./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.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/pthread-divine/ring_1w1r-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 15:54:25,344 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 15:54:25,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 15:54:25,381 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 15:54:25,381 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 15:54:25,382 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 15:54:25,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 15:54:25,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 15:54:25,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 15:54:25,390 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 15:54:25,391 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 15:54:25,393 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 15:54:25,393 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 15:54:25,394 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 15:54:25,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 15:54:25,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 15:54:25,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 15:54:25,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 15:54:25,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 15:54:25,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 15:54:25,406 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 15:54:25,406 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 15:54:25,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 15:54:25,408 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 15:54:25,409 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 15:54:25,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 15:54:25,414 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 15:54:25,414 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 15:54:25,415 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 15:54:25,415 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 15:54:25,416 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 15:54:25,417 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 15:54:25,418 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 15:54:25,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 15:54:25,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 15:54:25,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 15:54:25,419 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 15:54:25,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 15:54:25,420 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 15:54:25,420 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 15:54:25,421 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 15:54:25,422 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 15:54:25,423 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2022-04-18 15:54:25,446 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 15:54:25,446 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 15:54:25,447 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 15:54:25,447 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 15:54:25,447 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 15:54:25,448 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 15:54:25,448 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-18 15:54:25,448 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-18 15:54:25,448 INFO L138 SettingsManager]: * Use SBE=true [2022-04-18 15:54:25,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 15:54:25,449 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 15:54:25,449 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 15:54:25,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 15:54:25,450 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 15:54:25,450 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 15:54:25,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 15:54:25,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 15:54:25,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 15:54:25,450 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 15:54:25,451 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 15:54:25,451 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 15:54:25,451 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 15:54:25,452 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 15:54:25,452 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 15:54:25,452 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-18 15:54:25,452 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 15:54:25,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:54:25,452 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 15:54:25,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 15:54:25,453 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 15:54:25,453 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-18 15:54:25,453 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 15:54:25,453 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-04-18 15:54:25,453 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-04-18 15:54:25,453 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 15:54:25,453 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a956b76a4ba98ce13df4d83ef2fb7ffa0973225ecb152c14bcfbb55b6546601 [2022-04-18 15:54:25,648 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 15:54:25,668 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 15:54:25,670 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 15:54:25,671 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 15:54:25,671 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 15:54:25,672 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i [2022-04-18 15:54:25,715 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdaf1d7d4/02fc85b96ffd499d9fd3cbbcbb87c2f3/FLAG3eac04d84 [2022-04-18 15:54:26,156 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 15:54:26,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i [2022-04-18 15:54:26,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdaf1d7d4/02fc85b96ffd499d9fd3cbbcbb87c2f3/FLAG3eac04d84 [2022-04-18 15:54:26,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdaf1d7d4/02fc85b96ffd499d9fd3cbbcbb87c2f3 [2022-04-18 15:54:26,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 15:54:26,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 15:54:26,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 15:54:26,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 15:54:26,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 15:54:26,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:54:26" (1/1) ... [2022-04-18 15:54:26,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61524a51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:54:26, skipping insertion in model container [2022-04-18 15:54:26,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 03:54:26" (1/1) ... [2022-04-18 15:54:26,197 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 15:54:26,221 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 15:54:26,337 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-04-18 15:54:26,529 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-04-18 15:54:26,531 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-04-18 15:54:26,532 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-04-18 15:54:26,536 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-04-18 15:54:26,537 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-04-18 15:54:26,538 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-04-18 15:54:26,545 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:54:26,552 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 15:54:26,564 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-04-18 15:54:26,592 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39095,39108] [2022-04-18 15:54:26,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39180,39193] [2022-04-18 15:54:26,593 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39232,39245] [2022-04-18 15:54:26,596 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39641,39654] [2022-04-18 15:54:26,598 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39726,39739] [2022-04-18 15:54:26,599 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_1w1r-1.i[39778,39791] [2022-04-18 15:54:26,604 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 15:54:26,635 INFO L208 MainTranslator]: Completed translation [2022-04-18 15:54:26,636 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:54:26 WrapperNode [2022-04-18 15:54:26,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 15:54:26,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 15:54:26,638 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 15:54:26,638 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 15:54:26,643 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:54:26" (1/1) ... [2022-04-18 15:54:26,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:54:26" (1/1) ... [2022-04-18 15:54:26,708 INFO L137 Inliner]: procedures = 225, calls = 43, calls flagged for inlining = 10, calls inlined = 7, statements flattened = 198 [2022-04-18 15:54:26,709 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 15:54:26,710 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 15:54:26,710 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 15:54:26,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 15:54:26,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:54:26" (1/1) ... [2022-04-18 15:54:26,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:54:26" (1/1) ... [2022-04-18 15:54:26,733 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:54:26" (1/1) ... [2022-04-18 15:54:26,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:54:26" (1/1) ... [2022-04-18 15:54:26,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:54:26" (1/1) ... [2022-04-18 15:54:26,754 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:54:26" (1/1) ... [2022-04-18 15:54:26,755 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:54:26" (1/1) ... [2022-04-18 15:54:26,757 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 15:54:26,758 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 15:54:26,758 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 15:54:26,758 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 15:54:26,759 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:54:26" (1/1) ... [2022-04-18 15:54:26,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 15:54:26,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-18 15:54:26,787 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 15:54:26,812 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 15:54:26,823 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 15:54:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 15:54:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 15:54:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 15:54:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 15:54:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 15:54:26,824 INFO L130 BoogieDeclarations]: Found specification of procedure reader_nowait_fn [2022-04-18 15:54:26,824 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_nowait_fn [2022-04-18 15:54:26,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 15:54:26,825 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 15:54:26,827 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 15:54:26,900 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 15:54:26,909 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 15:54:27,257 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 15:54:27,274 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 15:54:27,274 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-04-18 15:54:27,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:54:27 BoogieIcfgContainer [2022-04-18 15:54:27,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 15:54:27,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 15:54:27,277 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 15:54:27,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 15:54:27,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 03:54:26" (1/3) ... [2022-04-18 15:54:27,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176c623f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:54:27, skipping insertion in model container [2022-04-18 15:54:27,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 03:54:26" (2/3) ... [2022-04-18 15:54:27,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@176c623f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 03:54:27, skipping insertion in model container [2022-04-18 15:54:27,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 03:54:27" (3/3) ... [2022-04-18 15:54:27,282 INFO L111 eAbstractionObserver]: Analyzing ICFG ring_1w1r-1.i [2022-04-18 15:54:27,289 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 15:54:27,289 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 15:54:27,290 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2022-04-18 15:54:27,290 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 15:54:27,341 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 15:54:27,373 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 15:54:27,378 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 15:54:27,378 INFO L341 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-04-18 15:54:27,388 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 233 places, 238 transitions, 484 flow [2022-04-18 15:54:27,467 INFO L129 PetriNetUnfolder]: 9/237 cut-off events. [2022-04-18 15:54:27,468 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:54:27,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 237 events. 9/237 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 523 event pairs, 0 based on Foata normal form. 0/213 useless extension candidates. Maximal degree in co-relation 180. Up to 2 conditions per place. [2022-04-18 15:54:27,480 INFO L82 GeneralOperation]: Start removeDead. Operand has 233 places, 238 transitions, 484 flow [2022-04-18 15:54:27,492 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 228 transitions, 459 flow [2022-04-18 15:54:27,497 INFO L129 PetriNetUnfolder]: 0/32 cut-off events. [2022-04-18 15:54:27,497 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-04-18 15:54:27,497 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:54:27,498 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] [2022-04-18 15:54:27,503 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:54:27,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:54:27,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1177147086, now seen corresponding path program 1 times [2022-04-18 15:54:27,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:54:27,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224614238] [2022-04-18 15:54:27,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:54:27,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:54:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:54:27,835 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 15:54:27,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:54:27,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224614238] [2022-04-18 15:54:27,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224614238] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:54:27,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:54:27,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:54:27,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593289144] [2022-04-18 15:54:27,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:54:27,845 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:54:27,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:54:27,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:54:27,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:54:27,877 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-04-18 15:54:27,883 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 228 transitions, 459 flow. Second operand has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 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 15:54:27,883 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:54:27,883 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-04-18 15:54:27,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:54:28,699 INFO L129 PetriNetUnfolder]: 1707/5507 cut-off events. [2022-04-18 15:54:28,700 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:54:28,710 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8799 conditions, 5507 events. 1707/5507 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 44867 event pairs, 1512 based on Foata normal form. 373/5144 useless extension candidates. Maximal degree in co-relation 8729. Up to 3276 conditions per place. [2022-04-18 15:54:28,731 INFO L132 encePairwiseOnDemand]: 226/238 looper letters, 91 selfloop transitions, 5 changer transitions 0/221 dead transitions. [2022-04-18 15:54:28,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 221 transitions, 637 flow [2022-04-18 15:54:28,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:54:28,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:54:28,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 907 transitions. [2022-04-18 15:54:28,747 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6351540616246498 [2022-04-18 15:54:28,748 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 907 transitions. [2022-04-18 15:54:28,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 907 transitions. [2022-04-18 15:54:28,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:54:28,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 907 transitions. [2022-04-18 15:54:28,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 151.16666666666666) internal successors, (907), 6 states have internal predecessors, (907), 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 15:54:28,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:54:28,766 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:54:28,768 INFO L186 Difference]: Start difference. First operand has 223 places, 228 transitions, 459 flow. Second operand 6 states and 907 transitions. [2022-04-18 15:54:28,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 221 transitions, 637 flow [2022-04-18 15:54:28,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 221 transitions, 636 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:54:28,778 INFO L242 Difference]: Finished difference. Result has 226 places, 221 transitions, 454 flow [2022-04-18 15:54:28,780 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=444, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=454, PETRI_PLACES=226, PETRI_TRANSITIONS=221} [2022-04-18 15:54:28,784 INFO L335 CegarLoopForPetriNet]: 223 programPoint places, 3 predicate places. [2022-04-18 15:54:28,785 INFO L478 AbstractCegarLoop]: Abstraction has has 226 places, 221 transitions, 454 flow [2022-04-18 15:54:28,786 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.5) internal successors, (813), 6 states have internal predecessors, (813), 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 15:54:28,786 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:54:28,787 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] [2022-04-18 15:54:28,787 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 15:54:28,787 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:54:28,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:54:28,788 INFO L85 PathProgramCache]: Analyzing trace with hash 1648035877, now seen corresponding path program 1 times [2022-04-18 15:54:28,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:54:28,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288934468] [2022-04-18 15:54:28,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:54:28,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:54:28,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:54:28,933 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 15:54:28,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:54:28,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288934468] [2022-04-18 15:54:28,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288934468] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:54:28,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:54:28,935 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:54:28,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354737376] [2022-04-18 15:54:28,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:54:28,941 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:54:28,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:54:28,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:54:28,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:54:28,944 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-04-18 15:54:28,944 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 221 transitions, 454 flow. Second operand has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 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 15:54:28,945 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:54:28,945 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-04-18 15:54:28,945 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:54:29,739 INFO L129 PetriNetUnfolder]: 1707/5506 cut-off events. [2022-04-18 15:54:29,739 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:54:29,747 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8802 conditions, 5506 events. 1707/5506 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 44824 event pairs, 1512 based on Foata normal form. 0/4771 useless extension candidates. Maximal degree in co-relation 8739. Up to 3282 conditions per place. [2022-04-18 15:54:29,766 INFO L132 encePairwiseOnDemand]: 232/238 looper letters, 90 selfloop transitions, 5 changer transitions 0/220 dead transitions. [2022-04-18 15:54:29,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 220 transitions, 642 flow [2022-04-18 15:54:29,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:54:29,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:54:29,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 900 transitions. [2022-04-18 15:54:29,772 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.6302521008403361 [2022-04-18 15:54:29,772 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 900 transitions. [2022-04-18 15:54:29,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 900 transitions. [2022-04-18 15:54:29,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:54:29,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 900 transitions. [2022-04-18 15:54:29,774 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 150.0) internal successors, (900), 6 states have internal predecessors, (900), 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 15:54:29,776 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:54:29,777 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:54:29,777 INFO L186 Difference]: Start difference. First operand has 226 places, 221 transitions, 454 flow. Second operand 6 states and 900 transitions. [2022-04-18 15:54:29,777 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 220 transitions, 642 flow [2022-04-18 15:54:29,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 220 transitions, 632 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:54:29,782 INFO L242 Difference]: Finished difference. Result has 225 places, 220 transitions, 452 flow [2022-04-18 15:54:29,782 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=452, PETRI_PLACES=225, PETRI_TRANSITIONS=220} [2022-04-18 15:54:29,783 INFO L335 CegarLoopForPetriNet]: 223 programPoint places, 2 predicate places. [2022-04-18 15:54:29,783 INFO L478 AbstractCegarLoop]: Abstraction has has 225 places, 220 transitions, 452 flow [2022-04-18 15:54:29,783 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.5) internal successors, (819), 6 states have internal predecessors, (819), 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 15:54:29,784 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:54:29,784 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, 1, 1, 1, 1] [2022-04-18 15:54:29,784 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 15:54:29,784 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:54:29,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:54:29,785 INFO L85 PathProgramCache]: Analyzing trace with hash -765257624, now seen corresponding path program 1 times [2022-04-18 15:54:29,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:54:29,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962441473] [2022-04-18 15:54:29,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:54:29,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:54:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:54:29,878 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 15:54:29,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:54:29,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962441473] [2022-04-18 15:54:29,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962441473] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:54:29,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:54:29,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:54:29,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239226979] [2022-04-18 15:54:29,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:54:29,881 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:54:29,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:54:29,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:54:29,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:54:29,883 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 238 [2022-04-18 15:54:29,885 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 220 transitions, 452 flow. Second operand has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 15:54:29,885 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:54:29,885 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 238 [2022-04-18 15:54:29,886 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:54:31,086 INFO L129 PetriNetUnfolder]: 2901/8103 cut-off events. [2022-04-18 15:54:31,087 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 15:54:31,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13756 conditions, 8103 events. 2901/8103 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 64996 event pairs, 912 based on Foata normal form. 0/7101 useless extension candidates. Maximal degree in co-relation 13697. Up to 3784 conditions per place. [2022-04-18 15:54:31,134 INFO L132 encePairwiseOnDemand]: 217/238 looper letters, 242 selfloop transitions, 43 changer transitions 0/410 dead transitions. [2022-04-18 15:54:31,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 410 transitions, 1402 flow [2022-04-18 15:54:31,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:54:31,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:54:31,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1091 transitions. [2022-04-18 15:54:31,137 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7640056022408963 [2022-04-18 15:54:31,137 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1091 transitions. [2022-04-18 15:54:31,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1091 transitions. [2022-04-18 15:54:31,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:54:31,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1091 transitions. [2022-04-18 15:54:31,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 181.83333333333334) internal successors, (1091), 6 states have internal predecessors, (1091), 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 15:54:31,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:54:31,144 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:54:31,144 INFO L186 Difference]: Start difference. First operand has 225 places, 220 transitions, 452 flow. Second operand 6 states and 1091 transitions. [2022-04-18 15:54:31,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 410 transitions, 1402 flow [2022-04-18 15:54:31,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 410 transitions, 1392 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-04-18 15:54:31,152 INFO L242 Difference]: Finished difference. Result has 230 places, 262 transitions, 738 flow [2022-04-18 15:54:31,153 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=738, PETRI_PLACES=230, PETRI_TRANSITIONS=262} [2022-04-18 15:54:31,155 INFO L335 CegarLoopForPetriNet]: 223 programPoint places, 7 predicate places. [2022-04-18 15:54:31,155 INFO L478 AbstractCegarLoop]: Abstraction has has 230 places, 262 transitions, 738 flow [2022-04-18 15:54:31,156 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 15:54:31,156 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:54:31,156 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, 1, 1, 1, 1, 1] [2022-04-18 15:54:31,156 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 15:54:31,157 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:54:31,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:54:31,157 INFO L85 PathProgramCache]: Analyzing trace with hash -942807167, now seen corresponding path program 1 times [2022-04-18 15:54:31,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:54:31,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288453631] [2022-04-18 15:54:31,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:54:31,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:54:31,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:54:31,230 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 15:54:31,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:54:31,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288453631] [2022-04-18 15:54:31,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288453631] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:54:31,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:54:31,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:54:31,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966178604] [2022-04-18 15:54:31,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:54:31,235 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:54:31,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:54:31,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:54:31,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:54:31,237 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 225 out of 238 [2022-04-18 15:54:31,238 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 262 transitions, 738 flow. Second operand has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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 15:54:31,238 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:54:31,238 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 225 of 238 [2022-04-18 15:54:31,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:54:31,472 INFO L129 PetriNetUnfolder]: 339/2508 cut-off events. [2022-04-18 15:54:31,472 INFO L130 PetriNetUnfolder]: For 222/234 co-relation queries the response was YES. [2022-04-18 15:54:31,538 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3666 conditions, 2508 events. 339/2508 cut-off events. For 222/234 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 17637 event pairs, 16 based on Foata normal form. 0/2289 useless extension candidates. Maximal degree in co-relation 3610. Up to 342 conditions per place. [2022-04-18 15:54:31,547 INFO L132 encePairwiseOnDemand]: 235/238 looper letters, 7 selfloop transitions, 2 changer transitions 0/265 dead transitions. [2022-04-18 15:54:31,548 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 265 transitions, 762 flow [2022-04-18 15:54:31,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:54:31,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:54:31,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 685 transitions. [2022-04-18 15:54:31,550 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9593837535014006 [2022-04-18 15:54:31,550 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 685 transitions. [2022-04-18 15:54:31,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 685 transitions. [2022-04-18 15:54:31,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:54:31,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 685 transitions. [2022-04-18 15:54:31,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 228.33333333333334) internal successors, (685), 3 states have internal predecessors, (685), 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 15:54:31,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 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 15:54:31,556 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 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 15:54:31,556 INFO L186 Difference]: Start difference. First operand has 230 places, 262 transitions, 738 flow. Second operand 3 states and 685 transitions. [2022-04-18 15:54:31,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 265 transitions, 762 flow [2022-04-18 15:54:31,563 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 265 transitions, 762 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:54:31,566 INFO L242 Difference]: Finished difference. Result has 233 places, 263 transitions, 750 flow [2022-04-18 15:54:31,566 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=738, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=750, PETRI_PLACES=233, PETRI_TRANSITIONS=263} [2022-04-18 15:54:31,571 INFO L335 CegarLoopForPetriNet]: 223 programPoint places, 10 predicate places. [2022-04-18 15:54:31,571 INFO L478 AbstractCegarLoop]: Abstraction has has 233 places, 263 transitions, 750 flow [2022-04-18 15:54:31,572 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 226.0) internal successors, (678), 3 states have internal predecessors, (678), 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 15:54:31,572 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:54:31,572 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, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:54:31,572 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-04-18 15:54:31,572 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:54:31,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:54:31,573 INFO L85 PathProgramCache]: Analyzing trace with hash -916765828, now seen corresponding path program 1 times [2022-04-18 15:54:31,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:54:31,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809048297] [2022-04-18 15:54:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:54:31,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:54:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:54:31,645 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 15:54:31,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:54:31,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809048297] [2022-04-18 15:54:31,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809048297] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:54:31,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:54:31,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 15:54:31,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404529464] [2022-04-18 15:54:31,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:54:31,647 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 15:54:31,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:54:31,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 15:54:31,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 15:54:31,649 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 223 out of 238 [2022-04-18 15:54:31,649 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 263 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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 15:54:31,650 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:54:31,650 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 223 of 238 [2022-04-18 15:54:31,650 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:54:32,085 INFO L129 PetriNetUnfolder]: 587/3788 cut-off events. [2022-04-18 15:54:32,085 INFO L130 PetriNetUnfolder]: For 448/501 co-relation queries the response was YES. [2022-04-18 15:54:32,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6058 conditions, 3788 events. 587/3788 cut-off events. For 448/501 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 30041 event pairs, 46 based on Foata normal form. 0/3487 useless extension candidates. Maximal degree in co-relation 6000. Up to 647 conditions per place. [2022-04-18 15:54:32,116 INFO L132 encePairwiseOnDemand]: 235/238 looper letters, 10 selfloop transitions, 2 changer transitions 0/267 dead transitions. [2022-04-18 15:54:32,116 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 267 transitions, 782 flow [2022-04-18 15:54:32,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 15:54:32,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-04-18 15:54:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 682 transitions. [2022-04-18 15:54:32,118 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.9551820728291317 [2022-04-18 15:54:32,119 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 682 transitions. [2022-04-18 15:54:32,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 682 transitions. [2022-04-18 15:54:32,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:54:32,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 682 transitions. [2022-04-18 15:54:32,120 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 227.33333333333334) internal successors, (682), 3 states have internal predecessors, (682), 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 15:54:32,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 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 15:54:32,122 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 238.0) internal successors, (952), 4 states have internal predecessors, (952), 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 15:54:32,122 INFO L186 Difference]: Start difference. First operand has 233 places, 263 transitions, 750 flow. Second operand 3 states and 682 transitions. [2022-04-18 15:54:32,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 267 transitions, 782 flow [2022-04-18 15:54:32,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 267 transitions, 780 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:54:32,131 INFO L242 Difference]: Finished difference. Result has 235 places, 264 transitions, 760 flow [2022-04-18 15:54:32,131 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=748, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=760, PETRI_PLACES=235, PETRI_TRANSITIONS=264} [2022-04-18 15:54:32,132 INFO L335 CegarLoopForPetriNet]: 223 programPoint places, 12 predicate places. [2022-04-18 15:54:32,132 INFO L478 AbstractCegarLoop]: Abstraction has has 235 places, 264 transitions, 760 flow [2022-04-18 15:54:32,133 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 224.33333333333334) internal successors, (673), 3 states have internal predecessors, (673), 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 15:54:32,133 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:54:32,133 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:54:32,133 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-04-18 15:54:32,133 INFO L403 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:54:32,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:54:32,134 INFO L85 PathProgramCache]: Analyzing trace with hash 159417040, now seen corresponding path program 1 times [2022-04-18 15:54:32,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:54:32,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614893652] [2022-04-18 15:54:32,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:54:32,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:54:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:54:32,226 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 15:54:32,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:54:32,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614893652] [2022-04-18 15:54:32,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [614893652] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:54:32,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:54:32,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:54:32,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468357989] [2022-04-18 15:54:32,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:54:32,227 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:54:32,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:54:32,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:54:32,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:54:32,229 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-04-18 15:54:32,230 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 264 transitions, 760 flow. Second operand has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 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 15:54:32,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:54:32,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-04-18 15:54:32,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:54:35,781 INFO L129 PetriNetUnfolder]: 11063/29240 cut-off events. [2022-04-18 15:54:35,781 INFO L130 PetriNetUnfolder]: For 8997/9186 co-relation queries the response was YES. [2022-04-18 15:54:35,844 INFO L84 FinitePrefix]: Finished finitePrefix Result has 61036 conditions, 29240 events. 11063/29240 cut-off events. For 8997/9186 co-relation queries the response was YES. Maximal size of possible extension queue 266. Compared 272891 event pairs, 2766 based on Foata normal form. 0/26646 useless extension candidates. Maximal degree in co-relation 60967. Up to 12020 conditions per place. [2022-04-18 15:54:35,931 INFO L132 encePairwiseOnDemand]: 214/238 looper letters, 319 selfloop transitions, 45 changer transitions 0/489 dead transitions. [2022-04-18 15:54:35,931 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 489 transitions, 2246 flow [2022-04-18 15:54:35,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:54:35,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:54:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1069 transitions. [2022-04-18 15:54:35,934 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7485994397759104 [2022-04-18 15:54:35,934 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1069 transitions. [2022-04-18 15:54:35,934 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1069 transitions. [2022-04-18 15:54:35,935 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:54:35,935 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1069 transitions. [2022-04-18 15:54:35,936 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.16666666666666) internal successors, (1069), 6 states have internal predecessors, (1069), 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 15:54:35,938 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:54:35,938 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:54:35,939 INFO L186 Difference]: Start difference. First operand has 235 places, 264 transitions, 760 flow. Second operand 6 states and 1069 transitions. [2022-04-18 15:54:35,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 489 transitions, 2246 flow [2022-04-18 15:54:35,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 489 transitions, 2244 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-04-18 15:54:35,973 INFO L242 Difference]: Finished difference. Result has 244 places, 308 transitions, 1150 flow [2022-04-18 15:54:35,973 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=758, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1150, PETRI_PLACES=244, PETRI_TRANSITIONS=308} [2022-04-18 15:54:35,974 INFO L335 CegarLoopForPetriNet]: 223 programPoint places, 21 predicate places. [2022-04-18 15:54:35,974 INFO L478 AbstractCegarLoop]: Abstraction has has 244 places, 308 transitions, 1150 flow [2022-04-18 15:54:35,975 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.16666666666666) internal successors, (811), 6 states have internal predecessors, (811), 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 15:54:35,975 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:54:35,975 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:54:35,975 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-04-18 15:54:35,975 INFO L403 AbstractCegarLoop]: === Iteration 7 === Targeting reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:54:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:54:35,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1457571279, now seen corresponding path program 1 times [2022-04-18 15:54:35,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:54:35,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021710073] [2022-04-18 15:54:35,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:54:35,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:54:35,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:54:36,053 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 15:54:36,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:54:36,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021710073] [2022-04-18 15:54:36,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021710073] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:54:36,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:54:36,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:54:36,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426847686] [2022-04-18 15:54:36,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:54:36,055 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:54:36,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:54:36,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:54:36,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:54:36,056 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 238 [2022-04-18 15:54:36,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 308 transitions, 1150 flow. Second operand has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 15:54:36,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:54:36,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 238 [2022-04-18 15:54:36,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:54:40,660 INFO L129 PetriNetUnfolder]: 11656/31737 cut-off events. [2022-04-18 15:54:40,660 INFO L130 PetriNetUnfolder]: For 18635/18753 co-relation queries the response was YES. [2022-04-18 15:54:40,735 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75204 conditions, 31737 events. 11656/31737 cut-off events. For 18635/18753 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 301656 event pairs, 6320 based on Foata normal form. 8/29520 useless extension candidates. Maximal degree in co-relation 75131. Up to 19882 conditions per place. [2022-04-18 15:54:40,832 INFO L132 encePairwiseOnDemand]: 223/238 looper letters, 373 selfloop transitions, 78 changer transitions 0/577 dead transitions. [2022-04-18 15:54:40,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 577 transitions, 3270 flow [2022-04-18 15:54:40,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:54:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:54:40,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1068 transitions. [2022-04-18 15:54:40,835 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7478991596638656 [2022-04-18 15:54:40,835 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1068 transitions. [2022-04-18 15:54:40,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1068 transitions. [2022-04-18 15:54:40,835 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:54:40,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1068 transitions. [2022-04-18 15:54:40,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 178.0) internal successors, (1068), 6 states have internal predecessors, (1068), 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 15:54:40,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:54:40,841 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:54:40,841 INFO L186 Difference]: Start difference. First operand has 244 places, 308 transitions, 1150 flow. Second operand 6 states and 1068 transitions. [2022-04-18 15:54:40,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 577 transitions, 3270 flow [2022-04-18 15:54:40,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 577 transitions, 3270 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:54:40,888 INFO L242 Difference]: Finished difference. Result has 254 places, 385 transitions, 1968 flow [2022-04-18 15:54:40,889 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1968, PETRI_PLACES=254, PETRI_TRANSITIONS=385} [2022-04-18 15:54:40,889 INFO L335 CegarLoopForPetriNet]: 223 programPoint places, 31 predicate places. [2022-04-18 15:54:40,889 INFO L478 AbstractCegarLoop]: Abstraction has has 254 places, 385 transitions, 1968 flow [2022-04-18 15:54:40,890 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 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 15:54:40,890 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:54:40,890 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 15:54:40,890 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-04-18 15:54:40,891 INFO L403 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:54:40,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:54:40,891 INFO L85 PathProgramCache]: Analyzing trace with hash 725118963, now seen corresponding path program 1 times [2022-04-18 15:54:40,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:54:40,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554488652] [2022-04-18 15:54:40,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:54:40,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:54:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:54:40,977 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 15:54:40,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:54:40,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554488652] [2022-04-18 15:54:40,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554488652] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:54:40,978 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:54:40,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:54:40,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038520297] [2022-04-18 15:54:40,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:54:40,981 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:54:40,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:54:40,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:54:40,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:54:40,982 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-04-18 15:54:40,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 385 transitions, 1968 flow. Second operand has 6 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 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 15:54:40,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:54:40,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-04-18 15:54:40,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:54:45,812 INFO L129 PetriNetUnfolder]: 13545/35766 cut-off events. [2022-04-18 15:54:45,812 INFO L130 PetriNetUnfolder]: For 29251/29442 co-relation queries the response was YES. [2022-04-18 15:54:45,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 93225 conditions, 35766 events. 13545/35766 cut-off events. For 29251/29442 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 344672 event pairs, 4776 based on Foata normal form. 0/33529 useless extension candidates. Maximal degree in co-relation 93147. Up to 18056 conditions per place. [2022-04-18 15:54:46,024 INFO L132 encePairwiseOnDemand]: 227/238 looper letters, 458 selfloop transitions, 66 changer transitions 0/650 dead transitions. [2022-04-18 15:54:46,025 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 650 transitions, 4264 flow [2022-04-18 15:54:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:54:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:54:46,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1057 transitions. [2022-04-18 15:54:46,027 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7401960784313726 [2022-04-18 15:54:46,027 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1057 transitions. [2022-04-18 15:54:46,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1057 transitions. [2022-04-18 15:54:46,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:54:46,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1057 transitions. [2022-04-18 15:54:46,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 176.16666666666666) internal successors, (1057), 6 states have internal predecessors, (1057), 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 15:54:46,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:54:46,032 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:54:46,032 INFO L186 Difference]: Start difference. First operand has 254 places, 385 transitions, 1968 flow. Second operand 6 states and 1057 transitions. [2022-04-18 15:54:46,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 650 transitions, 4264 flow [2022-04-18 15:54:46,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 650 transitions, 4264 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:54:46,120 INFO L242 Difference]: Finished difference. Result has 264 places, 447 transitions, 2730 flow [2022-04-18 15:54:46,121 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=346, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2730, PETRI_PLACES=264, PETRI_TRANSITIONS=447} [2022-04-18 15:54:46,122 INFO L335 CegarLoopForPetriNet]: 223 programPoint places, 41 predicate places. [2022-04-18 15:54:46,122 INFO L478 AbstractCegarLoop]: Abstraction has has 264 places, 447 transitions, 2730 flow [2022-04-18 15:54:46,122 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 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 15:54:46,122 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:54:46,123 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, 1, 1, 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 15:54:46,123 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-04-18 15:54:46,123 INFO L403 AbstractCegarLoop]: === Iteration 9 === Targeting reader_nowait_fnErr3ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:54:46,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:54:46,123 INFO L85 PathProgramCache]: Analyzing trace with hash -972379362, now seen corresponding path program 1 times [2022-04-18 15:54:46,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:54:46,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088375835] [2022-04-18 15:54:46,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:54:46,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:54:46,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:54:46,195 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 15:54:46,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:54:46,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088375835] [2022-04-18 15:54:46,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088375835] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:54:46,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:54:46,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:54:46,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078751441] [2022-04-18 15:54:46,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:54:46,197 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:54:46,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:54:46,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:54:46,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:54:46,199 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 238 [2022-04-18 15:54:46,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 447 transitions, 2730 flow. Second operand has 6 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 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 15:54:46,200 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:54:46,200 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 238 [2022-04-18 15:54:46,200 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:54:52,438 INFO L129 PetriNetUnfolder]: 15015/40908 cut-off events. [2022-04-18 15:54:52,439 INFO L130 PetriNetUnfolder]: For 42063/42363 co-relation queries the response was YES. [2022-04-18 15:54:52,649 INFO L84 FinitePrefix]: Finished finitePrefix Result has 110798 conditions, 40908 events. 15015/40908 cut-off events. For 42063/42363 co-relation queries the response was YES. Maximal size of possible extension queue 350. Compared 405923 event pairs, 8126 based on Foata normal form. 66/38715 useless extension candidates. Maximal degree in co-relation 110715. Up to 27986 conditions per place. [2022-04-18 15:54:52,780 INFO L132 encePairwiseOnDemand]: 203/238 looper letters, 356 selfloop transitions, 172 changer transitions 0/654 dead transitions. [2022-04-18 15:54:52,780 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 654 transitions, 4778 flow [2022-04-18 15:54:52,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:54:52,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:54:52,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1063 transitions. [2022-04-18 15:54:52,786 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7443977591036415 [2022-04-18 15:54:52,786 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1063 transitions. [2022-04-18 15:54:52,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1063 transitions. [2022-04-18 15:54:52,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:54:52,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1063 transitions. [2022-04-18 15:54:52,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 177.16666666666666) internal successors, (1063), 6 states have internal predecessors, (1063), 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 15:54:52,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:54:52,790 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:54:52,791 INFO L186 Difference]: Start difference. First operand has 264 places, 447 transitions, 2730 flow. Second operand 6 states and 1063 transitions. [2022-04-18 15:54:52,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 654 transitions, 4778 flow [2022-04-18 15:54:53,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 654 transitions, 4778 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-04-18 15:54:53,019 INFO L242 Difference]: Finished difference. Result has 274 places, 594 transitions, 4302 flow [2022-04-18 15:54:53,020 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=2730, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=447, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4302, PETRI_PLACES=274, PETRI_TRANSITIONS=594} [2022-04-18 15:54:53,020 INFO L335 CegarLoopForPetriNet]: 223 programPoint places, 51 predicate places. [2022-04-18 15:54:53,020 INFO L478 AbstractCegarLoop]: Abstraction has has 274 places, 594 transitions, 4302 flow [2022-04-18 15:54:53,021 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 138.33333333333334) internal successors, (830), 6 states have internal predecessors, (830), 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 15:54:53,021 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:54:53,021 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, 1, 1, 1, 1, 1, 1, 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 15:54:53,021 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-04-18 15:54:53,021 INFO L403 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:54:53,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:54:53,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1457297609, now seen corresponding path program 1 times [2022-04-18 15:54:53,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:54:53,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169561777] [2022-04-18 15:54:53,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:54:53,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:54:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:54:53,087 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 15:54:53,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:54:53,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169561777] [2022-04-18 15:54:53,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169561777] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:54:53,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:54:53,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 15:54:53,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769436304] [2022-04-18 15:54:53,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:54:53,092 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 15:54:53,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:54:53,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 15:54:53,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 15:54:53,093 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 238 [2022-04-18 15:54:53,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 594 transitions, 4302 flow. Second operand has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 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 15:54:53,094 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:54:53,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 238 [2022-04-18 15:54:53,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-04-18 15:55:00,514 INFO L129 PetriNetUnfolder]: 16462/43299 cut-off events. [2022-04-18 15:55:00,514 INFO L130 PetriNetUnfolder]: For 65270/65383 co-relation queries the response was YES. [2022-04-18 15:55:00,745 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134021 conditions, 43299 events. 16462/43299 cut-off events. For 65270/65383 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 427362 event pairs, 8351 based on Foata normal form. 0/41271 useless extension candidates. Maximal degree in co-relation 133933. Up to 30988 conditions per place. [2022-04-18 15:55:01,021 INFO L132 encePairwiseOnDemand]: 207/238 looper letters, 482 selfloop transitions, 167 changer transitions 0/773 dead transitions. [2022-04-18 15:55:01,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 773 transitions, 6474 flow [2022-04-18 15:55:01,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 15:55:01,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-04-18 15:55:01,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1024 transitions. [2022-04-18 15:55:01,025 INFO L547 CegarLoopForPetriNet]: DFA transition density 0.7170868347338936 [2022-04-18 15:55:01,025 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1024 transitions. [2022-04-18 15:55:01,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1024 transitions. [2022-04-18 15:55:01,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-04-18 15:55:01,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1024 transitions. [2022-04-18 15:55:01,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 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 15:55:01,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:55:01,030 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 238.0) internal successors, (1666), 7 states have internal predecessors, (1666), 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 15:55:01,030 INFO L186 Difference]: Start difference. First operand has 274 places, 594 transitions, 4302 flow. Second operand 6 states and 1024 transitions. [2022-04-18 15:55:01,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 773 transitions, 6474 flow [2022-04-18 15:55:01,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 773 transitions, 6242 flow, removed 116 selfloop flow, removed 0 redundant places. [2022-04-18 15:55:01,225 INFO L242 Difference]: Finished difference. Result has 284 places, 721 transitions, 5510 flow [2022-04-18 15:55:01,226 INFO L318 CegarLoopForPetriNet]: {PETRI_ALPHABET=238, PETRI_DIFFERENCE_MINUEND_FLOW=4082, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=5510, PETRI_PLACES=284, PETRI_TRANSITIONS=721} [2022-04-18 15:55:01,227 INFO L335 CegarLoopForPetriNet]: 223 programPoint places, 61 predicate places. [2022-04-18 15:55:01,227 INFO L478 AbstractCegarLoop]: Abstraction has has 284 places, 721 transitions, 5510 flow [2022-04-18 15:55:01,227 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 135.33333333333334) internal successors, (812), 6 states have internal predecessors, (812), 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 15:55:01,227 INFO L247 CegarLoopForPetriNet]: Found error trace [2022-04-18 15:55:01,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:55:01,228 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-04-18 15:55:01,228 INFO L403 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_nowait_fnErr0ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr4ASSERT_VIOLATIONDATA_RACE, reader_nowait_fnErr1ASSERT_VIOLATIONDATA_RACE (and 19 more)] === [2022-04-18 15:55:01,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 15:55:01,228 INFO L85 PathProgramCache]: Analyzing trace with hash 303689615, now seen corresponding path program 1 times [2022-04-18 15:55:01,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-18 15:55:01,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793980808] [2022-04-18 15:55:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 15:55:01,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 15:55:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 15:55:02,875 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 15:55:02,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-18 15:55:02,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793980808] [2022-04-18 15:55:02,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793980808] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 15:55:02,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 15:55:02,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-04-18 15:55:02,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085497375] [2022-04-18 15:55:02,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 15:55:02,877 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-04-18 15:55:02,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-18 15:55:02,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-04-18 15:55:02,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-04-18 15:55:02,880 INFO L502 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 238 [2022-04-18 15:55:02,882 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 721 transitions, 5510 flow. Second operand has 20 states, 20 states have (on average 113.65) internal successors, (2273), 20 states have internal predecessors, (2273), 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 15:55:02,882 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-04-18 15:55:02,882 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 238 [2022-04-18 15:55:02,883 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand