-08-31 20:40:57,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:40:57,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:40:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:40:57,591 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:40:57,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:40:57,608 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:40:57,609 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:40:57,609 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:40:57,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 20:40:57,609 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:40:57,610 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:40:57,610 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:40:57,610 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-31 20:40:57,629 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-31 20:40:57,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 268 transitions, 580 flow [2023-08-31 20:40:57,711 INFO L130 PetriNetUnfolder]: 81/696 cut-off events. [2023-08-31 20:40:57,711 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:40:57,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 696 events. 81/696 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2936 event pairs, 6 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 468. Up to 32 conditions per place. [2023-08-31 20:40:57,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 244 places, 268 transitions, 580 flow [2023-08-31 20:40:57,719 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 244 places, 268 transitions, 580 flow [2023-08-31 20:40:57,719 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:40:57,719 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 244 places, 268 transitions, 580 flow [2023-08-31 20:40:57,719 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 244 places, 268 transitions, 580 flow [2023-08-31 20:40:57,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 244 places, 268 transitions, 580 flow [2023-08-31 20:40:57,777 INFO L130 PetriNetUnfolder]: 81/696 cut-off events. [2023-08-31 20:40:57,777 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-08-31 20:40:57,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 751 conditions, 696 events. 81/696 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2936 event pairs, 6 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 468. Up to 32 conditions per place. [2023-08-31 20:40:57,794 INFO L119 LiptonReduction]: Number of co-enabled transitions 42768 [2023-08-31 20:41:00,185 INFO L134 LiptonReduction]: Checked pairs total: 187542 [2023-08-31 20:41:00,185 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-31 20:41:00,187 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:00,187 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;@545cd08e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:00,187 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:00,196 INFO L130 PetriNetUnfolder]: 27/173 cut-off events. [2023-08-31 20:41:00,196 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-08-31 20:41:00,196 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:00,196 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:00,202 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:00,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:00,203 INFO L85 PathProgramCache]: Analyzing trace with hash 112511425, now seen corresponding path program 1 times [2023-08-31 20:41:00,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:00,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973900504] [2023-08-31 20:41:00,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:00,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:00,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:00,232 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:00,247 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:00,247 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:00,247 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:00,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 20:41:00,248 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:00,248 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:00,248 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:00,248 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-08-31 20:41:00,265 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-08-31 20:41:00,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 314 transitions, 688 flow [2023-08-31 20:41:00,384 INFO L130 PetriNetUnfolder]: 140/1124 cut-off events. [2023-08-31 20:41:00,384 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:41:00,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 1124 events. 140/1124 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5525 event pairs, 23 based on Foata normal form. 0/942 useless extension candidates. Maximal degree in co-relation 741. Up to 80 conditions per place. [2023-08-31 20:41:00,396 INFO L82 GeneralOperation]: Start removeDead. Operand has 285 places, 314 transitions, 688 flow [2023-08-31 20:41:00,403 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 314 transitions, 688 flow [2023-08-31 20:41:00,403 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:00,403 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 285 places, 314 transitions, 688 flow [2023-08-31 20:41:00,403 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 285 places, 314 transitions, 688 flow [2023-08-31 20:41:00,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 314 transitions, 688 flow [2023-08-31 20:41:00,519 INFO L130 PetriNetUnfolder]: 140/1124 cut-off events. [2023-08-31 20:41:00,519 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-08-31 20:41:00,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 1124 events. 140/1124 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 5525 event pairs, 23 based on Foata normal form. 0/942 useless extension candidates. Maximal degree in co-relation 741. Up to 80 conditions per place. [2023-08-31 20:41:00,559 INFO L119 LiptonReduction]: Number of co-enabled transitions 63800 [2023-08-31 20:41:02,969 INFO L134 LiptonReduction]: Checked pairs total: 260105 [2023-08-31 20:41:02,969 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-08-31 20:41:02,970 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:02,970 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;@545cd08e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:02,971 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:02,983 INFO L130 PetriNetUnfolder]: 40/240 cut-off events. [2023-08-31 20:41:02,983 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-08-31 20:41:02,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:02,983 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:02,983 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:02,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:02,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1320942386, now seen corresponding path program 1 times [2023-08-31 20:41:02,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:02,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22450770] [2023-08-31 20:41:02,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:02,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:03,013 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:03,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:03,036 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:03,039 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:03,039 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:03,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 20:41:03,040 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:03,041 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:03,042 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:03,042 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-08-31 20:41:03,064 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-08-31 20:41:03,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 360 transitions, 798 flow [2023-08-31 20:41:03,340 INFO L130 PetriNetUnfolder]: 263/1920 cut-off events. [2023-08-31 20:41:03,340 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:41:03,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 1920 events. 263/1920 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11597 event pairs, 72 based on Foata normal form. 0/1626 useless extension candidates. Maximal degree in co-relation 1223. Up to 192 conditions per place. [2023-08-31 20:41:03,362 INFO L82 GeneralOperation]: Start removeDead. Operand has 326 places, 360 transitions, 798 flow [2023-08-31 20:41:03,372 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 326 places, 360 transitions, 798 flow [2023-08-31 20:41:03,375 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:03,376 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 326 places, 360 transitions, 798 flow [2023-08-31 20:41:03,376 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 326 places, 360 transitions, 798 flow [2023-08-31 20:41:03,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 326 places, 360 transitions, 798 flow [2023-08-31 20:41:03,623 INFO L130 PetriNetUnfolder]: 263/1920 cut-off events. [2023-08-31 20:41:03,623 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-08-31 20:41:03,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2152 conditions, 1920 events. 263/1920 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 11597 event pairs, 72 based on Foata normal form. 0/1626 useless extension candidates. Maximal degree in co-relation 1223. Up to 192 conditions per place. [2023-08-31 20:41:03,698 INFO L119 LiptonReduction]: Number of co-enabled transitions 88968 [2023-08-31 20:41:06,330 INFO L134 LiptonReduction]: Checked pairs total: 419871 [2023-08-31 20:41:06,330 INFO L136 LiptonReduction]: Total number of compositions: 190 [2023-08-31 20:41:06,332 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:06,333 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;@545cd08e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:06,333 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:06,351 INFO L130 PetriNetUnfolder]: 56/319 cut-off events. [2023-08-31 20:41:06,351 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-08-31 20:41:06,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:06,351 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:06,352 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:06,352 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:06,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1395357030, now seen corresponding path program 1 times [2023-08-31 20:41:06,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:06,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597444717] [2023-08-31 20:41:06,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:06,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:06,389 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:06,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:06,407 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:06,407 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:06,407 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:06,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 20:41:06,407 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:06,408 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:06,408 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:06,408 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-08-31 20:41:06,431 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-08-31 20:41:06,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 406 transitions, 910 flow [2023-08-31 20:41:07,045 INFO L130 PetriNetUnfolder]: 530/3468 cut-off events. [2023-08-31 20:41:07,045 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:41:07,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3966 conditions, 3468 events. 530/3468 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 25393 event pairs, 201 based on Foata normal form. 0/2966 useless extension candidates. Maximal degree in co-relation 2138. Up to 448 conditions per place. [2023-08-31 20:41:07,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 367 places, 406 transitions, 910 flow [2023-08-31 20:41:07,113 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 367 places, 406 transitions, 910 flow [2023-08-31 20:41:07,114 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:07,114 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 367 places, 406 transitions, 910 flow [2023-08-31 20:41:07,114 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 367 places, 406 transitions, 910 flow [2023-08-31 20:41:07,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 367 places, 406 transitions, 910 flow [2023-08-31 20:41:07,786 INFO L130 PetriNetUnfolder]: 530/3468 cut-off events. [2023-08-31 20:41:07,786 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-08-31 20:41:07,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3966 conditions, 3468 events. 530/3468 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 25393 event pairs, 201 based on Foata normal form. 0/2966 useless extension candidates. Maximal degree in co-relation 2138. Up to 448 conditions per place. [2023-08-31 20:41:07,978 INFO L119 LiptonReduction]: Number of co-enabled transitions 118272 [2023-08-31 20:41:10,937 INFO L134 LiptonReduction]: Checked pairs total: 504201 [2023-08-31 20:41:10,938 INFO L136 LiptonReduction]: Total number of compositions: 207 [2023-08-31 20:41:10,939 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:10,939 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;@545cd08e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:10,939 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:10,966 INFO L130 PetriNetUnfolder]: 77/418 cut-off events. [2023-08-31 20:41:10,966 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-08-31 20:41:10,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:10,966 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:10,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:10,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:10,967 INFO L85 PathProgramCache]: Analyzing trace with hash -892717936, now seen corresponding path program 1 times [2023-08-31 20:41:10,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:10,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352186248] [2023-08-31 20:41:10,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:10,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:10,981 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:10,994 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:10,994 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:10,994 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:10,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-31 20:41:10,994 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:10,995 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:10,995 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:10,995 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-08-31 20:41:11,014 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-31 20:41:11,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 408 places, 452 transitions, 1024 flow [2023-08-31 20:41:12,230 INFO L130 PetriNetUnfolder]: 1117/6552 cut-off events. [2023-08-31 20:41:12,231 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:41:12,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7637 conditions, 6552 events. 1117/6552 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 56443 event pairs, 522 based on Foata normal form. 0/5650 useless extension candidates. Maximal degree in co-relation 3950. Up to 1024 conditions per place. [2023-08-31 20:41:12,324 INFO L82 GeneralOperation]: Start removeDead. Operand has 408 places, 452 transitions, 1024 flow [2023-08-31 20:41:12,441 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 408 places, 452 transitions, 1024 flow [2023-08-31 20:41:12,442 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:12,442 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 408 places, 452 transitions, 1024 flow [2023-08-31 20:41:12,442 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 408 places, 452 transitions, 1024 flow [2023-08-31 20:41:12,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 408 places, 452 transitions, 1024 flow [2023-08-31 20:41:13,530 INFO L130 PetriNetUnfolder]: 1117/6552 cut-off events. [2023-08-31 20:41:13,530 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-08-31 20:41:13,634 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7637 conditions, 6552 events. 1117/6552 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 56443 event pairs, 522 based on Foata normal form. 0/5650 useless extension candidates. Maximal degree in co-relation 3950. Up to 1024 conditions per place. [2023-08-31 20:41:13,919 INFO L119 LiptonReduction]: Number of co-enabled transitions 151712 [2023-08-31 20:41:16,928 INFO L134 LiptonReduction]: Checked pairs total: 658334 [2023-08-31 20:41:16,928 INFO L136 LiptonReduction]: Total number of compositions: 229 [2023-08-31 20:41:16,929 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:16,929 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;@545cd08e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:16,930 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:16,968 INFO L130 PetriNetUnfolder]: 109/553 cut-off events. [2023-08-31 20:41:16,968 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-08-31 20:41:16,969 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:16,969 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:16,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:16,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:16,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1121030153, now seen corresponding path program 1 times [2023-08-31 20:41:16,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:16,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882441848] [2023-08-31 20:41:16,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:16,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:16,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:16,983 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:16,996 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:16,996 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:16,996 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:16,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 20:41:16,996 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:16,997 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:16,997 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:16,997 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-08-31 20:41:17,017 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-31 20:41:17,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 449 places, 498 transitions, 1140 flow [2023-08-31 20:41:19,555 INFO L130 PetriNetUnfolder]: 2408/12772 cut-off events. [2023-08-31 20:41:19,555 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:41:19,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15149 conditions, 12772 events. 2408/12772 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 127428 event pairs, 1291 based on Foata normal form. 0/11086 useless extension candidates. Maximal degree in co-relation 7619. Up to 2304 conditions per place. [2023-08-31 20:41:19,784 INFO L82 GeneralOperation]: Start removeDead. Operand has 449 places, 498 transitions, 1140 flow [2023-08-31 20:41:19,871 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 449 places, 498 transitions, 1140 flow [2023-08-31 20:41:19,871 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:19,871 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 449 places, 498 transitions, 1140 flow [2023-08-31 20:41:19,872 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 449 places, 498 transitions, 1140 flow [2023-08-31 20:41:19,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 449 places, 498 transitions, 1140 flow [2023-08-31 20:41:22,403 INFO L130 PetriNetUnfolder]: 2408/12772 cut-off events. [2023-08-31 20:41:22,403 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-08-31 20:41:22,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15149 conditions, 12772 events. 2408/12772 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 127428 event pairs, 1291 based on Foata normal form. 0/11086 useless extension candidates. Maximal degree in co-relation 7619. Up to 2304 conditions per place. [2023-08-31 20:41:23,329 INFO L119 LiptonReduction]: Number of co-enabled transitions 189288 [2023-08-31 20:41:26,314 INFO L134 LiptonReduction]: Checked pairs total: 824356 [2023-08-31 20:41:26,315 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-08-31 20:41:26,316 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:26,316 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@545cd08e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:26,316 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:26,373 INFO L130 PetriNetUnfolder]: 155/734 cut-off events. [2023-08-31 20:41:26,373 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-08-31 20:41:26,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:26,373 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:26,373 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:26,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:26,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1294965240, now seen corresponding path program 1 times [2023-08-31 20:41:26,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:26,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256559558] [2023-08-31 20:41:26,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:26,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:26,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:26,387 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:26,399 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:26,400 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:26,400 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:26,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 20:41:26,400 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:26,400 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:26,401 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:26,401 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-08-31 20:41:26,422 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-31 20:41:26,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 490 places, 544 transitions, 1258 flow [2023-08-31 20:41:31,865 INFO L130 PetriNetUnfolder]: 5235/25392 cut-off events. [2023-08-31 20:41:31,866 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:41:32,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30598 conditions, 25392 events. 5235/25392 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 288553 event pairs, 3084 based on Foata normal form. 0/22154 useless extension candidates. Maximal degree in co-relation 15129. Up to 5120 conditions per place. [2023-08-31 20:41:32,390 INFO L82 GeneralOperation]: Start removeDead. Operand has 490 places, 544 transitions, 1258 flow [2023-08-31 20:41:32,718 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 490 places, 544 transitions, 1258 flow [2023-08-31 20:41:32,719 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:32,719 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 490 places, 544 transitions, 1258 flow [2023-08-31 20:41:32,719 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 490 places, 544 transitions, 1258 flow [2023-08-31 20:41:32,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 490 places, 544 transitions, 1258 flow [2023-08-31 20:41:38,284 INFO L130 PetriNetUnfolder]: 5235/25392 cut-off events. [2023-08-31 20:41:38,284 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-08-31 20:41:38,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30598 conditions, 25392 events. 5235/25392 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 288553 event pairs, 3084 based on Foata normal form. 0/22154 useless extension candidates. Maximal degree in co-relation 15129. Up to 5120 conditions per place. [2023-08-31 20:41:40,271 INFO L119 LiptonReduction]: Number of co-enabled transitions 231000 [2023-08-31 20:41:43,410 INFO L134 LiptonReduction]: Checked pairs total: 1026513 [2023-08-31 20:41:43,410 INFO L136 LiptonReduction]: Total number of compositions: 265 [2023-08-31 20:41:43,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:41:43,413 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;@545cd08e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:41:43,413 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:41:43,496 INFO L130 PetriNetUnfolder]: 230/998 cut-off events. [2023-08-31 20:41:43,496 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-08-31 20:41:43,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:41:43,496 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:41:43,496 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:41:43,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:41:43,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1817050313, now seen corresponding path program 1 times [2023-08-31 20:41:43,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:41:43,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011193773] [2023-08-31 20:41:43,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:41:43,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:41:43,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:43,511 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:41:43,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:41:43,523 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:41:43,524 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:41:43,524 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:41:43,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 20:41:43,524 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:41:43,524 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:41:43,524 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:41:43,525 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-08-31 20:41:43,548 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-08-31 20:41:43,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 531 places, 590 transitions, 1378 flow [2023-08-31 20:41:55,728 INFO L130 PetriNetUnfolder]: 11390/51068 cut-off events. [2023-08-31 20:41:55,729 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:41:57,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62432 conditions, 51068 events. 11390/51068 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 644601 event pairs, 7181 based on Foata normal form. 0/44742 useless extension candidates. Maximal degree in co-relation 30576. Up to 11264 conditions per place. [2023-08-31 20:41:57,122 INFO L82 GeneralOperation]: Start removeDead. Operand has 531 places, 590 transitions, 1378 flow [2023-08-31 20:41:57,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 531 places, 590 transitions, 1378 flow [2023-08-31 20:41:57,808 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:41:57,808 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 531 places, 590 transitions, 1378 flow [2023-08-31 20:41:57,808 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 531 places, 590 transitions, 1378 flow [2023-08-31 20:41:57,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 531 places, 590 transitions, 1378 flow [2023-08-31 20:42:09,889 INFO L130 PetriNetUnfolder]: 11390/51068 cut-off events. [2023-08-31 20:42:09,890 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-08-31 20:42:11,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62432 conditions, 51068 events. 11390/51068 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 644601 event pairs, 7181 based on Foata normal form. 0/44742 useless extension candidates. Maximal degree in co-relation 30576. Up to 11264 conditions per place. [2023-08-31 20:42:14,449 INFO L119 LiptonReduction]: Number of co-enabled transitions 276848 [2023-08-31 20:42:17,524 INFO L134 LiptonReduction]: Checked pairs total: 1233217 [2023-08-31 20:42:17,524 INFO L136 LiptonReduction]: Total number of compositions: 286 [2023-08-31 20:42:17,525 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:42:17,525 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@545cd08e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:42:17,525 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:42:17,651 INFO L130 PetriNetUnfolder]: 356/1395 cut-off events. [2023-08-31 20:42:17,651 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-08-31 20:42:17,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:42:17,651 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 20:42:17,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:42:17,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:42:17,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1603365861, now seen corresponding path program 1 times [2023-08-31 20:42:17,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:42:17,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053481509] [2023-08-31 20:42:17,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:42:17,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:42:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:17,671 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:42:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:42:17,693 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:42:17,693 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:42:17,693 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:42:17,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 20:42:17,694 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:42:17,695 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:42:17,695 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:42:17,695 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-08-31 20:42:17,719 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-08-31 20:42:17,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 572 places, 636 transitions, 1500 flow [2023-08-31 20:42:45,495 INFO L130 PetriNetUnfolder]: 24713/103368 cut-off events. [2023-08-31 20:42:45,495 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:42:51,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128059 conditions, 103368 events. 24713/103368 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 1430812 event pairs, 16398 based on Foata normal form. 0/90882 useless extension candidates. Maximal degree in co-relation 62408. Up to 24576 conditions per place. [2023-08-31 20:42:51,436 INFO L82 GeneralOperation]: Start removeDead. Operand has 572 places, 636 transitions, 1500 flow [2023-08-31 20:42:52,968 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 572 places, 636 transitions, 1500 flow [2023-08-31 20:42:52,968 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:42:52,969 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 572 places, 636 transitions, 1500 flow [2023-08-31 20:42:52,969 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 572 places, 636 transitions, 1500 flow [2023-08-31 20:42:52,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 572 places, 636 transitions, 1500 flow [2023-08-31 20:43:19,379 INFO L130 PetriNetUnfolder]: 24713/103368 cut-off events. [2023-08-31 20:43:19,379 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-08-31 20:43:25,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128059 conditions, 103368 events. 24713/103368 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 1430812 event pairs, 16398 based on Foata normal form. 0/90882 useless extension candidates. Maximal degree in co-relation 62408. Up to 24576 conditions per place. [2023-08-31 20:43:33,579 INFO L119 LiptonReduction]: Number of co-enabled transitions 326832 [2023-08-31 20:43:36,986 INFO L134 LiptonReduction]: Checked pairs total: 1657615 [2023-08-31 20:43:36,987 INFO L136 LiptonReduction]: Total number of compositions: 305 [2023-08-31 20:43:36,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-31 20:43:36,989 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;@545cd08e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 20:43:36,989 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-31 20:43:37,193 INFO L130 PetriNetUnfolder]: 568/2003 cut-off events. [2023-08-31 20:43:37,193 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-08-31 20:43:37,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 20:43:37,193 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 20:43:37,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 20:43:37,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 20:43:37,194 INFO L85 PathProgramCache]: Analyzing trace with hash -880095285, now seen corresponding path program 1 times [2023-08-31 20:43:37,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 20:43:37,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693230127] [2023-08-31 20:43:37,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 20:43:37,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 20:43:37,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:43:37,209 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-31 20:43:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-31 20:43:37,223 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-31 20:43:37,223 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-31 20:43:37,223 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-31 20:43:37,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 20:43:37,224 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-31 20:43:37,224 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-31 20:43:37,224 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-31 20:43:37,224 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-08-31 20:43:37,248 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-08-31 20:43:37,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 613 places, 682 transitions, 1624 flow [2023-08-31 20:44:39,531 INFO L130 PetriNetUnfolder]: 53396/209940 cut-off events. [2023-08-31 20:44:39,531 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-08-31 20:44:56,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263319 conditions, 209940 events. 53396/209940 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2518. Compared 3175151 event pairs, 36879 based on Foata normal form. 0/185150 useless extension candidates. Maximal degree in co-relation 128033. Up to 53248 conditions per place. [2023-08-31 20:44:56,456 INFO L82 GeneralOperation]: Start removeDead. Operand has 613 places, 682 transitions, 1624 flow [2023-08-31 20:45:01,290 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 613 places, 682 transitions, 1624 flow [2023-08-31 20:45:01,290 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 20:45:01,290 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 613 places, 682 transitions, 1624 flow [2023-08-31 20:45:01,291 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 613 places, 682 transitions, 1624 flow [2023-08-31 20:45:01,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 613 places, 682 transitions, 1624 flow