./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-1.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/ring_2w1r-1.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 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 19:02:04,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 19:02:04,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 19:02:04,893 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 19:02:04,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 19:02:04,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 19:02:04,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 19:02:04,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 19:02:04,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 19:02:04,904 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 19:02:04,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 19:02:04,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 19:02:04,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 19:02:04,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 19:02:04,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 19:02:04,915 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 19:02:04,916 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 19:02:04,917 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 19:02:04,918 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 19:02:04,922 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 19:02:04,923 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 19:02:04,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 19:02:04,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 19:02:04,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 19:02:04,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 19:02:04,930 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 19:02:04,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 19:02:04,930 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 19:02:04,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 19:02:04,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 19:02:04,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 19:02:04,932 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 19:02:04,933 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 19:02:04,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 19:02:04,934 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 19:02:04,935 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 19:02:04,935 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 19:02:04,935 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 19:02:04,936 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 19:02:04,936 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 19:02:04,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 19:02:04,937 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 19:02:04,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 19:02:04,966 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 19:02:04,966 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 19:02:04,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 19:02:04,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 19:02:04,967 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 19:02:04,967 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 19:02:04,967 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 19:02:04,968 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 19:02:04,968 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 19:02:04,968 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 19:02:04,968 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 19:02:04,969 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 19:02:04,969 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 19:02:04,969 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 19:02:04,969 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 19:02:04,969 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 19:02:04,969 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 19:02:04,969 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 19:02:04,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 19:02:04,970 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 19:02:04,971 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 19:02:04,972 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 19:02:04,972 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 19:02:04,972 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 19:02:04,972 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 19:02:04,972 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 19:02:04,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 19:02:04,972 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 19:02:04,973 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 19:02:04,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 19:02:04,973 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 19:02:04,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 19:02:04,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 19:02:04,973 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 19:02:04,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:02:04,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 19:02:04,974 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 19:02:04,974 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 19:02:04,974 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 19:02:04,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 19:02:04,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 19:02:04,975 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 19:02:04,975 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 19:02:04,975 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f [2022-04-18 19:02:05,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 19:02:05,189 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 19:02:05,191 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 19:02:05,192 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 19:02:05,192 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 19:02:05,194 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i [2022-04-18 19:02:05,237 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8184abcf/4f7c43c638634062a0d30ea998c5550d/FLAG06fe4be84 [2022-04-18 19:02:05,637 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 19:02:05,638 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-divine/ring_2w1r-1.i [2022-04-18 19:02:05,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8184abcf/4f7c43c638634062a0d30ea998c5550d/FLAG06fe4be84 [2022-04-18 19:02:05,977 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c8184abcf/4f7c43c638634062a0d30ea998c5550d [2022-04-18 19:02:05,979 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 19:02:05,980 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 19:02:05,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 19:02:05,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 19:02:05,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 19:02:05,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:02:05" (1/1) ... [2022-04-18 19:02:05,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d0228ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:02:05, skipping insertion in model container [2022-04-18 19:02:05,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 07:02:05" (1/1) ... [2022-04-18 19:02:05,991 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 19:02:06,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 19:02:06,155 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-04-18 19:02:06,344 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/ring_2w1r-1.i[39095,39108] [2022-04-18 19:02:06,346 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/ring_2w1r-1.i[39180,39193] [2022-04-18 19:02:06,346 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/ring_2w1r-1.i[39232,39245] [2022-04-18 19:02:06,416 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/ring_2w1r-1.i[49388,49401] [2022-04-18 19:02:06,417 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/ring_2w1r-1.i[49437,49450] [2022-04-18 19:02:06,418 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/ring_2w1r-1.i[49565,49578] [2022-04-18 19:02:06,419 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/ring_2w1r-1.i[49623,49636] [2022-04-18 19:02:06,426 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:02:06,433 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 19:02:06,446 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-04-18 19:02:06,468 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/ring_2w1r-1.i[39095,39108] [2022-04-18 19:02:06,469 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/ring_2w1r-1.i[39180,39193] [2022-04-18 19:02:06,470 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/ring_2w1r-1.i[39232,39245] [2022-04-18 19:02:06,477 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/ring_2w1r-1.i[49388,49401] [2022-04-18 19:02:06,482 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/ring_2w1r-1.i[49437,49450] [2022-04-18 19:02:06,489 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/ring_2w1r-1.i[49565,49578] [2022-04-18 19:02:06,490 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/ring_2w1r-1.i[49623,49636] [2022-04-18 19:02:06,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 19:02:06,552 INFO L208 MainTranslator]: Completed translation [2022-04-18 19:02:06,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:02:06 WrapperNode [2022-04-18 19:02:06,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 19:02:06,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 19:02:06,556 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 19:02:06,556 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 19:02:06,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:02:06" (1/1) ... [2022-04-18 19:02:06,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:02:06" (1/1) ... [2022-04-18 19:02:06,626 INFO L137 Inliner]: procedures = 310, calls = 70, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 349 [2022-04-18 19:02:06,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 19:02:06,628 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 19:02:06,628 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 19:02:06,628 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 19:02:06,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:02:06" (1/1) ... [2022-04-18 19:02:06,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:02:06" (1/1) ... [2022-04-18 19:02:06,644 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:02:06" (1/1) ... [2022-04-18 19:02:06,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:02:06" (1/1) ... [2022-04-18 19:02:06,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:02:06" (1/1) ... [2022-04-18 19:02:06,682 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:02:06" (1/1) ... [2022-04-18 19:02:06,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:02:06" (1/1) ... [2022-04-18 19:02:06,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 19:02:06,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 19:02:06,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 19:02:06,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 19:02:06,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:02:06" (1/1) ... [2022-04-18 19:02:06,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 19:02:06,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 19:02:06,745 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 19:02:06,766 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 19:02:06,772 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-04-18 19:02:06,772 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-04-18 19:02:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-04-18 19:02:06,778 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-04-18 19:02:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 19:02:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 19:02:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 19:02:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 19:02:06,778 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 19:02:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 19:02:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 19:02:06,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 19:02:06,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 19:02:06,781 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 19:02:06,939 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 19:02:06,940 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 19:02:07,414 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 19:02:07,422 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 19:02:07,422 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-04-18 19:02:07,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:02:07 BoogieIcfgContainer [2022-04-18 19:02:07,431 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 19:02:07,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 19:02:07,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 19:02:07,445 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 19:02:07,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 07:02:05" (1/3) ... [2022-04-18 19:02:07,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e29fd6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:02:07, skipping insertion in model container [2022-04-18 19:02:07,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 07:02:06" (2/3) ... [2022-04-18 19:02:07,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e29fd6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 07:02:07, skipping insertion in model container [2022-04-18 19:02:07,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 07:02:07" (3/3) ... [2022-04-18 19:02:07,447 INFO L111 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2022-04-18 19:02:07,450 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 19:02:07,451 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 19:02:07,451 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-04-18 19:02:07,451 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 19:02:07,569 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-04-18 19:02:07,613 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 19:02:07,617 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 19:02:07,618 INFO L341 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-04-18 19:02:07,629 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 19:02:07,637 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 391 places, 401 transitions, 818 flow [2022-04-18 19:02:07,639 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 391 places, 401 transitions, 818 flow [2022-04-18 19:02:07,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 391 places, 401 transitions, 818 flow [2022-04-18 19:02:07,786 INFO L129 PetriNetUnfolder]: 17/399 cut-off events. [2022-04-18 19:02:07,786 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-04-18 19:02:07,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 399 events. 17/399 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 915 event pairs, 0 based on Foata normal form. 0/356 useless extension candidates. Maximal degree in co-relation 327. Up to 2 conditions per place. [2022-04-18 19:02:07,826 INFO L116 LiptonReduction]: Number of co-enabled transitions 66944 [2022-04-18 19:02:19,687 INFO L131 LiptonReduction]: Checked pairs total: 1828893 [2022-04-18 19:02:19,688 INFO L133 LiptonReduction]: Total number of compositions: 272 [2022-04-18 19:02:19,701 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 200 places, 204 transitions, 424 flow [2022-04-18 19:02:23,584 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 191891 states, 191267 states have (on average 3.139119659951795) internal successors, (600410), 191890 states have internal predecessors, (600410), 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 19:02:23,849 INFO L276 IsEmpty]: Start isEmpty. Operand has 191891 states, 191267 states have (on average 3.139119659951795) internal successors, (600410), 191890 states have internal predecessors, (600410), 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 19:02:23,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-04-18 19:02:23,853 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:02:23,853 INFO L499 BasicCegarLoop]: trace histogram [1] [2022-04-18 19:02:23,854 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-04-18 19:02:23,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:02:23,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1372, now seen corresponding path program 1 times [2022-04-18 19:02:23,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:02:23,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280436867] [2022-04-18 19:02:23,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:02:23,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:02:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:02:24,228 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 19:02:24,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:02:24,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280436867] [2022-04-18 19:02:24,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280436867] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:02:24,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:02:24,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-04-18 19:02:24,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846812342] [2022-04-18 19:02:24,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:02:24,245 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 19:02:24,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:02:24,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 19:02:24,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:02:24,618 INFO L87 Difference]: Start difference. First operand has 191891 states, 191267 states have (on average 3.139119659951795) internal successors, (600410), 191890 states have internal predecessors, (600410), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 19:02:26,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:02:26,446 INFO L93 Difference]: Finished difference Result 191889 states and 587772 transitions. [2022-04-18 19:02:26,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 19:02:26,449 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 1 [2022-04-18 19:02:26,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:02:27,656 INFO L225 Difference]: With dead ends: 191889 [2022-04-18 19:02:27,657 INFO L226 Difference]: Without dead ends: 191889 [2022-04-18 19:02:27,657 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 19:02:27,659 INFO L913 BasicCegarLoop]: 150 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:02:27,660 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 150 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:02:28,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191889 states. [2022-04-18 19:02:32,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191889 to 191889. [2022-04-18 19:02:32,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191889 states, 191267 states have (on average 3.073044487548819) internal successors, (587772), 191888 states have internal predecessors, (587772), 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 19:02:33,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191889 states to 191889 states and 587772 transitions. [2022-04-18 19:02:33,941 INFO L78 Accepts]: Start accepts. Automaton has 191889 states and 587772 transitions. Word has length 1 [2022-04-18 19:02:33,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:02:33,941 INFO L478 AbstractCegarLoop]: Abstraction has 191889 states and 587772 transitions. [2022-04-18 19:02:33,941 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 19:02:33,942 INFO L276 IsEmpty]: Start isEmpty. Operand 191889 states and 587772 transitions. [2022-04-18 19:02:33,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-18 19:02:33,943 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:02:33,944 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:02:33,944 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 19:02:33,944 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-04-18 19:02:33,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:02:33,945 INFO L85 PathProgramCache]: Analyzing trace with hash 643829155, now seen corresponding path program 1 times [2022-04-18 19:02:33,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:02:33,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823725907] [2022-04-18 19:02:33,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:02:33,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:02:33,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:02:34,069 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 19:02:34,070 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:02:34,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823725907] [2022-04-18 19:02:34,070 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823725907] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:02:34,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:02:34,070 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-18 19:02:34,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73809649] [2022-04-18 19:02:34,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:02:34,071 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 19:02:34,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:02:34,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 19:02:34,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 19:02:34,072 INFO L87 Difference]: Start difference. First operand 191889 states and 587772 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 19:02:36,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:02:36,865 INFO L93 Difference]: Finished difference Result 353809 states and 1084780 transitions. [2022-04-18 19:02:36,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 19:02:36,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-04-18 19:02:36,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:02:38,544 INFO L225 Difference]: With dead ends: 353809 [2022-04-18 19:02:38,544 INFO L226 Difference]: Without dead ends: 353809 [2022-04-18 19:02:38,544 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 19:02:38,546 INFO L913 BasicCegarLoop]: 251 mSDtfsCounter, 173 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 19:02:38,546 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 401 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 19:02:39,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353809 states. [2022-04-18 19:02:44,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353809 to 195569. [2022-04-18 19:02:45,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195569 states, 194947 states have (on average 3.0725479232817126) internal successors, (598984), 195568 states have internal predecessors, (598984), 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 19:02:46,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195569 states to 195569 states and 598984 transitions. [2022-04-18 19:02:46,353 INFO L78 Accepts]: Start accepts. Automaton has 195569 states and 598984 transitions. Word has length 11 [2022-04-18 19:02:46,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:02:46,353 INFO L478 AbstractCegarLoop]: Abstraction has 195569 states and 598984 transitions. [2022-04-18 19:02:46,353 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 19:02:46,354 INFO L276 IsEmpty]: Start isEmpty. Operand 195569 states and 598984 transitions. [2022-04-18 19:02:46,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-18 19:02:46,355 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:02:46,355 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:02:46,356 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-18 19:02:46,356 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-04-18 19:02:46,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:02:46,359 INFO L85 PathProgramCache]: Analyzing trace with hash -911951410, now seen corresponding path program 1 times [2022-04-18 19:02:46,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:02:46,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871566859] [2022-04-18 19:02:46,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:02:46,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:02:46,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:02:46,501 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 19:02:46,502 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:02:46,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871566859] [2022-04-18 19:02:46,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871566859] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:02:46,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:02:46,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 19:02:46,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306272793] [2022-04-18 19:02:46,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:02:46,503 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 19:02:46,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:02:46,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 19:02:46,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:02:46,504 INFO L87 Difference]: Start difference. First operand 195569 states and 598984 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 19:02:49,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:02:49,424 INFO L93 Difference]: Finished difference Result 316761 states and 971908 transitions. [2022-04-18 19:02:49,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 19:02:49,425 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 12 [2022-04-18 19:02:49,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 19:02:51,382 INFO L225 Difference]: With dead ends: 316761 [2022-04-18 19:02:51,382 INFO L226 Difference]: Without dead ends: 316761 [2022-04-18 19:02:51,383 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:02:51,383 INFO L913 BasicCegarLoop]: 196 mSDtfsCounter, 282 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-04-18 19:02:51,384 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 298 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-04-18 19:02:51,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316761 states. [2022-04-18 19:02:57,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316761 to 239609. [2022-04-18 19:02:58,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239609 states, 238987 states have (on average 3.067815404185165) internal successors, (733168), 239608 states have internal predecessors, (733168), 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 19:02:59,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239609 states to 239609 states and 733168 transitions. [2022-04-18 19:02:59,072 INFO L78 Accepts]: Start accepts. Automaton has 239609 states and 733168 transitions. Word has length 12 [2022-04-18 19:02:59,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 19:02:59,072 INFO L478 AbstractCegarLoop]: Abstraction has 239609 states and 733168 transitions. [2022-04-18 19:02:59,073 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 19:02:59,073 INFO L276 IsEmpty]: Start isEmpty. Operand 239609 states and 733168 transitions. [2022-04-18 19:02:59,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-18 19:02:59,074 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 19:02:59,074 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-18 19:02:59,074 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-04-18 19:02:59,075 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting writer_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-04-18 19:02:59,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 19:02:59,075 INFO L85 PathProgramCache]: Analyzing trace with hash 901348396, now seen corresponding path program 1 times [2022-04-18 19:02:59,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 19:02:59,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885415672] [2022-04-18 19:02:59,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 19:02:59,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 19:02:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 19:02:59,175 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 19:02:59,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 19:02:59,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885415672] [2022-04-18 19:02:59,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885415672] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 19:02:59,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 19:02:59,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-18 19:02:59,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284165537] [2022-04-18 19:02:59,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 19:02:59,177 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-18 19:02:59,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 19:02:59,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-18 19:02:59,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-04-18 19:02:59,178 INFO L87 Difference]: Start difference. First operand 239609 states and 733168 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 19:03:03,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 19:03:03,293 INFO L93 Difference]: Finished difference Result 407257 states and 1247850 transitions. [2022-04-18 19:03:03,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-18 19:03:03,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 6 states have internal predecessors, (12), 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 12 [2022-04-18 19:03:03,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted.