./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 10:43:59,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:43:59,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:43:59,425 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:43:59,428 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:43:59,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:43:59,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:43:59,434 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:43:59,436 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:43:59,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:43:59,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:43:59,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:43:59,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:43:59,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:43:59,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:43:59,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:43:59,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:43:59,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:43:59,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:43:59,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:43:59,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:43:59,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:43:59,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:43:59,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:43:59,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:43:59,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:43:59,475 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:43:59,477 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:43:59,477 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:43:59,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:43:59,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:43:59,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:43:59,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:43:59,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:43:59,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:43:59,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:43:59,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:43:59,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:43:59,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:43:59,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:43:59,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:43:59,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:43:59,517 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:43:59,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:43:59,519 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:43:59,519 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:43:59,520 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:43:59,520 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:43:59,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:43:59,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:43:59,521 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:43:59,521 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:43:59,522 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:43:59,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:43:59,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:43:59,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:43:59,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:43:59,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:43:59,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:43:59,523 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:43:59,523 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:43:59,524 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:43:59,524 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:43:59,524 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:43:59,524 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:43:59,524 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:43:59,525 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:43:59,525 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:43:59,525 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:43:59,525 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:43:59,525 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:43:59,526 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:43:59,526 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:43:59,526 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:43:59,526 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:43:59,526 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:43:59,527 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:43:59,527 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3e7d0a2f10d1449a9a354d4032bafdd0ae7a7fd76aceb835acbee3134ec74e4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:43:59,835 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:43:59,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:43:59,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:43:59,854 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:43:59,854 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:43:59,855 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2023-09-01 10:44:01,150 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:44:01,435 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:44:01,437 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_02-simple_racefree.i [2023-09-01 10:44:01,458 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2658289bc/fab03267860f4c0f86ae24095e2ca8bb/FLAG8ed67887a [2023-09-01 10:44:01,481 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2658289bc/fab03267860f4c0f86ae24095e2ca8bb [2023-09-01 10:44:01,483 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:44:01,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:44:01,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:44:01,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:44:01,491 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:44:01,492 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:44:01" (1/1) ... [2023-09-01 10:44:01,493 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e7863e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:01, skipping insertion in model container [2023-09-01 10:44:01,493 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:44:01" (1/1) ... [2023-09-01 10:44:01,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:44:01,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:44:01,855 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_02-simple_racefree.i[30176,30189] [2023-09-01 10:44:01,874 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:44:01,889 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:44:01,927 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_02-simple_racefree.i[30176,30189] [2023-09-01 10:44:01,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:44:01,976 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:44:01,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:01 WrapperNode [2023-09-01 10:44:01,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:44:01,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:44:01,978 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:44:01,978 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:44:01,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:01" (1/1) ... [2023-09-01 10:44:02,002 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:01" (1/1) ... [2023-09-01 10:44:02,019 INFO L138 Inliner]: procedures = 170, calls = 30, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 80 [2023-09-01 10:44:02,020 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:44:02,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:44:02,021 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:44:02,021 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:44:02,028 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:01" (1/1) ... [2023-09-01 10:44:02,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:01" (1/1) ... [2023-09-01 10:44:02,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:01" (1/1) ... [2023-09-01 10:44:02,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:01" (1/1) ... [2023-09-01 10:44:02,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:01" (1/1) ... [2023-09-01 10:44:02,041 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:01" (1/1) ... [2023-09-01 10:44:02,042 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:01" (1/1) ... [2023-09-01 10:44:02,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:01" (1/1) ... [2023-09-01 10:44:02,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:44:02,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:44:02,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:44:02,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:44:02,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:01" (1/1) ... [2023-09-01 10:44:02,055 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:44:02,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:44:02,078 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-09-01 10:44:02,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-09-01 10:44:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:44:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:44:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:44:02,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:44:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:44:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:44:02,122 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:44:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:44:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:44:02,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:44:02,122 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:44:02,124 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 10:44:02,287 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:44:02,289 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:44:02,499 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:44:02,505 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:44:02,505 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-09-01 10:44:02,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:44:02 BoogieIcfgContainer [2023-09-01 10:44:02,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:44:02,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:44:02,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:44:02,511 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:44:02,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:44:01" (1/3) ... [2023-09-01 10:44:02,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c591fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:44:02, skipping insertion in model container [2023-09-01 10:44:02,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:44:01" (2/3) ... [2023-09-01 10:44:02,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51c591fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:44:02, skipping insertion in model container [2023-09-01 10:44:02,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:44:02" (3/3) ... [2023-09-01 10:44:02,514 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_02-simple_racefree.i [2023-09-01 10:44:02,521 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:44:02,530 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:44:02,530 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 10:44:02,531 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:44:02,594 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 10:44:02,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 108 transitions, 224 flow [2023-09-01 10:44:02,699 INFO L130 PetriNetUnfolder]: 17/141 cut-off events. [2023-09-01 10:44:02,699 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:44:02,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 147 conditions, 141 events. 17/141 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 302 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2023-09-01 10:44:02,704 INFO L82 GeneralOperation]: Start removeDead. Operand has 99 places, 108 transitions, 224 flow [2023-09-01 10:44:02,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 103 transitions, 211 flow [2023-09-01 10:44:02,711 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:02,719 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 103 transitions, 211 flow [2023-09-01 10:44:02,721 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 103 transitions, 211 flow [2023-09-01 10:44:02,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 103 transitions, 211 flow [2023-09-01 10:44:02,745 INFO L130 PetriNetUnfolder]: 16/136 cut-off events. [2023-09-01 10:44:02,745 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:44:02,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 136 events. 16/136 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 287 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 68. Up to 4 conditions per place. [2023-09-01 10:44:02,747 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-09-01 10:44:05,286 INFO L134 LiptonReduction]: Checked pairs total: 3620 [2023-09-01 10:44:05,287 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-09-01 10:44:05,298 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:05,304 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;@2b37c715, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:05,304 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:05,309 INFO L130 PetriNetUnfolder]: 2/21 cut-off events. [2023-09-01 10:44:05,309 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:44:05,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:05,310 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:44:05,310 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:05,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:05,319 INFO L85 PathProgramCache]: Analyzing trace with hash -601168239, now seen corresponding path program 1 times [2023-09-01 10:44:05,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:05,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925045611] [2023-09-01 10:44:05,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:05,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:05,441 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:05,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:05,508 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:05,509 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:05,511 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:05,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:44:05,513 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:05,521 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:05,522 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:05,522 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:44:05,545 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:44:05,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 138 transitions, 294 flow [2023-09-01 10:44:05,590 INFO L130 PetriNetUnfolder]: 31/228 cut-off events. [2023-09-01 10:44:05,590 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:44:05,592 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 228 events. 31/228 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 143. Up to 8 conditions per place. [2023-09-01 10:44:05,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 124 places, 138 transitions, 294 flow [2023-09-01 10:44:05,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 138 transitions, 294 flow [2023-09-01 10:44:05,594 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:05,594 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 138 transitions, 294 flow [2023-09-01 10:44:05,595 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 138 transitions, 294 flow [2023-09-01 10:44:05,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 138 transitions, 294 flow [2023-09-01 10:44:05,615 INFO L130 PetriNetUnfolder]: 31/228 cut-off events. [2023-09-01 10:44:05,615 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:44:05,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 228 events. 31/228 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 596 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 143. Up to 8 conditions per place. [2023-09-01 10:44:05,621 INFO L119 LiptonReduction]: Number of co-enabled transitions 6552 [2023-09-01 10:44:08,040 INFO L134 LiptonReduction]: Checked pairs total: 17421 [2023-09-01 10:44:08,040 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-09-01 10:44:08,042 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:08,044 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;@2b37c715, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:08,044 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:08,050 INFO L130 PetriNetUnfolder]: 12/60 cut-off events. [2023-09-01 10:44:08,050 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 10:44:08,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:08,050 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:44:08,051 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:08,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:08,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1661799328, now seen corresponding path program 1 times [2023-09-01 10:44:08,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:08,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436958631] [2023-09-01 10:44:08,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:08,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:08,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:08,080 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:08,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:08,106 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:08,106 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:08,106 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:08,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:44:08,107 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:08,107 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:08,107 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:08,108 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:44:08,129 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 10:44:08,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 168 transitions, 366 flow [2023-09-01 10:44:08,165 INFO L130 PetriNetUnfolder]: 50/346 cut-off events. [2023-09-01 10:44:08,166 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:44:08,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 346 events. 50/346 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1041 event pairs, 1 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 236. Up to 16 conditions per place. [2023-09-01 10:44:08,169 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 168 transitions, 366 flow [2023-09-01 10:44:08,172 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 168 transitions, 366 flow [2023-09-01 10:44:08,172 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:08,172 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 168 transitions, 366 flow [2023-09-01 10:44:08,172 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 168 transitions, 366 flow [2023-09-01 10:44:08,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 168 transitions, 366 flow [2023-09-01 10:44:08,209 INFO L130 PetriNetUnfolder]: 50/346 cut-off events. [2023-09-01 10:44:08,210 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:44:08,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 346 events. 50/346 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1041 event pairs, 1 based on Foata normal form. 0/288 useless extension candidates. Maximal degree in co-relation 236. Up to 16 conditions per place. [2023-09-01 10:44:08,222 INFO L119 LiptonReduction]: Number of co-enabled transitions 12432 [2023-09-01 10:44:10,669 INFO L134 LiptonReduction]: Checked pairs total: 36170 [2023-09-01 10:44:10,669 INFO L136 LiptonReduction]: Total number of compositions: 115 [2023-09-01 10:44:10,671 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:10,672 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;@2b37c715, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:10,672 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:10,679 INFO L130 PetriNetUnfolder]: 19/91 cut-off events. [2023-09-01 10:44:10,680 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 10:44:10,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:10,680 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:44:10,680 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:10,681 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:10,681 INFO L85 PathProgramCache]: Analyzing trace with hash -2088555563, now seen corresponding path program 1 times [2023-09-01 10:44:10,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:10,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696934543] [2023-09-01 10:44:10,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:10,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:10,706 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:10,728 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:10,728 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:10,729 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:10,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:44:10,729 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:10,730 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:10,730 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:10,730 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:44:10,747 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:44:10,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 198 transitions, 440 flow [2023-09-01 10:44:10,815 INFO L130 PetriNetUnfolder]: 81/528 cut-off events. [2023-09-01 10:44:10,815 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:44:10,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 528 events. 81/528 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1873 event pairs, 6 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 366. Up to 32 conditions per place. [2023-09-01 10:44:10,821 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 198 transitions, 440 flow [2023-09-01 10:44:10,825 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 198 transitions, 440 flow [2023-09-01 10:44:10,825 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:10,825 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 174 places, 198 transitions, 440 flow [2023-09-01 10:44:10,826 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 174 places, 198 transitions, 440 flow [2023-09-01 10:44:10,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 198 transitions, 440 flow [2023-09-01 10:44:10,891 INFO L130 PetriNetUnfolder]: 81/528 cut-off events. [2023-09-01 10:44:10,891 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:44:10,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 583 conditions, 528 events. 81/528 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1873 event pairs, 6 based on Foata normal form. 0/442 useless extension candidates. Maximal degree in co-relation 366. Up to 32 conditions per place. [2023-09-01 10:44:10,912 INFO L119 LiptonReduction]: Number of co-enabled transitions 20048 [2023-09-01 10:44:13,378 INFO L134 LiptonReduction]: Checked pairs total: 56129 [2023-09-01 10:44:13,378 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-09-01 10:44:13,380 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:13,381 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;@2b37c715, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:13,381 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:13,391 INFO L130 PetriNetUnfolder]: 33/140 cut-off events. [2023-09-01 10:44:13,392 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 10:44:13,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:13,392 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:13,392 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:13,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:13,393 INFO L85 PathProgramCache]: Analyzing trace with hash 273609228, now seen corresponding path program 1 times [2023-09-01 10:44:13,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:13,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641116731] [2023-09-01 10:44:13,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:13,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:13,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:13,420 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:13,441 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:13,441 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:13,442 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:13,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:44:13,442 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:13,442 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:13,443 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:13,443 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:44:13,463 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 10:44:13,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 228 transitions, 516 flow [2023-09-01 10:44:13,583 INFO L130 PetriNetUnfolder]: 140/842 cut-off events. [2023-09-01 10:44:13,583 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:44:13,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 842 events. 140/842 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3587 event pairs, 23 based on Foata normal form. 0/712 useless extension candidates. Maximal degree in co-relation 573. Up to 80 conditions per place. [2023-09-01 10:44:13,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 199 places, 228 transitions, 516 flow [2023-09-01 10:44:13,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 199 places, 228 transitions, 516 flow [2023-09-01 10:44:13,597 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:13,597 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 199 places, 228 transitions, 516 flow [2023-09-01 10:44:13,598 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 199 places, 228 transitions, 516 flow [2023-09-01 10:44:13,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 199 places, 228 transitions, 516 flow [2023-09-01 10:44:13,694 INFO L130 PetriNetUnfolder]: 140/842 cut-off events. [2023-09-01 10:44:13,695 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:44:13,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 953 conditions, 842 events. 140/842 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3587 event pairs, 23 based on Foata normal form. 0/712 useless extension candidates. Maximal degree in co-relation 573. Up to 80 conditions per place. [2023-09-01 10:44:13,729 INFO L119 LiptonReduction]: Number of co-enabled transitions 29400 [2023-09-01 10:44:16,286 INFO L134 LiptonReduction]: Checked pairs total: 84497 [2023-09-01 10:44:16,287 INFO L136 LiptonReduction]: Total number of compositions: 145 [2023-09-01 10:44:16,289 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:16,289 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;@2b37c715, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:16,289 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:16,302 INFO L130 PetriNetUnfolder]: 41/180 cut-off events. [2023-09-01 10:44:16,303 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 10:44:16,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:16,303 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:16,303 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:16,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:16,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1963524166, now seen corresponding path program 1 times [2023-09-01 10:44:16,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:16,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661792657] [2023-09-01 10:44:16,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:16,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:16,347 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:16,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:16,386 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:16,390 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:16,390 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:16,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:44:16,391 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:16,392 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:16,392 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:16,394 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:44:16,428 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 10:44:16,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 258 transitions, 594 flow [2023-09-01 10:44:16,631 INFO L130 PetriNetUnfolder]: 263/1428 cut-off events. [2023-09-01 10:44:16,631 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:44:16,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 1428 events. 263/1428 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7569 event pairs, 72 based on Foata normal form. 0/1222 useless extension candidates. Maximal degree in co-relation 941. Up to 192 conditions per place. [2023-09-01 10:44:16,654 INFO L82 GeneralOperation]: Start removeDead. Operand has 224 places, 258 transitions, 594 flow [2023-09-01 10:44:16,670 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 258 transitions, 594 flow [2023-09-01 10:44:16,670 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:16,670 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 224 places, 258 transitions, 594 flow [2023-09-01 10:44:16,674 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 224 places, 258 transitions, 594 flow [2023-09-01 10:44:16,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 224 places, 258 transitions, 594 flow [2023-09-01 10:44:16,867 INFO L130 PetriNetUnfolder]: 263/1428 cut-off events. [2023-09-01 10:44:16,868 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:44:16,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1660 conditions, 1428 events. 263/1428 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 7569 event pairs, 72 based on Foata normal form. 0/1222 useless extension candidates. Maximal degree in co-relation 941. Up to 192 conditions per place. [2023-09-01 10:44:16,939 INFO L119 LiptonReduction]: Number of co-enabled transitions 40488 [2023-09-01 10:44:19,730 INFO L134 LiptonReduction]: Checked pairs total: 131767 [2023-09-01 10:44:19,730 INFO L136 LiptonReduction]: Total number of compositions: 157 [2023-09-01 10:44:19,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:19,732 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;@2b37c715, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:19,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:19,751 INFO L130 PetriNetUnfolder]: 62/249 cut-off events. [2023-09-01 10:44:19,751 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 10:44:19,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:19,752 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:19,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:19,752 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:19,753 INFO L85 PathProgramCache]: Analyzing trace with hash 644110489, now seen corresponding path program 1 times [2023-09-01 10:44:19,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:19,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103845101] [2023-09-01 10:44:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:19,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:19,774 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:19,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:19,794 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:19,794 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:19,795 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:19,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:44:19,795 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:19,796 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:19,796 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:19,796 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:44:19,818 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 10:44:19,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 288 transitions, 674 flow [2023-09-01 10:44:20,272 INFO L130 PetriNetUnfolder]: 530/2574 cut-off events. [2023-09-01 10:44:20,272 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:44:20,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3072 conditions, 2574 events. 530/2574 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17075 event pairs, 201 based on Foata normal form. 0/2228 useless extension candidates. Maximal degree in co-relation 1646. Up to 448 conditions per place. [2023-09-01 10:44:20,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 288 transitions, 674 flow [2023-09-01 10:44:20,319 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 288 transitions, 674 flow [2023-09-01 10:44:20,319 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:20,320 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 288 transitions, 674 flow [2023-09-01 10:44:20,320 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 288 transitions, 674 flow [2023-09-01 10:44:20,320 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 288 transitions, 674 flow [2023-09-01 10:44:20,781 INFO L130 PetriNetUnfolder]: 530/2574 cut-off events. [2023-09-01 10:44:20,781 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:44:20,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3072 conditions, 2574 events. 530/2574 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 17075 event pairs, 201 based on Foata normal form. 0/2228 useless extension candidates. Maximal degree in co-relation 1646. Up to 448 conditions per place. [2023-09-01 10:44:21,004 INFO L119 LiptonReduction]: Number of co-enabled transitions 53312 [2023-09-01 10:44:23,730 INFO L134 LiptonReduction]: Checked pairs total: 172308 [2023-09-01 10:44:23,730 INFO L136 LiptonReduction]: Total number of compositions: 175 [2023-09-01 10:44:23,732 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:23,732 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;@2b37c715, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:23,732 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:23,768 INFO L130 PetriNetUnfolder]: 76/314 cut-off events. [2023-09-01 10:44:23,768 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 10:44:23,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:23,769 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:23,769 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:23,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:23,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1701479946, now seen corresponding path program 1 times [2023-09-01 10:44:23,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:23,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545839361] [2023-09-01 10:44:23,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:23,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:23,808 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:23,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:23,852 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:23,852 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:23,852 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:23,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:44:23,853 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:23,853 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:23,853 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:23,854 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 10:44:23,880 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:44:23,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 318 transitions, 756 flow [2023-09-01 10:44:24,923 INFO L130 PetriNetUnfolder]: 1117/4872 cut-off events. [2023-09-01 10:44:24,924 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:44:25,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5957 conditions, 4872 events. 1117/4872 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 38095 event pairs, 522 based on Foata normal form. 0/4258 useless extension candidates. Maximal degree in co-relation 3056. Up to 1024 conditions per place. [2023-09-01 10:44:25,005 INFO L82 GeneralOperation]: Start removeDead. Operand has 274 places, 318 transitions, 756 flow [2023-09-01 10:44:25,047 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 274 places, 318 transitions, 756 flow [2023-09-01 10:44:25,047 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:25,048 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 274 places, 318 transitions, 756 flow [2023-09-01 10:44:25,049 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 274 places, 318 transitions, 756 flow [2023-09-01 10:44:25,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 274 places, 318 transitions, 756 flow [2023-09-01 10:44:25,994 INFO L130 PetriNetUnfolder]: 1117/4872 cut-off events. [2023-09-01 10:44:25,994 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:44:26,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5957 conditions, 4872 events. 1117/4872 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 38095 event pairs, 522 based on Foata normal form. 0/4258 useless extension candidates. Maximal degree in co-relation 3056. Up to 1024 conditions per place. [2023-09-01 10:44:26,198 INFO L119 LiptonReduction]: Number of co-enabled transitions 67872 [2023-09-01 10:44:29,031 INFO L134 LiptonReduction]: Checked pairs total: 226502 [2023-09-01 10:44:29,031 INFO L136 LiptonReduction]: Total number of compositions: 187 [2023-09-01 10:44:29,032 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:29,033 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;@2b37c715, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:29,033 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:29,071 INFO L130 PetriNetUnfolder]: 113/435 cut-off events. [2023-09-01 10:44:29,072 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 10:44:29,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:29,072 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:29,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:29,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:29,073 INFO L85 PathProgramCache]: Analyzing trace with hash 507352339, now seen corresponding path program 1 times [2023-09-01 10:44:29,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:29,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825435652] [2023-09-01 10:44:29,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:29,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:29,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:29,095 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:29,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:29,114 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:29,114 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:29,115 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:29,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:44:29,115 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:29,115 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:29,116 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:29,116 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 10:44:29,144 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 10:44:29,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 348 transitions, 840 flow [2023-09-01 10:44:30,904 INFO L130 PetriNetUnfolder]: 2408/9538 cut-off events. [2023-09-01 10:44:30,904 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:44:31,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11915 conditions, 9538 events. 2408/9538 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86119 event pairs, 1291 based on Foata normal form. 0/8400 useless extension candidates. Maximal degree in co-relation 5939. Up to 2304 conditions per place. [2023-09-01 10:44:31,018 INFO L82 GeneralOperation]: Start removeDead. Operand has 299 places, 348 transitions, 840 flow [2023-09-01 10:44:31,109 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 299 places, 348 transitions, 840 flow [2023-09-01 10:44:31,109 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:31,110 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 299 places, 348 transitions, 840 flow [2023-09-01 10:44:31,110 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 299 places, 348 transitions, 840 flow [2023-09-01 10:44:31,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 348 transitions, 840 flow [2023-09-01 10:44:32,722 INFO L130 PetriNetUnfolder]: 2408/9538 cut-off events. [2023-09-01 10:44:32,722 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:44:32,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11915 conditions, 9538 events. 2408/9538 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 86119 event pairs, 1291 based on Foata normal form. 0/8400 useless extension candidates. Maximal degree in co-relation 5939. Up to 2304 conditions per place. [2023-09-01 10:44:33,126 INFO L119 LiptonReduction]: Number of co-enabled transitions 84168 [2023-09-01 10:44:35,974 INFO L134 LiptonReduction]: Checked pairs total: 251928 [2023-09-01 10:44:35,974 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-09-01 10:44:35,975 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:35,976 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;@2b37c715, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:35,976 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:36,030 INFO L130 PetriNetUnfolder]: 159/588 cut-off events. [2023-09-01 10:44:36,031 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 10:44:36,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:36,031 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:36,031 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:36,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:36,032 INFO L85 PathProgramCache]: Analyzing trace with hash 227014318, now seen corresponding path program 1 times [2023-09-01 10:44:36,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:36,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726092065] [2023-09-01 10:44:36,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:36,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:36,051 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:36,069 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:36,069 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:36,069 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:36,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:44:36,070 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:36,070 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:36,070 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:36,071 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 10:44:36,100 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 10:44:36,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 378 transitions, 926 flow [2023-09-01 10:44:39,770 INFO L130 PetriNetUnfolder]: 5235/19068 cut-off events. [2023-09-01 10:44:39,770 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:44:40,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24274 conditions, 19068 events. 5235/19068 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 195320 event pairs, 3084 based on Foata normal form. 0/16894 useless extension candidates. Maximal degree in co-relation 11895. Up to 5120 conditions per place. [2023-09-01 10:44:40,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 324 places, 378 transitions, 926 flow [2023-09-01 10:44:40,192 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 324 places, 378 transitions, 926 flow [2023-09-01 10:44:40,192 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:40,192 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 324 places, 378 transitions, 926 flow [2023-09-01 10:44:40,192 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 324 places, 378 transitions, 926 flow [2023-09-01 10:44:40,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 324 places, 378 transitions, 926 flow [2023-09-01 10:44:43,845 INFO L130 PetriNetUnfolder]: 5235/19068 cut-off events. [2023-09-01 10:44:43,846 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:44:44,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24274 conditions, 19068 events. 5235/19068 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 195320 event pairs, 3084 based on Foata normal form. 0/16894 useless extension candidates. Maximal degree in co-relation 11895. Up to 5120 conditions per place. [2023-09-01 10:44:44,930 INFO L119 LiptonReduction]: Number of co-enabled transitions 102200 [2023-09-01 10:44:47,791 INFO L134 LiptonReduction]: Checked pairs total: 313098 [2023-09-01 10:44:47,791 INFO L136 LiptonReduction]: Total number of compositions: 217 [2023-09-01 10:44:47,792 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:44:47,793 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;@2b37c715, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:44:47,793 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:44:47,863 INFO L130 PetriNetUnfolder]: 234/818 cut-off events. [2023-09-01 10:44:47,863 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 10:44:47,864 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:44:47,864 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:44:47,864 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:44:47,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:44:47,865 INFO L85 PathProgramCache]: Analyzing trace with hash 1704156933, now seen corresponding path program 1 times [2023-09-01 10:44:47,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:44:47,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55566604] [2023-09-01 10:44:47,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:44:47,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:44:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:47,884 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:44:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:44:47,902 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:44:47,903 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:44:47,903 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:44:47,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:44:47,903 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:44:47,904 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:44:47,904 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:44:47,904 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 10:44:47,931 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 10:44:47,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 408 transitions, 1014 flow [2023-09-01 10:44:56,233 INFO L130 PetriNetUnfolder]: 11390/38582 cut-off events. [2023-09-01 10:44:56,233 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:44:56,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49946 conditions, 38582 events. 11390/38582 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 443949 event pairs, 7181 based on Foata normal form. 0/34348 useless extension candidates. Maximal degree in co-relation 24252. Up to 11264 conditions per place. [2023-09-01 10:44:56,996 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 408 transitions, 1014 flow [2023-09-01 10:44:57,414 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 349 places, 408 transitions, 1014 flow [2023-09-01 10:44:57,414 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:44:57,415 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 349 places, 408 transitions, 1014 flow [2023-09-01 10:44:57,415 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 349 places, 408 transitions, 1014 flow [2023-09-01 10:44:57,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 408 transitions, 1014 flow [2023-09-01 10:45:05,778 INFO L130 PetriNetUnfolder]: 11390/38582 cut-off events. [2023-09-01 10:45:05,779 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:45:06,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49946 conditions, 38582 events. 11390/38582 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 443949 event pairs, 7181 based on Foata normal form. 0/34348 useless extension candidates. Maximal degree in co-relation 24252. Up to 11264 conditions per place. [2023-09-01 10:45:08,237 INFO L119 LiptonReduction]: Number of co-enabled transitions 121968 [2023-09-01 10:45:11,529 INFO L134 LiptonReduction]: Checked pairs total: 417564 [2023-09-01 10:45:11,529 INFO L136 LiptonReduction]: Total number of compositions: 235 [2023-09-01 10:45:11,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:45:11,530 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;@2b37c715, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:45:11,530 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:45:11,635 INFO L130 PetriNetUnfolder]: 349/1143 cut-off events. [2023-09-01 10:45:11,635 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 10:45:11,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:45:11,635 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:45:11,635 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:45:11,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:45:11,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1773584118, now seen corresponding path program 1 times [2023-09-01 10:45:11,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:45:11,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195003444] [2023-09-01 10:45:11,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:45:11,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:45:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:45:11,662 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:45:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:45:11,682 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:45:11,682 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:45:11,682 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:45:11,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 10:45:11,682 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:45:11,683 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:45:11,683 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:45:11,683 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 10:45:11,717 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:45:11,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 438 transitions, 1104 flow [2023-09-01 10:45:29,948 INFO L130 PetriNetUnfolder]: 24713/78576 cut-off events. [2023-09-01 10:45:29,948 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:45:33,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103267 conditions, 78576 events. 24713/78576 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 974700 event pairs, 16398 based on Foata normal form. 0/70234 useless extension candidates. Maximal degree in co-relation 49922. Up to 24576 conditions per place. [2023-09-01 10:45:33,462 INFO L82 GeneralOperation]: Start removeDead. Operand has 374 places, 438 transitions, 1104 flow [2023-09-01 10:45:34,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 438 transitions, 1104 flow [2023-09-01 10:45:34,643 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:45:34,643 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 374 places, 438 transitions, 1104 flow [2023-09-01 10:45:34,644 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 374 places, 438 transitions, 1104 flow [2023-09-01 10:45:34,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 374 places, 438 transitions, 1104 flow [2023-09-01 10:45:53,450 INFO L130 PetriNetUnfolder]: 24713/78576 cut-off events. [2023-09-01 10:45:53,450 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:45:57,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103267 conditions, 78576 events. 24713/78576 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1397. Compared 974700 event pairs, 16398 based on Foata normal form. 0/70234 useless extension candidates. Maximal degree in co-relation 49922. Up to 24576 conditions per place. [2023-09-01 10:46:03,073 INFO L119 LiptonReduction]: Number of co-enabled transitions 143472 [2023-09-01 10:46:06,411 INFO L134 LiptonReduction]: Checked pairs total: 495871 [2023-09-01 10:46:06,411 INFO L136 LiptonReduction]: Total number of compositions: 250 [2023-09-01 10:46:06,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:46:06,415 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;@2b37c715, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:46:06,415 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:46:06,557 INFO L130 PetriNetUnfolder]: 560/1685 cut-off events. [2023-09-01 10:46:06,558 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 10:46:06,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:46:06,558 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:46:06,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:46:06,558 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:46:06,559 INFO L85 PathProgramCache]: Analyzing trace with hash -932400929, now seen corresponding path program 1 times [2023-09-01 10:46:06,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:46:06,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008983502] [2023-09-01 10:46:06,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:46:06,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:46:06,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:46:06,580 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:46:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:46:06,601 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:46:06,601 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:46:06,601 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:46:06,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 10:46:06,602 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:46:06,602 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:46:06,602 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:46:06,603 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 10:46:06,632 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 10:46:06,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 468 transitions, 1196 flow [2023-09-01 10:46:48,211 INFO L130 PetriNetUnfolder]: 53396/160554 cut-off events. [2023-09-01 10:46:48,211 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:46:56,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213933 conditions, 160554 events. 53396/160554 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2777. Compared 2176460 event pairs, 36879 based on Foata normal form. 0/144008 useless extension candidates. Maximal degree in co-relation 103241. Up to 53248 conditions per place. [2023-09-01 10:46:56,918 INFO L82 GeneralOperation]: Start removeDead. Operand has 399 places, 468 transitions, 1196 flow [2023-09-01 10:47:00,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 468 transitions, 1196 flow [2023-09-01 10:47:00,106 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:47:00,106 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 399 places, 468 transitions, 1196 flow [2023-09-01 10:47:00,106 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 399 places, 468 transitions, 1196 flow [2023-09-01 10:47:00,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 468 transitions, 1196 flow [2023-09-01 10:47:42,393 INFO L130 PetriNetUnfolder]: 53396/160554 cut-off events. [2023-09-01 10:47:42,394 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:47:50,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213933 conditions, 160554 events. 53396/160554 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2777. Compared 2176460 event pairs, 36879 based on Foata normal form. 0/144008 useless extension candidates. Maximal degree in co-relation 103241. Up to 53248 conditions per place. [2023-09-01 10:48:06,315 INFO L119 LiptonReduction]: Number of co-enabled transitions 166712 [2023-09-01 10:48:09,630 INFO L134 LiptonReduction]: Checked pairs total: 575441 [2023-09-01 10:48:09,630 INFO L136 LiptonReduction]: Total number of compositions: 262 [2023-09-01 10:48:09,633 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:48:09,636 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;@2b37c715, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:48:09,637 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:48:09,863 INFO L130 PetriNetUnfolder]: 926/2556 cut-off events. [2023-09-01 10:48:09,863 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 10:48:09,863 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:48:09,863 INFO L208 CegarLoopForPetriNet]: trace histogram [14, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:48:09,863 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:48:09,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:48:09,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1908472988, now seen corresponding path program 1 times [2023-09-01 10:48:09,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:48:09,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859244998] [2023-09-01 10:48:09,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:48:09,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:48:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:09,884 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:48:09,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:48:09,907 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:48:09,907 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:48:09,907 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:48:09,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 10:48:09,908 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:48:09,908 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:48:09,908 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:48:09,908 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 10:48:09,940 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 10:48:09,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 424 places, 498 transitions, 1290 flow