./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 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS/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_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS --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-8393723 [2022-11-19 07:02:10,290 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:02:10,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:02:10,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:02:10,344 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:02:10,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:02:10,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:02:10,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:02:10,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:02:10,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:02:10,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:02:10,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:02:10,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:02:10,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:02:10,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:02:10,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:02:10,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:02:10,383 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:02:10,384 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:02:10,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:02:10,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:02:10,395 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:02:10,396 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:02:10,397 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:02:10,401 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:02:10,401 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:02:10,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:02:10,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:02:10,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:02:10,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:02:10,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:02:10,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:02:10,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:02:10,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:02:10,415 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:02:10,415 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:02:10,416 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:02:10,416 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:02:10,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:02:10,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:02:10,418 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:02:10,419 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-19 07:02:10,475 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:02:10,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:02:10,477 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:02:10,477 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:02:10,478 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:02:10,478 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:02:10,478 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:02:10,479 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:02:10,479 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:02:10,479 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:02:10,480 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:02:10,481 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:02:10,481 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:02:10,494 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:02:10,495 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:02:10,495 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:02:10,495 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:02:10,496 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:02:10,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:02:10,497 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:02:10,497 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-19 07:02:10,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:02:10,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:02:10,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:02:10,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:02:10,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:02:10,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:02:10,499 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-19 07:02:10,500 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:02:10,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:02:10,500 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:02:10,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:02:10,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:02:10,501 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:02:10,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:02:10,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:02:10,502 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:02:10,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:02:10,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:02:10,504 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:02:10,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:02:10,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:02:10,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:02:10,505 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_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7b71c781c26c072fdf5838e0877462128517513c3df1f3bde9f2474cb4533ecb [2022-11-19 07:02:10,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:02:10,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:02:10,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:02:10,873 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:02:10,874 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:02:10,875 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i [2022-11-19 07:02:10,955 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS/data/f72b6a4e5/cc3db7aec1b44e198c5f57e8d57ed24c/FLAGb4b1341e0 [2022-11-19 07:02:11,616 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:02:11,617 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i [2022-11-19 07:02:11,631 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS/data/f72b6a4e5/cc3db7aec1b44e198c5f57e8d57ed24c/FLAGb4b1341e0 [2022-11-19 07:02:11,840 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS/data/f72b6a4e5/cc3db7aec1b44e198c5f57e8d57ed24c [2022-11-19 07:02:11,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:02:11,844 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:02:11,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:02:11,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:02:11,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:02:11,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:02:11" (1/1) ... [2022-11-19 07:02:11,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@515fc9c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:02:11, skipping insertion in model container [2022-11-19 07:02:11,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:02:11" (1/1) ... [2022-11-19 07:02:11,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:02:11,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:02:12,323 WARN L234 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_097c85de-517a-4519-a2bd-15285353433f/sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i[30358,30371] [2022-11-19 07:02:12,347 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:02:12,358 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:02:12,436 WARN L234 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_097c85de-517a-4519-a2bd-15285353433f/sv-benchmarks/c/pthread-atomic/read_write_lock-2b.i[30358,30371] [2022-11-19 07:02:12,460 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:02:12,506 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:02:12,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:02:12 WrapperNode [2022-11-19 07:02:12,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:02:12,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:02:12,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:02:12,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:02:12,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:02:12" (1/1) ... [2022-11-19 07:02:12,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:02:12" (1/1) ... [2022-11-19 07:02:12,604 INFO L138 Inliner]: procedures = 170, calls = 34, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 166 [2022-11-19 07:02:12,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:02:12,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:02:12,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:02:12,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:02:12,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:02:12" (1/1) ... [2022-11-19 07:02:12,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:02:12" (1/1) ... [2022-11-19 07:02:12,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:02:12" (1/1) ... [2022-11-19 07:02:12,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:02:12" (1/1) ... [2022-11-19 07:02:12,645 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:02:12" (1/1) ... [2022-11-19 07:02:12,659 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:02:12" (1/1) ... [2022-11-19 07:02:12,666 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:02:12" (1/1) ... [2022-11-19 07:02:12,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:02:12" (1/1) ... [2022-11-19 07:02:12,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:02:12,682 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:02:12,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:02:12,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:02:12,684 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:02:12" (1/1) ... [2022-11-19 07:02:12,691 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:02:12,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:02:12,719 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:02:12,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_097c85de-517a-4519-a2bd-15285353433f/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:02:12,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:02:12,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:02:12,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:02:12,769 INFO L130 BoogieDeclarations]: Found specification of procedure reader [2022-11-19 07:02:12,769 INFO L138 BoogieDeclarations]: Found implementation of procedure reader [2022-11-19 07:02:12,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:02:12,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:02:12,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:02:12,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:02:12,770 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:02:12,771 INFO L130 BoogieDeclarations]: Found specification of procedure writer [2022-11-19 07:02:12,771 INFO L138 BoogieDeclarations]: Found implementation of procedure writer [2022-11-19 07:02:12,773 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-19 07:02:12,921 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:02:12,923 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:02:13,468 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:02:13,579 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:02:13,580 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:02:13,583 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:02:13 BoogieIcfgContainer [2022-11-19 07:02:13,583 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:02:13,585 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:02:13,586 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:02:13,589 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:02:13,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:02:11" (1/3) ... [2022-11-19 07:02:13,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6043d4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:02:13, skipping insertion in model container [2022-11-19 07:02:13,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:02:12" (2/3) ... [2022-11-19 07:02:13,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6043d4d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:02:13, skipping insertion in model container [2022-11-19 07:02:13,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:02:13" (3/3) ... [2022-11-19 07:02:13,593 INFO L112 eAbstractionObserver]: Analyzing ICFG read_write_lock-2b.i [2022-11-19 07:02:13,603 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-19 07:02:13,615 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:02:13,616 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 18 error locations. [2022-11-19 07:02:13,616 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-19 07:02:13,842 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-11-19 07:02:13,912 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-19 07:02:13,936 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 221 places, 210 transitions, 452 flow [2022-11-19 07:02:13,942 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 221 places, 210 transitions, 452 flow [2022-11-19 07:02:13,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 221 places, 210 transitions, 452 flow [2022-11-19 07:02:14,066 INFO L130 PetriNetUnfolder]: 2/206 cut-off events. [2022-11-19 07:02:14,066 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-11-19 07:02:14,075 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 396 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. [2022-11-19 07:02:14,086 INFO L119 LiptonReduction]: Number of co-enabled transitions 16682 [2022-11-19 07:02:21,281 INFO L134 LiptonReduction]: Checked pairs total: 72440 [2022-11-19 07:02:21,281 INFO L136 LiptonReduction]: Total number of compositions: 129 [2022-11-19 07:02:21,291 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 116 places, 103 transitions, 238 flow [2022-11-19 07:02:39,015 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) [2022-11-19 07:02:39,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:02:39,071 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;@68632a51, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:02:39,072 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-11-19 07:02:39,749 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) [2022-11-19 07:02:39,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-19 07:02:39,755 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:39,755 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-19 07:02:39,756 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting writerErr0ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-19 07:02:39,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:39,762 INFO L85 PathProgramCache]: Analyzing trace with hash 688831, now seen corresponding path program 1 times [2022-11-19 07:02:39,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:39,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464385095] [2022-11-19 07:02:39,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:39,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:40,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:40,035 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:40,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464385095] [2022-11-19 07:02:40,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464385095] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:02:40,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:02:40,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-19 07:02:40,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789988098] [2022-11-19 07:02:40,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:02:40,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-19 07:02:40,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:40,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-19 07:02:40,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:02:42,050 INFO L87 Difference]: Start difference. First 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) Second operand has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 07:02:45,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:02:45,237 INFO L93 Difference]: Finished difference Result 143571 states and 597046 transitions. [2022-11-19 07:02:45,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-19 07:02:45,240 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2022-11-19 07:02:45,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:02:48,068 INFO L225 Difference]: With dead ends: 143571 [2022-11-19 07:02:48,068 INFO L226 Difference]: Without dead ends: 143564 [2022-11-19 07:02:48,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-19 07:02:48,074 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:02:48,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 44 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:02:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143564 states. [2022-11-19 07:02:55,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143564 to 143564. [2022-11-19 07:02:55,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143564 states, 143124 states have (on average 4.171354909029932) internal successors, (597021), 143563 states have internal predecessors, (597021), 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) [2022-11-19 07:02:57,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143564 states to 143564 states and 597021 transitions. [2022-11-19 07:02:57,110 INFO L78 Accepts]: Start accepts. Automaton has 143564 states and 597021 transitions. Word has length 3 [2022-11-19 07:02:57,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:02:57,111 INFO L495 AbstractCegarLoop]: Abstraction has 143564 states and 597021 transitions. [2022-11-19 07:02:57,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 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) [2022-11-19 07:02:57,118 INFO L276 IsEmpty]: Start isEmpty. Operand 143564 states and 597021 transitions. [2022-11-19 07:02:57,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-19 07:02:57,119 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:02:57,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-19 07:02:57,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:02:57,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting writerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-19 07:02:57,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:02:57,122 INFO L85 PathProgramCache]: Analyzing trace with hash -953288427, now seen corresponding path program 1 times [2022-11-19 07:02:57,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:02:57,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512351140] [2022-11-19 07:02:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:02:57,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:02:57,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:02:57,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-19 07:02:57,314 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:02:57,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512351140] [2022-11-19 07:02:57,315 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512351140] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:02:57,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:02:57,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 07:02:57,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909615370] [2022-11-19 07:02:57,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:02:57,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:02:57,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:02:57,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:02:57,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:02:57,319 INFO L87 Difference]: Start difference. First operand 143564 states and 597021 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-19 07:03:01,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:03:01,363 INFO L93 Difference]: Finished difference Result 156532 states and 652759 transitions. [2022-11-19 07:03:01,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:03:01,364 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-11-19 07:03:01,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:03:02,656 INFO L225 Difference]: With dead ends: 156532 [2022-11-19 07:03:02,656 INFO L226 Difference]: Without dead ends: 156532 [2022-11-19 07:03:02,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:03:02,658 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 59 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:03:02,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 104 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:03:03,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156532 states. [2022-11-19 07:03:09,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156532 to 156532. [2022-11-19 07:03:10,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156532 states, 156092 states have (on average 4.181886323450273) internal successors, (652759), 156531 states have internal predecessors, (652759), 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) [2022-11-19 07:03:12,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156532 states to 156532 states and 652759 transitions. [2022-11-19 07:03:12,293 INFO L78 Accepts]: Start accepts. Automaton has 156532 states and 652759 transitions. Word has length 6 [2022-11-19 07:03:12,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:03:12,294 INFO L495 AbstractCegarLoop]: Abstraction has 156532 states and 652759 transitions. [2022-11-19 07:03:12,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-11-19 07:03:12,294 INFO L276 IsEmpty]: Start isEmpty. Operand 156532 states and 652759 transitions. [2022-11-19 07:03:12,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-19 07:03:12,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:03:12,295 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:03:12,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:03:12,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting readerErr3ASSERT_VIOLATIONDATA_RACE === [readerErr0ASSERT_VIOLATIONDATA_RACE, readerErr1ASSERT_VIOLATIONDATA_RACE, readerErr2ASSERT_VIOLATIONDATA_RACE, readerErr3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-19 07:03:12,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:03:12,297 INFO L85 PathProgramCache]: Analyzing trace with hash 583158623, now seen corresponding path program 1 times [2022-11-19 07:03:12,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:03:12,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358083465] [2022-11-19 07:03:12,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:03:12,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms