./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_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_20-callback_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 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f --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 10:55:57,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 10:55:57,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 10:55:57,333 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 10:55:57,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 10:55:57,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 10:55:57,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 10:55:57,343 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 10:55:57,345 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 10:55:57,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 10:55:57,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 10:55:57,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 10:55:57,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 10:55:57,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 10:55:57,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 10:55:57,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 10:55:57,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 10:55:57,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 10:55:57,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 10:55:57,375 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 10:55:57,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 10:55:57,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 10:55:57,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 10:55:57,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 10:55:57,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 10:55:57,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 10:55:57,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 10:55:57,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 10:55:57,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 10:55:57,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 10:55:57,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 10:55:57,395 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 10:55:57,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 10:55:57,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 10:55:57,398 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 10:55:57,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 10:55:57,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 10:55:57,399 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 10:55:57,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 10:55:57,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 10:55:57,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 10:55:57,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 10:55:57,434 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 10:55:57,435 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 10:55:57,436 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 10:55:57,436 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 10:55:57,437 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 10:55:57,437 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 10:55:57,437 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 10:55:57,438 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 10:55:57,438 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 10:55:57,438 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 10:55:57,439 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 10:55:57,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 10:55:57,439 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 10:55:57,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 10:55:57,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 10:55:57,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 10:55:57,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 10:55:57,440 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 10:55:57,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 10:55:57,440 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 10:55:57,441 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 10:55:57,441 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 10:55:57,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 10:55:57,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 10:55:57,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:55:57,442 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 10:55:57,442 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 10:55:57,442 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 10:55:57,442 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 10:55:57,442 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 10:55:57,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 10:55:57,443 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 10:55:57,443 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 10:55:57,443 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 10:55:57,443 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 10:55:57,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e91816f101a416d37c086dd7185cfb4e2bfa63eb286e4a418cb94db27cf2f6f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 10:55:57,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 10:55:57,771 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 10:55:57,773 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 10:55:57,774 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 10:55:57,775 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 10:55:57,776 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_racefree.i [2023-09-01 10:55:59,015 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 10:55:59,287 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 10:55:59,288 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_20-callback_racefree.i [2023-09-01 10:55:59,298 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d067b674/f27bf16bf8a64406b5e375970c5fdf2a/FLAG8ecab1474 [2023-09-01 10:55:59,312 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d067b674/f27bf16bf8a64406b5e375970c5fdf2a [2023-09-01 10:55:59,315 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 10:55:59,316 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 10:55:59,317 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 10:55:59,318 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 10:55:59,320 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 10:55:59,321 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:55:59" (1/1) ... [2023-09-01 10:55:59,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d4f835d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:55:59, skipping insertion in model container [2023-09-01 10:55:59,322 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 10:55:59" (1/1) ... [2023-09-01 10:55:59,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 10:55:59,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 10:55:59,604 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_20-callback_racefree.i[30212,30225] [2023-09-01 10:55:59,634 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:55:59,648 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 10:55:59,689 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_20-callback_racefree.i[30212,30225] [2023-09-01 10:55:59,703 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 10:55:59,777 WARN L667 CHandler]: The function callback is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 10:55:59,786 INFO L208 MainTranslator]: Completed translation [2023-09-01 10:55:59,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:55:59 WrapperNode [2023-09-01 10:55:59,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 10:55:59,788 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 10:55:59,788 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 10:55:59,788 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 10:55:59,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:55:59" (1/1) ... [2023-09-01 10:55:59,804 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:55:59" (1/1) ... [2023-09-01 10:55:59,824 INFO L138 Inliner]: procedures = 173, calls = 33, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 135 [2023-09-01 10:55:59,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 10:55:59,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 10:55:59,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 10:55:59,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 10:55:59,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:55:59" (1/1) ... [2023-09-01 10:55:59,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:55:59" (1/1) ... [2023-09-01 10:55:59,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:55:59" (1/1) ... [2023-09-01 10:55:59,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:55:59" (1/1) ... [2023-09-01 10:55:59,845 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:55:59" (1/1) ... [2023-09-01 10:55:59,857 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:55:59" (1/1) ... [2023-09-01 10:55:59,865 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:55:59" (1/1) ... [2023-09-01 10:55:59,866 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:55:59" (1/1) ... [2023-09-01 10:55:59,868 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 10:55:59,869 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 10:55:59,875 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 10:55:59,875 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 10:55:59,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:55:59" (1/1) ... [2023-09-01 10:55:59,886 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 10:55:59,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 10:55:59,909 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 10:55:59,911 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 10:55:59,935 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 10:55:59,935 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 10:55:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-09-01 10:55:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 10:55:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 10:55:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-09-01 10:55:59,936 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-09-01 10:55:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 10:55:59,936 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 10:55:59,937 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 10:55:59,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 10:55:59,938 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 10:56:00,048 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 10:56:00,049 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 10:56:00,277 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 10:56:00,283 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 10:56:00,283 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-09-01 10:56:00,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:56:00 BoogieIcfgContainer [2023-09-01 10:56:00,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 10:56:00,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 10:56:00,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 10:56:00,289 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 10:56:00,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 10:55:59" (1/3) ... [2023-09-01 10:56:00,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ef91fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:56:00, skipping insertion in model container [2023-09-01 10:56:00,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 10:55:59" (2/3) ... [2023-09-01 10:56:00,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ef91fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 10:56:00, skipping insertion in model container [2023-09-01 10:56:00,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 10:56:00" (3/3) ... [2023-09-01 10:56:00,291 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_20-callback_racefree.i [2023-09-01 10:56:00,298 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 10:56:00,305 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 10:56:00,305 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 10:56:00,306 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 10:56:00,371 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-09-01 10:56:00,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 137 transitions, 282 flow [2023-09-01 10:56:00,521 INFO L130 PetriNetUnfolder]: 26/207 cut-off events. [2023-09-01 10:56:00,522 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-09-01 10:56:00,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 207 events. 26/207 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 534 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-09-01 10:56:00,529 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 137 transitions, 282 flow [2023-09-01 10:56:00,536 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 132 transitions, 269 flow [2023-09-01 10:56:00,540 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:00,560 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 132 transitions, 269 flow [2023-09-01 10:56:00,566 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 132 transitions, 269 flow [2023-09-01 10:56:00,570 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 132 transitions, 269 flow [2023-09-01 10:56:00,614 INFO L130 PetriNetUnfolder]: 25/202 cut-off events. [2023-09-01 10:56:00,614 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:56:00,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 202 events. 25/202 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 496 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 105. Up to 6 conditions per place. [2023-09-01 10:56:00,619 INFO L119 LiptonReduction]: Number of co-enabled transitions 3040 [2023-09-01 10:56:03,675 INFO L134 LiptonReduction]: Checked pairs total: 4319 [2023-09-01 10:56:03,675 INFO L136 LiptonReduction]: Total number of compositions: 121 [2023-09-01 10:56:03,687 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:03,692 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;@53df414f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:03,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:03,697 INFO L130 PetriNetUnfolder]: 6/26 cut-off events. [2023-09-01 10:56:03,697 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 10:56:03,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:03,697 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-09-01 10:56:03,698 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:03,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:03,702 INFO L85 PathProgramCache]: Analyzing trace with hash -2020137906, now seen corresponding path program 1 times [2023-09-01 10:56:03,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:03,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495325792] [2023-09-01 10:56:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:03,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:03,842 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:03,893 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:03,894 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:03,895 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:03,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 10:56:03,897 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:03,899 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:03,899 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:03,900 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-09-01 10:56:03,927 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-09-01 10:56:03,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-09-01 10:56:03,970 INFO L130 PetriNetUnfolder]: 43/323 cut-off events. [2023-09-01 10:56:03,971 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:56:03,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 323 events. 43/323 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1108 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-09-01 10:56:03,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 159 transitions, 336 flow [2023-09-01 10:56:03,975 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 159 transitions, 336 flow [2023-09-01 10:56:03,975 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:03,975 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 159 transitions, 336 flow [2023-09-01 10:56:03,976 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 159 transitions, 336 flow [2023-09-01 10:56:03,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 159 transitions, 336 flow [2023-09-01 10:56:04,005 INFO L130 PetriNetUnfolder]: 43/323 cut-off events. [2023-09-01 10:56:04,005 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-09-01 10:56:04,009 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337 conditions, 323 events. 43/323 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1108 event pairs, 0 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 209. Up to 9 conditions per place. [2023-09-01 10:56:04,014 INFO L119 LiptonReduction]: Number of co-enabled transitions 7320 [2023-09-01 10:56:06,905 INFO L134 LiptonReduction]: Checked pairs total: 11783 [2023-09-01 10:56:06,906 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-09-01 10:56:06,913 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:06,915 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;@53df414f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:06,915 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:06,921 INFO L130 PetriNetUnfolder]: 21/70 cut-off events. [2023-09-01 10:56:06,921 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 10:56:06,921 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:06,921 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-09-01 10:56:06,922 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:06,922 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:06,922 INFO L85 PathProgramCache]: Analyzing trace with hash -661544501, now seen corresponding path program 1 times [2023-09-01 10:56:06,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:06,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859821441] [2023-09-01 10:56:06,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:06,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:06,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:06,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:06,972 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:06,973 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:06,973 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:06,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 10:56:06,973 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:06,974 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:06,974 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:06,974 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-09-01 10:56:06,990 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 10:56:06,993 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 181 transitions, 392 flow [2023-09-01 10:56:07,042 INFO L130 PetriNetUnfolder]: 65/470 cut-off events. [2023-09-01 10:56:07,044 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:56:07,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 470 events. 65/470 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1841 event pairs, 1 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 331. Up to 16 conditions per place. [2023-09-01 10:56:07,046 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 181 transitions, 392 flow [2023-09-01 10:56:07,052 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 181 transitions, 392 flow [2023-09-01 10:56:07,053 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:07,053 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 181 transitions, 392 flow [2023-09-01 10:56:07,053 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 181 transitions, 392 flow [2023-09-01 10:56:07,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 181 transitions, 392 flow [2023-09-01 10:56:07,100 INFO L130 PetriNetUnfolder]: 65/470 cut-off events. [2023-09-01 10:56:07,100 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-09-01 10:56:07,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 470 events. 65/470 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1841 event pairs, 1 based on Foata normal form. 0/398 useless extension candidates. Maximal degree in co-relation 331. Up to 16 conditions per place. [2023-09-01 10:56:07,113 INFO L119 LiptonReduction]: Number of co-enabled transitions 12360 [2023-09-01 10:56:09,877 INFO L134 LiptonReduction]: Checked pairs total: 20764 [2023-09-01 10:56:09,877 INFO L136 LiptonReduction]: Total number of compositions: 156 [2023-09-01 10:56:09,879 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:09,880 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;@53df414f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:09,880 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:09,887 INFO L130 PetriNetUnfolder]: 34/110 cut-off events. [2023-09-01 10:56:09,887 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-09-01 10:56:09,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:09,888 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-09-01 10:56:09,888 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:09,888 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:09,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1292801290, now seen corresponding path program 1 times [2023-09-01 10:56:09,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:09,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813194599] [2023-09-01 10:56:09,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:09,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:09,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:09,914 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:09,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:09,933 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:09,933 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:09,934 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:09,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-09-01 10:56:09,934 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:09,935 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:09,935 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:09,935 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-09-01 10:56:09,962 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-09-01 10:56:09,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 203 transitions, 450 flow [2023-09-01 10:56:10,036 INFO L130 PetriNetUnfolder]: 99/681 cut-off events. [2023-09-01 10:56:10,037 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:56:10,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 681 events. 99/681 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2931 event pairs, 6 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 490. Up to 32 conditions per place. [2023-09-01 10:56:10,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 185 places, 203 transitions, 450 flow [2023-09-01 10:56:10,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 185 places, 203 transitions, 450 flow [2023-09-01 10:56:10,046 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:10,046 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 185 places, 203 transitions, 450 flow [2023-09-01 10:56:10,047 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 185 places, 203 transitions, 450 flow [2023-09-01 10:56:10,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 185 places, 203 transitions, 450 flow [2023-09-01 10:56:10,110 INFO L130 PetriNetUnfolder]: 99/681 cut-off events. [2023-09-01 10:56:10,110 INFO L131 PetriNetUnfolder]: For 48/48 co-relation queries the response was YES. [2023-09-01 10:56:10,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 681 events. 99/681 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2931 event pairs, 6 based on Foata normal form. 0/578 useless extension candidates. Maximal degree in co-relation 490. Up to 32 conditions per place. [2023-09-01 10:56:10,132 INFO L119 LiptonReduction]: Number of co-enabled transitions 18320 [2023-09-01 10:56:13,216 INFO L134 LiptonReduction]: Checked pairs total: 35645 [2023-09-01 10:56:13,216 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-09-01 10:56:13,218 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:13,219 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;@53df414f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:13,219 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:13,230 INFO L130 PetriNetUnfolder]: 43/146 cut-off events. [2023-09-01 10:56:13,230 INFO L131 PetriNetUnfolder]: For 23/23 co-relation queries the response was YES. [2023-09-01 10:56:13,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:13,230 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:13,231 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:13,231 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:13,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2005753740, now seen corresponding path program 1 times [2023-09-01 10:56:13,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:13,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879844051] [2023-09-01 10:56:13,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:13,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:13,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:13,254 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:13,274 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:13,274 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:13,275 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:13,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-09-01 10:56:13,275 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:13,276 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:13,276 WARN L233 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:13,276 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2023-09-01 10:56:13,293 INFO L144 ThreadInstanceAdder]: Constructed 5 joinOtherThreadTransitions. [2023-09-01 10:56:13,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 225 transitions, 510 flow [2023-09-01 10:56:13,447 INFO L130 PetriNetUnfolder]: 161/1024 cut-off events. [2023-09-01 10:56:13,447 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:56:13,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 1024 events. 161/1024 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4926 event pairs, 23 based on Foata normal form. 0/874 useless extension candidates. Maximal degree in co-relation 726. Up to 80 conditions per place. [2023-09-01 10:56:13,458 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 225 transitions, 510 flow [2023-09-01 10:56:13,464 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 205 places, 225 transitions, 510 flow [2023-09-01 10:56:13,464 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:13,465 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 225 transitions, 510 flow [2023-09-01 10:56:13,465 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 225 transitions, 510 flow [2023-09-01 10:56:13,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 225 transitions, 510 flow [2023-09-01 10:56:13,617 INFO L130 PetriNetUnfolder]: 161/1024 cut-off events. [2023-09-01 10:56:13,617 INFO L131 PetriNetUnfolder]: For 110/110 co-relation queries the response was YES. [2023-09-01 10:56:13,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1135 conditions, 1024 events. 161/1024 cut-off events. For 110/110 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 4926 event pairs, 23 based on Foata normal form. 0/874 useless extension candidates. Maximal degree in co-relation 726. Up to 80 conditions per place. [2023-09-01 10:56:13,646 INFO L119 LiptonReduction]: Number of co-enabled transitions 25200 [2023-09-01 10:56:16,770 INFO L134 LiptonReduction]: Checked pairs total: 51265 [2023-09-01 10:56:16,770 INFO L136 LiptonReduction]: Total number of compositions: 190 [2023-09-01 10:56:16,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:16,772 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;@53df414f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:16,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:16,784 INFO L130 PetriNetUnfolder]: 58/197 cut-off events. [2023-09-01 10:56:16,785 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2023-09-01 10:56:16,785 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:16,785 INFO L208 CegarLoopForPetriNet]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:16,785 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:16,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:16,786 INFO L85 PathProgramCache]: Analyzing trace with hash 785398442, now seen corresponding path program 1 times [2023-09-01 10:56:16,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:16,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114973226] [2023-09-01 10:56:16,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:16,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:16,808 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:16,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:16,830 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:16,830 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:16,830 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:16,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-09-01 10:56:16,831 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:16,831 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:16,831 WARN L233 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:16,832 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2023-09-01 10:56:16,849 INFO L144 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2023-09-01 10:56:16,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 247 transitions, 572 flow [2023-09-01 10:56:17,071 INFO L130 PetriNetUnfolder]: 287/1639 cut-off events. [2023-09-01 10:56:17,072 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:56:17,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1639 events. 287/1639 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9198 event pairs, 72 based on Foata normal form. 0/1410 useless extension candidates. Maximal degree in co-relation 1123. Up to 192 conditions per place. [2023-09-01 10:56:17,092 INFO L82 GeneralOperation]: Start removeDead. Operand has 225 places, 247 transitions, 572 flow [2023-09-01 10:56:17,106 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 247 transitions, 572 flow [2023-09-01 10:56:17,108 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:17,108 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 225 places, 247 transitions, 572 flow [2023-09-01 10:56:17,109 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 225 places, 247 transitions, 572 flow [2023-09-01 10:56:17,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 225 places, 247 transitions, 572 flow [2023-09-01 10:56:17,311 INFO L130 PetriNetUnfolder]: 287/1639 cut-off events. [2023-09-01 10:56:17,312 INFO L131 PetriNetUnfolder]: For 242/242 co-relation queries the response was YES. [2023-09-01 10:56:17,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1871 conditions, 1639 events. 287/1639 cut-off events. For 242/242 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 9198 event pairs, 72 based on Foata normal form. 0/1410 useless extension candidates. Maximal degree in co-relation 1123. Up to 192 conditions per place. [2023-09-01 10:56:17,403 INFO L119 LiptonReduction]: Number of co-enabled transitions 33000 [2023-09-01 10:56:20,553 INFO L134 LiptonReduction]: Checked pairs total: 63698 [2023-09-01 10:56:20,553 INFO L136 LiptonReduction]: Total number of compositions: 205 [2023-09-01 10:56:20,554 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:20,555 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;@53df414f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:20,555 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:20,573 INFO L130 PetriNetUnfolder]: 76/259 cut-off events. [2023-09-01 10:56:20,573 INFO L131 PetriNetUnfolder]: For 79/79 co-relation queries the response was YES. [2023-09-01 10:56:20,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:20,574 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:20,574 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:20,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:20,574 INFO L85 PathProgramCache]: Analyzing trace with hash 241311924, now seen corresponding path program 1 times [2023-09-01 10:56:20,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:20,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51534967] [2023-09-01 10:56:20,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:20,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:20,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:20,607 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:20,659 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:20,659 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:20,659 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:20,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-09-01 10:56:20,659 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:20,660 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:20,660 WARN L233 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:20,660 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2023-09-01 10:56:20,690 INFO L144 ThreadInstanceAdder]: Constructed 7 joinOtherThreadTransitions. [2023-09-01 10:56:20,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 269 transitions, 636 flow [2023-09-01 10:56:21,106 INFO L130 PetriNetUnfolder]: 557/2814 cut-off events. [2023-09-01 10:56:21,107 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:56:21,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 2814 events. 557/2814 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 18682 event pairs, 201 based on Foata normal form. 0/2442 useless extension candidates. Maximal degree in co-relation 1857. Up to 448 conditions per place. [2023-09-01 10:56:21,139 INFO L82 GeneralOperation]: Start removeDead. Operand has 245 places, 269 transitions, 636 flow [2023-09-01 10:56:21,155 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 245 places, 269 transitions, 636 flow [2023-09-01 10:56:21,155 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:21,155 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 245 places, 269 transitions, 636 flow [2023-09-01 10:56:21,156 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 245 places, 269 transitions, 636 flow [2023-09-01 10:56:21,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 245 places, 269 transitions, 636 flow [2023-09-01 10:56:21,568 INFO L130 PetriNetUnfolder]: 557/2814 cut-off events. [2023-09-01 10:56:21,568 INFO L131 PetriNetUnfolder]: For 525/525 co-relation queries the response was YES. [2023-09-01 10:56:21,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 2814 events. 557/2814 cut-off events. For 525/525 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 18682 event pairs, 201 based on Foata normal form. 0/2442 useless extension candidates. Maximal degree in co-relation 1857. Up to 448 conditions per place. [2023-09-01 10:56:21,663 INFO L119 LiptonReduction]: Number of co-enabled transitions 41720 [2023-09-01 10:56:25,163 INFO L134 LiptonReduction]: Checked pairs total: 82693 [2023-09-01 10:56:25,163 INFO L136 LiptonReduction]: Total number of compositions: 225 [2023-09-01 10:56:25,164 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:25,165 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;@53df414f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:25,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:25,192 INFO L130 PetriNetUnfolder]: 102/346 cut-off events. [2023-09-01 10:56:25,193 INFO L131 PetriNetUnfolder]: For 129/129 co-relation queries the response was YES. [2023-09-01 10:56:25,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:25,193 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:25,193 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:25,194 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:25,194 INFO L85 PathProgramCache]: Analyzing trace with hash 389342412, now seen corresponding path program 1 times [2023-09-01 10:56:25,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:25,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525234155] [2023-09-01 10:56:25,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:25,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:25,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:25,217 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:25,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:25,237 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:25,237 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:25,238 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:25,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-09-01 10:56:25,238 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:25,239 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:25,239 WARN L233 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:25,239 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2023-09-01 10:56:25,263 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-09-01 10:56:25,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 291 transitions, 702 flow [2023-09-01 10:56:26,127 INFO L130 PetriNetUnfolder]: 1147/5141 cut-off events. [2023-09-01 10:56:26,127 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:56:26,185 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6226 conditions, 5141 events. 1147/5141 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 40461 event pairs, 522 based on Foata normal form. 0/4498 useless extension candidates. Maximal degree in co-relation 3296. Up to 1024 conditions per place. [2023-09-01 10:56:26,185 INFO L82 GeneralOperation]: Start removeDead. Operand has 265 places, 291 transitions, 702 flow [2023-09-01 10:56:26,215 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 265 places, 291 transitions, 702 flow [2023-09-01 10:56:26,215 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:26,215 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 265 places, 291 transitions, 702 flow [2023-09-01 10:56:26,216 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 265 places, 291 transitions, 702 flow [2023-09-01 10:56:26,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 265 places, 291 transitions, 702 flow [2023-09-01 10:56:27,048 INFO L130 PetriNetUnfolder]: 1147/5141 cut-off events. [2023-09-01 10:56:27,048 INFO L131 PetriNetUnfolder]: For 1136/1136 co-relation queries the response was YES. [2023-09-01 10:56:27,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6226 conditions, 5141 events. 1147/5141 cut-off events. For 1136/1136 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 40461 event pairs, 522 based on Foata normal form. 0/4498 useless extension candidates. Maximal degree in co-relation 3296. Up to 1024 conditions per place. [2023-09-01 10:56:27,471 INFO L119 LiptonReduction]: Number of co-enabled transitions 51360 [2023-09-01 10:56:31,009 INFO L134 LiptonReduction]: Checked pairs total: 101923 [2023-09-01 10:56:31,009 INFO L136 LiptonReduction]: Total number of compositions: 245 [2023-09-01 10:56:31,011 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:31,011 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;@53df414f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:31,012 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:31,046 INFO L130 PetriNetUnfolder]: 134/453 cut-off events. [2023-09-01 10:56:31,047 INFO L131 PetriNetUnfolder]: For 202/202 co-relation queries the response was YES. [2023-09-01 10:56:31,047 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:31,047 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:31,047 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:31,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:31,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1357732211, now seen corresponding path program 1 times [2023-09-01 10:56:31,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:31,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089024094] [2023-09-01 10:56:31,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:31,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:31,070 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:31,088 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:31,088 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:31,088 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:31,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-09-01 10:56:31,089 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:31,089 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:31,089 WARN L233 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:31,090 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2023-09-01 10:56:31,115 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-09-01 10:56:31,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 313 transitions, 770 flow [2023-09-01 10:56:32,620 INFO L130 PetriNetUnfolder]: 2441/9836 cut-off events. [2023-09-01 10:56:32,620 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:56:32,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12213 conditions, 9836 events. 2441/9836 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 89049 event pairs, 1291 based on Foata normal form. 0/8666 useless extension candidates. Maximal degree in co-relation 6208. Up to 2304 conditions per place. [2023-09-01 10:56:32,715 INFO L82 GeneralOperation]: Start removeDead. Operand has 285 places, 313 transitions, 770 flow [2023-09-01 10:56:32,778 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 285 places, 313 transitions, 770 flow [2023-09-01 10:56:32,778 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:32,779 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 285 places, 313 transitions, 770 flow [2023-09-01 10:56:32,779 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 285 places, 313 transitions, 770 flow [2023-09-01 10:56:32,779 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 285 places, 313 transitions, 770 flow [2023-09-01 10:56:34,216 INFO L130 PetriNetUnfolder]: 2441/9836 cut-off events. [2023-09-01 10:56:34,217 INFO L131 PetriNetUnfolder]: For 2460/2460 co-relation queries the response was YES. [2023-09-01 10:56:34,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12213 conditions, 9836 events. 2441/9836 cut-off events. For 2460/2460 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 89049 event pairs, 1291 based on Foata normal form. 0/8666 useless extension candidates. Maximal degree in co-relation 6208. Up to 2304 conditions per place. [2023-09-01 10:56:34,664 INFO L119 LiptonReduction]: Number of co-enabled transitions 61920 [2023-09-01 10:56:38,203 INFO L134 LiptonReduction]: Checked pairs total: 123214 [2023-09-01 10:56:38,203 INFO L136 LiptonReduction]: Total number of compositions: 268 [2023-09-01 10:56:38,204 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:38,205 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;@53df414f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:38,205 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:38,241 INFO L130 PetriNetUnfolder]: 179/601 cut-off events. [2023-09-01 10:56:38,241 INFO L131 PetriNetUnfolder]: For 309/309 co-relation queries the response was YES. [2023-09-01 10:56:38,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:38,241 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:38,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:38,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:38,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1062179894, now seen corresponding path program 1 times [2023-09-01 10:56:38,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:38,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771230118] [2023-09-01 10:56:38,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:38,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:38,269 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:38,298 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:38,298 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:38,299 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:38,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-09-01 10:56:38,299 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:38,303 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:38,303 WARN L233 ceAbstractionStarter]: 9 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:38,303 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 10 thread instances. [2023-09-01 10:56:38,327 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-09-01 10:56:38,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 335 transitions, 840 flow [2023-09-01 10:56:41,687 INFO L130 PetriNetUnfolder]: 5271/19395 cut-off events. [2023-09-01 10:56:41,688 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:56:41,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24601 conditions, 19395 events. 5271/19395 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 198630 event pairs, 3084 based on Foata normal form. 0/17186 useless extension candidates. Maximal degree in co-relation 12193. Up to 5120 conditions per place. [2023-09-01 10:56:41,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 305 places, 335 transitions, 840 flow [2023-09-01 10:56:42,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 305 places, 335 transitions, 840 flow [2023-09-01 10:56:42,086 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:42,086 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 305 places, 335 transitions, 840 flow [2023-09-01 10:56:42,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 305 places, 335 transitions, 840 flow [2023-09-01 10:56:42,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 305 places, 335 transitions, 840 flow [2023-09-01 10:56:45,061 INFO L130 PetriNetUnfolder]: 5271/19395 cut-off events. [2023-09-01 10:56:45,061 INFO L131 PetriNetUnfolder]: For 5330/5330 co-relation queries the response was YES. [2023-09-01 10:56:45,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24601 conditions, 19395 events. 5271/19395 cut-off events. For 5330/5330 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 198630 event pairs, 3084 based on Foata normal form. 0/17186 useless extension candidates. Maximal degree in co-relation 12193. Up to 5120 conditions per place. [2023-09-01 10:56:45,901 INFO L119 LiptonReduction]: Number of co-enabled transitions 73400 [2023-09-01 10:56:49,862 INFO L134 LiptonReduction]: Checked pairs total: 167530 [2023-09-01 10:56:49,862 INFO L136 LiptonReduction]: Total number of compositions: 284 [2023-09-01 10:56:49,863 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:56:49,864 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;@53df414f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:56:49,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:56:49,918 INFO L130 PetriNetUnfolder]: 256/830 cut-off events. [2023-09-01 10:56:49,919 INFO L131 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2023-09-01 10:56:49,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:56:49,919 INFO L208 CegarLoopForPetriNet]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:56:49,919 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:56:49,919 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:56:49,920 INFO L85 PathProgramCache]: Analyzing trace with hash -97483463, now seen corresponding path program 1 times [2023-09-01 10:56:49,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:56:49,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942099177] [2023-09-01 10:56:49,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:56:49,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:56:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:49,939 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:56:49,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:56:49,958 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:56:49,959 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:56:49,959 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:56:49,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-09-01 10:56:49,959 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:56:49,960 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:56:49,960 WARN L233 ceAbstractionStarter]: 10 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:56:49,960 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 11 thread instances. [2023-09-01 10:56:49,986 INFO L144 ThreadInstanceAdder]: Constructed 11 joinOtherThreadTransitions. [2023-09-01 10:56:49,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 357 transitions, 912 flow [2023-09-01 10:56:56,890 INFO L130 PetriNetUnfolder]: 11429/38938 cut-off events. [2023-09-01 10:56:56,890 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:56:57,421 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50302 conditions, 38938 events. 11429/38938 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 443362 event pairs, 7181 based on Foata normal form. 0/34666 useless extension candidates. Maximal degree in co-relation 24579. Up to 11264 conditions per place. [2023-09-01 10:56:57,421 INFO L82 GeneralOperation]: Start removeDead. Operand has 325 places, 357 transitions, 912 flow [2023-09-01 10:56:57,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 325 places, 357 transitions, 912 flow [2023-09-01 10:56:57,748 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:56:57,748 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 325 places, 357 transitions, 912 flow [2023-09-01 10:56:57,748 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 325 places, 357 transitions, 912 flow [2023-09-01 10:56:57,748 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 325 places, 357 transitions, 912 flow [2023-09-01 10:57:04,519 INFO L130 PetriNetUnfolder]: 11429/38938 cut-off events. [2023-09-01 10:57:04,519 INFO L131 PetriNetUnfolder]: For 11539/11539 co-relation queries the response was YES. [2023-09-01 10:57:05,375 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50302 conditions, 38938 events. 11429/38938 cut-off events. For 11539/11539 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 443362 event pairs, 7181 based on Foata normal form. 0/34666 useless extension candidates. Maximal degree in co-relation 24579. Up to 11264 conditions per place. [2023-09-01 10:57:06,503 INFO L119 LiptonReduction]: Number of co-enabled transitions 85800 [2023-09-01 10:57:10,425 INFO L134 LiptonReduction]: Checked pairs total: 176415 [2023-09-01 10:57:10,425 INFO L136 LiptonReduction]: Total number of compositions: 302 [2023-09-01 10:57:10,426 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:10,426 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;@53df414f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:10,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:10,492 INFO L130 PetriNetUnfolder]: 378/1168 cut-off events. [2023-09-01 10:57:10,493 INFO L131 PetriNetUnfolder]: For 713/713 co-relation queries the response was YES. [2023-09-01 10:57:10,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:10,493 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-09-01 10:57:10,493 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:10,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:10,494 INFO L85 PathProgramCache]: Analyzing trace with hash 865679517, now seen corresponding path program 1 times [2023-09-01 10:57:10,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:10,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76131665] [2023-09-01 10:57:10,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:10,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:10,515 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:10,533 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:10,533 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:10,533 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:10,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-09-01 10:57:10,533 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:10,534 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:10,534 WARN L233 ceAbstractionStarter]: 11 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:10,534 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 12 thread instances. [2023-09-01 10:57:10,560 INFO L144 ThreadInstanceAdder]: Constructed 12 joinOtherThreadTransitions. [2023-09-01 10:57:10,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 379 transitions, 986 flow [2023-09-01 10:57:25,786 INFO L130 PetriNetUnfolder]: 24755/78961 cut-off events. [2023-09-01 10:57:25,786 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:57:28,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103652 conditions, 78961 events. 24755/78961 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1405. Compared 977733 event pairs, 16398 based on Foata normal form. 0/70578 useless extension candidates. Maximal degree in co-relation 50278. Up to 24576 conditions per place. [2023-09-01 10:57:28,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 379 transitions, 986 flow [2023-09-01 10:57:29,195 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 379 transitions, 986 flow [2023-09-01 10:57:29,195 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:57:29,195 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 379 transitions, 986 flow [2023-09-01 10:57:29,196 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 379 transitions, 986 flow [2023-09-01 10:57:29,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 379 transitions, 986 flow [2023-09-01 10:57:44,199 INFO L130 PetriNetUnfolder]: 24755/78961 cut-off events. [2023-09-01 10:57:44,199 INFO L131 PetriNetUnfolder]: For 24928/24928 co-relation queries the response was YES. [2023-09-01 10:57:46,481 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103652 conditions, 78961 events. 24755/78961 cut-off events. For 24928/24928 co-relation queries the response was YES. Maximal size of possible extension queue 1405. Compared 977733 event pairs, 16398 based on Foata normal form. 0/70578 useless extension candidates. Maximal degree in co-relation 50278. Up to 24576 conditions per place. [2023-09-01 10:57:49,617 INFO L119 LiptonReduction]: Number of co-enabled transitions 99120 [2023-09-01 10:57:53,493 INFO L134 LiptonReduction]: Checked pairs total: 207785 [2023-09-01 10:57:53,494 INFO L136 LiptonReduction]: Total number of compositions: 322 [2023-09-01 10:57:53,495 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:57:53,496 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;@53df414f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:57:53,496 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:57:53,601 INFO L130 PetriNetUnfolder]: 597/1721 cut-off events. [2023-09-01 10:57:53,601 INFO L131 PetriNetUnfolder]: For 1089/1089 co-relation queries the response was YES. [2023-09-01 10:57:53,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:57:53,601 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 10:57:53,601 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:57:53,602 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:57:53,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1704822281, now seen corresponding path program 1 times [2023-09-01 10:57:53,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:57:53,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927584453] [2023-09-01 10:57:53,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:57:53,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:57:53,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:53,621 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:57:53,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:57:53,640 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:57:53,640 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:57:53,640 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:57:53,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-09-01 10:57:53,640 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:57:53,641 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:57:53,641 WARN L233 ceAbstractionStarter]: 12 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:57:53,641 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 13 thread instances. [2023-09-01 10:57:53,668 INFO L144 ThreadInstanceAdder]: Constructed 13 joinOtherThreadTransitions. [2023-09-01 10:57:53,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 401 transitions, 1062 flow [2023-09-01 10:58:28,550 INFO L130 PetriNetUnfolder]: 53441/160968 cut-off events. [2023-09-01 10:58:28,551 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:58:34,713 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214347 conditions, 160968 events. 53441/160968 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2787. Compared 2177826 event pairs, 36879 based on Foata normal form. 0/144378 useless extension candidates. Maximal degree in co-relation 103626. Up to 53248 conditions per place. [2023-09-01 10:58:34,713 INFO L82 GeneralOperation]: Start removeDead. Operand has 365 places, 401 transitions, 1062 flow [2023-09-01 10:58:36,937 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 365 places, 401 transitions, 1062 flow [2023-09-01 10:58:36,937 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 10:58:36,938 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 365 places, 401 transitions, 1062 flow [2023-09-01 10:58:36,938 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 365 places, 401 transitions, 1062 flow [2023-09-01 10:58:36,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 365 places, 401 transitions, 1062 flow [2023-09-01 10:59:12,448 INFO L130 PetriNetUnfolder]: 53441/160968 cut-off events. [2023-09-01 10:59:12,449 INFO L131 PetriNetUnfolder]: For 53690/53690 co-relation queries the response was YES. [2023-09-01 10:59:19,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214347 conditions, 160968 events. 53441/160968 cut-off events. For 53690/53690 co-relation queries the response was YES. Maximal size of possible extension queue 2787. Compared 2177826 event pairs, 36879 based on Foata normal form. 0/144378 useless extension candidates. Maximal degree in co-relation 103626. Up to 53248 conditions per place. [2023-09-01 10:59:30,856 INFO L119 LiptonReduction]: Number of co-enabled transitions 113360 [2023-09-01 10:59:34,898 INFO L134 LiptonReduction]: Checked pairs total: 241381 [2023-09-01 10:59:34,899 INFO L136 LiptonReduction]: Total number of compositions: 337 [2023-09-01 10:59:34,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-09-01 10:59:34,900 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;@53df414f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 10:59:34,901 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-09-01 10:59:35,067 INFO L130 PetriNetUnfolder]: 952/2567 cut-off events. [2023-09-01 10:59:35,067 INFO L131 PetriNetUnfolder]: For 1672/1672 co-relation queries the response was YES. [2023-09-01 10:59:35,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 10:59:35,067 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 10:59:35,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-09-01 10:59:35,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 10:59:35,068 INFO L85 PathProgramCache]: Analyzing trace with hash 363102414, now seen corresponding path program 1 times [2023-09-01 10:59:35,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 10:59:35,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597559716] [2023-09-01 10:59:35,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 10:59:35,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 10:59:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:35,090 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-09-01 10:59:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-09-01 10:59:35,111 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-09-01 10:59:35,111 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-09-01 10:59:35,111 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-09-01 10:59:35,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-09-01 10:59:35,112 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-09-01 10:59:35,112 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-09-01 10:59:35,112 WARN L233 ceAbstractionStarter]: 13 thread instances were not sufficient, I will increase this number and restart the analysis [2023-09-01 10:59:35,112 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 14 thread instances. [2023-09-01 10:59:35,146 INFO L144 ThreadInstanceAdder]: Constructed 14 joinOtherThreadTransitions. [2023-09-01 10:59:35,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 385 places, 423 transitions, 1140 flow [2023-09-01 11:01:03,482 INFO L130 PetriNetUnfolder]: 114895/328991 cut-off events. [2023-09-01 11:01:03,483 INFO L131 PetriNetUnfolder]: For 115234/115234 co-relation queries the response was YES. [2023-09-01 11:01:18,868 INFO L83 FinitePrefix]: Finished finitePrefix Result has 443827 conditions, 328991 events. 114895/328991 cut-off events. For 115234/115234 co-relation queries the response was YES. Maximal size of possible extension queue 5269. Compared 4761096 event pairs, 81936 based on Foata normal form. 0/296002 useless extension candidates. Maximal degree in co-relation 214319. Up to 114688 conditions per place. [2023-09-01 11:01:18,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 385 places, 423 transitions, 1140 flow