./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/pthread-divine/ring_2w1r-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 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 01:56:27,384 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 01:56:27,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 01:56:27,419 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 01:56:27,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 01:56:27,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 01:56:27,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 01:56:27,427 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 01:56:27,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 01:56:27,432 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 01:56:27,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 01:56:27,435 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 01:56:27,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 01:56:27,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 01:56:27,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 01:56:27,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 01:56:27,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 01:56:27,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 01:56:27,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 01:56:27,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 01:56:27,448 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 01:56:27,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 01:56:27,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 01:56:27,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 01:56:27,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 01:56:27,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 01:56:27,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 01:56:27,458 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 01:56:27,459 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 01:56:27,459 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 01:56:27,459 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 01:56:27,463 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 01:56:27,464 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 01:56:27,465 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 01:56:27,466 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 01:56:27,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 01:56:27,467 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 01:56:27,467 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 01:56:27,467 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 01:56:27,468 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 01:56:27,468 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 01:56:27,470 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 01:56:27,495 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 01:56:27,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 01:56:27,496 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 01:56:27,496 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 01:56:27,497 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 01:56:27,497 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 01:56:27,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 01:56:27,498 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 01:56:27,498 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 01:56:27,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 01:56:27,498 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 01:56:27,499 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 01:56:27,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 01:56:27,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 01:56:27,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 01:56:27,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 01:56:27,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 01:56:27,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 01:56:27,500 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 01:56:27,500 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 01:56:27,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 01:56:27,500 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 01:56:27,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 01:56:27,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 01:56:27,501 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 01:56:27,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 01:56:27,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 01:56:27,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 01:56:27,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 01:56:27,501 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 01:56:27,501 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 01:56:27,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 01:56:27,502 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 01:56:27,502 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 01:56:27,502 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 01:56:27,502 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 01:56:27,502 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 01:56:27,503 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 01:56:27,740 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 01:56:27,751 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 01:56:27,752 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 01:56:27,753 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 01:56:27,753 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 01:56:27,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i [2023-08-29 01:56:28,743 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 01:56:28,956 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 01:56:28,956 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i [2023-08-29 01:56:28,972 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d10084b2d/d4f10d4ae5954061bbb271fe4ef2e450/FLAGa131f1e7c [2023-08-29 01:56:28,982 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d10084b2d/d4f10d4ae5954061bbb271fe4ef2e450 [2023-08-29 01:56:28,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 01:56:28,985 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 01:56:28,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 01:56:28,986 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 01:56:28,992 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 01:56:28,992 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:56:28" (1/1) ... [2023-08-29 01:56:28,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d6bdc0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:56:28, skipping insertion in model container [2023-08-29 01:56:28,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 01:56:28" (1/1) ... [2023-08-29 01:56:28,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 01:56:29,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 01:56:29,193 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 01:56:29,405 WARN L247 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_2w1r-1.i[39095,39108] [2023-08-29 01:56:29,407 WARN L247 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_2w1r-1.i[39180,39193] [2023-08-29 01:56:29,407 WARN L247 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_2w1r-1.i[39232,39245] [2023-08-29 01:56:29,480 WARN L247 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_2w1r-1.i[49388,49401] [2023-08-29 01:56:29,490 WARN L247 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_2w1r-1.i[49437,49450] [2023-08-29 01:56:29,492 WARN L247 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_2w1r-1.i[49565,49578] [2023-08-29 01:56:29,492 WARN L247 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_2w1r-1.i[49623,49636] [2023-08-29 01:56:29,499 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 01:56:29,509 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 01:56:29,521 WARN L633 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2023-08-29 01:56:29,542 WARN L247 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_2w1r-1.i[39095,39108] [2023-08-29 01:56:29,548 WARN L247 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_2w1r-1.i[39180,39193] [2023-08-29 01:56:29,549 WARN L247 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_2w1r-1.i[39232,39245] [2023-08-29 01:56:29,553 WARN L247 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_2w1r-1.i[49388,49401] [2023-08-29 01:56:29,556 WARN L247 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_2w1r-1.i[49437,49450] [2023-08-29 01:56:29,559 WARN L247 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_2w1r-1.i[49565,49578] [2023-08-29 01:56:29,560 WARN L247 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_2w1r-1.i[49623,49636] [2023-08-29 01:56:29,563 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 01:56:29,611 WARN L667 CHandler]: The function __builtin_bswap16 is called, but not defined or handled by StandardFunctionHandler. [2023-08-29 01:56:29,616 INFO L208 MainTranslator]: Completed translation [2023-08-29 01:56:29,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:56:29 WrapperNode [2023-08-29 01:56:29,616 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 01:56:29,617 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 01:56:29,617 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 01:56:29,618 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 01:56:29,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:56:29" (1/1) ... [2023-08-29 01:56:29,647 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:56:29" (1/1) ... [2023-08-29 01:56:29,692 INFO L138 Inliner]: procedures = 310, calls = 70, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 349 [2023-08-29 01:56:29,693 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 01:56:29,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 01:56:29,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 01:56:29,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 01:56:29,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:56:29" (1/1) ... [2023-08-29 01:56:29,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:56:29" (1/1) ... [2023-08-29 01:56:29,703 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:56:29" (1/1) ... [2023-08-29 01:56:29,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:56:29" (1/1) ... [2023-08-29 01:56:29,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:56:29" (1/1) ... [2023-08-29 01:56:29,745 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:56:29" (1/1) ... [2023-08-29 01:56:29,747 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:56:29" (1/1) ... [2023-08-29 01:56:29,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:56:29" (1/1) ... [2023-08-29 01:56:29,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 01:56:29,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 01:56:29,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 01:56:29,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 01:56:29,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:56:29" (1/1) ... [2023-08-29 01:56:29,774 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 01:56:29,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 01:56:29,790 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 01:56:29,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 01:56:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2023-08-29 01:56:29,821 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2023-08-29 01:56:29,821 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2023-08-29 01:56:29,821 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2023-08-29 01:56:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 01:56:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 01:56:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 01:56:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 01:56:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 01:56:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 01:56:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 01:56:29,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 01:56:29,823 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 01:56:29,823 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 01:56:29,929 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 01:56:29,930 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 01:56:30,497 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 01:56:30,507 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 01:56:30,507 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-29 01:56:30,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:56:30 BoogieIcfgContainer [2023-08-29 01:56:30,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 01:56:30,511 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 01:56:30,511 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 01:56:30,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 01:56:30,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 01:56:28" (1/3) ... [2023-08-29 01:56:30,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549d5d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:56:30, skipping insertion in model container [2023-08-29 01:56:30,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 01:56:29" (2/3) ... [2023-08-29 01:56:30,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@549d5d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 01:56:30, skipping insertion in model container [2023-08-29 01:56:30,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 01:56:30" (3/3) ... [2023-08-29 01:56:30,520 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2023-08-29 01:56:30,526 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 01:56:30,532 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 01:56:30,533 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-29 01:56:30,533 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 01:56:30,658 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 01:56:30,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 375 places, 385 transitions, 786 flow [2023-08-29 01:56:30,840 INFO L130 PetriNetUnfolder]: 17/383 cut-off events. [2023-08-29 01:56:30,841 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 01:56:30,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 383 events. 17/383 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 886 event pairs, 0 based on Foata normal form. 0/340 useless extension candidates. Maximal degree in co-relation 317. Up to 2 conditions per place. [2023-08-29 01:56:30,851 INFO L82 GeneralOperation]: Start removeDead. Operand has 375 places, 385 transitions, 786 flow [2023-08-29 01:56:30,857 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 363 places, 373 transitions, 755 flow [2023-08-29 01:56:30,859 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 01:56:30,865 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 363 places, 373 transitions, 755 flow [2023-08-29 01:56:30,866 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 363 places, 373 transitions, 755 flow [2023-08-29 01:56:30,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 363 places, 373 transitions, 755 flow [2023-08-29 01:56:30,932 INFO L130 PetriNetUnfolder]: 17/373 cut-off events. [2023-08-29 01:56:30,932 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 01:56:30,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 373 events. 17/373 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 851 event pairs, 0 based on Foata normal form. 0/330 useless extension candidates. Maximal degree in co-relation 317. Up to 2 conditions per place. [2023-08-29 01:56:30,951 INFO L119 LiptonReduction]: Number of co-enabled transitions 62820 [2023-08-29 01:56:42,896 INFO L134 LiptonReduction]: Checked pairs total: 400716 [2023-08-29 01:56:42,896 INFO L136 LiptonReduction]: Total number of compositions: 208 [2023-08-29 01:56:42,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 01:56:42,909 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@78d03dea, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 01:56:42,909 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-08-29 01:56:42,910 INFO L130 PetriNetUnfolder]: 0/0 cut-off events. [2023-08-29 01:56:42,910 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 01:56:42,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:56:42,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-29 01:56:42,911 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-08-29 01:56:42,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:56:42,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1310, now seen corresponding path program 1 times [2023-08-29 01:56:42,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:56:42,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318937022] [2023-08-29 01:56:42,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:56:42,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:56:42,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:56:42,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 01:56:42,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:56:42,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318937022] [2023-08-29 01:56:42,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1318937022] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:56:42,987 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:56:42,987 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-29 01:56:42,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280324342] [2023-08-29 01:56:42,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:56:42,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 01:56:42,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:56:43,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 01:56:43,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 01:56:43,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 371 out of 593 [2023-08-29 01:56:43,015 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 203 transitions, 415 flow. Second operand has 2 states, 2 states have (on average 371.5) internal successors, (743), 2 states have internal predecessors, (743), 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) [2023-08-29 01:56:43,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:56:43,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 371 of 593 [2023-08-29 01:56:43,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:56:44,831 INFO L130 PetriNetUnfolder]: 5445/15793 cut-off events. [2023-08-29 01:56:44,831 INFO L131 PetriNetUnfolder]: For 47/47 co-relation queries the response was YES. [2023-08-29 01:56:44,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23529 conditions, 15793 events. 5445/15793 cut-off events. For 47/47 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 157177 event pairs, 4114 based on Foata normal form. 894/14528 useless extension candidates. Maximal degree in co-relation 23322. Up to 7682 conditions per place. [2023-08-29 01:56:44,913 INFO L137 encePairwiseOnDemand]: 586/593 looper letters, 49 selfloop transitions, 0 changer transitions 0/195 dead transitions. [2023-08-29 01:56:44,913 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 195 transitions, 497 flow [2023-08-29 01:56:44,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 01:56:44,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 01:56:44,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 798 transitions. [2023-08-29 01:56:44,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6728499156829679 [2023-08-29 01:56:44,928 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 798 transitions. [2023-08-29 01:56:44,928 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 798 transitions. [2023-08-29 01:56:44,931 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:56:44,932 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 798 transitions. [2023-08-29 01:56:44,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 399.0) internal successors, (798), 2 states have internal predecessors, (798), 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) [2023-08-29 01:56:44,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 593.0) internal successors, (1779), 3 states have internal predecessors, (1779), 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) [2023-08-29 01:56:44,944 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 593.0) internal successors, (1779), 3 states have internal predecessors, (1779), 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) [2023-08-29 01:56:44,945 INFO L175 Difference]: Start difference. First operand has 198 places, 203 transitions, 415 flow. Second operand 2 states and 798 transitions. [2023-08-29 01:56:44,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 195 transitions, 497 flow [2023-08-29 01:56:44,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 195 transitions, 492 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-29 01:56:44,952 INFO L231 Difference]: Finished difference. Result has 193 places, 195 transitions, 394 flow [2023-08-29 01:56:44,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=593, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=394, PETRI_PLACES=193, PETRI_TRANSITIONS=195} [2023-08-29 01:56:44,956 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -5 predicate places. [2023-08-29 01:56:44,957 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 195 transitions, 394 flow [2023-08-29 01:56:44,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 371.5) internal successors, (743), 2 states have internal predecessors, (743), 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) [2023-08-29 01:56:44,960 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:56:44,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:56:44,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 01:56:44,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-08-29 01:56:44,961 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:56:44,962 INFO L85 PathProgramCache]: Analyzing trace with hash -908113566, now seen corresponding path program 1 times [2023-08-29 01:56:44,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:56:44,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361322278] [2023-08-29 01:56:44,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:56:44,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:56:45,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:56:45,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 01:56:45,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:56:45,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361322278] [2023-08-29 01:56:45,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361322278] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:56:45,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:56:45,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 01:56:45,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956438640] [2023-08-29 01:56:45,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:56:45,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 01:56:45,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:56:45,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 01:56:45,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 01:56:45,122 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 593 [2023-08-29 01:56:45,123 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 195 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 369.0) internal successors, (1107), 3 states have internal predecessors, (1107), 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) [2023-08-29 01:56:45,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:56:45,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 593 [2023-08-29 01:56:45,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:56:47,730 INFO L130 PetriNetUnfolder]: 9752/30309 cut-off events. [2023-08-29 01:56:47,731 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-29 01:56:47,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44253 conditions, 30309 events. 9752/30309 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 340424 event pairs, 4114 based on Foata normal form. 0/26047 useless extension candidates. Maximal degree in co-relation 44250. Up to 7682 conditions per place. [2023-08-29 01:56:47,855 INFO L137 encePairwiseOnDemand]: 590/593 looper letters, 88 selfloop transitions, 2 changer transitions 0/236 dead transitions. [2023-08-29 01:56:47,856 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 236 transitions, 656 flow [2023-08-29 01:56:47,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 01:56:47,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 01:56:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1192 transitions. [2023-08-29 01:56:47,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6700393479482856 [2023-08-29 01:56:47,859 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1192 transitions. [2023-08-29 01:56:47,860 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1192 transitions. [2023-08-29 01:56:47,860 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:56:47,860 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1192 transitions. [2023-08-29 01:56:47,862 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 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) [2023-08-29 01:56:47,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 593.0) internal successors, (2372), 4 states have internal predecessors, (2372), 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) [2023-08-29 01:56:47,866 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 593.0) internal successors, (2372), 4 states have internal predecessors, (2372), 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) [2023-08-29 01:56:47,866 INFO L175 Difference]: Start difference. First operand has 193 places, 195 transitions, 394 flow. Second operand 3 states and 1192 transitions. [2023-08-29 01:56:47,866 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 236 transitions, 656 flow [2023-08-29 01:56:47,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 236 transitions, 656 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 01:56:47,872 INFO L231 Difference]: Finished difference. Result has 196 places, 196 transitions, 406 flow [2023-08-29 01:56:47,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=593, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=196, PETRI_TRANSITIONS=196} [2023-08-29 01:56:47,874 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, -2 predicate places. [2023-08-29 01:56:47,874 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 196 transitions, 406 flow [2023-08-29 01:56:47,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 369.0) internal successors, (1107), 3 states have internal predecessors, (1107), 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) [2023-08-29 01:56:47,875 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:56:47,875 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:56:47,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 01:56:47,875 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-08-29 01:56:47,877 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:56:47,877 INFO L85 PathProgramCache]: Analyzing trace with hash 722562609, now seen corresponding path program 1 times [2023-08-29 01:56:47,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:56:47,877 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552061340] [2023-08-29 01:56:47,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:56:47,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:56:47,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:56:48,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 01:56:48,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:56:48,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552061340] [2023-08-29 01:56:48,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552061340] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:56:48,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:56:48,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 01:56:48,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577590196] [2023-08-29 01:56:48,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:56:48,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 01:56:48,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:56:48,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 01:56:48,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 01:56:48,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 593 [2023-08-29 01:56:48,908 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 196 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 319.8333333333333) internal successors, (1919), 6 states have internal predecessors, (1919), 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) [2023-08-29 01:56:48,908 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:56:48,908 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 593 [2023-08-29 01:56:48,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:57:08,425 INFO L130 PetriNetUnfolder]: 129718/240093 cut-off events. [2023-08-29 01:57:08,425 INFO L131 PetriNetUnfolder]: For 2477/2477 co-relation queries the response was YES. [2023-08-29 01:57:08,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430650 conditions, 240093 events. 129718/240093 cut-off events. For 2477/2477 co-relation queries the response was YES. Maximal size of possible extension queue 3403. Compared 2549229 event pairs, 42971 based on Foata normal form. 0/213860 useless extension candidates. Maximal degree in co-relation 430645. Up to 123505 conditions per place. [2023-08-29 01:57:09,755 INFO L137 encePairwiseOnDemand]: 557/593 looper letters, 222 selfloop transitions, 81 changer transitions 0/409 dead transitions. [2023-08-29 01:57:09,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 409 transitions, 1438 flow [2023-08-29 01:57:09,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 01:57:09,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 01:57:09,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2213 transitions. [2023-08-29 01:57:09,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6219786396852164 [2023-08-29 01:57:09,759 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2213 transitions. [2023-08-29 01:57:09,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2213 transitions. [2023-08-29 01:57:09,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:57:09,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2213 transitions. [2023-08-29 01:57:09,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 368.8333333333333) internal successors, (2213), 6 states have internal predecessors, (2213), 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) [2023-08-29 01:57:09,768 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 593.0) internal successors, (4151), 7 states have internal predecessors, (4151), 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) [2023-08-29 01:57:09,770 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 593.0) internal successors, (4151), 7 states have internal predecessors, (4151), 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) [2023-08-29 01:57:09,770 INFO L175 Difference]: Start difference. First operand has 196 places, 196 transitions, 406 flow. Second operand 6 states and 2213 transitions. [2023-08-29 01:57:09,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 409 transitions, 1438 flow [2023-08-29 01:57:09,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 409 transitions, 1436 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 01:57:09,780 INFO L231 Difference]: Finished difference. Result has 205 places, 276 transitions, 958 flow [2023-08-29 01:57:09,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=593, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=958, PETRI_PLACES=205, PETRI_TRANSITIONS=276} [2023-08-29 01:57:09,781 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 7 predicate places. [2023-08-29 01:57:09,781 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 276 transitions, 958 flow [2023-08-29 01:57:09,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 319.8333333333333) internal successors, (1919), 6 states have internal predecessors, (1919), 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) [2023-08-29 01:57:09,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:57:09,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:57:09,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 01:57:09,783 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting writer_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-08-29 01:57:09,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:57:09,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1984659804, now seen corresponding path program 1 times [2023-08-29 01:57:09,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:57:09,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033776445] [2023-08-29 01:57:09,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:57:09,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:57:09,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:57:09,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 01:57:09,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:57:09,985 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033776445] [2023-08-29 01:57:09,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033776445] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:57:09,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:57:09,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 01:57:09,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337938250] [2023-08-29 01:57:09,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:57:09,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 01:57:09,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:57:09,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 01:57:09,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 01:57:10,627 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 318 out of 593 [2023-08-29 01:57:10,629 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 276 transitions, 958 flow. Second operand has 6 states, 6 states have (on average 319.8333333333333) internal successors, (1919), 6 states have internal predecessors, (1919), 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) [2023-08-29 01:57:10,629 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:57:10,629 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 318 of 593 [2023-08-29 01:57:10,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 01:57:53,705 INFO L130 PetriNetUnfolder]: 230458/467017 cut-off events. [2023-08-29 01:57:53,705 INFO L131 PetriNetUnfolder]: For 142009/153804 co-relation queries the response was YES. [2023-08-29 01:57:54,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975829 conditions, 467017 events. 230458/467017 cut-off events. For 142009/153804 co-relation queries the response was YES. Maximal size of possible extension queue 6100. Compared 5796613 event pairs, 53859 based on Foata normal form. 2467/418584 useless extension candidates. Maximal degree in co-relation 975820. Up to 220109 conditions per place. [2023-08-29 01:57:56,521 INFO L137 encePairwiseOnDemand]: 557/593 looper letters, 294 selfloop transitions, 225 changer transitions 0/639 dead transitions. [2023-08-29 01:57:56,521 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 639 transitions, 3418 flow [2023-08-29 01:57:56,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 01:57:56,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 01:57:56,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2215 transitions. [2023-08-29 01:57:56,525 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6225407532321529 [2023-08-29 01:57:56,525 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2215 transitions. [2023-08-29 01:57:56,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2215 transitions. [2023-08-29 01:57:56,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 01:57:56,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2215 transitions. [2023-08-29 01:57:56,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 369.1666666666667) internal successors, (2215), 6 states have internal predecessors, (2215), 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) [2023-08-29 01:57:56,534 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 593.0) internal successors, (4151), 7 states have internal predecessors, (4151), 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) [2023-08-29 01:57:56,535 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 593.0) internal successors, (4151), 7 states have internal predecessors, (4151), 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) [2023-08-29 01:57:56,535 INFO L175 Difference]: Start difference. First operand has 205 places, 276 transitions, 958 flow. Second operand 6 states and 2215 transitions. [2023-08-29 01:57:56,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 639 transitions, 3418 flow [2023-08-29 01:57:56,860 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 639 transitions, 3418 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 01:57:56,865 INFO L231 Difference]: Finished difference. Result has 215 places, 500 transitions, 3120 flow [2023-08-29 01:57:56,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=593, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3120, PETRI_PLACES=215, PETRI_TRANSITIONS=500} [2023-08-29 01:57:56,866 INFO L281 CegarLoopForPetriNet]: 198 programPoint places, 17 predicate places. [2023-08-29 01:57:56,866 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 500 transitions, 3120 flow [2023-08-29 01:57:56,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 319.8333333333333) internal successors, (1919), 6 states have internal predecessors, (1919), 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) [2023-08-29 01:57:56,867 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 01:57:56,867 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 01:57:56,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 01:57:56,867 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting reader_twoErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2023-08-29 01:57:56,868 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 01:57:56,868 INFO L85 PathProgramCache]: Analyzing trace with hash 648442765, now seen corresponding path program 1 times [2023-08-29 01:57:56,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 01:57:56,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323197821] [2023-08-29 01:57:56,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 01:57:56,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 01:57:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 01:57:57,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 01:57:57,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 01:57:57,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323197821] [2023-08-29 01:57:57,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323197821] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 01:57:57,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 01:57:57,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 01:57:57,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332976104] [2023-08-29 01:57:57,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 01:57:57,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 01:57:57,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 01:57:57,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 01:57:57,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 01:57:57,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 331 out of 593 [2023-08-29 01:57:57,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 500 transitions, 3120 flow. Second operand has 6 states, 6 states have (on average 332.5) internal successors, (1995), 6 states have internal predecessors, (1995), 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) [2023-08-29 01:57:57,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 01:57:57,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 331 of 593 [2023-08-29 01:57:57,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand