./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta --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 7b71c781c26c072fdf5838e0877462128517513c3df1f3bde9f2474cb4533ecb --- 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-dbf71c6-m [2022-10-17 17:36:03,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 17:36:03,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 17:36:03,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 17:36:03,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 17:36:03,569 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 17:36:03,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 17:36:03,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 17:36:03,576 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 17:36:03,577 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 17:36:03,578 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 17:36:03,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 17:36:03,581 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 17:36:03,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 17:36:03,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 17:36:03,586 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 17:36:03,587 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 17:36:03,589 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 17:36:03,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 17:36:03,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 17:36:03,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 17:36:03,599 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 17:36:03,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 17:36:03,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 17:36:03,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 17:36:03,608 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 17:36:03,608 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 17:36:03,610 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 17:36:03,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 17:36:03,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 17:36:03,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 17:36:03,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 17:36:03,615 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 17:36:03,616 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 17:36:03,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 17:36:03,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 17:36:03,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 17:36:03,619 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 17:36:03,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 17:36:03,621 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 17:36:03,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 17:36:03,623 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-10-17 17:36:03,688 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 17:36:03,695 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 17:36:03,696 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 17:36:03,697 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 17:36:03,697 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 17:36:03,698 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 17:36:03,699 INFO L138 SettingsManager]: * User list type=DISABLED [2022-10-17 17:36:03,699 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-10-17 17:36:03,699 INFO L138 SettingsManager]: * Explicit value domain=true [2022-10-17 17:36:03,708 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-10-17 17:36:03,710 INFO L138 SettingsManager]: * Octagon Domain=false [2022-10-17 17:36:03,710 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-10-17 17:36:03,710 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-10-17 17:36:03,711 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-10-17 17:36:03,711 INFO L138 SettingsManager]: * Interval Domain=false [2022-10-17 17:36:03,711 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-10-17 17:36:03,711 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-10-17 17:36:03,712 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-10-17 17:36:03,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 17:36:03,713 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 17:36:03,713 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 17:36:03,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 17:36:03,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 17:36:03,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 17:36:03,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-17 17:36:03,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 17:36:03,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-17 17:36:03,715 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-10-17 17:36:03,715 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 17:36:03,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-17 17:36:03,716 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 17:36:03,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-17 17:36:03,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 17:36:03,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 17:36:03,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:36:03,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 17:36:03,718 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-10-17 17:36:03,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 17:36:03,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-17 17:36:03,718 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-10-17 17:36:03,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 17:36:03,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-17 17:36:03,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-10-17 17:36:03,719 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_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b71c781c26c072fdf5838e0877462128517513c3df1f3bde9f2474cb4533ecb [2022-10-17 17:36:04,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 17:36:04,159 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 17:36:04,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 17:36:04,164 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 17:36:04,165 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 17:36:04,167 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i [2022-10-17 17:36:04,275 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta/data/3c4e0d4af/ac9592ba473f4d2f8c608c7a9a2ed092/FLAGa7817a874 [2022-10-17 17:36:04,930 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 17:36:04,931 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i [2022-10-17 17:36:04,958 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta/data/3c4e0d4af/ac9592ba473f4d2f8c608c7a9a2ed092/FLAGa7817a874 [2022-10-17 17:36:05,154 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta/data/3c4e0d4af/ac9592ba473f4d2f8c608c7a9a2ed092 [2022-10-17 17:36:05,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 17:36:05,159 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 17:36:05,160 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 17:36:05,160 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 17:36:05,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 17:36:05,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:36:05" (1/1) ... [2022-10-17 17:36:05,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4837c834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:05, skipping insertion in model container [2022-10-17 17:36:05,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 05:36:05" (1/1) ... [2022-10-17 17:36:05,177 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 17:36:05,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 17:36:05,673 WARN L230 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_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i[30358,30371] [2022-10-17 17:36:05,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:36:05,695 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 17:36:05,768 WARN L230 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_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i[30358,30371] [2022-10-17 17:36:05,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 17:36:05,857 INFO L208 MainTranslator]: Completed translation [2022-10-17 17:36:05,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:05 WrapperNode [2022-10-17 17:36:05,858 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 17:36:05,859 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 17:36:05,859 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 17:36:05,860 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 17:36:05,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:05" (1/1) ... [2022-10-17 17:36:05,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:05" (1/1) ... [2022-10-17 17:36:05,970 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 166 [2022-10-17 17:36:05,972 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 17:36:05,973 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 17:36:05,973 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 17:36:05,973 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 17:36:05,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:05" (1/1) ... [2022-10-17 17:36:05,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:05" (1/1) ... [2022-10-17 17:36:05,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:05" (1/1) ... [2022-10-17 17:36:05,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:05" (1/1) ... [2022-10-17 17:36:06,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:05" (1/1) ... [2022-10-17 17:36:06,004 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:05" (1/1) ... [2022-10-17 17:36:06,006 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:05" (1/1) ... [2022-10-17 17:36:06,008 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:05" (1/1) ... [2022-10-17 17:36:06,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 17:36:06,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 17:36:06,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 17:36:06,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 17:36:06,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:05" (1/1) ... [2022-10-17 17:36:06,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 17:36:06,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta/z3 [2022-10-17 17:36:06,059 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 17:36:06,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4a671b07-1649-4d6b-aded-c40a0fe8c7bc/bin/utaipan-G1rejxKTta/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 17:36:06,115 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-17 17:36:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-17 17:36:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 17:36:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-10-17 17:36:06,116 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-10-17 17:36:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-17 17:36:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 17:36:06,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-17 17:36:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 17:36:06,117 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 17:36:06,117 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-10-17 17:36:06,117 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-10-17 17:36:06,119 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-10-17 17:36:06,302 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 17:36:06,305 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 17:36:06,834 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 17:36:07,016 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 17:36:07,016 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 17:36:07,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:36:07 BoogieIcfgContainer [2022-10-17 17:36:07,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 17:36:07,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 17:36:07,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 17:36:07,026 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 17:36:07,026 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 05:36:05" (1/3) ... [2022-10-17 17:36:07,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62134df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:36:07, skipping insertion in model container [2022-10-17 17:36:07,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 05:36:05" (2/3) ... [2022-10-17 17:36:07,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62134df5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 05:36:07, skipping insertion in model container [2022-10-17 17:36:07,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 05:36:07" (3/3) ... [2022-10-17 17:36:07,030 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2b.i [2022-10-17 17:36:07,048 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-10-17 17:36:07,066 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 17:36:07,067 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-10-17 17:36:07,069 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-10-17 17:36:07,272 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-10-17 17:36:07,322 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-10-17 17:36:07,340 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 210 transitions, 452 flow [2022-10-17 17:36:07,344 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 210 transitions, 452 flow [2022-10-17 17:36:07,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 210 transitions, 452 flow [2022-10-17 17:36:07,472 INFO L130 PetriNetUnfolder]: 2/206 cut-off events. [2022-10-17 17:36:07,472 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-10-17 17:36:07,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 223 conditions, 206 events. 2/206 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 398 event pairs, 0 based on Foata normal form. 0/172 useless extension candidates. Maximal degree in co-relation 153. Up to 2 conditions per place. [2022-10-17 17:36:07,497 INFO L118 LiptonReduction]: Number of co-enabled transitions 16682 [2022-10-17 17:36:13,938 INFO L133 LiptonReduction]: Checked pairs total: 63845 [2022-10-17 17:36:13,939 INFO L135 LiptonReduction]: Total number of compositions: 136 [2022-10-17 17:36:13,949 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 116 places, 103 transitions, 238 flow [2022-10-17 17:36:33,646 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 439459 states, 431590 states have (on average 4.459556523552446) internal successors, (1924700), 439458 states have internal predecessors, (1924700), 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) [2022-10-17 17:36:33,677 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 17:36:33,709 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;@7f9c1a85, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 17:36:33,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-10-17 17:36:34,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 439459 states, 431590 states have (on average 4.459556523552446) internal successors, (1924700), 439458 states have internal predecessors, (1924700), 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) [2022-10-17 17:36:34,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-10-17 17:36:34,452 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 17:36:34,452 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-10-17 17:36:34,453 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting writerErr1ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-10-17 17:36:34,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 17:36:34,460 INFO L85 PathProgramCache]: Analyzing trace with hash 695550, now seen corresponding path program 1 times [2022-10-17 17:36:34,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-10-17 17:36:34,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746092045] [2022-10-17 17:36:34,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 17:36:34,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-17 17:36:34,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 17:36:34,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 17:36:34,694 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-10-17 17:36:34,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746092045] [2022-10-17 17:36:34,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746092045] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 17:36:34,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 17:36:34,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-10-17 17:36:34,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100441538] [2022-10-17 17:36:34,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 17:36:34,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 17:36:34,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-10-17 17:36:34,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 17:36:34,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2