./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c 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 /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:49:44,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:49:44,357 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:49:44,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:49:44,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:49:44,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:49:44,381 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:49:44,382 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:49:44,385 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:49:44,386 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:49:44,386 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:49:44,388 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:49:44,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:49:44,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:49:44,391 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:49:44,392 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:49:44,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:49:44,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:49:44,397 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:49:44,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:49:44,401 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:49:44,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:49:44,402 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:49:44,403 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:49:44,404 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:49:44,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:49:44,408 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:49:44,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:49:44,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:49:44,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:49:44,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:49:44,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:49:44,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:49:44,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:49:44,412 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:49:44,413 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:49:44,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:49:44,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:49:44,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:49:44,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:49:44,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:49:44,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:49:44,416 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:49:44,435 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:49:44,437 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:49:44,437 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:49:44,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:49:44,438 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:49:44,438 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:49:44,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:49:44,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:49:44,439 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:49:44,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:49:44,440 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:49:44,440 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:49:44,440 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:49:44,440 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:49:44,440 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:49:44,440 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:49:44,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:49:44,441 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:49:44,441 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:49:44,442 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:49:44,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:49:44,442 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:49:44,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:49:44,442 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:49:44,442 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:49:44,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:49:44,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:49:44,443 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:49:44,443 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:49:44,443 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:49:44,443 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:49:44,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:49:44,444 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:49:44,444 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:49:44,444 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:49:44,444 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1eea0d699fc30cae440905f5eeea19b8e9e5d0b5cc249e9ffded8d356549b279 [2022-04-18 15:49:44,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:49:44,658 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:49:44,660 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:49:44,661 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:49:44,661 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:49:44,662 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2022-04-18 15:49:44,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0019b3692/1ac4590c8c07445ca07822f0b9e88f47/FLAGd5f052019 [2022-04-18 15:49:45,146 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:49:45,146 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_24-sound_lock_racing.i [2022-04-18 15:49:45,154 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0019b3692/1ac4590c8c07445ca07822f0b9e88f47/FLAGd5f052019 [2022-04-18 15:49:45,162 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0019b3692/1ac4590c8c07445ca07822f0b9e88f47 [2022-04-18 15:49:45,164 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:49:45,165 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:49:45,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:49:45,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:49:45,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:49:45,179 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:49:45" (1/1) ... [2022-04-18 15:49:45,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@606a26a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:45, skipping insertion in model container [2022-04-18 15:49:45,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:49:45" (1/1) ... [2022-04-18 15:49:45,185 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:49:45,211 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:49:45,455 WARN L230 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_24-sound_lock_racing.i[30176,30189] [2022-04-18 15:49:45,474 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:49:45,485 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:49:45,507 WARN L230 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_24-sound_lock_racing.i[30176,30189] [2022-04-18 15:49:45,515 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:49:45,535 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:49:45,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:45 WrapperNode [2022-04-18 15:49:45,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:49:45,537 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:49:45,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:49:45,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:49:45,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:45" (1/1) ... [2022-04-18 15:49:45,553 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:45" (1/1) ... [2022-04-18 15:49:45,569 INFO L137 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 92 [2022-04-18 15:49:45,569 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:49:45,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:49:45,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:49:45,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:49:45,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:45" (1/1) ... [2022-04-18 15:49:45,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:45" (1/1) ... [2022-04-18 15:49:45,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:45" (1/1) ... [2022-04-18 15:49:45,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:45" (1/1) ... [2022-04-18 15:49:45,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:45" (1/1) ... [2022-04-18 15:49:45,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:45" (1/1) ... [2022-04-18 15:49:45,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:45" (1/1) ... [2022-04-18 15:49:45,587 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:49:45,588 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:49:45,588 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:49:45,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:49:45,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:45" (1/1) ... [2022-04-18 15:49:45,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:49:45,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:49:45,623 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) [2022-04-18 15:49:45,624 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 [2022-04-18 15:49:45,648 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 15:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-04-18 15:49:45,649 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-04-18 15:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:49:45,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:49:45,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:49:45,650 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 15:49:45,723 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:49:45,724 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:49:45,909 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:49:45,914 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:49:45,914 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-04-18 15:49:45,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:49:45 BoogieIcfgContainer [2022-04-18 15:49:45,916 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:49:45,917 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:49:45,917 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:49:45,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:49:45,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:49:45" (1/3) ... [2022-04-18 15:49:45,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7970f44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:49:45, skipping insertion in model container [2022-04-18 15:49:45,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:49:45" (2/3) ... [2022-04-18 15:49:45,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7970f44b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:49:45, skipping insertion in model container [2022-04-18 15:49:45,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:49:45" (3/3) ... [2022-04-18 15:49:45,921 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_24-sound_lock_racing.i [2022-04-18 15:49:45,924 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:49:45,925 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:49:45,925 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-04-18 15:49:45,925 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:49:45,979 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 15:49:46,018 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:46,025 INFO L340 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 [2022-04-18 15:49:46,025 INFO L341 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2022-04-18 15:49:46,039 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 133 places, 143 transitions, 294 flow [2022-04-18 15:49:46,104 INFO L129 PetriNetUnfolder]: 18/187 cut-off events. [2022-04-18 15:49:46,104 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:49:46,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 187 events. 18/187 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 521 event pairs, 0 based on Foata normal form. 0/158 useless extension candidates. Maximal degree in co-relation 93. Up to 4 conditions per place. [2022-04-18 15:49:46,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 143 transitions, 294 flow [2022-04-18 15:49:46,116 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 143 transitions, 294 flow [2022-04-18 15:49:46,136 INFO L129 PetriNetUnfolder]: 3/62 cut-off events. [2022-04-18 15:49:46,137 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:46,137 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:46,138 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:46,145 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-04-18 15:49:46,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:46,149 INFO L85 PathProgramCache]: Analyzing trace with hash 610520264, now seen corresponding path program 1 times [2022-04-18 15:49:46,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:46,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774651447] [2022-04-18 15:49:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:46,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:46,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:46,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:46,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774651447] [2022-04-18 15:49:46,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774651447] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:46,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:46,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:46,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095648989] [2022-04-18 15:49:46,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:46,356 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:46,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:46,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:46,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:46,382 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 143 [2022-04-18 15:49:46,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 143 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:46,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 143 [2022-04-18 15:49:46,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:46,435 INFO L129 PetriNetUnfolder]: 1/150 cut-off events. [2022-04-18 15:49:46,436 INFO L130 PetriNetUnfolder]: For 3/9 co-relation queries the response was YES. [2022-04-18 15:49:46,437 INFO L84 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 150 events. 1/150 cut-off events. For 3/9 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 150 event pairs, 0 based on Foata normal form. 25/163 useless extension candidates. Maximal degree in co-relation 51. Up to 7 conditions per place. [2022-04-18 15:49:46,438 INFO L132 encePairwiseOnDemand]: 129/143 looper letters, 9 selfloop transitions, 2 changer transitions 0/133 dead transitions. [2022-04-18 15:49:46,438 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 133 transitions, 296 flow [2022-04-18 15:49:46,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:46,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:46,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 396 transitions. [2022-04-18 15:49:46,452 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9230769230769231 [2022-04-18 15:49:46,452 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 396 transitions. [2022-04-18 15:49:46,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 396 transitions. [2022-04-18 15:49:46,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:46,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 396 transitions. [2022-04-18 15:49:46,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,466 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,467 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,468 INFO L186 Difference]: Start difference. First operand has 133 places, 143 transitions, 294 flow. Second operand 3 states and 396 transitions. [2022-04-18 15:49:46,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 133 transitions, 296 flow [2022-04-18 15:49:46,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 133 transitions, 296 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:46,474 INFO L242 Difference]: Finished difference. Result has 135 places, 131 transitions, 278 flow [2022-04-18 15:49:46,475 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=135, PETRI_TRANSITIONS=131} [2022-04-18 15:49:46,479 INFO L335 CegarLoopForPetriNet]: 133 programPoint places, 2 predicate places. [2022-04-18 15:49:46,479 INFO L478 AbstractCegarLoop]: Abstraction has has 135 places, 131 transitions, 278 flow [2022-04-18 15:49:46,480 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,480 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:46,481 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:46,482 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:49:46,482 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-04-18 15:49:46,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:46,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1534183484, now seen corresponding path program 1 times [2022-04-18 15:49:46,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:46,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305817853] [2022-04-18 15:49:46,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:46,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:46,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:46,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:46,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305817853] [2022-04-18 15:49:46,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305817853] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:46,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:46,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:46,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404286306] [2022-04-18 15:49:46,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:46,571 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:46,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:46,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:46,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:46,575 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 143 [2022-04-18 15:49:46,575 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 131 transitions, 278 flow. Second operand has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,575 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:46,575 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 143 [2022-04-18 15:49:46,575 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:46,682 INFO L129 PetriNetUnfolder]: 30/518 cut-off events. [2022-04-18 15:49:46,682 INFO L130 PetriNetUnfolder]: For 12/16 co-relation queries the response was YES. [2022-04-18 15:49:46,685 INFO L84 FinitePrefix]: Finished finitePrefix Result has 616 conditions, 518 events. 30/518 cut-off events. For 12/16 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 2551 event pairs, 11 based on Foata normal form. 1/463 useless extension candidates. Maximal degree in co-relation 553. Up to 53 conditions per place. [2022-04-18 15:49:46,686 INFO L132 encePairwiseOnDemand]: 134/143 looper letters, 18 selfloop transitions, 6 changer transitions 0/138 dead transitions. [2022-04-18 15:49:46,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 138 transitions, 343 flow [2022-04-18 15:49:46,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:46,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:46,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2022-04-18 15:49:46,689 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8601398601398601 [2022-04-18 15:49:46,689 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2022-04-18 15:49:46,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2022-04-18 15:49:46,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:46,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2022-04-18 15:49:46,691 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,694 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 143.0) internal successors, (572), 4 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,694 INFO L186 Difference]: Start difference. First operand has 135 places, 131 transitions, 278 flow. Second operand 3 states and 369 transitions. [2022-04-18 15:49:46,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 138 transitions, 343 flow [2022-04-18 15:49:46,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 138 transitions, 339 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:49:46,701 INFO L242 Difference]: Finished difference. Result has 135 places, 133 transitions, 312 flow [2022-04-18 15:49:46,701 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=143, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=312, PETRI_PLACES=135, PETRI_TRANSITIONS=133} [2022-04-18 15:49:46,702 INFO L335 CegarLoopForPetriNet]: 133 programPoint places, 2 predicate places. [2022-04-18 15:49:46,702 INFO L478 AbstractCegarLoop]: Abstraction has has 135 places, 133 transitions, 312 flow [2022-04-18 15:49:46,702 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,702 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:46,703 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:46,703 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:49:46,703 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 8 more)] === [2022-04-18 15:49:46,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:46,704 INFO L85 PathProgramCache]: Analyzing trace with hash -242621296, now seen corresponding path program 1 times [2022-04-18 15:49:46,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:46,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234140511] [2022-04-18 15:49:46,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:46,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:46,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:46,760 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:49:46,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:46,800 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:49:46,802 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:49:46,802 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 11 remaining) [2022-04-18 15:49:46,804 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 11 remaining) [2022-04-18 15:49:46,804 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (8 of 11 remaining) [2022-04-18 15:49:46,805 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 11 remaining) [2022-04-18 15:49:46,805 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 11 remaining) [2022-04-18 15:49:46,805 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 11 remaining) [2022-04-18 15:49:46,805 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 11 remaining) [2022-04-18 15:49:46,805 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 11 remaining) [2022-04-18 15:49:46,806 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 11 remaining) [2022-04-18 15:49:46,806 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 11 remaining) [2022-04-18 15:49:46,806 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 11 remaining) [2022-04-18 15:49:46,806 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:49:46,809 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-04-18 15:49:46,810 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:49:46,810 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 15:49:46,843 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 15:49:46,846 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:46,848 INFO L340 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 [2022-04-18 15:49:46,849 INFO L341 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2022-04-18 15:49:46,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 174 places, 189 transitions, 396 flow [2022-04-18 15:49:46,888 INFO L129 PetriNetUnfolder]: 32/308 cut-off events. [2022-04-18 15:49:46,888 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-04-18 15:49:46,890 INFO L84 FinitePrefix]: Finished finitePrefix Result has 322 conditions, 308 events. 32/308 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1048 event pairs, 0 based on Foata normal form. 0/257 useless extension candidates. Maximal degree in co-relation 189. Up to 8 conditions per place. [2022-04-18 15:49:46,890 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 189 transitions, 396 flow [2022-04-18 15:49:46,892 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 174 places, 189 transitions, 396 flow [2022-04-18 15:49:46,898 INFO L129 PetriNetUnfolder]: 3/64 cut-off events. [2022-04-18 15:49:46,898 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:46,898 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:46,898 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:46,898 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 15:49:46,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:46,899 INFO L85 PathProgramCache]: Analyzing trace with hash -325867385, now seen corresponding path program 1 times [2022-04-18 15:49:46,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:46,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932017249] [2022-04-18 15:49:46,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:46,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:46,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:46,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:46,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932017249] [2022-04-18 15:49:46,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932017249] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:46,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:46,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:46,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935490239] [2022-04-18 15:49:46,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:46,949 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:49:46,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:46,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:49:46,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:49:46,950 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 189 [2022-04-18 15:49:46,951 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 189 transitions, 396 flow. Second operand has 2 states, 2 states have (on average 167.5) internal successors, (335), 2 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:46,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 189 [2022-04-18 15:49:46,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:46,980 INFO L129 PetriNetUnfolder]: 4/277 cut-off events. [2022-04-18 15:49:46,980 INFO L130 PetriNetUnfolder]: For 20/26 co-relation queries the response was YES. [2022-04-18 15:49:46,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 298 conditions, 277 events. 4/277 cut-off events. For 20/26 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 763 event pairs, 0 based on Foata normal form. 42/293 useless extension candidates. Maximal degree in co-relation 173. Up to 7 conditions per place. [2022-04-18 15:49:46,981 INFO L132 encePairwiseOnDemand]: 172/189 looper letters, 4 selfloop transitions, 0 changer transitions 0/171 dead transitions. [2022-04-18 15:49:46,982 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 171 transitions, 368 flow [2022-04-18 15:49:46,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:49:46,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:49:46,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 355 transitions. [2022-04-18 15:49:46,983 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9391534391534392 [2022-04-18 15:49:46,984 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 355 transitions. [2022-04-18 15:49:46,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 355 transitions. [2022-04-18 15:49:46,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:46,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 355 transitions. [2022-04-18 15:49:46,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 177.5) internal successors, (355), 2 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,986 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,986 INFO L186 Difference]: Start difference. First operand has 174 places, 189 transitions, 396 flow. Second operand 2 states and 355 transitions. [2022-04-18 15:49:46,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 171 transitions, 368 flow [2022-04-18 15:49:46,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 171 transitions, 368 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:46,990 INFO L242 Difference]: Finished difference. Result has 174 places, 171 transitions, 360 flow [2022-04-18 15:49:46,991 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=360, PETRI_PLACES=174, PETRI_TRANSITIONS=171} [2022-04-18 15:49:46,993 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, 0 predicate places. [2022-04-18 15:49:46,993 INFO L478 AbstractCegarLoop]: Abstraction has has 174 places, 171 transitions, 360 flow [2022-04-18 15:49:46,993 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 167.5) internal successors, (335), 2 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:46,993 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:46,994 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:46,996 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:49:46,997 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 15:49:46,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:46,997 INFO L85 PathProgramCache]: Analyzing trace with hash 561636296, now seen corresponding path program 1 times [2022-04-18 15:49:46,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:46,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002023779] [2022-04-18 15:49:46,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:46,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:47,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:47,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:47,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:47,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002023779] [2022-04-18 15:49:47,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002023779] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:47,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:47,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:47,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054126921] [2022-04-18 15:49:47,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:47,054 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:47,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:47,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:47,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:47,055 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 189 [2022-04-18 15:49:47,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 171 transitions, 360 flow. Second operand has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:47,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:47,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 189 [2022-04-18 15:49:47,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:47,098 INFO L129 PetriNetUnfolder]: 3/258 cut-off events. [2022-04-18 15:49:47,099 INFO L130 PetriNetUnfolder]: For 26/67 co-relation queries the response was YES. [2022-04-18 15:49:47,099 INFO L84 FinitePrefix]: Finished finitePrefix Result has 294 conditions, 258 events. 3/258 cut-off events. For 26/67 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 634 event pairs, 0 based on Foata normal form. 1/236 useless extension candidates. Maximal degree in co-relation 289. Up to 16 conditions per place. [2022-04-18 15:49:47,100 INFO L132 encePairwiseOnDemand]: 186/189 looper letters, 13 selfloop transitions, 2 changer transitions 0/175 dead transitions. [2022-04-18 15:49:47,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 175 transitions, 398 flow [2022-04-18 15:49:47,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:47,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:47,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 496 transitions. [2022-04-18 15:49:47,102 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8747795414462081 [2022-04-18 15:49:47,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 496 transitions. [2022-04-18 15:49:47,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 496 transitions. [2022-04-18 15:49:47,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:47,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 496 transitions. [2022-04-18 15:49:47,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.33333333333334) internal successors, (496), 3 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:47,104 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:47,105 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:47,105 INFO L186 Difference]: Start difference. First operand has 174 places, 171 transitions, 360 flow. Second operand 3 states and 496 transitions. [2022-04-18 15:49:47,105 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 175 transitions, 398 flow [2022-04-18 15:49:47,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 398 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:47,108 INFO L242 Difference]: Finished difference. Result has 177 places, 172 transitions, 372 flow [2022-04-18 15:49:47,108 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=372, PETRI_PLACES=177, PETRI_TRANSITIONS=172} [2022-04-18 15:49:47,109 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, 3 predicate places. [2022-04-18 15:49:47,109 INFO L478 AbstractCegarLoop]: Abstraction has has 177 places, 172 transitions, 372 flow [2022-04-18 15:49:47,110 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:47,110 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:47,110 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:47,110 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:49:47,110 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 15:49:47,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:47,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1904095696, now seen corresponding path program 1 times [2022-04-18 15:49:47,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:47,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454995795] [2022-04-18 15:49:47,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:47,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:47,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:47,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:47,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:47,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454995795] [2022-04-18 15:49:47,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454995795] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:47,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:47,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:47,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828097599] [2022-04-18 15:49:47,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:47,167 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:47,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:47,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:47,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:47,170 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 189 [2022-04-18 15:49:47,170 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 172 transitions, 372 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:47,170 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:47,170 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 189 [2022-04-18 15:49:47,170 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:47,850 INFO L129 PetriNetUnfolder]: 1376/7703 cut-off events. [2022-04-18 15:49:47,851 INFO L130 PetriNetUnfolder]: For 254/415 co-relation queries the response was YES. [2022-04-18 15:49:47,893 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10224 conditions, 7703 events. 1376/7703 cut-off events. For 254/415 co-relation queries the response was YES. Maximal size of possible extension queue 229. Compared 83986 event pairs, 514 based on Foata normal form. 9/6625 useless extension candidates. Maximal degree in co-relation 10217. Up to 1414 conditions per place. [2022-04-18 15:49:47,916 INFO L132 encePairwiseOnDemand]: 170/189 looper letters, 42 selfloop transitions, 14 changer transitions 0/197 dead transitions. [2022-04-18 15:49:47,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 197 transitions, 545 flow [2022-04-18 15:49:47,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:47,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:47,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 481 transitions. [2022-04-18 15:49:47,918 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8483245149911817 [2022-04-18 15:49:47,918 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 481 transitions. [2022-04-18 15:49:47,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 481 transitions. [2022-04-18 15:49:47,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:47,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 481 transitions. [2022-04-18 15:49:47,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.33333333333334) internal successors, (481), 3 states have internal predecessors, (481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:47,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:47,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:47,921 INFO L186 Difference]: Start difference. First operand has 177 places, 172 transitions, 372 flow. Second operand 3 states and 481 transitions. [2022-04-18 15:49:47,921 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 197 transitions, 545 flow [2022-04-18 15:49:47,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 197 transitions, 543 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:49:47,925 INFO L242 Difference]: Finished difference. Result has 180 places, 186 transitions, 492 flow [2022-04-18 15:49:47,925 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=492, PETRI_PLACES=180, PETRI_TRANSITIONS=186} [2022-04-18 15:49:47,926 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, 6 predicate places. [2022-04-18 15:49:47,926 INFO L478 AbstractCegarLoop]: Abstraction has has 180 places, 186 transitions, 492 flow [2022-04-18 15:49:47,926 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:47,926 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:47,926 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:47,927 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:49:47,927 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 15:49:47,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:47,927 INFO L85 PathProgramCache]: Analyzing trace with hash -290053638, now seen corresponding path program 1 times [2022-04-18 15:49:47,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:47,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056541124] [2022-04-18 15:49:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:47,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:47,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:47,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:47,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:47,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056541124] [2022-04-18 15:49:47,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056541124] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:47,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:47,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:47,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435624842] [2022-04-18 15:49:47,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:47,960 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:47,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:47,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:47,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:47,961 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 189 [2022-04-18 15:49:47,962 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 186 transitions, 492 flow. Second operand has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:47,963 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:47,963 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 189 [2022-04-18 15:49:47,964 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:48,817 INFO L129 PetriNetUnfolder]: 1714/8190 cut-off events. [2022-04-18 15:49:48,817 INFO L130 PetriNetUnfolder]: For 2683/3115 co-relation queries the response was YES. [2022-04-18 15:49:48,838 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13949 conditions, 8190 events. 1714/8190 cut-off events. For 2683/3115 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 87663 event pairs, 781 based on Foata normal form. 17/7386 useless extension candidates. Maximal degree in co-relation 13941. Up to 2616 conditions per place. [2022-04-18 15:49:48,874 INFO L132 encePairwiseOnDemand]: 180/189 looper letters, 60 selfloop transitions, 14 changer transitions 0/213 dead transitions. [2022-04-18 15:49:48,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 213 transitions, 756 flow [2022-04-18 15:49:48,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:48,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:48,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2022-04-18 15:49:48,877 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8236331569664903 [2022-04-18 15:49:48,877 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2022-04-18 15:49:48,877 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2022-04-18 15:49:48,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:48,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2022-04-18 15:49:48,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:48,880 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:48,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 189.0) internal successors, (756), 4 states have internal predecessors, (756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:48,880 INFO L186 Difference]: Start difference. First operand has 180 places, 186 transitions, 492 flow. Second operand 3 states and 467 transitions. [2022-04-18 15:49:48,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 213 transitions, 756 flow [2022-04-18 15:49:48,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 213 transitions, 712 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:49:48,890 INFO L242 Difference]: Finished difference. Result has 182 places, 198 transitions, 590 flow [2022-04-18 15:49:48,890 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=189, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=590, PETRI_PLACES=182, PETRI_TRANSITIONS=198} [2022-04-18 15:49:48,891 INFO L335 CegarLoopForPetriNet]: 174 programPoint places, 8 predicate places. [2022-04-18 15:49:48,891 INFO L478 AbstractCegarLoop]: Abstraction has has 182 places, 198 transitions, 590 flow [2022-04-18 15:49:48,892 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:48,892 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:48,892 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:48,892 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:49:48,892 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 12 more)] === [2022-04-18 15:49:48,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:48,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2101425172, now seen corresponding path program 1 times [2022-04-18 15:49:48,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:48,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145649484] [2022-04-18 15:49:48,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:48,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:48,915 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 15:49:48,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 15:49:48,942 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-18 15:49:48,942 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 15:49:48,942 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2022-04-18 15:49:48,943 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2022-04-18 15:49:48,943 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2022-04-18 15:49:48,943 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2022-04-18 15:49:48,943 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2022-04-18 15:49:48,943 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2022-04-18 15:49:48,943 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2022-04-18 15:49:48,944 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2022-04-18 15:49:48,944 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2022-04-18 15:49:48,945 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2022-04-18 15:49:48,945 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2022-04-18 15:49:48,945 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2022-04-18 15:49:48,945 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2022-04-18 15:49:48,945 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2022-04-18 15:49:48,945 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2022-04-18 15:49:48,946 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:49:48,946 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-04-18 15:49:48,946 WARN L232 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 15:49:48,946 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-04-18 15:49:48,977 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 15:49:48,978 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:49:48,979 INFO L340 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 [2022-04-18 15:49:48,979 INFO L341 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2022-04-18 15:49:48,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 215 places, 235 transitions, 500 flow [2022-04-18 15:49:49,015 INFO L129 PetriNetUnfolder]: 51/474 cut-off events. [2022-04-18 15:49:49,016 INFO L130 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2022-04-18 15:49:49,019 INFO L84 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 474 events. 51/474 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1809 event pairs, 1 based on Foata normal form. 0/395 useless extension candidates. Maximal degree in co-relation 316. Up to 16 conditions per place. [2022-04-18 15:49:49,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 235 transitions, 500 flow [2022-04-18 15:49:49,024 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 215 places, 235 transitions, 500 flow [2022-04-18 15:49:49,026 INFO L129 PetriNetUnfolder]: 3/65 cut-off events. [2022-04-18 15:49:49,027 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:49:49,027 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:49,027 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:49,027 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-04-18 15:49:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1045006727, now seen corresponding path program 1 times [2022-04-18 15:49:49,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:49,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094941426] [2022-04-18 15:49:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:49,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:49,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:49,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094941426] [2022-04-18 15:49:49,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094941426] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:49,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:49,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:49,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856309312] [2022-04-18 15:49:49,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:49,051 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 15:49:49,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:49,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 15:49:49,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 15:49:49,052 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 205 out of 235 [2022-04-18 15:49:49,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 235 transitions, 500 flow. Second operand has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:49,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:49,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 205 of 235 [2022-04-18 15:49:49,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:49,112 INFO L129 PetriNetUnfolder]: 9/428 cut-off events. [2022-04-18 15:49:49,112 INFO L130 PetriNetUnfolder]: For 50/59 co-relation queries the response was YES. [2022-04-18 15:49:49,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 472 conditions, 428 events. 9/428 cut-off events. For 50/59 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1491 event pairs, 1 based on Foata normal form. 104/491 useless extension candidates. Maximal degree in co-relation 291. Up to 16 conditions per place. [2022-04-18 15:49:49,116 INFO L132 encePairwiseOnDemand]: 212/235 looper letters, 6 selfloop transitions, 0 changer transitions 0/211 dead transitions. [2022-04-18 15:49:49,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 211 transitions, 464 flow [2022-04-18 15:49:49,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 15:49:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-04-18 15:49:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 439 transitions. [2022-04-18 15:49:49,118 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9340425531914893 [2022-04-18 15:49:49,118 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 439 transitions. [2022-04-18 15:49:49,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 439 transitions. [2022-04-18 15:49:49,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:49,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 439 transitions. [2022-04-18 15:49:49,119 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 219.5) internal successors, (439), 2 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:49,121 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:49,121 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:49,121 INFO L186 Difference]: Start difference. First operand has 215 places, 235 transitions, 500 flow. Second operand 2 states and 439 transitions. [2022-04-18 15:49:49,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 211 transitions, 464 flow [2022-04-18 15:49:49,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 211 transitions, 464 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:49,124 INFO L242 Difference]: Finished difference. Result has 215 places, 211 transitions, 452 flow [2022-04-18 15:49:49,125 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=452, PETRI_PLACES=215, PETRI_TRANSITIONS=211} [2022-04-18 15:49:49,126 INFO L335 CegarLoopForPetriNet]: 215 programPoint places, 0 predicate places. [2022-04-18 15:49:49,126 INFO L478 AbstractCegarLoop]: Abstraction has has 215 places, 211 transitions, 452 flow [2022-04-18 15:49:49,126 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 205.5) internal successors, (411), 2 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:49,126 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:49,126 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:49,126 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:49:49,127 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-04-18 15:49:49,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:49,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1932510408, now seen corresponding path program 1 times [2022-04-18 15:49:49,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:49,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806199530] [2022-04-18 15:49:49,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:49,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:49,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:49,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806199530] [2022-04-18 15:49:49,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806199530] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:49,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:49,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:49:49,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951331574] [2022-04-18 15:49:49,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:49,166 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:49,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:49,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:49,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:49,167 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 235 [2022-04-18 15:49:49,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 211 transitions, 452 flow. Second operand has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:49,168 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:49,168 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 235 [2022-04-18 15:49:49,168 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:49,222 INFO L129 PetriNetUnfolder]: 8/409 cut-off events. [2022-04-18 15:49:49,222 INFO L130 PetriNetUnfolder]: For 43/82 co-relation queries the response was YES. [2022-04-18 15:49:49,224 INFO L84 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 409 events. 8/409 cut-off events. For 43/82 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1371 event pairs, 1 based on Foata normal form. 1/372 useless extension candidates. Maximal degree in co-relation 467. Up to 30 conditions per place. [2022-04-18 15:49:49,225 INFO L132 encePairwiseOnDemand]: 232/235 looper letters, 15 selfloop transitions, 2 changer transitions 0/215 dead transitions. [2022-04-18 15:49:49,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 215 transitions, 494 flow [2022-04-18 15:49:49,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:49:49,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:49:49,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 612 transitions. [2022-04-18 15:49:49,227 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8680851063829788 [2022-04-18 15:49:49,227 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 612 transitions. [2022-04-18 15:49:49,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 612 transitions. [2022-04-18 15:49:49,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:49:49,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 612 transitions. [2022-04-18 15:49:49,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 204.0) internal successors, (612), 3 states have internal predecessors, (612), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:49,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:49,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:49,230 INFO L186 Difference]: Start difference. First operand has 215 places, 211 transitions, 452 flow. Second operand 3 states and 612 transitions. [2022-04-18 15:49:49,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 215 transitions, 494 flow [2022-04-18 15:49:49,231 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 215 transitions, 494 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:49:49,233 INFO L242 Difference]: Finished difference. Result has 218 places, 212 transitions, 464 flow [2022-04-18 15:49:49,234 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=452, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=218, PETRI_TRANSITIONS=212} [2022-04-18 15:49:49,234 INFO L335 CegarLoopForPetriNet]: 215 programPoint places, 3 predicate places. [2022-04-18 15:49:49,234 INFO L478 AbstractCegarLoop]: Abstraction has has 218 places, 212 transitions, 464 flow [2022-04-18 15:49:49,234 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.0) internal successors, (597), 3 states have internal predecessors, (597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:49,235 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:49:49,235 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:49:49,235 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:49:49,235 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-04-18 15:49:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:49:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash -614276324, now seen corresponding path program 1 times [2022-04-18 15:49:49,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:49:49,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913888245] [2022-04-18 15:49:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:49:49,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:49:49,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:49:49,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:49:49,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:49:49,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913888245] [2022-04-18 15:49:49,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913888245] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:49:49,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:49:49,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:49:49,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137284952] [2022-04-18 15:49:49,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:49:49,255 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:49:49,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:49:49,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:49:49,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:49:49,256 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 235 [2022-04-18 15:49:49,257 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 212 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:49:49,257 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:49:49,257 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 235 [2022-04-18 15:49:49,257 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:49:59,742 INFO L129 PetriNetUnfolder]: 35162/121429 cut-off events. [2022-04-18 15:49:59,742 INFO L130 PetriNetUnfolder]: For 5339/8406 co-relation queries the response was YES. [2022-04-18 15:50:00,222 INFO L84 FinitePrefix]: Finished finitePrefix Result has 175044 conditions, 121429 events. 35162/121429 cut-off events. For 5339/8406 co-relation queries the response was YES. Maximal size of possible extension queue 2973. Compared 1820881 event pairs, 14664 based on Foata normal form. 59/102146 useless extension candidates. Maximal degree in co-relation 175036. Up to 29486 conditions per place. [2022-04-18 15:50:00,877 INFO L132 encePairwiseOnDemand]: 208/235 looper letters, 62 selfloop transitions, 20 changer transitions 0/249 dead transitions. [2022-04-18 15:50:00,878 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 249 transitions, 723 flow [2022-04-18 15:50:00,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:00,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:00,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 587 transitions. [2022-04-18 15:50:00,880 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8326241134751773 [2022-04-18 15:50:00,880 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 587 transitions. [2022-04-18 15:50:00,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 587 transitions. [2022-04-18 15:50:00,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:00,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 587 transitions. [2022-04-18 15:50:00,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 195.66666666666666) internal successors, (587), 3 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:00,882 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:00,883 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:00,883 INFO L186 Difference]: Start difference. First operand has 218 places, 212 transitions, 464 flow. Second operand 3 states and 587 transitions. [2022-04-18 15:50:00,883 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 249 transitions, 723 flow [2022-04-18 15:50:00,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 249 transitions, 721 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:50:00,896 INFO L242 Difference]: Finished difference. Result has 221 places, 232 transitions, 636 flow [2022-04-18 15:50:00,896 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=636, PETRI_PLACES=221, PETRI_TRANSITIONS=232} [2022-04-18 15:50:00,898 INFO L335 CegarLoopForPetriNet]: 215 programPoint places, 6 predicate places. [2022-04-18 15:50:00,898 INFO L478 AbstractCegarLoop]: Abstraction has has 221 places, 232 transitions, 636 flow [2022-04-18 15:50:00,898 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 167.0) internal successors, (501), 3 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:00,898 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:00,898 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:00,898 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-04-18 15:50:00,899 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-04-18 15:50:00,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1322794831, now seen corresponding path program 1 times [2022-04-18 15:50:00,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:00,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873053850] [2022-04-18 15:50:00,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:00,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 15:50:00,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:00,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873053850] [2022-04-18 15:50:00,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873053850] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:00,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:00,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:00,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690110628] [2022-04-18 15:50:00,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:00,934 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:00,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:00,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:00,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:00,935 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 235 [2022-04-18 15:50:00,936 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 232 transitions, 636 flow. Second operand has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:00,936 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:00,936 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 235 [2022-04-18 15:50:00,936 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:50:13,370 INFO L129 PetriNetUnfolder]: 44863/140878 cut-off events. [2022-04-18 15:50:13,370 INFO L130 PetriNetUnfolder]: For 60273/68581 co-relation queries the response was YES. [2022-04-18 15:50:14,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 267890 conditions, 140878 events. 44863/140878 cut-off events. For 60273/68581 co-relation queries the response was YES. Maximal size of possible extension queue 3266. Compared 2075085 event pairs, 21238 based on Foata normal form. 228/125518 useless extension candidates. Maximal degree in co-relation 267881. Up to 58507 conditions per place. [2022-04-18 15:50:14,766 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 92 selfloop transitions, 22 changer transitions 0/279 dead transitions. [2022-04-18 15:50:14,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 279 transitions, 1070 flow [2022-04-18 15:50:14,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:50:14,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:50:14,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2022-04-18 15:50:14,780 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.8127659574468085 [2022-04-18 15:50:14,780 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 573 transitions. [2022-04-18 15:50:14,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 573 transitions. [2022-04-18 15:50:14,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:50:14,781 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 573 transitions. [2022-04-18 15:50:14,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.0) internal successors, (573), 3 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:14,783 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:14,783 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:14,783 INFO L186 Difference]: Start difference. First operand has 221 places, 232 transitions, 636 flow. Second operand 3 states and 573 transitions. [2022-04-18 15:50:14,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 279 transitions, 1070 flow [2022-04-18 15:50:14,847 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 279 transitions, 1002 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-04-18 15:50:14,850 INFO L242 Difference]: Finished difference. Result has 223 places, 252 transitions, 802 flow [2022-04-18 15:50:14,850 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=232, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=802, PETRI_PLACES=223, PETRI_TRANSITIONS=252} [2022-04-18 15:50:14,850 INFO L335 CegarLoopForPetriNet]: 215 programPoint places, 8 predicate places. [2022-04-18 15:50:14,851 INFO L478 AbstractCegarLoop]: Abstraction has has 223 places, 252 transitions, 802 flow [2022-04-18 15:50:14,851 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 166.0) internal successors, (498), 3 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:14,851 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:50:14,851 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:50:14,851 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-04-18 15:50:14,852 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 16 more)] === [2022-04-18 15:50:14,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:50:14,852 INFO L85 PathProgramCache]: Analyzing trace with hash -19825975, now seen corresponding path program 1 times [2022-04-18 15:50:14,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:50:14,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185104689] [2022-04-18 15:50:14,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:50:14,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:50:14,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:50:14,870 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-04-18 15:50:14,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:50:14,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185104689] [2022-04-18 15:50:14,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185104689] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:50:14,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:50:14,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 15:50:14,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513359270] [2022-04-18 15:50:14,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:50:14,872 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:50:14,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:50:14,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:50:14,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:50:14,873 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 235 [2022-04-18 15:50:14,873 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 252 transitions, 802 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 15:50:14,873 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:50:14,873 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 235 [2022-04-18 15:50:14,873 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand