./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.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/pthread-divine/divinefifo_1w1r.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 43c4691e367ff0d8a9949fa90f15eddbc091ab75ed1546de74dafe83c2376639 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:59:23,616 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:59:23,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:59:23,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:59:23,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:59:23,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:59:23,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:59:23,667 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:59:23,669 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:59:23,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:59:23,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:59:23,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:59:23,679 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:59:23,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:59:23,683 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:59:23,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:59:23,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:59:23,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:59:23,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:59:23,697 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:59:23,700 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:59:23,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:59:23,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:59:23,703 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:59:23,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:59:23,709 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:59:23,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:59:23,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:59:23,712 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:59:23,712 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:59:23,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:59:23,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:59:23,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:59:23,717 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:59:23,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:59:23,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:59:23,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:59:23,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:59:23,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:59:23,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:59:23,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:59:23,722 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:59:23,723 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:59:23,757 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:59:23,759 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:59:23,760 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:59:23,760 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:59:23,760 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:59:23,761 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:59:23,761 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:59:23,761 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:59:23,761 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:59:23,762 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:59:23,762 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:59:23,762 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:59:23,763 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:59:23,763 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:59:23,763 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:59:23,763 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:59:23,763 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:59:23,764 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:59:23,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:59:23,765 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:59:23,765 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:59:23,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:59:23,766 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:59:23,766 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:59:23,766 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:59:23,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:59:23,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:59:23,767 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:59:23,767 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:59:23,767 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:59:23,767 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:59:23,767 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:59:23,768 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:59:23,768 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:59:23,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:59:23,768 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:59:23,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:59:23,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:59:23,769 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:59:23,769 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:59:23,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:59:23,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:59:23,769 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:59:23,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 43c4691e367ff0d8a9949fa90f15eddbc091ab75ed1546de74dafe83c2376639 [2022-04-18 18:59:24,022 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:59:24,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:59:24,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:59:24,056 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:59:24,056 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:59:24,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i [2022-04-18 18:59:24,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e966fa729/cc163569bcdd479c9c94e91653c0f37d/FLAG2cdddbfdb [2022-04-18 18:59:24,685 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:59:24,686 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i [2022-04-18 18:59:24,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e966fa729/cc163569bcdd479c9c94e91653c0f37d/FLAG2cdddbfdb [2022-04-18 18:59:25,132 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/e966fa729/cc163569bcdd479c9c94e91653c0f37d [2022-04-18 18:59:25,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:59:25,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:59:25,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:59:25,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:59:25,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:59:25,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:59:25" (1/1) ... [2022-04-18 18:59:25,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ad6cca4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:59:25, skipping insertion in model container [2022-04-18 18:59:25,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:59:25" (1/1) ... [2022-04-18 18:59:25,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:59:25,209 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:59:25,326 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-04-18 18:59:25,603 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[47275,47288] [2022-04-18 18:59:25,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[47463,47476] [2022-04-18 18:59:25,629 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[48230,48243] [2022-04-18 18:59:25,636 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[48344,48357] [2022-04-18 18:59:25,644 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[48781,48794] [2022-04-18 18:59:25,645 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[48837,48850] [2022-04-18 18:59:25,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[49349,49362] [2022-04-18 18:59:25,653 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[49408,49421] [2022-04-18 18:59:25,654 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[49487,49500] [2022-04-18 18:59:25,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:59:25,661 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:59:25,670 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-04-18 18:59:25,714 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[47275,47288] [2022-04-18 18:59:25,725 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[47463,47476] [2022-04-18 18:59:25,734 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[48230,48243] [2022-04-18 18:59:25,739 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[48344,48357] [2022-04-18 18:59:25,745 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[48781,48794] [2022-04-18 18:59:25,746 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[48837,48850] [2022-04-18 18:59:25,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[49349,49362] [2022-04-18 18:59:25,751 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[49408,49421] [2022-04-18 18:59:25,752 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo_1w1r.i[49487,49500] [2022-04-18 18:59:25,752 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:59:25,790 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:59:25,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:59:25 WrapperNode [2022-04-18 18:59:25,790 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:59:25,791 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:59:25,791 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:59:25,791 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:59:25,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:59:25" (1/1) ... [2022-04-18 18:59:25,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:59:25" (1/1) ... [2022-04-18 18:59:25,902 INFO L137 Inliner]: procedures = 278, calls = 101, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 924 [2022-04-18 18:59:25,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:59:25,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:59:25,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:59:25,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:59:25,911 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:59:25" (1/1) ... [2022-04-18 18:59:25,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:59:25" (1/1) ... [2022-04-18 18:59:25,934 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:59:25" (1/1) ... [2022-04-18 18:59:25,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:59:25" (1/1) ... [2022-04-18 18:59:26,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:59:25" (1/1) ... [2022-04-18 18:59:26,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:59:25" (1/1) ... [2022-04-18 18:59:26,040 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:59:25" (1/1) ... [2022-04-18 18:59:26,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:59:26,051 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:59:26,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:59:26,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:59:26,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:59:25" (1/1) ... [2022-04-18 18:59:26,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:59:26,077 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:59:26,093 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 18:59:26,115 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 18:59:26,130 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-04-18 18:59:26,132 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-04-18 18:59:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:59:26,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-18 18:59:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:59:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:59:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:59:26,133 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 18:59:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:59:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-18 18:59:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:59:26,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:59:26,134 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:59:26,136 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 18:59:26,336 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:59:26,342 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:59:27,563 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:59:27,580 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:59:27,580 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-04-18 18:59:27,584 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:59:27 BoogieIcfgContainer [2022-04-18 18:59:27,584 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:59:27,586 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:59:27,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:59:27,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:59:27,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:59:25" (1/3) ... [2022-04-18 18:59:27,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20002864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:59:27, skipping insertion in model container [2022-04-18 18:59:27,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:59:25" (2/3) ... [2022-04-18 18:59:27,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20002864 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:59:27, skipping insertion in model container [2022-04-18 18:59:27,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:59:27" (3/3) ... [2022-04-18 18:59:27,593 INFO L111 eAbstractionObserver]: Analyzing ICFG divinefifo_1w1r.i [2022-04-18 18:59:27,598 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:59:27,599 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:59:27,599 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 97 error locations. [2022-04-18 18:59:27,599 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:59:27,739 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 18:59:27,800 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:59:27,806 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 18:59:27,807 INFO L341 AbstractCegarLoop]: Starting to check reachability of 113 error locations. [2022-04-18 18:59:27,829 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:59:27,840 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1072 places, 1100 transitions, 2208 flow [2022-04-18 18:59:27,842 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 1072 places, 1100 transitions, 2208 flow [2022-04-18 18:59:27,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1072 places, 1100 transitions, 2208 flow [2022-04-18 18:59:28,235 INFO L129 PetriNetUnfolder]: 32/1099 cut-off events. [2022-04-18 18:59:28,236 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 18:59:28,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1104 conditions, 1099 events. 32/1099 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3111 event pairs, 0 based on Foata normal form. 0/970 useless extension candidates. Maximal degree in co-relation 792. Up to 3 conditions per place. [2022-04-18 18:59:28,347 INFO L116 LiptonReduction]: Number of co-enabled transitions 209664 [2022-04-18 19:00:44,931 WARN L232 SmtUtils]: Spent 5.18s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:00:56,467 WARN L232 SmtUtils]: Spent 7.04s on a formula simplification that was a NOOP. DAG size: 136 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:01:18,804 WARN L232 SmtUtils]: Spent 18.81s on a formula simplification. DAG size of input: 173 DAG size of output: 169 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:01:25,279 WARN L232 SmtUtils]: Spent 6.47s on a formula simplification that was a NOOP. DAG size: 147 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:01:43,757 WARN L232 SmtUtils]: Spent 18.48s on a formula simplification. DAG size of input: 176 DAG size of output: 172 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:01:51,352 WARN L232 SmtUtils]: Spent 7.59s on a formula simplification that was a NOOP. DAG size: 150 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:06:30,540 WARN L232 SmtUtils]: Spent 4.36m on a formula simplification. DAG size of input: 250 DAG size of output: 241 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:08:24,353 WARN L232 SmtUtils]: Spent 1.90m on a formula simplification that was a NOOP. DAG size: 228 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:12:59,809 WARN L232 SmtUtils]: Spent 4.59m on a formula simplification. DAG size of input: 253 DAG size of output: 244 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) Killed by 15