./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo-bug_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-bug_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 32482febe38d61a93fd0705f3ad97c9c1ccc991b1238f75e4d1dd99bfb01c35e --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:57:51,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:57:51,103 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:57:51,137 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:57:51,138 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:57:51,139 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:57:51,140 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:57:51,145 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:57:51,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:57:51,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:57:51,152 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:57:51,154 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:57:51,154 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:57:51,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:57:51,157 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:57:51,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:57:51,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:57:51,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:57:51,163 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:57:51,168 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:57:51,170 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:57:51,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:57:51,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:57:51,172 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:57:51,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:57:51,179 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:57:51,180 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:57:51,180 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:57:51,181 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:57:51,182 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:57:51,183 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:57:51,183 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:57:51,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:57:51,185 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:57:51,186 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:57:51,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:57:51,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:57:51,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:57:51,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:57:51,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:57:51,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:57:51,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:57:51,192 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:57:51,228 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:57:51,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:57:51,229 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:57:51,229 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:57:51,230 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:57:51,230 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:57:51,230 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:57:51,231 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:57:51,231 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:57:51,231 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:57:51,232 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:57:51,232 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:57:51,232 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:57:51,232 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:57:51,232 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:57:51,233 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:57:51,234 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:57:51,234 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:57:51,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:57:51,235 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:57:51,235 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:57:51,236 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:57:51,236 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:57:51,236 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:57:51,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:57:51,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:57:51,237 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:57:51,237 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:57:51,237 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:57:51,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:57:51,237 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:57:51,238 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:57:51,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:57:51,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:57:51,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:57:51,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:57:51,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:57:51,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:57:51,239 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:57:51,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:57:51,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:57:51,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:57:51,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:57:51,240 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32482febe38d61a93fd0705f3ad97c9c1ccc991b1238f75e4d1dd99bfb01c35e [2022-04-18 18:57:51,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:57:51,502 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:57:51,504 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:57:51,505 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:57:51,507 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:57:51,508 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo-bug_1w1r.i [2022-04-18 18:57:51,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff46221d1/3b0988c65462458294b88b9dd8d50d33/FLAGee432bb15 [2022-04-18 18:57:52,068 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:57:52,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/divinefifo-bug_1w1r.i [2022-04-18 18:57:52,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff46221d1/3b0988c65462458294b88b9dd8d50d33/FLAGee432bb15 [2022-04-18 18:57:52,376 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ff46221d1/3b0988c65462458294b88b9dd8d50d33 [2022-04-18 18:57:52,378 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:57:52,379 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:57:52,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:57:52,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:57:52,385 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:57:52,386 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:57:52" (1/1) ... [2022-04-18 18:57:52,387 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@feab5f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:52, skipping insertion in model container [2022-04-18 18:57:52,387 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:57:52" (1/1) ... [2022-04-18 18:57:52,393 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:57:52,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:57:52,557 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-04-18 18:57:52,829 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-bug_1w1r.i[47275,47288] [2022-04-18 18:57:52,837 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-bug_1w1r.i[47463,47476] [2022-04-18 18:57:52,852 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-bug_1w1r.i[48230,48243] [2022-04-18 18:57:52,857 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-bug_1w1r.i[48344,48357] [2022-04-18 18:57:52,865 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-bug_1w1r.i[48816,48829] [2022-04-18 18:57:52,866 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-bug_1w1r.i[48872,48885] [2022-04-18 18:57:52,872 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-bug_1w1r.i[49384,49397] [2022-04-18 18:57:52,873 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-bug_1w1r.i[49443,49456] [2022-04-18 18:57:52,874 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-bug_1w1r.i[49522,49535] [2022-04-18 18:57:52,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:57:52,880 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:57:52,896 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-04-18 18:57:52,926 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-bug_1w1r.i[47275,47288] [2022-04-18 18:57:52,931 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-bug_1w1r.i[47463,47476] [2022-04-18 18:57:52,939 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-bug_1w1r.i[48230,48243] [2022-04-18 18:57:52,940 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-bug_1w1r.i[48344,48357] [2022-04-18 18:57:52,945 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-bug_1w1r.i[48816,48829] [2022-04-18 18:57:52,945 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-bug_1w1r.i[48872,48885] [2022-04-18 18:57:52,950 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-bug_1w1r.i[49384,49397] [2022-04-18 18:57:52,950 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-bug_1w1r.i[49443,49456] [2022-04-18 18:57:52,951 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-bug_1w1r.i[49522,49535] [2022-04-18 18:57:52,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:57:52,992 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:57:52,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:52 WrapperNode [2022-04-18 18:57:52,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:57:52,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:57:52,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:57:52,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:57:53,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:52" (1/1) ... [2022-04-18 18:57:53,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:52" (1/1) ... [2022-04-18 18:57:53,123 INFO L137 Inliner]: procedures = 278, calls = 103, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 945 [2022-04-18 18:57:53,123 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:57:53,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:57:53,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:57:53,124 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:57:53,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:52" (1/1) ... [2022-04-18 18:57:53,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:52" (1/1) ... [2022-04-18 18:57:53,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:52" (1/1) ... [2022-04-18 18:57:53,158 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:52" (1/1) ... [2022-04-18 18:57:53,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:52" (1/1) ... [2022-04-18 18:57:53,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:52" (1/1) ... [2022-04-18 18:57:53,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:52" (1/1) ... [2022-04-18 18:57:53,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:57:53,272 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:57:53,272 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:57:53,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:57:53,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:52" (1/1) ... [2022-04-18 18:57:53,280 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:57:53,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:57:53,308 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 18:57:53,319 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 18:57:53,356 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-04-18 18:57:53,357 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-04-18 18:57:53,357 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:57:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-04-18 18:57:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:57:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:57:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:57:53,358 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-04-18 18:57:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:57:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-04-18 18:57:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:57:53,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:57:53,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:57:53,361 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 18:57:53,564 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:57:53,565 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:57:54,636 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:57:54,647 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:57:54,648 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-04-18 18:57:54,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:57:54 BoogieIcfgContainer [2022-04-18 18:57:54,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:57:54,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:57:54,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:57:54,654 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:57:54,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:57:52" (1/3) ... [2022-04-18 18:57:54,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf50b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:57:54, skipping insertion in model container [2022-04-18 18:57:54,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:57:52" (2/3) ... [2022-04-18 18:57:54,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cf50b60 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:57:54, skipping insertion in model container [2022-04-18 18:57:54,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:57:54" (3/3) ... [2022-04-18 18:57:54,658 INFO L111 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.i [2022-04-18 18:57:54,662 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:57:54,663 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:57:54,663 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 99 error locations. [2022-04-18 18:57:54,663 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:57:54,820 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-04-18 18:57:54,855 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:57:54,860 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 18:57:54,861 INFO L341 AbstractCegarLoop]: Starting to check reachability of 115 error locations. [2022-04-18 18:57:54,880 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:57:54,890 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 1095 places, 1124 transitions, 2256 flow [2022-04-18 18:57:54,893 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 1095 places, 1124 transitions, 2256 flow [2022-04-18 18:57:54,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 1095 places, 1124 transitions, 2256 flow [2022-04-18 18:57:55,251 INFO L129 PetriNetUnfolder]: 33/1123 cut-off events. [2022-04-18 18:57:55,251 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-04-18 18:57:55,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1128 conditions, 1123 events. 33/1123 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 3235 event pairs, 0 based on Foata normal form. 0/991 useless extension candidates. Maximal degree in co-relation 816. Up to 3 conditions per place. [2022-04-18 18:57:55,380 INFO L116 LiptonReduction]: Number of co-enabled transitions 217728 [2022-04-18 18:59:43,340 WARN L232 SmtUtils]: Spent 28.20s on a formula simplification. DAG size of input: 196 DAG size of output: 190 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 18:59:54,435 WARN L232 SmtUtils]: Spent 11.09s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:00:13,284 WARN L232 SmtUtils]: Spent 18.85s on a formula simplification. DAG size of input: 196 DAG size of output: 190 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:00:25,769 WARN L232 SmtUtils]: Spent 12.48s on a formula simplification that was a NOOP. DAG size: 178 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:00:33,904 WARN L232 SmtUtils]: Spent 8.00s on a formula simplification. DAG size of input: 134 DAG size of output: 131 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:00:44,590 WARN L232 SmtUtils]: Spent 8.44s on a formula simplification. DAG size of input: 137 DAG size of output: 134 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:01:02,593 WARN L232 SmtUtils]: Spent 15.84s on a formula simplification. DAG size of input: 162 DAG size of output: 160 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:01:09,032 WARN L232 SmtUtils]: Spent 6.44s on a formula simplification that was a NOOP. DAG size: 142 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:01:27,031 WARN L232 SmtUtils]: Spent 18.00s on a formula simplification. DAG size of input: 165 DAG size of output: 163 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:01:33,851 WARN L232 SmtUtils]: Spent 6.82s on a formula simplification that was a NOOP. DAG size: 145 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:02:32,299 WARN L232 SmtUtils]: Spent 48.68s on a formula simplification. DAG size of input: 224 DAG size of output: 215 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:02:40,039 WARN L232 SmtUtils]: Spent 7.74s on a formula simplification that was a NOOP. DAG size: 205 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:02:55,075 WARN L232 SmtUtils]: Spent 15.03s on a formula simplification. DAG size of input: 224 DAG size of output: 215 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:03:15,835 WARN L232 SmtUtils]: Spent 20.76s on a formula simplification that was a NOOP. DAG size: 205 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:06:56,119 WARN L232 SmtUtils]: Spent 3.49m on a formula simplification. DAG size of input: 310 DAG size of output: 296 (called from [L 279] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-04-18 19:08:09,452 WARN L232 SmtUtils]: Spent 1.22m on a formula simplification that was a NOOP. DAG size: 274 (called from [L 316] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) Killed by 15