./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 02:55:15,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 02:55:15,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 02:55:15,701 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 02:55:15,701 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 02:55:15,702 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 02:55:15,703 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 02:55:15,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 02:55:15,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 02:55:15,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 02:55:15,710 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 02:55:15,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 02:55:15,714 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 02:55:15,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 02:55:15,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 02:55:15,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 02:55:15,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 02:55:15,719 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 02:55:15,721 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 02:55:15,723 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 02:55:15,726 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 02:55:15,729 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 02:55:15,730 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 02:55:15,731 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 02:55:15,733 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 02:55:15,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 02:55:15,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 02:55:15,738 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 02:55:15,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 02:55:15,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 02:55:15,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 02:55:15,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 02:55:15,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 02:55:15,745 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 02:55:15,746 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 02:55:15,746 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 02:55:15,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 02:55:15,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 02:55:15,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 02:55:15,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 02:55:15,749 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 02:55:15,750 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 02:55:15,781 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 02:55:15,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 02:55:15,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 02:55:15,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 02:55:15,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 02:55:15,783 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 02:55:15,784 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 02:55:15,784 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 02:55:15,784 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 02:55:15,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 02:55:15,785 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 02:55:15,785 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 02:55:15,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 02:55:15,786 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 02:55:15,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 02:55:15,786 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 02:55:15,786 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 02:55:15,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 02:55:15,787 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 02:55:15,787 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 02:55:15,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 02:55:15,787 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 02:55:15,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 02:55:15,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 02:55:15,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 02:55:15,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 02:55:15,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:55:15,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 02:55:15,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 02:55:15,789 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 02:55:15,789 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 02:55:15,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 02:55:15,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 02:55:15,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 02:55:15,790 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 02:55:15,790 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 02:55:15,790 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 02:55:15,790 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3465c34fa1c26a5c7a3494350123ab41e5828c33cb08ac3f67b81737d460e559 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 02:55:16,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 02:55:16,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 02:55:16,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 02:55:16,153 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 02:55:16,153 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 02:55:16,154 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-08-29 02:55:17,489 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 02:55:17,741 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 02:55:17,742 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_61-invariant_racing.i [2023-08-29 02:55:17,755 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a117e96c/01550843b148485ea6501e55df0f1b03/FLAG6787bbbd9 [2023-08-29 02:55:17,770 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a117e96c/01550843b148485ea6501e55df0f1b03 [2023-08-29 02:55:17,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 02:55:17,773 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 02:55:17,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 02:55:17,774 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 02:55:17,777 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 02:55:17,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:55:17" (1/1) ... [2023-08-29 02:55:17,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f69aafb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:17, skipping insertion in model container [2023-08-29 02:55:17,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 02:55:17" (1/1) ... [2023-08-29 02:55:17,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 02:55:17,836 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 02:55:18,150 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_61-invariant_racing.i[30176,30189] [2023-08-29 02:55:18,177 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:55:18,194 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 02:55:18,299 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_61-invariant_racing.i[30176,30189] [2023-08-29 02:55:18,310 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 02:55:18,349 INFO L208 MainTranslator]: Completed translation [2023-08-29 02:55:18,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:18 WrapperNode [2023-08-29 02:55:18,350 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 02:55:18,351 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 02:55:18,351 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 02:55:18,351 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 02:55:18,357 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:18" (1/1) ... [2023-08-29 02:55:18,384 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:18" (1/1) ... [2023-08-29 02:55:18,417 INFO L138 Inliner]: procedures = 170, calls = 32, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 115 [2023-08-29 02:55:18,417 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 02:55:18,419 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 02:55:18,419 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 02:55:18,419 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 02:55:18,427 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:18" (1/1) ... [2023-08-29 02:55:18,428 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:18" (1/1) ... [2023-08-29 02:55:18,444 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:18" (1/1) ... [2023-08-29 02:55:18,444 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:18" (1/1) ... [2023-08-29 02:55:18,456 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:18" (1/1) ... [2023-08-29 02:55:18,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:18" (1/1) ... [2023-08-29 02:55:18,464 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:18" (1/1) ... [2023-08-29 02:55:18,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:18" (1/1) ... [2023-08-29 02:55:18,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 02:55:18,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 02:55:18,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 02:55:18,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 02:55:18,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:18" (1/1) ... [2023-08-29 02:55:18,479 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 02:55:18,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:55:18,510 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 02:55:18,521 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 02:55:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 02:55:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 02:55:18,549 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 02:55:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 02:55:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 02:55:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 02:55:18,550 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 02:55:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 02:55:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 02:55:18,550 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 02:55:18,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 02:55:18,552 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 02:55:18,659 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 02:55:18,661 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 02:55:18,975 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 02:55:18,982 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 02:55:18,983 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-29 02:55:18,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:55:18 BoogieIcfgContainer [2023-08-29 02:55:18,985 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 02:55:18,986 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 02:55:18,986 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 02:55:18,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 02:55:18,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 02:55:17" (1/3) ... [2023-08-29 02:55:18,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff17805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:55:18, skipping insertion in model container [2023-08-29 02:55:18,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 02:55:18" (2/3) ... [2023-08-29 02:55:18,990 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ff17805 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 02:55:18, skipping insertion in model container [2023-08-29 02:55:18,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 02:55:18" (3/3) ... [2023-08-29 02:55:18,992 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_61-invariant_racing.i [2023-08-29 02:55:19,000 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 02:55:19,008 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 02:55:19,008 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2023-08-29 02:55:19,009 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 02:55:19,112 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-29 02:55:19,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 167 transitions, 342 flow [2023-08-29 02:55:19,230 INFO L130 PetriNetUnfolder]: 30/246 cut-off events. [2023-08-29 02:55:19,230 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:55:19,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 30/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 951 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2023-08-29 02:55:19,241 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 167 transitions, 342 flow [2023-08-29 02:55:19,247 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 167 transitions, 342 flow [2023-08-29 02:55:19,250 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:55:19,258 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 167 transitions, 342 flow [2023-08-29 02:55:19,261 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 167 transitions, 342 flow [2023-08-29 02:55:19,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 167 transitions, 342 flow [2023-08-29 02:55:19,302 INFO L130 PetriNetUnfolder]: 30/246 cut-off events. [2023-08-29 02:55:19,302 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:55:19,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 30/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 951 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2023-08-29 02:55:19,308 INFO L119 LiptonReduction]: Number of co-enabled transitions 8500 [2023-08-29 02:55:21,724 INFO L134 LiptonReduction]: Checked pairs total: 35928 [2023-08-29 02:55:21,725 INFO L136 LiptonReduction]: Total number of compositions: 101 [2023-08-29 02:55:21,737 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:55:21,743 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;@38db694e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:55:21,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-29 02:55:21,748 INFO L130 PetriNetUnfolder]: 2/20 cut-off events. [2023-08-29 02:55:21,748 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:21,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:21,749 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 02:55:21,749 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:55:21,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:21,754 INFO L85 PathProgramCache]: Analyzing trace with hash 563633600, now seen corresponding path program 1 times [2023-08-29 02:55:21,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:21,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72781400] [2023-08-29 02:55:21,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:21,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:21,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:21,933 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 02:55:21,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:21,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72781400] [2023-08-29 02:55:21,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72781400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:21,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:21,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:21,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578130975] [2023-08-29 02:55:21,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:21,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:21,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:21,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:21,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:21,993 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 268 [2023-08-29 02:55:21,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 180 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 02:55:21,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:21,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 268 [2023-08-29 02:55:21,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:22,134 INFO L130 PetriNetUnfolder]: 229/684 cut-off events. [2023-08-29 02:55:22,135 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:55:22,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1172 conditions, 684 events. 229/684 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3718 event pairs, 162 based on Foata normal form. 66/657 useless extension candidates. Maximal degree in co-relation 1138. Up to 461 conditions per place. [2023-08-29 02:55:22,141 INFO L137 encePairwiseOnDemand]: 249/268 looper letters, 44 selfloop transitions, 2 changer transitions 2/83 dead transitions. [2023-08-29 02:55:22,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 83 transitions, 270 flow [2023-08-29 02:55:22,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:22,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:22,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 500 transitions. [2023-08-29 02:55:22,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6218905472636815 [2023-08-29 02:55:22,156 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 500 transitions. [2023-08-29 02:55:22,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 500 transitions. [2023-08-29 02:55:22,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:22,160 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 500 transitions. [2023-08-29 02:55:22,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 166.66666666666666) internal successors, (500), 3 states have internal predecessors, (500), 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 02:55:22,168 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 02:55:22,169 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 02:55:22,171 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 180 flow. Second operand 3 states and 500 transitions. [2023-08-29 02:55:22,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 83 transitions, 270 flow [2023-08-29 02:55:22,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 270 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:55:22,177 INFO L231 Difference]: Finished difference. Result has 74 places, 68 transitions, 149 flow [2023-08-29 02:55:22,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=149, PETRI_PLACES=74, PETRI_TRANSITIONS=68} [2023-08-29 02:55:22,181 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 2 predicate places. [2023-08-29 02:55:22,182 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 68 transitions, 149 flow [2023-08-29 02:55:22,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 02:55:22,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:22,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 02:55:22,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 02:55:22,183 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:55:22,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:22,184 INFO L85 PathProgramCache]: Analyzing trace with hash 310094017, now seen corresponding path program 1 times [2023-08-29 02:55:22,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:22,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596707932] [2023-08-29 02:55:22,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:22,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:22,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:22,234 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 02:55:22,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:22,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596707932] [2023-08-29 02:55:22,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596707932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:22,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:22,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:22,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158144295] [2023-08-29 02:55:22,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:22,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:22,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:22,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:22,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:22,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 268 [2023-08-29 02:55:22,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 68 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 02:55:22,271 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:22,271 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 268 [2023-08-29 02:55:22,271 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:22,473 INFO L130 PetriNetUnfolder]: 636/1592 cut-off events. [2023-08-29 02:55:22,474 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2023-08-29 02:55:22,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3023 conditions, 1592 events. 636/1592 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9243 event pairs, 234 based on Foata normal form. 0/1460 useless extension candidates. Maximal degree in co-relation 3005. Up to 770 conditions per place. [2023-08-29 02:55:22,482 INFO L137 encePairwiseOnDemand]: 246/268 looper letters, 76 selfloop transitions, 16 changer transitions 0/110 dead transitions. [2023-08-29 02:55:22,483 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 110 transitions, 422 flow [2023-08-29 02:55:22,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:22,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-08-29 02:55:22,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5883084577114428 [2023-08-29 02:55:22,486 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-08-29 02:55:22,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-08-29 02:55:22,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:22,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-08-29 02:55:22,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 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 02:55:22,490 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 02:55:22,491 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 02:55:22,491 INFO L175 Difference]: Start difference. First operand has 74 places, 68 transitions, 149 flow. Second operand 3 states and 473 transitions. [2023-08-29 02:55:22,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 110 transitions, 422 flow [2023-08-29 02:55:22,493 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 110 transitions, 416 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:22,495 INFO L231 Difference]: Finished difference. Result has 75 places, 84 transitions, 285 flow [2023-08-29 02:55:22,495 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=285, PETRI_PLACES=75, PETRI_TRANSITIONS=84} [2023-08-29 02:55:22,496 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 3 predicate places. [2023-08-29 02:55:22,496 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 84 transitions, 285 flow [2023-08-29 02:55:22,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 02:55:22,496 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:22,497 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:22,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 02:55:22,497 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:55:22,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:22,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1920361951, now seen corresponding path program 1 times [2023-08-29 02:55:22,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:22,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849864637] [2023-08-29 02:55:22,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:22,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:22,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:22,570 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 02:55:22,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:22,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849864637] [2023-08-29 02:55:22,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849864637] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:55:22,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1597465877] [2023-08-29 02:55:22,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:22,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:22,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:55:22,577 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 02:55:22,589 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 02:55:22,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:22,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:55:22,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:55:22,692 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 02:55:22,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:55:22,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1597465877] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:22,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:55:22,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 02:55:22,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752347416] [2023-08-29 02:55:22,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:22,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:22,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:22,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:22,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:55:22,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 268 [2023-08-29 02:55:22,758 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 84 transitions, 285 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 02:55:22,758 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:22,758 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 268 [2023-08-29 02:55:22,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:22,993 INFO L130 PetriNetUnfolder]: 536/1423 cut-off events. [2023-08-29 02:55:22,994 INFO L131 PetriNetUnfolder]: For 529/538 co-relation queries the response was YES. [2023-08-29 02:55:22,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3244 conditions, 1423 events. 536/1423 cut-off events. For 529/538 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 8318 event pairs, 342 based on Foata normal form. 0/1288 useless extension candidates. Maximal degree in co-relation 3226. Up to 1031 conditions per place. [2023-08-29 02:55:23,000 INFO L137 encePairwiseOnDemand]: 259/268 looper letters, 58 selfloop transitions, 12 changer transitions 0/105 dead transitions. [2023-08-29 02:55:23,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 105 transitions, 493 flow [2023-08-29 02:55:23,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:23,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-29 02:55:23,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5646766169154229 [2023-08-29 02:55:23,002 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-29 02:55:23,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-29 02:55:23,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:23,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-29 02:55:23,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 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 02:55:23,006 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 02:55:23,006 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 02:55:23,006 INFO L175 Difference]: Start difference. First operand has 75 places, 84 transitions, 285 flow. Second operand 3 states and 454 transitions. [2023-08-29 02:55:23,006 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 105 transitions, 493 flow [2023-08-29 02:55:23,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 105 transitions, 451 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:23,011 INFO L231 Difference]: Finished difference. Result has 77 places, 94 transitions, 359 flow [2023-08-29 02:55:23,011 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=359, PETRI_PLACES=77, PETRI_TRANSITIONS=94} [2023-08-29 02:55:23,012 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, 5 predicate places. [2023-08-29 02:55:23,012 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 94 transitions, 359 flow [2023-08-29 02:55:23,013 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 02:55:23,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:23,013 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:23,025 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 02:55:23,220 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 02:55:23,221 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:55:23,221 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:23,222 INFO L85 PathProgramCache]: Analyzing trace with hash 1434860097, now seen corresponding path program 1 times [2023-08-29 02:55:23,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:23,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625377175] [2023-08-29 02:55:23,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:23,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:23,316 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 02:55:23,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:23,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625377175] [2023-08-29 02:55:23,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625377175] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:55:23,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29860020] [2023-08-29 02:55:23,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:23,320 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:23,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:55:23,325 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 02:55:23,329 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 02:55:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:23,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:55:23,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:55:23,431 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 02:55:23,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:55:23,456 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 02:55:23,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29860020] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:55:23,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:55:23,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:55:23,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519530189] [2023-08-29 02:55:23,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:55:23,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:55:23,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:23,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:55:23,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:55:23,486 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 268 [2023-08-29 02:55:23,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 94 transitions, 359 flow. Second operand has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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 02:55:23,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:23,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 268 [2023-08-29 02:55:23,487 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:23,529 INFO L130 PetriNetUnfolder]: 24/93 cut-off events. [2023-08-29 02:55:23,529 INFO L131 PetriNetUnfolder]: For 11/11 co-relation queries the response was YES. [2023-08-29 02:55:23,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 93 events. 24/93 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 208 event pairs, 0 based on Foata normal form. 13/101 useless extension candidates. Maximal degree in co-relation 203. Up to 50 conditions per place. [2023-08-29 02:55:23,530 INFO L137 encePairwiseOnDemand]: 265/268 looper letters, 19 selfloop transitions, 2 changer transitions 9/45 dead transitions. [2023-08-29 02:55:23,530 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 185 flow [2023-08-29 02:55:23,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-29 02:55:23,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-29 02:55:23,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 598 transitions. [2023-08-29 02:55:23,532 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578358208955224 [2023-08-29 02:55:23,532 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 598 transitions. [2023-08-29 02:55:23,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 598 transitions. [2023-08-29 02:55:23,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:23,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 598 transitions. [2023-08-29 02:55:23,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 149.5) internal successors, (598), 4 states have internal predecessors, (598), 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 02:55:23,536 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 268.0) internal successors, (1340), 5 states have internal predecessors, (1340), 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 02:55:23,536 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 268.0) internal successors, (1340), 5 states have internal predecessors, (1340), 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 02:55:23,537 INFO L175 Difference]: Start difference. First operand has 77 places, 94 transitions, 359 flow. Second operand 4 states and 598 transitions. [2023-08-29 02:55:23,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 185 flow [2023-08-29 02:55:23,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 45 transitions, 153 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-29 02:55:23,539 INFO L231 Difference]: Finished difference. Result has 38 places, 27 transitions, 63 flow [2023-08-29 02:55:23,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=63, PETRI_PLACES=38, PETRI_TRANSITIONS=27} [2023-08-29 02:55:23,541 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -34 predicate places. [2023-08-29 02:55:23,541 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 27 transitions, 63 flow [2023-08-29 02:55:23,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 145.0) internal successors, (1015), 7 states have internal predecessors, (1015), 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 02:55:23,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:23,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:23,551 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 02:55:23,747 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,SelfDestructingSolverStorable3 [2023-08-29 02:55:23,748 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr4ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr4ASSERT_VIOLATIONDATA_RACE (and 12 more)] === [2023-08-29 02:55:23,748 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:23,748 INFO L85 PathProgramCache]: Analyzing trace with hash 30010531, now seen corresponding path program 1 times [2023-08-29 02:55:23,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:23,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476324879] [2023-08-29 02:55:23,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:23,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:23,804 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 02:55:23,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:23,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476324879] [2023-08-29 02:55:23,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476324879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:23,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:23,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:23,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127536927] [2023-08-29 02:55:23,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:23,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:23,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:23,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:23,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:23,833 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 268 [2023-08-29 02:55:23,834 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 27 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 02:55:23,834 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:23,835 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 268 [2023-08-29 02:55:23,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:23,844 INFO L130 PetriNetUnfolder]: 4/20 cut-off events. [2023-08-29 02:55:23,844 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 02:55:23,844 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48 conditions, 20 events. 4/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 35 event pairs, 4 based on Foata normal form. 3/23 useless extension candidates. Maximal degree in co-relation 43. Up to 15 conditions per place. [2023-08-29 02:55:23,844 INFO L137 encePairwiseOnDemand]: 266/268 looper letters, 0 selfloop transitions, 0 changer transitions 8/8 dead transitions. [2023-08-29 02:55:23,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 8 transitions, 37 flow [2023-08-29 02:55:23,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:23,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:23,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-08-29 02:55:23,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5310945273631841 [2023-08-29 02:55:23,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-08-29 02:55:23,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-08-29 02:55:23,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:23,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-08-29 02:55:23,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 02:55:23,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 02:55:23,852 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 268.0) internal successors, (1072), 4 states have internal predecessors, (1072), 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 02:55:23,852 INFO L175 Difference]: Start difference. First operand has 38 places, 27 transitions, 63 flow. Second operand 3 states and 427 transitions. [2023-08-29 02:55:23,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 8 transitions, 37 flow [2023-08-29 02:55:23,855 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 8 transitions, 34 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:23,856 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-29 02:55:23,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=268, PETRI_DIFFERENCE_MINUEND_FLOW=22, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-29 02:55:23,858 INFO L281 CegarLoopForPetriNet]: 72 programPoint places, -57 predicate places. [2023-08-29 02:55:23,859 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-29 02:55:23,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 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 02:55:23,861 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (15 of 16 remaining) [2023-08-29 02:55:23,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (14 of 16 remaining) [2023-08-29 02:55:23,862 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (13 of 16 remaining) [2023-08-29 02:55:23,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (12 of 16 remaining) [2023-08-29 02:55:23,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 16 remaining) [2023-08-29 02:55:23,863 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (10 of 16 remaining) [2023-08-29 02:55:23,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (9 of 16 remaining) [2023-08-29 02:55:23,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (8 of 16 remaining) [2023-08-29 02:55:23,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (7 of 16 remaining) [2023-08-29 02:55:23,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (6 of 16 remaining) [2023-08-29 02:55:23,864 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (5 of 16 remaining) [2023-08-29 02:55:23,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (4 of 16 remaining) [2023-08-29 02:55:23,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (3 of 16 remaining) [2023-08-29 02:55:23,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (2 of 16 remaining) [2023-08-29 02:55:23,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (1 of 16 remaining) [2023-08-29 02:55:23,865 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 16 remaining) [2023-08-29 02:55:23,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 02:55:23,866 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-29 02:55:23,868 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:55:23,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 167 transitions, 342 flow [2023-08-29 02:55:23,897 INFO L130 PetriNetUnfolder]: 30/246 cut-off events. [2023-08-29 02:55:23,897 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-08-29 02:55:23,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252 conditions, 246 events. 30/246 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 951 event pairs, 0 based on Foata normal form. 0/196 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2023-08-29 02:55:23,898 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 167 transitions, 342 flow [2023-08-29 02:55:23,912 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 147 places, 162 transitions, 329 flow [2023-08-29 02:55:23,912 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:55:23,912 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 147 places, 162 transitions, 329 flow [2023-08-29 02:55:23,913 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 147 places, 162 transitions, 329 flow [2023-08-29 02:55:23,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 147 places, 162 transitions, 329 flow [2023-08-29 02:55:23,930 INFO L130 PetriNetUnfolder]: 29/241 cut-off events. [2023-08-29 02:55:23,930 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:23,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 246 conditions, 241 events. 29/241 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 944 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 134. Up to 6 conditions per place. [2023-08-29 02:55:23,935 INFO L119 LiptonReduction]: Number of co-enabled transitions 8500 [2023-08-29 02:55:25,969 INFO L134 LiptonReduction]: Checked pairs total: 31112 [2023-08-29 02:55:25,969 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-29 02:55:25,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:55:25,972 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;@38db694e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:55:25,972 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:55:25,975 INFO L130 PetriNetUnfolder]: 2/33 cut-off events. [2023-08-29 02:55:25,975 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:25,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:25,975 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-29 02:55:25,976 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:55:25,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:25,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1085764455, now seen corresponding path program 1 times [2023-08-29 02:55:25,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:25,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807356142] [2023-08-29 02:55:25,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:25,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:55:26,006 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:55:26,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:55:26,041 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:55:26,042 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:55:26,042 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:55:26,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 02:55:26,042 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:55:26,043 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:55:26,043 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:55:26,043 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-29 02:55:26,066 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-29 02:55:26,069 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 219 transitions, 456 flow [2023-08-29 02:55:26,108 INFO L130 PetriNetUnfolder]: 51/407 cut-off events. [2023-08-29 02:55:26,108 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:55:26,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 407 events. 51/407 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1802 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 248. Up to 9 conditions per place. [2023-08-29 02:55:26,110 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 219 transitions, 456 flow [2023-08-29 02:55:26,114 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 219 transitions, 456 flow [2023-08-29 02:55:26,114 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:55:26,114 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 219 transitions, 456 flow [2023-08-29 02:55:26,114 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 219 transitions, 456 flow [2023-08-29 02:55:26,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 219 transitions, 456 flow [2023-08-29 02:55:26,147 INFO L130 PetriNetUnfolder]: 51/407 cut-off events. [2023-08-29 02:55:26,147 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:55:26,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 407 events. 51/407 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1802 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 248. Up to 9 conditions per place. [2023-08-29 02:55:26,162 INFO L119 LiptonReduction]: Number of co-enabled transitions 23100 [2023-08-29 02:55:28,444 INFO L134 LiptonReduction]: Checked pairs total: 104947 [2023-08-29 02:55:28,444 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-29 02:55:28,446 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:55:28,446 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;@38db694e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:55:28,446 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-29 02:55:28,449 INFO L130 PetriNetUnfolder]: 2/19 cut-off events. [2023-08-29 02:55:28,449 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:28,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:28,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 02:55:28,449 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 02:55:28,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:28,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1029160310, now seen corresponding path program 1 times [2023-08-29 02:55:28,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:28,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799562226] [2023-08-29 02:55:28,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:28,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:28,469 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 02:55:28,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:28,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799562226] [2023-08-29 02:55:28,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799562226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:28,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:28,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:28,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822328071] [2023-08-29 02:55:28,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:28,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:28,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:28,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:28,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:28,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 187 out of 338 [2023-08-29 02:55:28,481 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 126 transitions, 270 flow. Second operand has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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 02:55:28,481 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:28,481 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 187 of 338 [2023-08-29 02:55:28,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:29,478 INFO L130 PetriNetUnfolder]: 5440/10568 cut-off events. [2023-08-29 02:55:29,479 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-29 02:55:29,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19007 conditions, 10568 events. 5440/10568 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 306. Compared 86254 event pairs, 4674 based on Foata normal form. 1449/10853 useless extension candidates. Maximal degree in co-relation 11045. Up to 8352 conditions per place. [2023-08-29 02:55:29,544 INFO L137 encePairwiseOnDemand]: 313/338 looper letters, 59 selfloop transitions, 2 changer transitions 0/117 dead transitions. [2023-08-29 02:55:29,544 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 117 transitions, 374 flow [2023-08-29 02:55:29,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:29,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:29,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 651 transitions. [2023-08-29 02:55:29,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6420118343195266 [2023-08-29 02:55:29,547 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 651 transitions. [2023-08-29 02:55:29,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 651 transitions. [2023-08-29 02:55:29,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:29,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 651 transitions. [2023-08-29 02:55:29,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 217.0) internal successors, (651), 3 states have internal predecessors, (651), 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 02:55:29,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 02:55:29,551 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 02:55:29,552 INFO L175 Difference]: Start difference. First operand has 106 places, 126 transitions, 270 flow. Second operand 3 states and 651 transitions. [2023-08-29 02:55:29,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 117 transitions, 374 flow [2023-08-29 02:55:29,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 117 transitions, 374 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:55:29,556 INFO L231 Difference]: Finished difference. Result has 108 places, 105 transitions, 238 flow [2023-08-29 02:55:29,556 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=108, PETRI_TRANSITIONS=105} [2023-08-29 02:55:29,557 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 2 predicate places. [2023-08-29 02:55:29,557 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 105 transitions, 238 flow [2023-08-29 02:55:29,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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 02:55:29,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:29,558 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 02:55:29,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 02:55:29,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 02:55:29,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:29,559 INFO L85 PathProgramCache]: Analyzing trace with hash 1868747329, now seen corresponding path program 1 times [2023-08-29 02:55:29,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:29,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091057997] [2023-08-29 02:55:29,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:29,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:29,578 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 02:55:29,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:29,579 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091057997] [2023-08-29 02:55:29,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091057997] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:29,579 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:29,579 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:29,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102337356] [2023-08-29 02:55:29,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:29,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:29,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:29,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:29,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:29,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 158 out of 338 [2023-08-29 02:55:29,619 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 105 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 02:55:29,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:29,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 158 of 338 [2023-08-29 02:55:29,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:33,509 INFO L130 PetriNetUnfolder]: 30303/54246 cut-off events. [2023-08-29 02:55:33,509 INFO L131 PetriNetUnfolder]: For 1105/1105 co-relation queries the response was YES. [2023-08-29 02:55:33,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103105 conditions, 54246 events. 30303/54246 cut-off events. For 1105/1105 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 475586 event pairs, 11450 based on Foata normal form. 0/49429 useless extension candidates. Maximal degree in co-relation 102973. Up to 26729 conditions per place. [2023-08-29 02:55:34,013 INFO L137 encePairwiseOnDemand]: 305/338 looper letters, 113 selfloop transitions, 24 changer transitions 0/168 dead transitions. [2023-08-29 02:55:34,013 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 168 transitions, 656 flow [2023-08-29 02:55:34,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:34,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:34,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 618 transitions. [2023-08-29 02:55:34,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6094674556213018 [2023-08-29 02:55:34,016 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 618 transitions. [2023-08-29 02:55:34,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 618 transitions. [2023-08-29 02:55:34,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:34,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 618 transitions. [2023-08-29 02:55:34,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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 02:55:34,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 02:55:34,019 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 02:55:34,020 INFO L175 Difference]: Start difference. First operand has 108 places, 105 transitions, 238 flow. Second operand 3 states and 618 transitions. [2023-08-29 02:55:34,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 168 transitions, 656 flow [2023-08-29 02:55:34,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 168 transitions, 653 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:55:34,027 INFO L231 Difference]: Finished difference. Result has 111 places, 129 transitions, 446 flow [2023-08-29 02:55:34,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=446, PETRI_PLACES=111, PETRI_TRANSITIONS=129} [2023-08-29 02:55:34,028 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 5 predicate places. [2023-08-29 02:55:34,028 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 129 transitions, 446 flow [2023-08-29 02:55:34,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 02:55:34,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:34,029 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:34,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-29 02:55:34,029 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 02:55:34,029 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:34,029 INFO L85 PathProgramCache]: Analyzing trace with hash 867307821, now seen corresponding path program 1 times [2023-08-29 02:55:34,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:34,030 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433871129] [2023-08-29 02:55:34,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:34,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:34,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:34,075 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 02:55:34,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:34,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433871129] [2023-08-29 02:55:34,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433871129] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:55:34,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105560043] [2023-08-29 02:55:34,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:34,076 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:34,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:55:34,078 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 02:55:34,083 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 02:55:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:34,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:55:34,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:55:34,149 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 02:55:34,150 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:55:34,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [105560043] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:34,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:55:34,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 02:55:34,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292427381] [2023-08-29 02:55:34,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:34,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:34,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:34,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:34,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:55:34,212 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 338 [2023-08-29 02:55:34,213 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 129 transitions, 446 flow. Second operand has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 02:55:34,213 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:34,213 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 338 [2023-08-29 02:55:34,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:37,237 INFO L130 PetriNetUnfolder]: 24494/46133 cut-off events. [2023-08-29 02:55:37,237 INFO L131 PetriNetUnfolder]: For 23506/24305 co-relation queries the response was YES. [2023-08-29 02:55:37,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109304 conditions, 46133 events. 24494/46133 cut-off events. For 23506/24305 co-relation queries the response was YES. Maximal size of possible extension queue 1050. Compared 425562 event pairs, 15220 based on Foata normal form. 97/41257 useless extension candidates. Maximal degree in co-relation 59593. Up to 35139 conditions per place. [2023-08-29 02:55:37,464 INFO L137 encePairwiseOnDemand]: 324/338 looper letters, 87 selfloop transitions, 24 changer transitions 0/168 dead transitions. [2023-08-29 02:55:37,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 168 transitions, 806 flow [2023-08-29 02:55:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:37,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 599 transitions. [2023-08-29 02:55:37,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5907297830374754 [2023-08-29 02:55:37,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 599 transitions. [2023-08-29 02:55:37,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 599 transitions. [2023-08-29 02:55:37,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:37,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 599 transitions. [2023-08-29 02:55:37,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 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 02:55:37,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 02:55:37,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 02:55:37,479 INFO L175 Difference]: Start difference. First operand has 111 places, 129 transitions, 446 flow. Second operand 3 states and 599 transitions. [2023-08-29 02:55:37,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 168 transitions, 806 flow [2023-08-29 02:55:37,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 168 transitions, 738 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 02:55:37,534 INFO L231 Difference]: Finished difference. Result has 113 places, 151 transitions, 624 flow [2023-08-29 02:55:37,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=624, PETRI_PLACES=113, PETRI_TRANSITIONS=151} [2023-08-29 02:55:37,535 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, 7 predicate places. [2023-08-29 02:55:37,536 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 151 transitions, 624 flow [2023-08-29 02:55:37,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 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 02:55:37,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:37,536 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:37,545 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 02:55:37,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:37,742 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 02:55:37,743 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:37,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1612186153, now seen corresponding path program 1 times [2023-08-29 02:55:37,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:37,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588904044] [2023-08-29 02:55:37,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:37,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:37,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:37,792 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 02:55:37,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:37,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588904044] [2023-08-29 02:55:37,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588904044] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:55:37,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1193829686] [2023-08-29 02:55:37,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:37,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:37,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:55:37,795 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:55:37,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 02:55:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:37,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:55:37,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:55:37,883 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 02:55:37,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 02:55:37,905 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 02:55:37,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1193829686] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 02:55:37,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 02:55:37,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 02:55:37,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108272289] [2023-08-29 02:55:37,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 02:55:37,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 02:55:37,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:37,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 02:55:37,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 02:55:37,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 186 out of 338 [2023-08-29 02:55:37,927 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 151 transitions, 624 flow. Second operand has 7 states, 7 states have (on average 188.57142857142858) internal successors, (1320), 7 states have internal predecessors, (1320), 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 02:55:37,927 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:37,927 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 186 of 338 [2023-08-29 02:55:37,927 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:38,210 INFO L130 PetriNetUnfolder]: 1351/3182 cut-off events. [2023-08-29 02:55:38,210 INFO L131 PetriNetUnfolder]: For 2171/2293 co-relation queries the response was YES. [2023-08-29 02:55:38,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7400 conditions, 3182 events. 1351/3182 cut-off events. For 2171/2293 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 23659 event pairs, 306 based on Foata normal form. 294/3214 useless extension candidates. Maximal degree in co-relation 7392. Up to 1576 conditions per place. [2023-08-29 02:55:38,229 INFO L137 encePairwiseOnDemand]: 335/338 looper letters, 74 selfloop transitions, 3 changer transitions 0/126 dead transitions. [2023-08-29 02:55:38,229 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 126 transitions, 596 flow [2023-08-29 02:55:38,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-29 02:55:38,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-29 02:55:38,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 997 transitions. [2023-08-29 02:55:38,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5899408284023668 [2023-08-29 02:55:38,234 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 997 transitions. [2023-08-29 02:55:38,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 997 transitions. [2023-08-29 02:55:38,235 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:38,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 997 transitions. [2023-08-29 02:55:38,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.4) internal successors, (997), 5 states have internal predecessors, (997), 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 02:55:38,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 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 02:55:38,242 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 338.0) internal successors, (2028), 6 states have internal predecessors, (2028), 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 02:55:38,243 INFO L175 Difference]: Start difference. First operand has 113 places, 151 transitions, 624 flow. Second operand 5 states and 997 transitions. [2023-08-29 02:55:38,243 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 126 transitions, 596 flow [2023-08-29 02:55:38,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 126 transitions, 526 flow, removed 35 selfloop flow, removed 1 redundant places. [2023-08-29 02:55:38,250 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 266 flow [2023-08-29 02:55:38,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=266, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2023-08-29 02:55:38,251 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, -27 predicate places. [2023-08-29 02:55:38,251 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 266 flow [2023-08-29 02:55:38,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 188.57142857142858) internal successors, (1320), 7 states have internal predecessors, (1320), 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 02:55:38,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:38,252 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:55:38,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 02:55:38,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:55:38,459 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONDATA_RACE === [t_funErr0ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, t_funErr1ASSERT_VIOLATIONDATA_RACE, t_funErr2ASSERT_VIOLATIONDATA_RACE (and 17 more)] === [2023-08-29 02:55:38,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:38,460 INFO L85 PathProgramCache]: Analyzing trace with hash 2120634688, now seen corresponding path program 1 times [2023-08-29 02:55:38,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:38,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895022744] [2023-08-29 02:55:38,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:38,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:38,496 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 02:55:38,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:38,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895022744] [2023-08-29 02:55:38,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895022744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:38,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:38,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:38,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805936090] [2023-08-29 02:55:38,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:38,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:38,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:38,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:38,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:38,518 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 180 out of 338 [2023-08-29 02:55:38,519 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 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 02:55:38,519 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:38,519 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 180 of 338 [2023-08-29 02:55:38,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:38,542 INFO L130 PetriNetUnfolder]: 105/228 cut-off events. [2023-08-29 02:55:38,542 INFO L131 PetriNetUnfolder]: For 100/100 co-relation queries the response was YES. [2023-08-29 02:55:38,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 552 conditions, 228 events. 105/228 cut-off events. For 100/100 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 920 event pairs, 99 based on Foata normal form. 0/224 useless extension candidates. Maximal degree in co-relation 544. Up to 185 conditions per place. [2023-08-29 02:55:38,543 INFO L137 encePairwiseOnDemand]: 335/338 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-29 02:55:38,543 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 20 transitions, 102 flow [2023-08-29 02:55:38,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:38,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:38,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 554 transitions. [2023-08-29 02:55:38,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5463510848126233 [2023-08-29 02:55:38,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 554 transitions. [2023-08-29 02:55:38,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 554 transitions. [2023-08-29 02:55:38,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:38,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 554 transitions. [2023-08-29 02:55:38,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 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 02:55:38,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 02:55:38,551 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 338.0) internal successors, (1352), 4 states have internal predecessors, (1352), 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 02:55:38,551 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 266 flow. Second operand 3 states and 554 transitions. [2023-08-29 02:55:38,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 20 transitions, 102 flow [2023-08-29 02:55:38,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 20 transitions, 95 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-29 02:55:38,552 INFO L231 Difference]: Finished difference. Result has 30 places, 0 transitions, 0 flow [2023-08-29 02:55:38,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=338, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=30, PETRI_TRANSITIONS=0} [2023-08-29 02:55:38,553 INFO L281 CegarLoopForPetriNet]: 106 programPoint places, -76 predicate places. [2023-08-29 02:55:38,554 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 0 transitions, 0 flow [2023-08-29 02:55:38,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 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 02:55:38,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (20 of 21 remaining) [2023-08-29 02:55:38,554 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (19 of 21 remaining) [2023-08-29 02:55:38,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (18 of 21 remaining) [2023-08-29 02:55:38,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (17 of 21 remaining) [2023-08-29 02:55:38,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (16 of 21 remaining) [2023-08-29 02:55:38,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (15 of 21 remaining) [2023-08-29 02:55:38,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (14 of 21 remaining) [2023-08-29 02:55:38,555 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (13 of 21 remaining) [2023-08-29 02:55:38,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (12 of 21 remaining) [2023-08-29 02:55:38,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (11 of 21 remaining) [2023-08-29 02:55:38,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONDATA_RACE (10 of 21 remaining) [2023-08-29 02:55:38,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (9 of 21 remaining) [2023-08-29 02:55:38,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (8 of 21 remaining) [2023-08-29 02:55:38,556 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (7 of 21 remaining) [2023-08-29 02:55:38,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (6 of 21 remaining) [2023-08-29 02:55:38,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (5 of 21 remaining) [2023-08-29 02:55:38,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (4 of 21 remaining) [2023-08-29 02:55:38,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr3ASSERT_VIOLATIONDATA_RACE (3 of 21 remaining) [2023-08-29 02:55:38,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr4ASSERT_VIOLATIONDATA_RACE (2 of 21 remaining) [2023-08-29 02:55:38,557 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr2ASSERT_VIOLATIONDATA_RACE (1 of 21 remaining) [2023-08-29 02:55:38,558 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr1ASSERT_VIOLATIONDATA_RACE (0 of 21 remaining) [2023-08-29 02:55:38,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-29 02:55:38,558 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-29 02:55:38,558 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-29 02:55:38,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 219 transitions, 456 flow [2023-08-29 02:55:38,598 INFO L130 PetriNetUnfolder]: 51/407 cut-off events. [2023-08-29 02:55:38,599 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:55:38,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 407 events. 51/407 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1802 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 248. Up to 9 conditions per place. [2023-08-29 02:55:38,601 INFO L82 GeneralOperation]: Start removeDead. Operand has 197 places, 219 transitions, 456 flow [2023-08-29 02:55:38,603 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 197 places, 219 transitions, 456 flow [2023-08-29 02:55:38,603 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:55:38,603 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 197 places, 219 transitions, 456 flow [2023-08-29 02:55:38,603 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 197 places, 219 transitions, 456 flow [2023-08-29 02:55:38,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 197 places, 219 transitions, 456 flow [2023-08-29 02:55:38,634 INFO L130 PetriNetUnfolder]: 51/407 cut-off events. [2023-08-29 02:55:38,635 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2023-08-29 02:55:38,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 407 events. 51/407 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1802 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 248. Up to 9 conditions per place. [2023-08-29 02:55:38,647 INFO L119 LiptonReduction]: Number of co-enabled transitions 23100 [2023-08-29 02:55:40,886 INFO L134 LiptonReduction]: Checked pairs total: 104868 [2023-08-29 02:55:40,886 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-29 02:55:40,888 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-29 02:55:40,888 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;@38db694e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:55:40,888 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-29 02:55:40,895 INFO L130 PetriNetUnfolder]: 13/99 cut-off events. [2023-08-29 02:55:40,895 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-29 02:55:40,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:40,895 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-29 02:55:40,895 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-29 02:55:40,896 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:40,896 INFO L85 PathProgramCache]: Analyzing trace with hash -10515396, now seen corresponding path program 1 times [2023-08-29 02:55:40,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:40,896 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013963612] [2023-08-29 02:55:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:40,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:40,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:55:40,907 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-29 02:55:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-29 02:55:40,918 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-29 02:55:40,918 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-29 02:55:40,919 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-29 02:55:40,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 02:55:40,919 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-29 02:55:40,919 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-29 02:55:40,919 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-29 02:55:40,920 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-29 02:55:40,941 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-29 02:55:40,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 271 transitions, 572 flow [2023-08-29 02:55:41,015 INFO L130 PetriNetUnfolder]: 77/611 cut-off events. [2023-08-29 02:55:41,015 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 02:55:41,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 611 events. 77/611 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2863 event pairs, 1 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 415. Up to 16 conditions per place. [2023-08-29 02:55:41,020 INFO L82 GeneralOperation]: Start removeDead. Operand has 243 places, 271 transitions, 572 flow [2023-08-29 02:55:41,025 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 243 places, 271 transitions, 572 flow [2023-08-29 02:55:41,026 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 02:55:41,026 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 243 places, 271 transitions, 572 flow [2023-08-29 02:55:41,026 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 243 places, 271 transitions, 572 flow [2023-08-29 02:55:41,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 243 places, 271 transitions, 572 flow [2023-08-29 02:55:41,096 INFO L130 PetriNetUnfolder]: 77/611 cut-off events. [2023-08-29 02:55:41,096 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-08-29 02:55:41,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639 conditions, 611 events. 77/611 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2863 event pairs, 1 based on Foata normal form. 0/487 useless extension candidates. Maximal degree in co-relation 415. Up to 16 conditions per place. [2023-08-29 02:55:41,122 INFO L119 LiptonReduction]: Number of co-enabled transitions 42600 [2023-08-29 02:55:43,656 INFO L134 LiptonReduction]: Checked pairs total: 208275 [2023-08-29 02:55:43,656 INFO L136 LiptonReduction]: Total number of compositions: 142 [2023-08-29 02:55:43,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 02:55:43,658 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;@38db694e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 02:55:43,658 INFO L358 AbstractCegarLoop]: Starting to check reachability of 26 error locations. [2023-08-29 02:55:43,660 INFO L130 PetriNetUnfolder]: 2/19 cut-off events. [2023-08-29 02:55:43,660 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 02:55:43,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:43,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-29 02:55:43,660 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-29 02:55:43,660 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:43,661 INFO L85 PathProgramCache]: Analyzing trace with hash 1586203149, now seen corresponding path program 1 times [2023-08-29 02:55:43,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:43,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527310965] [2023-08-29 02:55:43,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:43,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:43,677 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 02:55:43,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:43,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527310965] [2023-08-29 02:55:43,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527310965] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:43,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:43,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:43,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025240462] [2023-08-29 02:55:43,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:43,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:43,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:43,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:43,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:43,685 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 231 out of 413 [2023-08-29 02:55:43,686 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 164 transitions, 358 flow. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 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 02:55:43,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:43,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 231 of 413 [2023-08-29 02:55:43,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:55:56,282 INFO L130 PetriNetUnfolder]: 101716/167274 cut-off events. [2023-08-29 02:55:56,282 INFO L131 PetriNetUnfolder]: For 1528/1528 co-relation queries the response was YES. [2023-08-29 02:55:56,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306159 conditions, 167274 events. 101716/167274 cut-off events. For 1528/1528 co-relation queries the response was YES. Maximal size of possible extension queue 3855. Compared 1641856 event pairs, 60688 based on Foata normal form. 27236/179981 useless extension candidates. Maximal degree in co-relation 21041. Up to 137592 conditions per place. [2023-08-29 02:55:57,206 INFO L137 encePairwiseOnDemand]: 382/413 looper letters, 73 selfloop transitions, 2 changer transitions 0/149 dead transitions. [2023-08-29 02:55:57,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 149 transitions, 478 flow [2023-08-29 02:55:57,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:55:57,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:55:57,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 803 transitions. [2023-08-29 02:55:57,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6481033091202583 [2023-08-29 02:55:57,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 803 transitions. [2023-08-29 02:55:57,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 803 transitions. [2023-08-29 02:55:57,209 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:55:57,209 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 803 transitions. [2023-08-29 02:55:57,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 267.6666666666667) internal successors, (803), 3 states have internal predecessors, (803), 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 02:55:57,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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 02:55:57,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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 02:55:57,214 INFO L175 Difference]: Start difference. First operand has 138 places, 164 transitions, 358 flow. Second operand 3 states and 803 transitions. [2023-08-29 02:55:57,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 149 transitions, 478 flow [2023-08-29 02:55:57,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 149 transitions, 478 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 02:55:57,217 INFO L231 Difference]: Finished difference. Result has 140 places, 137 transitions, 314 flow [2023-08-29 02:55:57,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=314, PETRI_PLACES=140, PETRI_TRANSITIONS=137} [2023-08-29 02:55:57,218 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 2 predicate places. [2023-08-29 02:55:57,218 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 137 transitions, 314 flow [2023-08-29 02:55:57,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 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 02:55:57,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:55:57,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-29 02:55:57,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-29 02:55:57,219 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-29 02:55:57,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:55:57,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1966710867, now seen corresponding path program 1 times [2023-08-29 02:55:57,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:55:57,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75070285] [2023-08-29 02:55:57,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:55:57,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:55:57,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:55:57,239 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 02:55:57,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:55:57,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75070285] [2023-08-29 02:55:57,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75070285] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:55:57,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 02:55:57,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 02:55:57,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293109615] [2023-08-29 02:55:57,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:55:57,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:55:57,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:55:57,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:55:57,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 02:55:57,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 413 [2023-08-29 02:55:57,296 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 137 transitions, 314 flow. Second operand has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 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 02:55:57,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:55:57,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 413 [2023-08-29 02:55:57,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 02:58:11,433 INFO L130 PetriNetUnfolder]: 1047499/1592195 cut-off events. [2023-08-29 02:58:11,434 INFO L131 PetriNetUnfolder]: For 30425/30425 co-relation queries the response was YES. [2023-08-29 02:58:16,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3065257 conditions, 1592195 events. 1047499/1592195 cut-off events. For 30425/30425 co-relation queries the response was YES. Maximal size of possible extension queue 23670. Compared 16259682 event pairs, 413835 based on Foata normal form. 0/1448163 useless extension candidates. Maximal degree in co-relation 3065124. Up to 816356 conditions per place. [2023-08-29 02:58:25,558 INFO L137 encePairwiseOnDemand]: 369/413 looper letters, 146 selfloop transitions, 32 changer transitions 0/219 dead transitions. [2023-08-29 02:58:25,558 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 219 transitions, 862 flow [2023-08-29 02:58:25,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 02:58:25,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 02:58:25,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 761 transitions. [2023-08-29 02:58:25,563 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6142050040355125 [2023-08-29 02:58:25,563 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 761 transitions. [2023-08-29 02:58:25,563 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 761 transitions. [2023-08-29 02:58:25,564 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 02:58:25,564 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 761 transitions. [2023-08-29 02:58:25,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 253.66666666666666) internal successors, (761), 3 states have internal predecessors, (761), 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 02:58:25,582 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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 02:58:25,588 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 413.0) internal successors, (1652), 4 states have internal predecessors, (1652), 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 02:58:25,589 INFO L175 Difference]: Start difference. First operand has 140 places, 137 transitions, 314 flow. Second operand 3 states and 761 transitions. [2023-08-29 02:58:25,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 219 transitions, 862 flow [2023-08-29 02:58:25,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 219 transitions, 859 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 02:58:25,627 INFO L231 Difference]: Finished difference. Result has 143 places, 169 transitions, 592 flow [2023-08-29 02:58:25,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=413, PETRI_DIFFERENCE_MINUEND_FLOW=312, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=592, PETRI_PLACES=143, PETRI_TRANSITIONS=169} [2023-08-29 02:58:25,631 INFO L281 CegarLoopForPetriNet]: 138 programPoint places, 5 predicate places. [2023-08-29 02:58:25,631 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 169 transitions, 592 flow [2023-08-29 02:58:25,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 193.0) internal successors, (579), 3 states have internal predecessors, (579), 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 02:58:25,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 02:58:25,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 02:58:25,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-29 02:58:25,632 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE, t_funErr3ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (and 23 more)] === [2023-08-29 02:58:25,632 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 02:58:25,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1759347104, now seen corresponding path program 1 times [2023-08-29 02:58:25,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 02:58:25,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517137311] [2023-08-29 02:58:25,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:58:25,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 02:58:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:58:25,718 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 02:58:25,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 02:58:25,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517137311] [2023-08-29 02:58:25,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517137311] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 02:58:25,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642075470] [2023-08-29 02:58:25,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 02:58:25,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 02:58:25,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 02:58:25,731 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 02:58:25,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 02:58:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 02:58:25,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 02:58:25,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 02:58:25,805 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 02:58:25,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 02:58:25,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642075470] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 02:58:25,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 02:58:25,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-29 02:58:25,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37969492] [2023-08-29 02:58:25,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 02:58:25,807 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 02:58:25,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 02:58:25,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 02:58:25,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-29 02:58:25,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 413 [2023-08-29 02:58:25,921 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 169 transitions, 592 flow. Second operand has 3 states, 3 states have (on average 213.0) internal successors, (639), 3 states have internal predecessors, (639), 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 02:58:25,921 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 02:58:25,921 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 413 [2023-08-29 02:58:25,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand