./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:41:59,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:41:59,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:41:59,529 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:41:59,529 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:41:59,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:41:59,533 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:41:59,537 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:41:59,538 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:41:59,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:41:59,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:41:59,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:41:59,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:41:59,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:41:59,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:41:59,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:41:59,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:41:59,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:41:59,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:41:59,555 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:41:59,557 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:41:59,557 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:41:59,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:41:59,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:41:59,559 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:41:59,564 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:41:59,564 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:41:59,564 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:41:59,565 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:41:59,565 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:41:59,566 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:41:59,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:41:59,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:41:59,569 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:41:59,569 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:41:59,569 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:41:59,570 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:41:59,570 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:41:59,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:41:59,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:41:59,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:41:59,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:41:59,572 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:41:59,600 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:41:59,600 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:41:59,601 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:41:59,601 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:41:59,601 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:41:59,601 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:41:59,602 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:41:59,602 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:41:59,602 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:41:59,602 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:41:59,603 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:41:59,603 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:41:59,603 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:41:59,603 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:41:59,603 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:41:59,603 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:41:59,604 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:41:59,604 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:41:59,605 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:41:59,605 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:41:59,605 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:41:59,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:41:59,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:41:59,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:41:59,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:41:59,606 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:41:59,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:41:59,606 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:41:59,606 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:41:59,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:41:59,606 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:41:59,607 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:41:59,607 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:41:59,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:41:59,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:41:59,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:41:59,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:41:59,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:41:59,608 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:41:59,608 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:41:59,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:41:59,608 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:41:59,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:41:59,608 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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/UTaipan-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7df5d4e763d99c6ca9aa3d4daa03dcc5b8b9d65829db9a89ff85ebe5a14f3ac3 [2022-04-18 18:41:59,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:41:59,812 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:41:59,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:41:59,815 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:41:59,815 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:41:59,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2022-04-18 18:41:59,863 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f65f63ad2/382caa50a5424ed98af0832c686e6c7f/FLAG980630f7a [2022-04-18 18:42:00,256 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:42:00,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i [2022-04-18 18:42:00,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f65f63ad2/382caa50a5424ed98af0832c686e6c7f/FLAG980630f7a [2022-04-18 18:42:00,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/f65f63ad2/382caa50a5424ed98af0832c686e6c7f [2022-04-18 18:42:00,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:42:00,288 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:42:00,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:42:00,289 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:42:00,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:42:00,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:42:00" (1/1) ... [2022-04-18 18:42:00,293 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ed08a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00, skipping insertion in model container [2022-04-18 18:42:00,293 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:42:00" (1/1) ... [2022-04-18 18:42:00,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:42:00,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:42:00,551 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2022-04-18 18:42:00,578 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:42:00,586 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:42:00,610 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_03-munge_racing.i[30176,30189] [2022-04-18 18:42:00,617 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:42:00,644 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:42:00,644 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00 WrapperNode [2022-04-18 18:42:00,645 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:42:00,645 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:42:00,646 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:42:00,646 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:42:00,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ... [2022-04-18 18:42:00,664 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ... [2022-04-18 18:42:00,684 INFO L137 Inliner]: procedures = 172, calls = 43, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 237 [2022-04-18 18:42:00,684 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:42:00,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:42:00,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:42:00,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:42:00,693 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ... [2022-04-18 18:42:00,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ... [2022-04-18 18:42:00,696 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ... [2022-04-18 18:42:00,707 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ... [2022-04-18 18:42:00,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ... [2022-04-18 18:42:00,716 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ... [2022-04-18 18:42:00,718 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ... [2022-04-18 18:42:00,720 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:42:00,721 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:42:00,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:42:00,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:42:00,723 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (1/1) ... [2022-04-18 18:42:00,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:42:00,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:42:00,749 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 18:42:00,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 18:42:00,781 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:42:00,781 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2022-04-18 18:42:00,781 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2022-04-18 18:42:00,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:42:00,781 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 18:42:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:42:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:42:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2022-04-18 18:42:00,782 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2022-04-18 18:42:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:42:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:42:00,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:42:00,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:42:00,783 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 18:42:00,879 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:42:00,880 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:42:01,138 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:42:01,165 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:42:01,165 INFO L299 CfgBuilder]: Removed 24 assume(true) statements. [2022-04-18 18:42:01,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:42:01 BoogieIcfgContainer [2022-04-18 18:42:01,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:42:01,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:42:01,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:42:01,171 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:42:01,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:42:00" (1/3) ... [2022-04-18 18:42:01,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f5eec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:42:01, skipping insertion in model container [2022-04-18 18:42:01,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:42:00" (2/3) ... [2022-04-18 18:42:01,173 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28f5eec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:42:01, skipping insertion in model container [2022-04-18 18:42:01,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:42:01" (3/3) ... [2022-04-18 18:42:01,174 INFO L111 eAbstractionObserver]: Analyzing ICFG 28-race_reach_03-munge_racing.i [2022-04-18 18:42:01,178 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:42:01,179 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:42:01,179 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-04-18 18:42:01,179 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:42:01,261 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-04-18 18:42:01,290 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:42:01,295 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 18:42:01,295 INFO L341 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2022-04-18 18:42:01,306 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:42:01,315 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 229 places, 256 transitions, 534 flow [2022-04-18 18:42:01,317 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 229 places, 256 transitions, 534 flow [2022-04-18 18:42:01,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 229 places, 256 transitions, 534 flow [2022-04-18 18:42:01,397 INFO L129 PetriNetUnfolder]: 58/474 cut-off events. [2022-04-18 18:42:01,398 INFO L130 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-04-18 18:42:01,420 INFO L84 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 474 events. 58/474 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 2345 event pairs, 0 based on Foata normal form. 0/387 useless extension candidates. Maximal degree in co-relation 257. Up to 8 conditions per place. [2022-04-18 18:42:01,438 INFO L116 LiptonReduction]: Number of co-enabled transitions 29100 [2022-04-18 18:42:05,062 INFO L131 LiptonReduction]: Checked pairs total: 87572 [2022-04-18 18:42:05,063 INFO L133 LiptonReduction]: Total number of compositions: 211 [2022-04-18 18:42:05,068 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 88 places, 110 transitions, 242 flow [2022-04-18 18:42:05,364 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 12303 states, 12037 states have (on average 3.5439893661211266) internal successors, (42659), 12302 states have internal predecessors, (42659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:05,401 INFO L276 IsEmpty]: Start isEmpty. Operand has 12303 states, 12037 states have (on average 3.5439893661211266) internal successors, (42659), 12302 states have internal predecessors, (42659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:05,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 18:42:05,405 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:42:05,406 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 18:42:05,406 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-04-18 18:42:05,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:42:05,410 INFO L85 PathProgramCache]: Analyzing trace with hash 31149374, now seen corresponding path program 1 times [2022-04-18 18:42:05,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:42:05,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956162464] [2022-04-18 18:42:05,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:42:05,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:42:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:42:05,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:42:05,527 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:42:05,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956162464] [2022-04-18 18:42:05,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956162464] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:42:05,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:42:05,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:42:05,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642149009] [2022-04-18 18:42:05,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:42:05,532 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:42:05,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:42:05,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:42:05,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:42:05,606 INFO L87 Difference]: Start difference. First operand has 12303 states, 12037 states have (on average 3.5439893661211266) internal successors, (42659), 12302 states have internal predecessors, (42659), 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) Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:05,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:42:05,801 INFO L93 Difference]: Finished difference Result 9995 states and 28270 transitions. [2022-04-18 18:42:05,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:42:05,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 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) Word has length 4 [2022-04-18 18:42:05,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:42:05,859 INFO L225 Difference]: With dead ends: 9995 [2022-04-18 18:42:05,860 INFO L226 Difference]: Without dead ends: 9699 [2022-04-18 18:42:05,860 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:42:05,863 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 34 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:42:05,863 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 72 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:42:05,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9699 states. [2022-04-18 18:42:06,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9699 to 9699. [2022-04-18 18:42:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9699 states, 9542 states have (on average 2.872249004401593) internal successors, (27407), 9698 states have internal predecessors, (27407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:06,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9699 states to 9699 states and 27407 transitions. [2022-04-18 18:42:06,216 INFO L78 Accepts]: Start accepts. Automaton has 9699 states and 27407 transitions. Word has length 4 [2022-04-18 18:42:06,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:42:06,216 INFO L478 AbstractCegarLoop]: Abstraction has 9699 states and 27407 transitions. [2022-04-18 18:42:06,216 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-18 18:42:06,218 INFO L276 IsEmpty]: Start isEmpty. Operand 9699 states and 27407 transitions. [2022-04-18 18:42:06,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-04-18 18:42:06,218 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:42:06,218 INFO L499 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2022-04-18 18:42:06,218 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:42:06,219 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2022-04-18 18:42:06,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:42:06,221 INFO L85 PathProgramCache]: Analyzing trace with hash -107337056, now seen corresponding path program 1 times [2022-04-18 18:42:06,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:42:06,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603808775] [2022-04-18 18:42:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:42:06,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:42:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:42:06,265 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-18 18:42:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-18 18:42:06,291 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-04-18 18:42:06,292 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-18 18:42:06,293 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2022-04-18 18:42:06,294 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2022-04-18 18:42:06,294 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2022-04-18 18:42:06,294 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2022-04-18 18:42:06,295 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2022-04-18 18:42:06,295 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2022-04-18 18:42:06,295 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2022-04-18 18:42:06,295 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2022-04-18 18:42:06,295 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 24 remaining) [2022-04-18 18:42:06,296 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2022-04-18 18:42:06,296 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2022-04-18 18:42:06,296 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2022-04-18 18:42:06,296 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2022-04-18 18:42:06,296 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2022-04-18 18:42:06,297 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2022-04-18 18:42:06,297 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2022-04-18 18:42:06,297 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2022-04-18 18:42:06,297 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2022-04-18 18:42:06,338 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2022-04-18 18:42:06,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2022-04-18 18:42:06,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2022-04-18 18:42:06,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2022-04-18 18:42:06,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2022-04-18 18:42:06,339 INFO L788 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2022-04-18 18:42:06,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 18:42:06,341 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-18 18:42:06,342 WARN L232 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-04-18 18:42:06,342 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-04-18 18:42:06,374 INFO L135 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2022-04-18 18:42:06,375 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:42:06,376 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-18 18:42:06,376 INFO L341 AbstractCegarLoop]: Starting to check reachability of 34 error locations. [2022-04-18 18:42:06,379 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:42:06,379 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 361 places, 412 transitions, 872 flow [2022-04-18 18:42:06,379 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 361 places, 412 transitions, 872 flow [2022-04-18 18:42:06,380 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 361 places, 412 transitions, 872 flow [2022-04-18 18:42:06,617 INFO L129 PetriNetUnfolder]: 197/1423 cut-off events. [2022-04-18 18:42:06,617 INFO L130 PetriNetUnfolder]: For 72/72 co-relation queries the response was YES. [2022-04-18 18:42:06,643 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1520 conditions, 1423 events. 197/1423 cut-off events. For 72/72 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 9387 event pairs, 1 based on Foata normal form. 0/1167 useless extension candidates. Maximal degree in co-relation 857. Up to 32 conditions per place. [2022-04-18 18:42:06,724 INFO L116 LiptonReduction]: Number of co-enabled transitions 106200 [2022-04-18 18:42:12,503 INFO L131 LiptonReduction]: Checked pairs total: 401826 [2022-04-18 18:42:12,503 INFO L133 LiptonReduction]: Total number of compositions: 336 [2022-04-18 18:42:12,504 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 158 places, 201 transitions, 450 flow