./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur --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 --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:10:25,413 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:10:25,416 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:10:25,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:10:25,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:10:25,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:10:25,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:10:25,444 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:10:25,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:10:25,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:10:25,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:10:25,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:10:25,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:10:25,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:10:25,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:10:25,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:10:25,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:10:25,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:10:25,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:10:25,460 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:10:25,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:10:25,464 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:10:25,465 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:10:25,466 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:10:25,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:10:25,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:10:25,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:10:25,472 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:10:25,473 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:10:25,474 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:10:25,474 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:10:25,475 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:10:25,476 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:10:25,477 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:10:25,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:10:25,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:10:25,479 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:10:25,479 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:10:25,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:10:25,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:10:25,481 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:10:25,482 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-26 00:10:25,505 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:10:25,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:10:25,506 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:10:25,506 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:10:25,507 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:10:25,508 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:10:25,508 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:10:25,508 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:10:25,508 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:10:25,508 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:10:25,509 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:10:25,509 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:10:25,509 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:10:25,509 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:10:25,510 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:10:25,510 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:10:25,510 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:10:25,510 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:10:25,511 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:10:25,511 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:10:25,512 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-26 00:10:25,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:10:25,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:10:25,512 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:10:25,512 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:10:25,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:10:25,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:10:25,513 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-26 00:10:25,513 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:10:25,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:10:25,514 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:10:25,514 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:10:25,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:10:25,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:10:25,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:10:25,515 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:10:25,515 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:10:25,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:10:25,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:10:25,516 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:10:25,516 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:10:25,516 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:10:25,516 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:10:25,517 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 509c3c8c1895397e4c0d03f6462ad0ca0ed3ce99b40d08b775ab8473dba5ee1f [2022-11-26 00:10:25,737 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:10:25,762 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:10:25,766 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:10:25,767 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:10:25,768 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:10:25,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-11-26 00:10:28,874 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:10:29,289 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:10:29,290 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i [2022-11-26 00:10:29,304 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur/data/dd40b7568/53835b8864e145c1ad8cdb826471ab7b/FLAGb59d9cb19 [2022-11-26 00:10:29,322 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur/data/dd40b7568/53835b8864e145c1ad8cdb826471ab7b [2022-11-26 00:10:29,325 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:10:29,327 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:10:29,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:10:29,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:10:29,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:10:29,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:10:29" (1/1) ... [2022-11-26 00:10:29,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7532df8d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:29, skipping insertion in model container [2022-11-26 00:10:29,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:10:29" (1/1) ... [2022-11-26 00:10:29,342 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:10:29,384 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:10:29,578 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:10:29,898 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-11-26 00:10:29,905 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-11-26 00:10:29,907 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-11-26 00:10:30,028 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-11-26 00:10:30,029 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-11-26 00:10:30,035 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-11-26 00:10:30,037 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-11-26 00:10:30,052 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:10:30,066 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:10:30,089 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-11-26 00:10:30,149 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39095,39108] [2022-11-26 00:10:30,152 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39180,39193] [2022-11-26 00:10:30,153 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[39232,39245] [2022-11-26 00:10:30,188 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49388,49401] [2022-11-26 00:10:30,193 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49437,49450] [2022-11-26 00:10:30,197 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49565,49578] [2022-11-26 00:10:30,201 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/sv-benchmarks/c/pthread-divine/ring_2w1r-1.i[49623,49636] [2022-11-26 00:10:30,217 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:10:30,324 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:10:30,326 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:30 WrapperNode [2022-11-26 00:10:30,326 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:10:30,331 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:10:30,331 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:10:30,331 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:10:30,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:30" (1/1) ... [2022-11-26 00:10:30,397 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:30" (1/1) ... [2022-11-26 00:10:30,459 INFO L138 Inliner]: procedures = 310, calls = 70, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 349 [2022-11-26 00:10:30,465 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:10:30,466 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:10:30,466 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:10:30,467 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:10:30,476 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:30" (1/1) ... [2022-11-26 00:10:30,477 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:30" (1/1) ... [2022-11-26 00:10:30,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:30" (1/1) ... [2022-11-26 00:10:30,503 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:30" (1/1) ... [2022-11-26 00:10:30,549 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:30" (1/1) ... [2022-11-26 00:10:30,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:30" (1/1) ... [2022-11-26 00:10:30,556 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:30" (1/1) ... [2022-11-26 00:10:30,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:30" (1/1) ... [2022-11-26 00:10:30,563 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:10:30,564 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:10:30,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:10:30,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:10:30,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:30" (1/1) ... [2022-11-26 00:10:30,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:10:30,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:10:30,603 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:10:30,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_042944cd-c98d-4691-a8cb-998351d33855/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:10:30,648 INFO L130 BoogieDeclarations]: Found specification of procedure reader_two [2022-11-26 00:10:30,648 INFO L138 BoogieDeclarations]: Found implementation of procedure reader_two [2022-11-26 00:10:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure writer_fn [2022-11-26 00:10:30,649 INFO L138 BoogieDeclarations]: Found implementation of procedure writer_fn [2022-11-26 00:10:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-26 00:10:30,649 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-26 00:10:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-26 00:10:30,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-26 00:10:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-26 00:10:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:10:30,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:10:30,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:10:30,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:10:30,654 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-26 00:10:30,803 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:10:30,805 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:10:31,803 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:10:31,815 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:10:31,816 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-26 00:10:31,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:10:31 BoogieIcfgContainer [2022-11-26 00:10:31,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:10:31,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:10:31,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:10:31,829 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:10:31,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:10:29" (1/3) ... [2022-11-26 00:10:31,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c09935f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:10:31, skipping insertion in model container [2022-11-26 00:10:31,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:10:30" (2/3) ... [2022-11-26 00:10:31,832 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c09935f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:10:31, skipping insertion in model container [2022-11-26 00:10:31,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:10:31" (3/3) ... [2022-11-26 00:10:31,834 INFO L112 eAbstractionObserver]: Analyzing ICFG ring_2w1r-1.i [2022-11-26 00:10:31,847 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-26 00:10:31,856 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:10:31,857 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2022-11-26 00:10:31,857 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-26 00:10:31,991 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-26 00:10:32,029 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-26 00:10:32,043 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 391 places, 401 transitions, 818 flow [2022-11-26 00:10:32,046 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 391 places, 401 transitions, 818 flow [2022-11-26 00:10:32,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 391 places, 401 transitions, 818 flow [2022-11-26 00:10:32,340 INFO L130 PetriNetUnfolder]: 17/399 cut-off events. [2022-11-26 00:10:32,340 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-26 00:10:32,352 INFO L83 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 908 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. [2022-11-26 00:10:32,378 INFO L119 LiptonReduction]: Number of co-enabled transitions 66944 [2022-11-26 00:10:50,864 INFO L134 LiptonReduction]: Checked pairs total: 1825390 [2022-11-26 00:10:50,865 INFO L136 LiptonReduction]: Total number of compositions: 280 [2022-11-26 00:10:50,881 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 200 places, 205 transitions, 426 flow [2022-11-26 00:10:57,404 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 191891 states, 191267 states have (on average 3.151636194429776) internal successors, (602804), 191890 states have internal predecessors, (602804), 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) [2022-11-26 00:10:57,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:10:57,476 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3722d42e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:10:57,494 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2022-11-26 00:10:57,842 INFO L276 IsEmpty]: Start isEmpty. Operand has 191891 states, 191267 states have (on average 3.151636194429776) internal successors, (602804), 191890 states have internal predecessors, (602804), 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) [2022-11-26 00:10:57,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-26 00:10:57,848 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:10:57,849 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-26 00:10:57,850 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-11-26 00:10:57,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:10:57,858 INFO L85 PathProgramCache]: Analyzing trace with hash 1375, now seen corresponding path program 1 times [2022-11-26 00:10:58,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:10:58,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632933155] [2022-11-26 00:10:58,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:10:58,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:10:58,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:10:58,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:10:58,501 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:10:58,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632933155] [2022-11-26 00:10:58,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632933155] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:10:58,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:10:58,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-26 00:10:58,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370199215] [2022-11-26 00:10:58,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:10:58,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-26 00:10:58,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:10:58,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-26 00:10:58,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-26 00:10:58,798 INFO L87 Difference]: Start difference. First operand has 191891 states, 191267 states have (on average 3.151636194429776) internal successors, (602804), 191890 states have internal predecessors, (602804), 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) [2022-11-26 00:11:01,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:01,723 INFO L93 Difference]: Finished difference Result 191889 states and 587772 transitions. [2022-11-26 00:11:01,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-26 00:11:01,725 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 [2022-11-26 00:11:01,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:02,920 INFO L225 Difference]: With dead ends: 191889 [2022-11-26 00:11:02,920 INFO L226 Difference]: Without dead ends: 191889 [2022-11-26 00:11:02,921 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:11:02,925 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:02,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 147 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:11:03,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191889 states. [2022-11-26 00:11:09,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191889 to 191889. [2022-11-26 00:11:09,962 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) [2022-11-26 00:11:11,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191889 states to 191889 states and 587772 transitions. [2022-11-26 00:11:11,610 INFO L78 Accepts]: Start accepts. Automaton has 191889 states and 587772 transitions. Word has length 1 [2022-11-26 00:11:11,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:11,611 INFO L495 AbstractCegarLoop]: Abstraction has 191889 states and 587772 transitions. [2022-11-26 00:11:11,611 INFO L496 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) [2022-11-26 00:11:11,612 INFO L276 IsEmpty]: Start isEmpty. Operand 191889 states and 587772 transitions. [2022-11-26 00:11:11,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-26 00:11:11,614 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:11,622 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:11:11,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:11:11,623 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-11-26 00:11:11,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:11,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1977151081, now seen corresponding path program 1 times [2022-11-26 00:11:11,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:11,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828419908] [2022-11-26 00:11:11,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:11,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:11,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:11,883 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:11,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828419908] [2022-11-26 00:11:11,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828419908] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:11,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:11,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-26 00:11:11,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882000060] [2022-11-26 00:11:11,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:11,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-26 00:11:11,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:11,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-26 00:11:11,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-26 00:11:11,893 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) [2022-11-26 00:11:15,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:15,384 INFO L93 Difference]: Finished difference Result 353809 states and 1084780 transitions. [2022-11-26 00:11:15,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-26 00:11:15,385 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 [2022-11-26 00:11:15,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:17,179 INFO L225 Difference]: With dead ends: 353809 [2022-11-26 00:11:17,180 INFO L226 Difference]: Without dead ends: 353809 [2022-11-26 00:11:17,180 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:11:17,181 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 173 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:17,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 394 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-26 00:11:18,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353809 states. [2022-11-26 00:11:24,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353809 to 195569. [2022-11-26 00:11:24,919 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) [2022-11-26 00:11:26,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195569 states to 195569 states and 598984 transitions. [2022-11-26 00:11:26,687 INFO L78 Accepts]: Start accepts. Automaton has 195569 states and 598984 transitions. Word has length 11 [2022-11-26 00:11:26,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:11:26,687 INFO L495 AbstractCegarLoop]: Abstraction has 195569 states and 598984 transitions. [2022-11-26 00:11:26,688 INFO L496 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) [2022-11-26 00:11:26,688 INFO L276 IsEmpty]: Start isEmpty. Operand 195569 states and 598984 transitions. [2022-11-26 00:11:26,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-26 00:11:26,691 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:11:26,691 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:11:26,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:11:26,692 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting writer_fnErr0ASSERT_VIOLATIONDATA_RACE === [reader_twoErr0ASSERT_VIOLATIONDATA_RACE, reader_twoErr1ASSERT_VIOLATIONDATA_RACE, reader_twoErr2ASSERT_VIOLATIONDATA_RACE (and 41 more)] === [2022-11-26 00:11:26,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:11:26,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1179616163, now seen corresponding path program 1 times [2022-11-26 00:11:26,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:11:26,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751088550] [2022-11-26 00:11:26,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:11:26,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:11:26,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:11:27,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-26 00:11:27,271 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:11:27,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751088550] [2022-11-26 00:11:27,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751088550] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:11:27,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:11:27,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:11:27,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936661373] [2022-11-26 00:11:27,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:11:27,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:11:27,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:11:27,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:11:27,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:11:27,276 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) [2022-11-26 00:11:31,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:11:31,643 INFO L93 Difference]: Finished difference Result 335257 states and 1028154 transitions. [2022-11-26 00:11:31,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-26 00:11:31,644 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 [2022-11-26 00:11:31,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:11:34,029 INFO L225 Difference]: With dead ends: 335257 [2022-11-26 00:11:34,029 INFO L226 Difference]: Without dead ends: 335257 [2022-11-26 00:11:34,030 INFO L412 NwaCegarLoop]: 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 [2022-11-26 00:11:34,031 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 306 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 1664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:11:34,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 276 Invalid, 1664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-26 00:11:34,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335257 states.