./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/goblint-regression/28-race_reach_22-deref_read_racefree.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 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 18:19:56,361 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 18:19:56,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 18:19:56,399 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 18:19:56,401 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 18:19:56,404 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 18:19:56,406 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 18:19:56,415 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 18:19:56,417 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 18:19:56,421 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 18:19:56,422 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 18:19:56,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 18:19:56,425 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 18:19:56,426 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 18:19:56,428 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 18:19:56,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 18:19:56,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 18:19:56,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 18:19:56,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 18:19:56,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 18:19:56,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 18:19:56,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 18:19:56,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 18:19:56,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 18:19:56,451 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 18:19:56,451 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 18:19:56,452 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 18:19:56,453 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 18:19:56,454 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 18:19:56,454 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 18:19:56,455 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 18:19:56,460 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 18:19:56,461 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 18:19:56,462 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 18:19:56,462 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 18:19:56,463 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 18:19:56,464 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 18:19:56,464 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 18:19:56,464 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 18:19:56,465 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 18:19:56,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 18:19:56,467 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 18:19:56,486 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 18:19:56,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 18:19:56,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 18:19:56,488 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 18:19:56,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 18:19:56,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 18:19:56,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 18:19:56,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 18:19:56,489 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 18:19:56,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 18:19:56,489 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 18:19:56,489 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 18:19:56,489 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 18:19:56,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 18:19:56,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 18:19:56,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 18:19:56,490 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 18:19:56,490 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 18:19:56,490 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 18:19:56,490 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 18:19:56,490 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 18:19:56,490 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 18:19:56,491 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 18:19:56,491 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 18:19:56,491 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 18:19:56,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 18:19:56,491 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:19:56,491 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 18:19:56,492 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 18:19:56,492 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 18:19:56,492 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 18:19:56,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 18:19:56,492 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 18:19:56,493 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 18:19:56,493 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 18:19:56,493 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 18:19:56,493 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 18:19:56,493 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ce97f399f5ab540e05119d9433f4e1bfecfe892f8e87faddc6435387a55a4d6 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 18:19:56,793 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 18:19:56,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 18:19:56,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 18:19:56,810 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 18:19:56,811 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 18:19:56,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-08-29 18:19:57,898 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 18:19:58,098 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 18:19:58,098 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i [2023-08-29 18:19:58,109 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d4a4db1a/3cbcc55e156d41c094c3cf500a02be22/FLAGedf7f111b [2023-08-29 18:19:58,123 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d4a4db1a/3cbcc55e156d41c094c3cf500a02be22 [2023-08-29 18:19:58,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 18:19:58,126 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 18:19:58,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 18:19:58,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 18:19:58,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 18:19:58,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:19:58" (1/1) ... [2023-08-29 18:19:58,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7be1e5f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:19:58, skipping insertion in model container [2023-08-29 18:19:58,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 06:19:58" (1/1) ... [2023-08-29 18:19:58,144 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 18:19:58,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 18:19:58,507 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2023-08-29 18:19:58,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:19:58,550 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 18:19:58,586 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_22-deref_read_racefree.i[30176,30189] [2023-08-29 18:19:58,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 18:19:58,648 INFO L208 MainTranslator]: Completed translation [2023-08-29 18:19:58,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:19:58 WrapperNode [2023-08-29 18:19:58,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 18:19:58,650 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 18:19:58,650 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 18:19:58,650 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 18:19:58,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:19:58" (1/1) ... [2023-08-29 18:19:58,684 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:19:58" (1/1) ... [2023-08-29 18:19:58,711 INFO L138 Inliner]: procedures = 170, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2023-08-29 18:19:58,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 18:19:58,713 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 18:19:58,713 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 18:19:58,713 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 18:19:58,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:19:58" (1/1) ... [2023-08-29 18:19:58,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:19:58" (1/1) ... [2023-08-29 18:19:58,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:19:58" (1/1) ... [2023-08-29 18:19:58,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:19:58" (1/1) ... [2023-08-29 18:19:58,755 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:19:58" (1/1) ... [2023-08-29 18:19:58,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:19:58" (1/1) ... [2023-08-29 18:19:58,765 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:19:58" (1/1) ... [2023-08-29 18:19:58,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:19:58" (1/1) ... [2023-08-29 18:19:58,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 18:19:58,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 18:19:58,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 18:19:58,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 18:19:58,777 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:19:58" (1/1) ... [2023-08-29 18:19:58,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 18:19:58,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:19:58,800 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 18:19:58,822 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 18:19:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 18:19:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 18:19:58,832 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 18:19:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 18:19:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 18:19:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 18:19:58,833 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 18:19:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 18:19:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 18:19:58,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 18:19:58,834 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 18:19:58,835 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 18:19:58,982 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 18:19:58,984 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 18:19:59,270 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 18:19:59,280 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 18:19:59,281 INFO L302 CfgBuilder]: Removed 9 assume(true) statements. [2023-08-29 18:19:59,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:19:59 BoogieIcfgContainer [2023-08-29 18:19:59,282 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 18:19:59,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 18:19:59,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 18:19:59,286 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 18:19:59,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 06:19:58" (1/3) ... [2023-08-29 18:19:59,287 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bac88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:19:59, skipping insertion in model container [2023-08-29 18:19:59,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 06:19:58" (2/3) ... [2023-08-29 18:19:59,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50bac88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 06:19:59, skipping insertion in model container [2023-08-29 18:19:59,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 06:19:59" (3/3) ... [2023-08-29 18:19:59,295 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_22-deref_read_racefree.i [2023-08-29 18:19:59,301 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 18:19:59,309 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 18:19:59,309 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-29 18:19:59,309 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 18:19:59,387 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 18:19:59,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 150 transitions, 305 flow [2023-08-29 18:19:59,478 INFO L130 PetriNetUnfolder]: 14/197 cut-off events. [2023-08-29 18:19:59,478 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:19:59,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 197 events. 14/197 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 543 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 118. Up to 4 conditions per place. [2023-08-29 18:19:59,487 INFO L82 GeneralOperation]: Start removeDead. Operand has 143 places, 150 transitions, 305 flow [2023-08-29 18:19:59,491 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 143 places, 150 transitions, 305 flow [2023-08-29 18:19:59,496 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:19:59,510 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 143 places, 150 transitions, 305 flow [2023-08-29 18:19:59,514 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 143 places, 150 transitions, 305 flow [2023-08-29 18:19:59,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 143 places, 150 transitions, 305 flow [2023-08-29 18:19:59,564 INFO L130 PetriNetUnfolder]: 14/197 cut-off events. [2023-08-29 18:19:59,566 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:19:59,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 197 events. 14/197 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 543 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 118. Up to 4 conditions per place. [2023-08-29 18:19:59,573 INFO L119 LiptonReduction]: Number of co-enabled transitions 6996 [2023-08-29 18:20:02,439 INFO L134 LiptonReduction]: Checked pairs total: 27247 [2023-08-29 18:20:02,440 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-29 18:20:02,451 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:20:02,457 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;@2046bc4d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:20:02,457 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-08-29 18:20:02,459 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-29 18:20:02,459 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:20:02,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:20:02,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 18:20:02,460 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:20:02,464 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:20:02,464 INFO L85 PathProgramCache]: Analyzing trace with hash 17306, now seen corresponding path program 1 times [2023-08-29 18:20:02,471 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:20:02,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741716412] [2023-08-29 18:20:02,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:02,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:20:02,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:20:02,628 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 18:20:02,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:20:02,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741716412] [2023-08-29 18:20:02,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741716412] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:20:02,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:20:02,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 18:20:02,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800166895] [2023-08-29 18:20:02,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:20:02,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:20:02,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:20:02,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:20:02,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:20:02,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 251 [2023-08-29 18:20:02,670 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 70 transitions, 145 flow. Second operand has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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 18:20:02,670 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:20:02,670 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 251 [2023-08-29 18:20:02,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:20:02,786 INFO L130 PetriNetUnfolder]: 120/516 cut-off events. [2023-08-29 18:20:02,787 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:20:02,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 798 conditions, 516 events. 120/516 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2555 event pairs, 120 based on Foata normal form. 11/491 useless extension candidates. Maximal degree in co-relation 757. Up to 274 conditions per place. [2023-08-29 18:20:02,817 INFO L137 encePairwiseOnDemand]: 241/251 looper letters, 24 selfloop transitions, 0 changer transitions 0/60 dead transitions. [2023-08-29 18:20:02,817 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 60 transitions, 173 flow [2023-08-29 18:20:02,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:20:02,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:20:02,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 310 transitions. [2023-08-29 18:20:02,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6175298804780877 [2023-08-29 18:20:02,841 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 310 transitions. [2023-08-29 18:20:02,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 310 transitions. [2023-08-29 18:20:02,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:20:02,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 310 transitions. [2023-08-29 18:20:02,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 155.0) internal successors, (310), 2 states have internal predecessors, (310), 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 18:20:02,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 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 18:20:02,878 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 251.0) internal successors, (753), 3 states have internal predecessors, (753), 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 18:20:02,880 INFO L175 Difference]: Start difference. First operand has 65 places, 70 transitions, 145 flow. Second operand 2 states and 310 transitions. [2023-08-29 18:20:02,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 60 transitions, 173 flow [2023-08-29 18:20:02,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 60 transitions, 173 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:20:02,884 INFO L231 Difference]: Finished difference. Result has 64 places, 60 transitions, 125 flow [2023-08-29 18:20:02,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=125, PETRI_PLACES=64, PETRI_TRANSITIONS=60} [2023-08-29 18:20:02,892 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, -1 predicate places. [2023-08-29 18:20:02,892 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 60 transitions, 125 flow [2023-08-29 18:20:02,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 139.0) internal successors, (278), 2 states have internal predecessors, (278), 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 18:20:02,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:20:02,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 18:20:02,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 18:20:02,893 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:20:02,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:20:02,894 INFO L85 PathProgramCache]: Analyzing trace with hash 535475, now seen corresponding path program 1 times [2023-08-29 18:20:02,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:20:02,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209858901] [2023-08-29 18:20:02,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:02,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:20:02,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:20:02,952 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 18:20:02,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:20:02,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209858901] [2023-08-29 18:20:02,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209858901] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:20:02,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:20:02,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:20:02,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337994312] [2023-08-29 18:20:02,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:20:02,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:20:02,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:20:02,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:20:02,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:20:02,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 251 [2023-08-29 18:20:02,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 60 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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 18:20:02,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:20:02,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 251 [2023-08-29 18:20:02,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:20:03,042 INFO L130 PetriNetUnfolder]: 120/528 cut-off events. [2023-08-29 18:20:03,042 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:20:03,043 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801 conditions, 528 events. 120/528 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2598 event pairs, 99 based on Foata normal form. 0/491 useless extension candidates. Maximal degree in co-relation 797. Up to 251 conditions per place. [2023-08-29 18:20:03,045 INFO L137 encePairwiseOnDemand]: 248/251 looper letters, 35 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-29 18:20:03,045 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 73 transitions, 225 flow [2023-08-29 18:20:03,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:20:03,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:20:03,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-29 18:20:03,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5843293492695883 [2023-08-29 18:20:03,048 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-29 18:20:03,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-29 18:20:03,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:20:03,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-29 18:20:03,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 18:20:03,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 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 18:20:03,053 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 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 18:20:03,053 INFO L175 Difference]: Start difference. First operand has 64 places, 60 transitions, 125 flow. Second operand 3 states and 440 transitions. [2023-08-29 18:20:03,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 73 transitions, 225 flow [2023-08-29 18:20:03,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 73 transitions, 225 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:20:03,056 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 133 flow [2023-08-29 18:20:03,056 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=133, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-08-29 18:20:03,057 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 2 predicate places. [2023-08-29 18:20:03,057 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 133 flow [2023-08-29 18:20:03,057 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.66666666666666) internal successors, (404), 3 states have internal predecessors, (404), 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 18:20:03,057 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:20:03,058 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 18:20:03,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 18:20:03,058 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:20:03,058 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:20:03,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1201333518, now seen corresponding path program 1 times [2023-08-29 18:20:03,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:20:03,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541817289] [2023-08-29 18:20:03,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:03,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:20:03,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:20:03,167 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:20:03,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:20:03,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541817289] [2023-08-29 18:20:03,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541817289] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:20:03,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055058066] [2023-08-29 18:20:03,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:03,168 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:20:03,168 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:20:03,193 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:20:03,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 18:20:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:20:03,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:20:03,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:20:03,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 18:20:03,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:20:03,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1055058066] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:20:03,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:20:03,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 18:20:03,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237744224] [2023-08-29 18:20:03,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:20:03,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:20:03,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:20:03,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:20:03,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:20:03,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 251 [2023-08-29 18:20:03,297 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 18:20:03,297 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:20:03,297 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 251 [2023-08-29 18:20:03,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:20:03,395 INFO L130 PetriNetUnfolder]: 160/593 cut-off events. [2023-08-29 18:20:03,408 INFO L131 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2023-08-29 18:20:03,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1005 conditions, 593 events. 160/593 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2857 event pairs, 102 based on Foata normal form. 0/582 useless extension candidates. Maximal degree in co-relation 999. Up to 334 conditions per place. [2023-08-29 18:20:03,411 INFO L137 encePairwiseOnDemand]: 246/251 looper letters, 32 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-29 18:20:03,412 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 63 transitions, 212 flow [2023-08-29 18:20:03,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:20:03,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:20:03,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-29 18:20:03,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630810092961488 [2023-08-29 18:20:03,414 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-29 18:20:03,414 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-29 18:20:03,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:20:03,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-29 18:20:03,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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 18:20:03,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 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 18:20:03,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 251.0) internal successors, (1004), 4 states have internal predecessors, (1004), 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 18:20:03,418 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 133 flow. Second operand 3 states and 424 transitions. [2023-08-29 18:20:03,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 63 transitions, 212 flow [2023-08-29 18:20:03,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 206 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 18:20:03,435 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 139 flow [2023-08-29 18:20:03,435 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=251, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=139, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-08-29 18:20:03,436 INFO L281 CegarLoopForPetriNet]: 65 programPoint places, 0 predicate places. [2023-08-29 18:20:03,436 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 139 flow [2023-08-29 18:20:03,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 18:20:03,436 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:20:03,437 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 18:20:03,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 18:20:03,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:20:03,638 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 14 more)] === [2023-08-29 18:20:03,638 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:20:03,638 INFO L85 PathProgramCache]: Analyzing trace with hash -1201332656, now seen corresponding path program 1 times [2023-08-29 18:20:03,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:20:03,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991263185] [2023-08-29 18:20:03,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:03,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:20:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:20:03,663 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:20:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:20:03,693 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:20:03,693 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:20:03,694 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-08-29 18:20:03,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-08-29 18:20:03,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-08-29 18:20:03,696 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-08-29 18:20:03,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-08-29 18:20:03,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-08-29 18:20:03,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-08-29 18:20:03,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-08-29 18:20:03,697 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-08-29 18:20:03,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-08-29 18:20:03,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-08-29 18:20:03,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-08-29 18:20:03,698 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-08-29 18:20:03,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-08-29 18:20:03,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-08-29 18:20:03,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-08-29 18:20:03,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-08-29 18:20:03,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-29 18:20:03,700 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 18:20:03,702 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:20:03,702 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 18:20:03,726 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 18:20:03,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 217 transitions, 446 flow [2023-08-29 18:20:03,761 INFO L130 PetriNetUnfolder]: 24/316 cut-off events. [2023-08-29 18:20:03,762 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 18:20:03,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 316 events. 24/316 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1184 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 198. Up to 6 conditions per place. [2023-08-29 18:20:03,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 206 places, 217 transitions, 446 flow [2023-08-29 18:20:03,766 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 206 places, 217 transitions, 446 flow [2023-08-29 18:20:03,766 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:20:03,767 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 206 places, 217 transitions, 446 flow [2023-08-29 18:20:03,767 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 206 places, 217 transitions, 446 flow [2023-08-29 18:20:03,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 206 places, 217 transitions, 446 flow [2023-08-29 18:20:03,798 INFO L130 PetriNetUnfolder]: 24/316 cut-off events. [2023-08-29 18:20:03,798 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 18:20:03,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 326 conditions, 316 events. 24/316 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1184 event pairs, 0 based on Foata normal form. 0/265 useless extension candidates. Maximal degree in co-relation 198. Up to 6 conditions per place. [2023-08-29 18:20:03,817 INFO L119 LiptonReduction]: Number of co-enabled transitions 22836 [2023-08-29 18:20:06,531 INFO L134 LiptonReduction]: Checked pairs total: 108422 [2023-08-29 18:20:06,532 INFO L136 LiptonReduction]: Total number of compositions: 124 [2023-08-29 18:20:06,534 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:20:06,535 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;@2046bc4d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:20:06,535 INFO L358 AbstractCegarLoop]: Starting to check reachability of 23 error locations. [2023-08-29 18:20:06,536 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-29 18:20:06,536 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:20:06,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:20:06,537 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 18:20:06,537 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 18:20:06,537 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:20:06,537 INFO L85 PathProgramCache]: Analyzing trace with hash 30362, now seen corresponding path program 1 times [2023-08-29 18:20:06,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:20:06,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32514610] [2023-08-29 18:20:06,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:06,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:20:06,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:20:06,563 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 18:20:06,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:20:06,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32514610] [2023-08-29 18:20:06,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32514610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:20:06,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:20:06,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 18:20:06,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068061584] [2023-08-29 18:20:06,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:20:06,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:20:06,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:20:06,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:20:06,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:20:06,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 341 [2023-08-29 18:20:06,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 119 transitions, 250 flow. Second operand has 2 states, 2 states have (on average 199.0) internal successors, (398), 2 states have internal predecessors, (398), 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 18:20:06,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:20:06,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 341 [2023-08-29 18:20:06,573 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:20:07,489 INFO L130 PetriNetUnfolder]: 3396/9137 cut-off events. [2023-08-29 18:20:07,490 INFO L131 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2023-08-29 18:20:07,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14598 conditions, 9137 events. 3396/9137 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 83622 event pairs, 3396 based on Foata normal form. 747/9193 useless extension candidates. Maximal degree in co-relation 10340. Up to 5409 conditions per place. [2023-08-29 18:20:07,559 INFO L137 encePairwiseOnDemand]: 325/341 looper letters, 37 selfloop transitions, 0 changer transitions 0/103 dead transitions. [2023-08-29 18:20:07,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 103 transitions, 292 flow [2023-08-29 18:20:07,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:20:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:20:07,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 449 transitions. [2023-08-29 18:20:07,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.658357771260997 [2023-08-29 18:20:07,561 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 449 transitions. [2023-08-29 18:20:07,562 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 449 transitions. [2023-08-29 18:20:07,562 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:20:07,563 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 449 transitions. [2023-08-29 18:20:07,564 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 224.5) internal successors, (449), 2 states have internal predecessors, (449), 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 18:20:07,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 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 18:20:07,567 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 341.0) internal successors, (1023), 3 states have internal predecessors, (1023), 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 18:20:07,567 INFO L175 Difference]: Start difference. First operand has 110 places, 119 transitions, 250 flow. Second operand 2 states and 449 transitions. [2023-08-29 18:20:07,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 103 transitions, 292 flow [2023-08-29 18:20:07,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 103 transitions, 290 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-29 18:20:07,572 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 216 flow [2023-08-29 18:20:07,573 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=216, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2023-08-29 18:20:07,574 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -1 predicate places. [2023-08-29 18:20:07,574 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 216 flow [2023-08-29 18:20:07,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 199.0) internal successors, (398), 2 states have internal predecessors, (398), 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 18:20:07,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:20:07,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 18:20:07,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 18:20:07,578 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 18:20:07,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:20:07,578 INFO L85 PathProgramCache]: Analyzing trace with hash 940250, now seen corresponding path program 1 times [2023-08-29 18:20:07,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:20:07,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562902287] [2023-08-29 18:20:07,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:07,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:20:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:20:07,616 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 18:20:07,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:20:07,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562902287] [2023-08-29 18:20:07,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562902287] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:20:07,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:20:07,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:20:07,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513115067] [2023-08-29 18:20:07,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:20:07,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:20:07,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:20:07,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:20:07,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:20:07,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 341 [2023-08-29 18:20:07,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 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 18:20:07,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:20:07,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 341 [2023-08-29 18:20:07,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:20:08,465 INFO L130 PetriNetUnfolder]: 3396/9096 cut-off events. [2023-08-29 18:20:08,466 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-08-29 18:20:08,479 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14555 conditions, 9096 events. 3396/9096 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 231. Compared 83972 event pairs, 1560 based on Foata normal form. 0/8533 useless extension candidates. Maximal degree in co-relation 14550. Up to 5386 conditions per place. [2023-08-29 18:20:08,509 INFO L137 encePairwiseOnDemand]: 338/341 looper letters, 49 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2023-08-29 18:20:08,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 117 transitions, 346 flow [2023-08-29 18:20:08,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:20:08,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:20:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 634 transitions. [2023-08-29 18:20:08,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6197458455522972 [2023-08-29 18:20:08,512 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 634 transitions. [2023-08-29 18:20:08,512 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 634 transitions. [2023-08-29 18:20:08,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:20:08,514 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 634 transitions. [2023-08-29 18:20:08,515 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 211.33333333333334) internal successors, (634), 3 states have internal predecessors, (634), 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 18:20:08,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 18:20:08,518 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 18:20:08,518 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 216 flow. Second operand 3 states and 634 transitions. [2023-08-29 18:20:08,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 117 transitions, 346 flow [2023-08-29 18:20:08,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 117 transitions, 346 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:20:08,524 INFO L231 Difference]: Finished difference. Result has 112 places, 104 transitions, 228 flow [2023-08-29 18:20:08,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=228, PETRI_PLACES=112, PETRI_TRANSITIONS=104} [2023-08-29 18:20:08,529 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, 2 predicate places. [2023-08-29 18:20:08,529 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 104 transitions, 228 flow [2023-08-29 18:20:08,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 194.66666666666666) internal successors, (584), 3 states have internal predecessors, (584), 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 18:20:08,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:20:08,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:20:08,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 18:20:08,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 18:20:08,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:20:08,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1777189005, now seen corresponding path program 1 times [2023-08-29 18:20:08,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:20:08,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147573174] [2023-08-29 18:20:08,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:08,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:20:08,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:20:08,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:20:08,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:20:08,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147573174] [2023-08-29 18:20:08,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147573174] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:20:08,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [374658265] [2023-08-29 18:20:08,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:08,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:20:08,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:20:08,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:20:08,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 18:20:08,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:20:08,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:20:08,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:20:08,660 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 18:20:08,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:20:08,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [374658265] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:20:08,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:20:08,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 18:20:08,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930745698] [2023-08-29 18:20:08,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:20:08,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:20:08,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:20:08,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:20:08,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:20:08,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 183 out of 341 [2023-08-29 18:20:08,683 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 104 transitions, 228 flow. Second operand has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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 18:20:08,683 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:20:08,683 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 183 of 341 [2023-08-29 18:20:08,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:20:09,678 INFO L130 PetriNetUnfolder]: 4854/11764 cut-off events. [2023-08-29 18:20:09,678 INFO L131 PetriNetUnfolder]: For 550/550 co-relation queries the response was YES. [2023-08-29 18:20:09,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20007 conditions, 11764 events. 4854/11764 cut-off events. For 550/550 co-relation queries the response was YES. Maximal size of possible extension queue 279. Compared 104128 event pairs, 3568 based on Foata normal form. 0/11434 useless extension candidates. Maximal degree in co-relation 20000. Up to 7616 conditions per place. [2023-08-29 18:20:09,735 INFO L137 encePairwiseOnDemand]: 333/341 looper letters, 50 selfloop transitions, 3 changer transitions 0/109 dead transitions. [2023-08-29 18:20:09,735 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 109 transitions, 356 flow [2023-08-29 18:20:09,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:20:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:20:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 605 transitions. [2023-08-29 18:20:09,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913978494623656 [2023-08-29 18:20:09,737 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 605 transitions. [2023-08-29 18:20:09,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 605 transitions. [2023-08-29 18:20:09,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:20:09,738 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 605 transitions. [2023-08-29 18:20:09,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.66666666666666) internal successors, (605), 3 states have internal predecessors, (605), 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 18:20:09,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 18:20:09,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 341.0) internal successors, (1364), 4 states have internal predecessors, (1364), 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 18:20:09,743 INFO L175 Difference]: Start difference. First operand has 112 places, 104 transitions, 228 flow. Second operand 3 states and 605 transitions. [2023-08-29 18:20:09,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 109 transitions, 356 flow [2023-08-29 18:20:09,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 109 transitions, 353 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:20:09,747 INFO L231 Difference]: Finished difference. Result has 109 places, 102 transitions, 239 flow [2023-08-29 18:20:09,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=341, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=239, PETRI_PLACES=109, PETRI_TRANSITIONS=102} [2023-08-29 18:20:09,748 INFO L281 CegarLoopForPetriNet]: 110 programPoint places, -1 predicate places. [2023-08-29 18:20:09,749 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 102 transitions, 239 flow [2023-08-29 18:20:09,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.0) internal successors, (555), 3 states have internal predecessors, (555), 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 18:20:09,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:20:09,750 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 18:20:09,754 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 18:20:09,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-08-29 18:20:09,954 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-08-29 18:20:09,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:20:09,955 INFO L85 PathProgramCache]: Analyzing trace with hash -2119552388, now seen corresponding path program 1 times [2023-08-29 18:20:09,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:20:09,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411976098] [2023-08-29 18:20:09,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:09,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:20:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:20:09,976 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 18:20:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 18:20:09,994 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 18:20:09,996 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 18:20:09,998 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 23 remaining) [2023-08-29 18:20:10,000 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (21 of 23 remaining) [2023-08-29 18:20:10,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (20 of 23 remaining) [2023-08-29 18:20:10,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (19 of 23 remaining) [2023-08-29 18:20:10,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (18 of 23 remaining) [2023-08-29 18:20:10,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (17 of 23 remaining) [2023-08-29 18:20:10,001 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (16 of 23 remaining) [2023-08-29 18:20:10,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (15 of 23 remaining) [2023-08-29 18:20:10,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 23 remaining) [2023-08-29 18:20:10,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (13 of 23 remaining) [2023-08-29 18:20:10,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (12 of 23 remaining) [2023-08-29 18:20:10,002 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (11 of 23 remaining) [2023-08-29 18:20:10,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 23 remaining) [2023-08-29 18:20:10,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (9 of 23 remaining) [2023-08-29 18:20:10,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (8 of 23 remaining) [2023-08-29 18:20:10,003 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 23 remaining) [2023-08-29 18:20:10,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (6 of 23 remaining) [2023-08-29 18:20:10,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONDATA_RACE (5 of 23 remaining) [2023-08-29 18:20:10,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONDATA_RACE (4 of 23 remaining) [2023-08-29 18:20:10,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONDATA_RACE (3 of 23 remaining) [2023-08-29 18:20:10,004 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 23 remaining) [2023-08-29 18:20:10,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 23 remaining) [2023-08-29 18:20:10,005 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONDATA_RACE (0 of 23 remaining) [2023-08-29 18:20:10,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 18:20:10,005 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-29 18:20:10,006 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 18:20:10,007 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 18:20:10,045 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 18:20:10,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 284 transitions, 589 flow [2023-08-29 18:20:10,115 INFO L130 PetriNetUnfolder]: 34/435 cut-off events. [2023-08-29 18:20:10,115 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 18:20:10,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 435 events. 34/435 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1842 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 320. Up to 8 conditions per place. [2023-08-29 18:20:10,120 INFO L82 GeneralOperation]: Start removeDead. Operand has 269 places, 284 transitions, 589 flow [2023-08-29 18:20:10,123 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 269 places, 284 transitions, 589 flow [2023-08-29 18:20:10,123 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 18:20:10,124 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 269 places, 284 transitions, 589 flow [2023-08-29 18:20:10,124 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 269 places, 284 transitions, 589 flow [2023-08-29 18:20:10,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 269 places, 284 transitions, 589 flow [2023-08-29 18:20:10,188 INFO L130 PetriNetUnfolder]: 34/435 cut-off events. [2023-08-29 18:20:10,188 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2023-08-29 18:20:10,192 INFO L83 FinitePrefix]: Finished finitePrefix Result has 451 conditions, 435 events. 34/435 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1842 event pairs, 0 based on Foata normal form. 0/363 useless extension candidates. Maximal degree in co-relation 320. Up to 8 conditions per place. [2023-08-29 18:20:10,213 INFO L119 LiptonReduction]: Number of co-enabled transitions 47520 [2023-08-29 18:20:13,132 INFO L134 LiptonReduction]: Checked pairs total: 247557 [2023-08-29 18:20:13,132 INFO L136 LiptonReduction]: Total number of compositions: 147 [2023-08-29 18:20:13,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 18:20:13,134 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;@2046bc4d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 18:20:13,134 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-08-29 18:20:13,136 INFO L130 PetriNetUnfolder]: 0/3 cut-off events. [2023-08-29 18:20:13,136 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 18:20:13,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:20:13,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 18:20:13,136 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 18:20:13,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:20:13,137 INFO L85 PathProgramCache]: Analyzing trace with hash 46298, now seen corresponding path program 1 times [2023-08-29 18:20:13,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:20:13,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981091598] [2023-08-29 18:20:13,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:13,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:20:13,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:20:13,151 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 18:20:13,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:20:13,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981091598] [2023-08-29 18:20:13,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981091598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:20:13,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:20:13,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 18:20:13,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584853182] [2023-08-29 18:20:13,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:20:13,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 18:20:13,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:20:13,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 18:20:13,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 18:20:13,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 258 out of 431 [2023-08-29 18:20:13,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 167 transitions, 355 flow. Second operand has 2 states, 2 states have (on average 259.0) internal successors, (518), 2 states have internal predecessors, (518), 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 18:20:13,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:20:13,156 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 258 of 431 [2023-08-29 18:20:13,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:20:24,362 INFO L130 PetriNetUnfolder]: 68292/139119 cut-off events. [2023-08-29 18:20:24,363 INFO L131 PetriNetUnfolder]: For 1087/1087 co-relation queries the response was YES. [2023-08-29 18:20:24,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234360 conditions, 139119 events. 68292/139119 cut-off events. For 1087/1087 co-relation queries the response was YES. Maximal size of possible extension queue 2871. Compared 1602274 event pairs, 68292 based on Foata normal form. 9729/138781 useless extension candidates. Maximal degree in co-relation 125943. Up to 94472 conditions per place. [2023-08-29 18:20:25,232 INFO L137 encePairwiseOnDemand]: 409/431 looper letters, 50 selfloop transitions, 0 changer transitions 0/145 dead transitions. [2023-08-29 18:20:25,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 145 transitions, 411 flow [2023-08-29 18:20:25,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 18:20:25,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 18:20:25,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 588 transitions. [2023-08-29 18:20:25,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6821345707656613 [2023-08-29 18:20:25,236 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 588 transitions. [2023-08-29 18:20:25,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 588 transitions. [2023-08-29 18:20:25,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:20:25,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 588 transitions. [2023-08-29 18:20:25,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 294.0) internal successors, (588), 2 states have internal predecessors, (588), 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 18:20:25,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 431.0) internal successors, (1293), 3 states have internal predecessors, (1293), 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 18:20:25,241 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 431.0) internal successors, (1293), 3 states have internal predecessors, (1293), 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 18:20:25,241 INFO L175 Difference]: Start difference. First operand has 154 places, 167 transitions, 355 flow. Second operand 2 states and 588 transitions. [2023-08-29 18:20:25,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 145 transitions, 411 flow [2023-08-29 18:20:25,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 145 transitions, 405 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-29 18:20:25,246 INFO L231 Difference]: Finished difference. Result has 153 places, 145 transitions, 305 flow [2023-08-29 18:20:25,246 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=431, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=305, PETRI_PLACES=153, PETRI_TRANSITIONS=145} [2023-08-29 18:20:25,247 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, -1 predicate places. [2023-08-29 18:20:25,247 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 145 transitions, 305 flow [2023-08-29 18:20:25,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 259.0) internal successors, (518), 2 states have internal predecessors, (518), 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 18:20:25,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:20:25,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-29 18:20:25,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-29 18:20:25,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 18:20:25,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:20:25,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1434364, now seen corresponding path program 1 times [2023-08-29 18:20:25,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:20:25,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354904613] [2023-08-29 18:20:25,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:25,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:20:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:20:25,271 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 18:20:25,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:20:25,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354904613] [2023-08-29 18:20:25,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354904613] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:20:25,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:20:25,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 18:20:25,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536327331] [2023-08-29 18:20:25,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:20:25,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:20:25,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:20:25,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:20:25,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 18:20:25,284 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 254 out of 431 [2023-08-29 18:20:25,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 145 transitions, 305 flow. Second operand has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 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 18:20:25,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:20:25,286 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 254 of 431 [2023-08-29 18:20:25,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:20:36,190 INFO L130 PetriNetUnfolder]: 68292/144634 cut-off events. [2023-08-29 18:20:36,191 INFO L131 PetriNetUnfolder]: For 494/494 co-relation queries the response was YES. [2023-08-29 18:20:36,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239703 conditions, 144634 events. 68292/144634 cut-off events. For 494/494 co-relation queries the response was YES. Maximal size of possible extension queue 2979. Compared 1728573 event pairs, 44148 based on Foata normal form. 0/135058 useless extension candidates. Maximal degree in co-relation 239697. Up to 94449 conditions per place. [2023-08-29 18:20:36,936 INFO L137 encePairwiseOnDemand]: 428/431 looper letters, 62 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2023-08-29 18:20:36,936 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 159 transitions, 461 flow [2023-08-29 18:20:36,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:20:36,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:20:36,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 827 transitions. [2023-08-29 18:20:36,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6395978344934261 [2023-08-29 18:20:36,939 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 827 transitions. [2023-08-29 18:20:36,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 827 transitions. [2023-08-29 18:20:36,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:20:36,942 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 827 transitions. [2023-08-29 18:20:36,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 275.6666666666667) internal successors, (827), 3 states have internal predecessors, (827), 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 18:20:36,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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 18:20:36,948 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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 18:20:36,949 INFO L175 Difference]: Start difference. First operand has 153 places, 145 transitions, 305 flow. Second operand 3 states and 827 transitions. [2023-08-29 18:20:36,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 159 transitions, 461 flow [2023-08-29 18:20:36,950 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 159 transitions, 461 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 18:20:36,952 INFO L231 Difference]: Finished difference. Result has 156 places, 146 transitions, 317 flow [2023-08-29 18:20:36,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=431, PETRI_DIFFERENCE_MINUEND_FLOW=305, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=156, PETRI_TRANSITIONS=146} [2023-08-29 18:20:36,953 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, 2 predicate places. [2023-08-29 18:20:36,953 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 146 transitions, 317 flow [2023-08-29 18:20:36,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 254.66666666666666) internal successors, (764), 3 states have internal predecessors, (764), 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 18:20:36,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:20:36,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:20:36,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-29 18:20:36,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 18:20:36,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:20:36,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1071138228, now seen corresponding path program 1 times [2023-08-29 18:20:36,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:20:36,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812740803] [2023-08-29 18:20:36,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:36,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:20:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:20:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 18:20:36,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:20:36,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812740803] [2023-08-29 18:20:36,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812740803] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 18:20:36,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293425726] [2023-08-29 18:20:36,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:36,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:20:36,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 18:20:36,988 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 18:20:36,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 18:20:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:20:37,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 18:20:37,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 18:20:37,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-29 18:20:37,057 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 18:20:37,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293425726] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:20:37,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 18:20:37,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 18:20:37,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180171260] [2023-08-29 18:20:37,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:20:37,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 18:20:37,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:20:37,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 18:20:37,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 18:20:37,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 237 out of 431 [2023-08-29 18:20:37,079 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 146 transitions, 317 flow. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 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 18:20:37,079 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:20:37,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 237 of 431 [2023-08-29 18:20:37,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 18:20:55,082 INFO L130 PetriNetUnfolder]: 136251/246669 cut-off events. [2023-08-29 18:20:55,082 INFO L131 PetriNetUnfolder]: For 10129/10129 co-relation queries the response was YES. [2023-08-29 18:20:55,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 444139 conditions, 246669 events. 136251/246669 cut-off events. For 10129/10129 co-relation queries the response was YES. Maximal size of possible extension queue 4433. Compared 2660279 event pairs, 109105 based on Foata normal form. 0/238327 useless extension candidates. Maximal degree in co-relation 444131. Up to 187158 conditions per place. [2023-08-29 18:20:56,550 INFO L137 encePairwiseOnDemand]: 420/431 looper letters, 70 selfloop transitions, 4 changer transitions 0/152 dead transitions. [2023-08-29 18:20:56,550 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 152 transitions, 494 flow [2023-08-29 18:20:56,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 18:20:56,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 18:20:56,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 790 transitions. [2023-08-29 18:20:56,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6109822119102861 [2023-08-29 18:20:56,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 790 transitions. [2023-08-29 18:20:56,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 790 transitions. [2023-08-29 18:20:56,553 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 18:20:56,553 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 790 transitions. [2023-08-29 18:20:56,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 263.3333333333333) internal successors, (790), 3 states have internal predecessors, (790), 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 18:20:56,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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 18:20:56,557 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 431.0) internal successors, (1724), 4 states have internal predecessors, (1724), 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 18:20:56,557 INFO L175 Difference]: Start difference. First operand has 156 places, 146 transitions, 317 flow. Second operand 3 states and 790 transitions. [2023-08-29 18:20:56,557 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 152 transitions, 494 flow [2023-08-29 18:20:56,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 152 transitions, 491 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 18:20:56,561 INFO L231 Difference]: Finished difference. Result has 151 places, 143 transitions, 331 flow [2023-08-29 18:20:56,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=431, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=331, PETRI_PLACES=151, PETRI_TRANSITIONS=143} [2023-08-29 18:20:56,561 INFO L281 CegarLoopForPetriNet]: 154 programPoint places, -3 predicate places. [2023-08-29 18:20:56,562 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 143 transitions, 331 flow [2023-08-29 18:20:56,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 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 18:20:56,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 18:20:56,562 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 18:20:56,571 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-29 18:20:56,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 18:20:56,767 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 26 more)] === [2023-08-29 18:20:56,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 18:20:56,767 INFO L85 PathProgramCache]: Analyzing trace with hash -123076117, now seen corresponding path program 1 times [2023-08-29 18:20:56,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 18:20:56,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292209833] [2023-08-29 18:20:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 18:20:56,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 18:20:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 18:20:57,045 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 18:20:57,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 18:20:57,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292209833] [2023-08-29 18:20:57,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292209833] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 18:20:57,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 18:20:57,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 18:20:57,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438452961] [2023-08-29 18:20:57,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 18:20:57,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 18:20:57,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 18:20:57,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 18:20:57,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 18:20:57,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 431 [2023-08-29 18:20:57,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 143 transitions, 331 flow. Second operand has 6 states, 6 states have (on average 192.66666666666666) internal successors, (1156), 6 states have internal predecessors, (1156), 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 18:20:57,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 18:20:57,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 431 [2023-08-29 18:20:57,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand