./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b5237d83 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_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba --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 eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc --- 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-b5237d8 [2022-11-22 02:23:05,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:23:05,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:23:05,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:23:05,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:23:05,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:23:05,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:23:05,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:23:05,569 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:23:05,570 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:23:05,571 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:23:05,572 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:23:05,572 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:23:05,573 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:23:05,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:23:05,576 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:23:05,577 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:23:05,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:23:05,580 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:23:05,585 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:23:05,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:23:05,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:23:05,600 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:23:05,605 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:23:05,608 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:23:05,613 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:23:05,614 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:23:05,615 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:23:05,615 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:23:05,616 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:23:05,617 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:23:05,617 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:23:05,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:23:05,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:23:05,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:23:05,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:23:05,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:23:05,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:23:05,625 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:23:05,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:23:05,628 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:23:05,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-22 02:23:05,652 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:23:05,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:23:05,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:23:05,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:23:05,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:23:05,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:23:05,654 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:23:05,654 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:23:05,654 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:23:05,654 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:23:05,654 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:23:05,655 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:23:05,655 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:23:05,655 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:23:05,655 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:23:05,655 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:23:05,656 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:23:05,656 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:23:05,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:23:05,657 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:23:05,657 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-22 02:23:05,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:23:05,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:23:05,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:23:05,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:23:05,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:23:05,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:23:05,658 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-22 02:23:05,658 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:23:05,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:23:05,659 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:23:05,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:23:05,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:23:05,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:23:05,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:23:05,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:23:05,660 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:23:05,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:23:05,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:23:05,660 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:23:05,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:23:05,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:23:05,661 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:23:05,661 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_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eecffe8522a4364afb75ce7fb01800caae42a8a3ed11b56f212b94255e6f04bc [2022-11-22 02:23:05,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:23:05,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:23:05,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:23:05,946 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:23:05,947 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:23:05,948 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2022-11-22 02:23:09,116 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:23:09,364 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:23:09,365 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c [2022-11-22 02:23:09,373 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/data/b0f56a54b/63fc3bb9c828449a82392106a7f2da9c/FLAG3574023ca [2022-11-22 02:23:09,389 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/data/b0f56a54b/63fc3bb9c828449a82392106a7f2da9c [2022-11-22 02:23:09,392 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:23:09,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:23:09,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:23:09,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:23:09,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:23:09,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:23:09" (1/1) ... [2022-11-22 02:23:09,406 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a6d3e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:09, skipping insertion in model container [2022-11-22 02:23:09,407 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:23:09" (1/1) ... [2022-11-22 02:23:09,415 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:23:09,434 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:23:09,660 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_99af668e-2978-4f42-bc6d-23c12ba6e27c/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-11-22 02:23:09,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:23:09,677 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:23:09,713 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_99af668e-2978-4f42-bc6d-23c12ba6e27c/sv-benchmarks/c/weaver/popl20-simple-array-sum.wvr.c[2690,2703] [2022-11-22 02:23:09,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:23:09,733 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:23:09,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:09 WrapperNode [2022-11-22 02:23:09,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:23:09,735 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:23:09,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:23:09,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:23:09,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:09" (1/1) ... [2022-11-22 02:23:09,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:09" (1/1) ... [2022-11-22 02:23:09,781 INFO L138 Inliner]: procedures = 26, calls = 43, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 172 [2022-11-22 02:23:09,782 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:23:09,782 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:23:09,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:23:09,783 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:23:09,793 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:09" (1/1) ... [2022-11-22 02:23:09,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:09" (1/1) ... [2022-11-22 02:23:09,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:09" (1/1) ... [2022-11-22 02:23:09,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:09" (1/1) ... [2022-11-22 02:23:09,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:09" (1/1) ... [2022-11-22 02:23:09,822 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:09" (1/1) ... [2022-11-22 02:23:09,824 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:09" (1/1) ... [2022-11-22 02:23:09,826 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:09" (1/1) ... [2022-11-22 02:23:09,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:23:09,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:23:09,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:23:09,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:23:09,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:09" (1/1) ... [2022-11-22 02:23:09,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:23:09,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:23:09,890 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:23:09,892 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:23:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:23:09,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:23:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:23:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:23:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-22 02:23:09,930 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-22 02:23:09,930 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-22 02:23:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-22 02:23:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-22 02:23:09,931 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-22 02:23:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:23:09,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-22 02:23:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-22 02:23:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 02:23:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:23:09,932 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:23:09,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:23:09,934 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 02:23:10,101 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:23:10,104 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:23:10,718 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:23:10,974 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:23:10,975 INFO L300 CfgBuilder]: Removed 5 assume(true) statements. [2022-11-22 02:23:10,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:23:10 BoogieIcfgContainer [2022-11-22 02:23:10,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:23:10,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:23:10,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:23:10,988 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:23:10,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:23:09" (1/3) ... [2022-11-22 02:23:10,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61363cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:23:10, skipping insertion in model container [2022-11-22 02:23:10,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:23:09" (2/3) ... [2022-11-22 02:23:10,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61363cb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:23:10, skipping insertion in model container [2022-11-22 02:23:10,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:23:10" (3/3) ... [2022-11-22 02:23:10,991 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-simple-array-sum.wvr.c [2022-11-22 02:23:11,001 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 02:23:11,012 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:23:11,012 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 30 error locations. [2022-11-22 02:23:11,012 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 02:23:11,112 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-22 02:23:11,150 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 02:23:11,172 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 279 places, 285 transitions, 594 flow [2022-11-22 02:23:11,175 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 279 places, 285 transitions, 594 flow [2022-11-22 02:23:11,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 279 places, 285 transitions, 594 flow [2022-11-22 02:23:11,355 INFO L130 PetriNetUnfolder]: 16/282 cut-off events. [2022-11-22 02:23:11,356 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-22 02:23:11,364 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 282 events. 16/282 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 349 event pairs, 0 based on Foata normal form. 0/236 useless extension candidates. Maximal degree in co-relation 207. Up to 3 conditions per place. [2022-11-22 02:23:11,369 INFO L119 LiptonReduction]: Number of co-enabled transitions 6748 [2022-11-22 02:24:52,011 INFO L134 LiptonReduction]: Checked pairs total: 30276 [2022-11-22 02:24:52,011 INFO L136 LiptonReduction]: Total number of compositions: 319 [2022-11-22 02:24:52,021 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 84 places, 83 transitions, 190 flow [2022-11-22 02:24:52,843 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 14904 states, 14251 states have (on average 4.31317100554347) internal successors, (61467), 14903 states have internal predecessors, (61467), 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) [2022-11-22 02:24:52,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:24:52,877 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;@36c3bc35, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:24:52,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2022-11-22 02:24:52,915 INFO L276 IsEmpty]: Start isEmpty. Operand has 14904 states, 14251 states have (on average 4.31317100554347) internal successors, (61467), 14903 states have internal predecessors, (61467), 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) [2022-11-22 02:24:52,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 02:24:52,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:24:52,921 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 02:24:52,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-22 02:24:52,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:24:52,932 INFO L85 PathProgramCache]: Analyzing trace with hash 1140, now seen corresponding path program 1 times [2022-11-22 02:24:52,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:24:52,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145102347] [2022-11-22 02:24:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:52,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:24:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:53,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:24:53,061 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:24:53,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145102347] [2022-11-22 02:24:53,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145102347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:24:53,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:24:53,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 02:24:53,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180566873] [2022-11-22 02:24:53,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:24:53,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:24:53,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:24:53,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:24:53,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:24:53,138 INFO L87 Difference]: Start difference. First operand has 14904 states, 14251 states have (on average 4.31317100554347) internal successors, (61467), 14903 states have internal predecessors, (61467), 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) [2022-11-22 02:24:53,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:24:53,312 INFO L93 Difference]: Finished difference Result 2335 states and 9159 transitions. [2022-11-22 02:24:53,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:24:53,315 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 [2022-11-22 02:24:53,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:24:53,348 INFO L225 Difference]: With dead ends: 2335 [2022-11-22 02:24:53,348 INFO L226 Difference]: Without dead ends: 2299 [2022-11-22 02:24:53,349 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 [2022-11-22 02:24:53,352 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:24:53,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 23 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:24:53,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2299 states. [2022-11-22 02:24:53,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2299 to 2299. [2022-11-22 02:24:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2299 states, 2295 states have (on average 3.9459694989106753) internal successors, (9056), 2298 states have internal predecessors, (9056), 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) [2022-11-22 02:24:53,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2299 states to 2299 states and 9056 transitions. [2022-11-22 02:24:53,661 INFO L78 Accepts]: Start accepts. Automaton has 2299 states and 9056 transitions. Word has length 1 [2022-11-22 02:24:53,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:24:53,662 INFO L495 AbstractCegarLoop]: Abstraction has 2299 states and 9056 transitions. [2022-11-22 02:24:53,666 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) [2022-11-22 02:24:53,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2299 states and 9056 transitions. [2022-11-22 02:24:53,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-22 02:24:53,674 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:24:53,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:24:53,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:24:53,675 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-22 02:24:53,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:24:53,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1966767981, now seen corresponding path program 1 times [2022-11-22 02:24:53,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:24:53,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169564890] [2022-11-22 02:24:53,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:53,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:24:53,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:54,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:24:54,174 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:24:54,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169564890] [2022-11-22 02:24:54,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169564890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:24:54,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:24:54,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:24:54,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764290875] [2022-11-22 02:24:54,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:24:54,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:24:54,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:24:54,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:24:54,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:24:54,178 INFO L87 Difference]: Start difference. First operand 2299 states and 9056 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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) [2022-11-22 02:24:54,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:24:54,599 INFO L93 Difference]: Finished difference Result 3326 states and 12806 transitions. [2022-11-22 02:24:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:24:54,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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 [2022-11-22 02:24:54,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:24:54,629 INFO L225 Difference]: With dead ends: 3326 [2022-11-22 02:24:54,629 INFO L226 Difference]: Without dead ends: 3326 [2022-11-22 02:24:54,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:24:54,631 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 97 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:24:54,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 86 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:24:54,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3326 states. [2022-11-22 02:24:54,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3326 to 2939. [2022-11-22 02:24:54,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2939 states, 2935 states have (on average 3.955366269165247) internal successors, (11609), 2938 states have internal predecessors, (11609), 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) [2022-11-22 02:24:54,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2939 states to 2939 states and 11609 transitions. [2022-11-22 02:24:54,841 INFO L78 Accepts]: Start accepts. Automaton has 2939 states and 11609 transitions. Word has length 12 [2022-11-22 02:24:54,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:24:54,841 INFO L495 AbstractCegarLoop]: Abstraction has 2939 states and 11609 transitions. [2022-11-22 02:24:54,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 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) [2022-11-22 02:24:54,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2939 states and 11609 transitions. [2022-11-22 02:24:54,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 02:24:54,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:24:54,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:24:54,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:24:54,846 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-22 02:24:54,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:24:54,862 INFO L85 PathProgramCache]: Analyzing trace with hash -823619517, now seen corresponding path program 1 times [2022-11-22 02:24:54,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:24:54,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560165266] [2022-11-22 02:24:54,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:54,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:24:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:55,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:24:55,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:24:55,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560165266] [2022-11-22 02:24:55,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1560165266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:24:55,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:24:55,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:24:55,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130661782] [2022-11-22 02:24:55,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:24:55,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:24:55,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:24:55,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:24:55,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:24:55,563 INFO L87 Difference]: Start difference. First operand 2939 states and 11609 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-11-22 02:24:56,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:24:56,479 INFO L93 Difference]: Finished difference Result 4314 states and 16984 transitions. [2022-11-22 02:24:56,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:24:56,480 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2022-11-22 02:24:56,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:24:56,513 INFO L225 Difference]: With dead ends: 4314 [2022-11-22 02:24:56,513 INFO L226 Difference]: Without dead ends: 4314 [2022-11-22 02:24:56,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:24:56,517 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 68 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:24:56,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 73 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:24:56,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4314 states. [2022-11-22 02:24:56,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4314 to 3914. [2022-11-22 02:24:56,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3914 states, 3910 states have (on average 4.0163682864450125) internal successors, (15704), 3913 states have internal predecessors, (15704), 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) [2022-11-22 02:24:56,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3914 states to 3914 states and 15704 transitions. [2022-11-22 02:24:56,840 INFO L78 Accepts]: Start accepts. Automaton has 3914 states and 15704 transitions. Word has length 14 [2022-11-22 02:24:56,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:24:56,841 INFO L495 AbstractCegarLoop]: Abstraction has 3914 states and 15704 transitions. [2022-11-22 02:24:56,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-11-22 02:24:56,842 INFO L276 IsEmpty]: Start isEmpty. Operand 3914 states and 15704 transitions. [2022-11-22 02:24:56,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-22 02:24:56,846 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:24:56,847 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:24:56,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:24:56,848 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-22 02:24:56,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:24:56,848 INFO L85 PathProgramCache]: Analyzing trace with hash 1137553560, now seen corresponding path program 1 times [2022-11-22 02:24:56,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:24:56,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796447733] [2022-11-22 02:24:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:56,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:24:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:57,513 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:24:57,513 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:24:57,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796447733] [2022-11-22 02:24:57,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796447733] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:24:57,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:24:57,514 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:24:57,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901297264] [2022-11-22 02:24:57,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:24:57,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:24:57,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:24:57,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:24:57,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:24:57,516 INFO L87 Difference]: Start difference. First operand 3914 states and 15704 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-11-22 02:24:58,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:24:58,358 INFO L93 Difference]: Finished difference Result 4867 states and 19600 transitions. [2022-11-22 02:24:58,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:24:58,359 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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 14 [2022-11-22 02:24:58,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:24:58,396 INFO L225 Difference]: With dead ends: 4867 [2022-11-22 02:24:58,396 INFO L226 Difference]: Without dead ends: 4867 [2022-11-22 02:24:58,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:24:58,398 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 64 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:24:58,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 56 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:24:58,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4867 states. [2022-11-22 02:24:58,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4867 to 4867. [2022-11-22 02:24:58,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4867 states, 4863 states have (on average 4.030433888546165) internal successors, (19600), 4866 states have internal predecessors, (19600), 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) [2022-11-22 02:24:58,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4867 states to 4867 states and 19600 transitions. [2022-11-22 02:24:58,635 INFO L78 Accepts]: Start accepts. Automaton has 4867 states and 19600 transitions. Word has length 14 [2022-11-22 02:24:58,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:24:58,635 INFO L495 AbstractCegarLoop]: Abstraction has 4867 states and 19600 transitions. [2022-11-22 02:24:58,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 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) [2022-11-22 02:24:58,635 INFO L276 IsEmpty]: Start isEmpty. Operand 4867 states and 19600 transitions. [2022-11-22 02:24:58,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-22 02:24:58,639 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:24:58,639 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:24:58,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:24:58,639 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-22 02:24:58,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:24:58,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1159754488, now seen corresponding path program 1 times [2022-11-22 02:24:58,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:24:58,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749474474] [2022-11-22 02:24:58,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:58,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:24:58,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:24:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:24:58,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:24:58,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749474474] [2022-11-22 02:24:58,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749474474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:24:58,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:24:58,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 02:24:58,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569184776] [2022-11-22 02:24:58,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:24:58,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:24:58,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:24:58,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:24:58,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:24:58,807 INFO L87 Difference]: Start difference. First operand 4867 states and 19600 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-22 02:24:59,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:24:59,228 INFO L93 Difference]: Finished difference Result 4746 states and 18607 transitions. [2022-11-22 02:24:59,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:24:59,229 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2022-11-22 02:24:59,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:24:59,261 INFO L225 Difference]: With dead ends: 4746 [2022-11-22 02:24:59,261 INFO L226 Difference]: Without dead ends: 4746 [2022-11-22 02:24:59,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:24:59,262 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 76 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:24:59,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [76 Valid, 101 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:24:59,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2022-11-22 02:24:59,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 4674. [2022-11-22 02:24:59,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4670 states have (on average 3.95203426124197) internal successors, (18456), 4673 states have internal predecessors, (18456), 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) [2022-11-22 02:24:59,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 18456 transitions. [2022-11-22 02:24:59,476 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 18456 transitions. Word has length 17 [2022-11-22 02:24:59,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:24:59,477 INFO L495 AbstractCegarLoop]: Abstraction has 4674 states and 18456 transitions. [2022-11-22 02:24:59,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 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) [2022-11-22 02:24:59,477 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 18456 transitions. [2022-11-22 02:24:59,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 02:24:59,483 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:24:59,484 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:24:59,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:24:59,484 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-22 02:24:59,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:24:59,485 INFO L85 PathProgramCache]: Analyzing trace with hash 1476237347, now seen corresponding path program 1 times [2022-11-22 02:24:59,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:24:59,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062935509] [2022-11-22 02:24:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:24:59,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:24:59,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:25:00,484 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:25:00,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062935509] [2022-11-22 02:25:00,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062935509] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:25:00,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:25:00,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 02:25:00,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082798748] [2022-11-22 02:25:00,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:25:00,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 02:25:00,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:25:00,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 02:25:00,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:25:00,486 INFO L87 Difference]: Start difference. First operand 4674 states and 18456 transitions. Second operand has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) [2022-11-22 02:25:01,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:25:01,480 INFO L93 Difference]: Finished difference Result 4394 states and 17280 transitions. [2022-11-22 02:25:01,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:25:01,480 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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 19 [2022-11-22 02:25:01,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:25:01,502 INFO L225 Difference]: With dead ends: 4394 [2022-11-22 02:25:01,502 INFO L226 Difference]: Without dead ends: 4394 [2022-11-22 02:25:01,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:25:01,504 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 202 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:25:01,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 78 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:25:01,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4394 states. [2022-11-22 02:25:01,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4394 to 3274. [2022-11-22 02:25:01,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3274 states, 3272 states have (on average 3.843520782396088) internal successors, (12576), 3273 states have internal predecessors, (12576), 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) [2022-11-22 02:25:01,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3274 states to 3274 states and 12576 transitions. [2022-11-22 02:25:01,671 INFO L78 Accepts]: Start accepts. Automaton has 3274 states and 12576 transitions. Word has length 19 [2022-11-22 02:25:01,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:25:01,673 INFO L495 AbstractCegarLoop]: Abstraction has 3274 states and 12576 transitions. [2022-11-22 02:25:01,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.111111111111111) internal successors, (19), 9 states have internal predecessors, (19), 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) [2022-11-22 02:25:01,673 INFO L276 IsEmpty]: Start isEmpty. Operand 3274 states and 12576 transitions. [2022-11-22 02:25:01,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 02:25:01,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:25:01,680 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:25:01,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:25:01,681 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-22 02:25:01,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:25:01,681 INFO L85 PathProgramCache]: Analyzing trace with hash -625949271, now seen corresponding path program 1 times [2022-11-22 02:25:01,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:25:01,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101453992] [2022-11-22 02:25:01,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:01,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:25:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:25:02,563 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:25:02,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101453992] [2022-11-22 02:25:02,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101453992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:25:02,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:25:02,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:25:02,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784960672] [2022-11-22 02:25:02,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:25:02,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:25:02,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:25:02,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:25:02,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:25:02,566 INFO L87 Difference]: Start difference. First operand 3274 states and 12576 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2022-11-22 02:25:03,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:25:03,562 INFO L93 Difference]: Finished difference Result 9016 states and 34976 transitions. [2022-11-22 02:25:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:25:03,571 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2022-11-22 02:25:03,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:25:03,625 INFO L225 Difference]: With dead ends: 9016 [2022-11-22 02:25:03,625 INFO L226 Difference]: Without dead ends: 9016 [2022-11-22 02:25:03,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:25:03,627 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 236 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:25:03,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 86 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:25:03,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9016 states. [2022-11-22 02:25:03,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9016 to 4125. [2022-11-22 02:25:03,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4125 states, 4123 states have (on average 3.974533106960951) internal successors, (16387), 4124 states have internal predecessors, (16387), 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) [2022-11-22 02:25:03,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4125 states to 4125 states and 16387 transitions. [2022-11-22 02:25:03,891 INFO L78 Accepts]: Start accepts. Automaton has 4125 states and 16387 transitions. Word has length 19 [2022-11-22 02:25:03,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:25:03,891 INFO L495 AbstractCegarLoop]: Abstraction has 4125 states and 16387 transitions. [2022-11-22 02:25:03,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2022-11-22 02:25:03,892 INFO L276 IsEmpty]: Start isEmpty. Operand 4125 states and 16387 transitions. [2022-11-22 02:25:03,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-22 02:25:03,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:25:03,900 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:25:03,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:25:03,900 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-22 02:25:03,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:25:03,901 INFO L85 PathProgramCache]: Analyzing trace with hash -951545495, now seen corresponding path program 2 times [2022-11-22 02:25:03,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:25:03,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730205455] [2022-11-22 02:25:03,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:03,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:25:03,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:04,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-22 02:25:04,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:25:04,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730205455] [2022-11-22 02:25:04,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730205455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:25:04,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:25:04,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:25:04,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223639686] [2022-11-22 02:25:04,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:25:04,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:25:04,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:25:04,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:25:04,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:25:04,615 INFO L87 Difference]: Start difference. First operand 4125 states and 16387 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2022-11-22 02:25:05,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:25:05,681 INFO L93 Difference]: Finished difference Result 10290 states and 40447 transitions. [2022-11-22 02:25:05,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:25:05,682 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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 19 [2022-11-22 02:25:05,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:25:05,722 INFO L225 Difference]: With dead ends: 10290 [2022-11-22 02:25:05,722 INFO L226 Difference]: Without dead ends: 10290 [2022-11-22 02:25:05,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:25:05,723 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 245 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:25:05,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [245 Valid, 97 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 277 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:25:05,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10290 states. [2022-11-22 02:25:05,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10290 to 4398. [2022-11-22 02:25:05,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4398 states, 4396 states have (on average 3.978616924476797) internal successors, (17490), 4397 states have internal predecessors, (17490), 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) [2022-11-22 02:25:06,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4398 states to 4398 states and 17490 transitions. [2022-11-22 02:25:06,093 INFO L78 Accepts]: Start accepts. Automaton has 4398 states and 17490 transitions. Word has length 19 [2022-11-22 02:25:06,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:25:06,093 INFO L495 AbstractCegarLoop]: Abstraction has 4398 states and 17490 transitions. [2022-11-22 02:25:06,093 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2022-11-22 02:25:06,093 INFO L276 IsEmpty]: Start isEmpty. Operand 4398 states and 17490 transitions. [2022-11-22 02:25:06,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-22 02:25:06,101 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:25:06,101 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:25:06,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:25:06,102 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-22 02:25:06,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:25:06,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1516858557, now seen corresponding path program 1 times [2022-11-22 02:25:06,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:25:06,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504612377] [2022-11-22 02:25:06,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:06,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:25:06,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:06,293 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:25:06,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:25:06,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504612377] [2022-11-22 02:25:06,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504612377] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:25:06,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139913002] [2022-11-22 02:25:06,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:06,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:25:06,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:25:06,302 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:25:06,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:25:06,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:06,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-22 02:25:06,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:25:06,803 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:25:06,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:25:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:25:06,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139913002] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:25:06,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [36007392] [2022-11-22 02:25:06,995 FATAL L? ?]: Ignoring exception! java.lang.UnsupportedOperationException: Cannot create path program transition for IcfgForkThreadOtherTransition at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.createPathProgramTransition(PathProgram.java:270) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183) at java.base/java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:177) at java.base/java.util.HashMap$KeySpliterator.forEachRemaining(HashMap.java:1621) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:497) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram$PathProgramConstructor.(PathProgram.java:235) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.cfg.PathProgram.constructPathProgram(PathProgram.java:112) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:91) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-22 02:25:06,998 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:25:06,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-22 02:25:06,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47840191] [2022-11-22 02:25:06,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-22 02:25:06,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:25:06,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:25:06,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:25:07,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:25:07,000 INFO L87 Difference]: Start difference. First operand 4398 states and 17490 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 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) [2022-11-22 02:25:08,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:25:08,342 INFO L93 Difference]: Finished difference Result 15017 states and 59097 transitions. [2022-11-22 02:25:08,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-22 02:25:08,343 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 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 22 [2022-11-22 02:25:08,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:25:08,423 INFO L225 Difference]: With dead ends: 15017 [2022-11-22 02:25:08,424 INFO L226 Difference]: Without dead ends: 15017 [2022-11-22 02:25:08,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=195, Invalid=405, Unknown=0, NotChecked=0, Total=600 [2022-11-22 02:25:08,426 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 941 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:25:08,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [941 Valid, 369 Invalid, 337 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:25:08,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15017 states. [2022-11-22 02:25:08,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15017 to 7831. [2022-11-22 02:25:08,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7831 states, 7829 states have (on average 4.068080214586793) internal successors, (31849), 7830 states have internal predecessors, (31849), 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) [2022-11-22 02:25:08,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7831 states to 7831 states and 31849 transitions. [2022-11-22 02:25:08,776 INFO L78 Accepts]: Start accepts. Automaton has 7831 states and 31849 transitions. Word has length 22 [2022-11-22 02:25:08,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:25:08,778 INFO L495 AbstractCegarLoop]: Abstraction has 7831 states and 31849 transitions. [2022-11-22 02:25:08,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 13 states have internal predecessors, (46), 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) [2022-11-22 02:25:08,778 INFO L276 IsEmpty]: Start isEmpty. Operand 7831 states and 31849 transitions. [2022-11-22 02:25:08,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 02:25:08,797 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:25:08,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:25:08,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-22 02:25:09,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:25:09,012 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-22 02:25:09,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:25:09,013 INFO L85 PathProgramCache]: Analyzing trace with hash -550578273, now seen corresponding path program 1 times [2022-11-22 02:25:09,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:25:09,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364164938] [2022-11-22 02:25:09,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:09,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:25:09,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:25:09,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:25:09,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364164938] [2022-11-22 02:25:09,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364164938] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:25:09,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:25:09,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:25:09,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938204243] [2022-11-22 02:25:09,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:25:09,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:25:09,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:25:09,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:25:09,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:25:09,559 INFO L87 Difference]: Start difference. First operand 7831 states and 31849 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2022-11-22 02:25:10,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:25:10,252 INFO L93 Difference]: Finished difference Result 7946 states and 32177 transitions. [2022-11-22 02:25:10,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:25:10,253 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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 24 [2022-11-22 02:25:10,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:25:10,288 INFO L225 Difference]: With dead ends: 7946 [2022-11-22 02:25:10,288 INFO L226 Difference]: Without dead ends: 5973 [2022-11-22 02:25:10,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:25:10,290 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 36 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:25:10,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 58 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:25:10,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5973 states. [2022-11-22 02:25:10,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5973 to 5973. [2022-11-22 02:25:10,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5973 states, 5971 states have (on average 3.860994808239826) internal successors, (23054), 5972 states have internal predecessors, (23054), 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) [2022-11-22 02:25:10,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5973 states to 5973 states and 23054 transitions. [2022-11-22 02:25:10,478 INFO L78 Accepts]: Start accepts. Automaton has 5973 states and 23054 transitions. Word has length 24 [2022-11-22 02:25:10,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:25:10,478 INFO L495 AbstractCegarLoop]: Abstraction has 5973 states and 23054 transitions. [2022-11-22 02:25:10,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2022-11-22 02:25:10,479 INFO L276 IsEmpty]: Start isEmpty. Operand 5973 states and 23054 transitions. [2022-11-22 02:25:10,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-11-22 02:25:10,490 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:25:10,490 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:25:10,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:25:10,490 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread1Err3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-22 02:25:10,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:25:10,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1715431202, now seen corresponding path program 2 times [2022-11-22 02:25:10,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:25:10,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317953340] [2022-11-22 02:25:10,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:10,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:25:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:11,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:25:11,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:25:11,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317953340] [2022-11-22 02:25:11,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317953340] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:25:11,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1612053317] [2022-11-22 02:25:11,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-22 02:25:11,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:25:11,839 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:25:11,841 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:25:11,857 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 02:25:12,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-22 02:25:12,069 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-22 02:25:12,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 44 conjunts are in the unsatisfiable core [2022-11-22 02:25:12,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:25:12,233 INFO L321 Elim1Store]: treesize reduction 72, result has 33.9 percent of original size [2022-11-22 02:25:12,234 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 42 [2022-11-22 02:25:12,287 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-22 02:25:12,287 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-22 02:25:12,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-11-22 02:25:12,425 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-11-22 02:25:12,504 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:25:12,504 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2022-11-22 02:25:12,616 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-22 02:25:12,617 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2022-11-22 02:25:12,944 INFO L321 Elim1Store]: treesize reduction 700, result has 6.4 percent of original size [2022-11-22 02:25:12,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 113 [2022-11-22 02:25:12,957 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 89 [2022-11-22 02:25:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-22 02:25:13,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-22 02:25:13,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1612053317] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:25:13,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-22 02:25:13,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 15 [2022-11-22 02:25:13,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370295002] [2022-11-22 02:25:13,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:25:13,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 02:25:13,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:25:13,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 02:25:13,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:25:13,058 INFO L87 Difference]: Start difference. First operand 5973 states and 23054 transitions. Second operand has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2022-11-22 02:25:14,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:25:14,284 INFO L93 Difference]: Finished difference Result 5714 states and 22018 transitions. [2022-11-22 02:25:14,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:25:14,285 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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 24 [2022-11-22 02:25:14,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:25:14,314 INFO L225 Difference]: With dead ends: 5714 [2022-11-22 02:25:14,314 INFO L226 Difference]: Without dead ends: 5122 [2022-11-22 02:25:14,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=380, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:25:14,316 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 182 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:25:14,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 66 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-22 02:25:14,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5122 states. [2022-11-22 02:25:14,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5122 to 2763. [2022-11-22 02:25:14,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2762 states have (on average 3.716871832005793) internal successors, (10266), 2762 states have internal predecessors, (10266), 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) [2022-11-22 02:25:14,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 10266 transitions. [2022-11-22 02:25:14,457 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 10266 transitions. Word has length 24 [2022-11-22 02:25:14,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:25:14,457 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 10266 transitions. [2022-11-22 02:25:14,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.3333333333333335) internal successors, (21), 9 states have internal predecessors, (21), 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) [2022-11-22 02:25:14,458 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 10266 transitions. [2022-11-22 02:25:14,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-11-22 02:25:14,471 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:25:14,472 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:25:14,478 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-22 02:25:14,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:25:14,678 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-22 02:25:14,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:25:14,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1762540327, now seen corresponding path program 1 times [2022-11-22 02:25:14,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:25:14,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285365980] [2022-11-22 02:25:14,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:14,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:25:14,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:14,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:25:14,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:25:14,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285365980] [2022-11-22 02:25:14,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285365980] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:25:14,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536600259] [2022-11-22 02:25:14,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:14,924 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:25:14,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:25:14,927 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:25:14,955 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-22 02:25:15,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:15,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-22 02:25:15,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:25:15,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:25:15,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:25:15,389 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-22 02:25:15,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536600259] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-22 02:25:15,390 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-22 02:25:15,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 9 [2022-11-22 02:25:15,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843360691] [2022-11-22 02:25:15,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:25:15,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:25:15,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:25:15,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:25:15,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:25:15,392 INFO L87 Difference]: Start difference. First operand 2763 states and 10266 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-11-22 02:25:15,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:25:15,605 INFO L93 Difference]: Finished difference Result 3289 states and 12280 transitions. [2022-11-22 02:25:15,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:25:15,606 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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 29 [2022-11-22 02:25:15,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:25:15,622 INFO L225 Difference]: With dead ends: 3289 [2022-11-22 02:25:15,622 INFO L226 Difference]: Without dead ends: 3289 [2022-11-22 02:25:15,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 52 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:25:15,624 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 96 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:25:15,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 40 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:25:15,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2022-11-22 02:25:15,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3289. [2022-11-22 02:25:15,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3289 states, 3288 states have (on average 3.734793187347932) internal successors, (12280), 3288 states have internal predecessors, (12280), 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) [2022-11-22 02:25:15,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3289 states to 3289 states and 12280 transitions. [2022-11-22 02:25:15,748 INFO L78 Accepts]: Start accepts. Automaton has 3289 states and 12280 transitions. Word has length 29 [2022-11-22 02:25:15,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:25:15,749 INFO L495 AbstractCegarLoop]: Abstraction has 3289 states and 12280 transitions. [2022-11-22 02:25:15,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 4 states have internal predecessors, (29), 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) [2022-11-22 02:25:15,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3289 states and 12280 transitions. [2022-11-22 02:25:15,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-11-22 02:25:15,761 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:25:15,761 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:25:15,774 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-22 02:25:15,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:25:15,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 46 more)] === [2022-11-22 02:25:15,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:25:15,972 INFO L85 PathProgramCache]: Analyzing trace with hash 706573159, now seen corresponding path program 1 times [2022-11-22 02:25:15,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:25:15,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024104183] [2022-11-22 02:25:15,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:25:15,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:25:16,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:25:16,751 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:25:16,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:25:16,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024104183] [2022-11-22 02:25:16,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024104183] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:25:16,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:25:16,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 02:25:16,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154964464] [2022-11-22 02:25:16,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:25:16,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-22 02:25:16,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:25:16,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-22 02:25:16,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-11-22 02:25:16,754 INFO L87 Difference]: Start difference. First operand 3289 states and 12280 transitions. Second operand has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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) [2022-11-22 02:25:17,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:25:17,510 INFO L93 Difference]: Finished difference Result 3254 states and 12168 transitions. [2022-11-22 02:25:17,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:25:17,511 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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 36 [2022-11-22 02:25:17,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:25:17,512 INFO L225 Difference]: With dead ends: 3254 [2022-11-22 02:25:17,512 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 02:25:17,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:25:17,513 INFO L413 NwaCegarLoop]: 27 mSDtfsCounter, 125 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:25:17,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [125 Valid, 69 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:25:17,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 02:25:17,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 02:25:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2022-11-22 02:25:17,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 02:25:17,514 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2022-11-22 02:25:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:25:17,514 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 02:25:17,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.888888888888889) internal successors, (35), 9 states have internal predecessors, (35), 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) [2022-11-22 02:25:17,514 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 02:25:17,514 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 02:25:17,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (49 of 50 remaining) [2022-11-22 02:25:17,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (48 of 50 remaining) [2022-11-22 02:25:17,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (47 of 50 remaining) [2022-11-22 02:25:17,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONDATA_RACE (46 of 50 remaining) [2022-11-22 02:25:17,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONDATA_RACE (45 of 50 remaining) [2022-11-22 02:25:17,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (44 of 50 remaining) [2022-11-22 02:25:17,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (43 of 50 remaining) [2022-11-22 02:25:17,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (42 of 50 remaining) [2022-11-22 02:25:17,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (41 of 50 remaining) [2022-11-22 02:25:17,519 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (40 of 50 remaining) [2022-11-22 02:25:17,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONDATA_RACE (39 of 50 remaining) [2022-11-22 02:25:17,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONDATA_RACE (38 of 50 remaining) [2022-11-22 02:25:17,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONDATA_RACE (37 of 50 remaining) [2022-11-22 02:25:17,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONDATA_RACE (36 of 50 remaining) [2022-11-22 02:25:17,520 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONDATA_RACE (35 of 50 remaining) [2022-11-22 02:25:17,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONDATA_RACE (34 of 50 remaining) [2022-11-22 02:25:17,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONDATA_RACE (33 of 50 remaining) [2022-11-22 02:25:17,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (32 of 50 remaining) [2022-11-22 02:25:17,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (31 of 50 remaining) [2022-11-22 02:25:17,521 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (30 of 50 remaining) [2022-11-22 02:25:17,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE (29 of 50 remaining) [2022-11-22 02:25:17,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE (28 of 50 remaining) [2022-11-22 02:25:17,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONDATA_RACE (27 of 50 remaining) [2022-11-22 02:25:17,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONDATA_RACE (26 of 50 remaining) [2022-11-22 02:25:17,522 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (25 of 50 remaining) [2022-11-22 02:25:17,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONDATA_RACE (24 of 50 remaining) [2022-11-22 02:25:17,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONDATA_RACE (23 of 50 remaining) [2022-11-22 02:25:17,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE (22 of 50 remaining) [2022-11-22 02:25:17,523 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONDATA_RACE (21 of 50 remaining) [2022-11-22 02:25:17,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONDATA_RACE (20 of 50 remaining) [2022-11-22 02:25:17,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 50 remaining) [2022-11-22 02:25:17,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (18 of 50 remaining) [2022-11-22 02:25:17,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 50 remaining) [2022-11-22 02:25:17,524 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONDATA_RACE (16 of 50 remaining) [2022-11-22 02:25:17,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONDATA_RACE (15 of 50 remaining) [2022-11-22 02:25:17,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONDATA_RACE (14 of 50 remaining) [2022-11-22 02:25:17,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONDATA_RACE (13 of 50 remaining) [2022-11-22 02:25:17,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONDATA_RACE (12 of 50 remaining) [2022-11-22 02:25:17,525 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONDATA_RACE (11 of 50 remaining) [2022-11-22 02:25:17,526 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONDATA_RACE (10 of 50 remaining) [2022-11-22 02:25:17,526 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONDATA_RACE (9 of 50 remaining) [2022-11-22 02:25:17,526 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONDATA_RACE (8 of 50 remaining) [2022-11-22 02:25:17,526 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONDATA_RACE (7 of 50 remaining) [2022-11-22 02:25:17,526 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONDATA_RACE (6 of 50 remaining) [2022-11-22 02:25:17,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONDATA_RACE (5 of 50 remaining) [2022-11-22 02:25:17,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONDATA_RACE (4 of 50 remaining) [2022-11-22 02:25:17,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONDATA_RACE (3 of 50 remaining) [2022-11-22 02:25:17,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONDATA_RACE (2 of 50 remaining) [2022-11-22 02:25:17,527 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONDATA_RACE (1 of 50 remaining) [2022-11-22 02:25:17,528 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONDATA_RACE (0 of 50 remaining) [2022-11-22 02:25:17,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:25:17,530 INFO L444 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:25:17,535 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 02:25:17,536 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:25:17,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:25:17 BasicIcfg [2022-11-22 02:25:17,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:25:17,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:25:17,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:25:17,540 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:25:17,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:23:10" (3/4) ... [2022-11-22 02:25:17,543 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 02:25:17,549 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-22 02:25:17,549 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-22 02:25:17,549 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-22 02:25:17,554 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2022-11-22 02:25:17,555 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-22 02:25:17,555 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 02:25:17,555 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 02:25:17,595 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:25:17,596 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:25:17,596 INFO L158 Benchmark]: Toolchain (without parser) took 128202.55ms. Allocated memory was 146.8MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 103.1MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 319.3MB. Max. memory is 16.1GB. [2022-11-22 02:25:17,597 INFO L158 Benchmark]: CDTParser took 0.30ms. Allocated memory is still 146.8MB. Free memory was 121.8MB in the beginning and 121.7MB in the end (delta: 31.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:25:17,597 INFO L158 Benchmark]: CACSL2BoogieTranslator took 334.19ms. Allocated memory is still 146.8MB. Free memory was 103.1MB in the beginning and 90.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-22 02:25:17,597 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.22ms. Allocated memory is still 146.8MB. Free memory was 90.5MB in the beginning and 88.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:25:17,598 INFO L158 Benchmark]: Boogie Preprocessor took 48.45ms. Allocated memory is still 146.8MB. Free memory was 88.4MB in the beginning and 85.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:25:17,598 INFO L158 Benchmark]: RCFGBuilder took 1135.51ms. Allocated memory is still 146.8MB. Free memory was 85.8MB in the beginning and 109.4MB in the end (delta: -23.6MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. [2022-11-22 02:25:17,598 INFO L158 Benchmark]: TraceAbstraction took 126554.22ms. Allocated memory was 146.8MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 108.7MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 318.8MB. Max. memory is 16.1GB. [2022-11-22 02:25:17,599 INFO L158 Benchmark]: Witness Printer took 56.60ms. Allocated memory is still 1.9GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 02:25:17,600 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30ms. Allocated memory is still 146.8MB. Free memory was 121.8MB in the beginning and 121.7MB in the end (delta: 31.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 334.19ms. Allocated memory is still 146.8MB. Free memory was 103.1MB in the beginning and 90.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 47.22ms. Allocated memory is still 146.8MB. Free memory was 90.5MB in the beginning and 88.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 48.45ms. Allocated memory is still 146.8MB. Free memory was 88.4MB in the beginning and 85.8MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 1135.51ms. Allocated memory is still 146.8MB. Free memory was 85.8MB in the beginning and 109.4MB in the end (delta: -23.6MB). Peak memory consumption was 38.3MB. Max. memory is 16.1GB. * TraceAbstraction took 126554.22ms. Allocated memory was 146.8MB in the beginning and 1.9GB in the end (delta: 1.8GB). Free memory was 108.7MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 318.8MB. Max. memory is 16.1GB. * Witness Printer took 56.60ms. Allocated memory is still 1.9GB. Free memory was 1.6GB in the beginning and 1.6GB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 100.8s, 279 PlacesBefore, 84 PlacesAfterwards, 285 TransitionsBefore, 83 TransitionsAfterwards, 6748 CoEnabledTransitionPairs, 9 FixpointIterations, 176 TrivialSequentialCompositions, 96 ConcurrentSequentialCompositions, 29 TrivialYvCompositions, 11 ConcurrentYvCompositions, 7 ChoiceCompositions, 319 TotalNumberOfCompositions, 30276 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 16532, independent: 15938, independent conditional: 0, independent unconditional: 15938, dependent: 475, dependent conditional: 0, dependent unconditional: 475, unknown: 119, unknown conditional: 0, unknown unconditional: 119] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 5461, independent: 5314, independent conditional: 0, independent unconditional: 5314, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 34, unknown conditional: 0, unknown unconditional: 34] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 5461, independent: 4754, independent conditional: 0, independent unconditional: 4754, dependent: 707, dependent conditional: 0, dependent unconditional: 707, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 707, independent: 560, independent conditional: 0, independent unconditional: 560, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 34, unknown conditional: 0, unknown unconditional: 34] , SemanticIndependenceRelation.Query Time [ms]: [ total: 83435, independent: 1110, independent conditional: 0, independent unconditional: 1110, dependent: 2675, dependent conditional: 0, dependent unconditional: 2675, unknown: 79650, unknown conditional: 0, unknown unconditional: 79650] ], Cache Queries: [ total: 16532, independent: 10624, independent conditional: 0, independent unconditional: 10624, dependent: 362, dependent conditional: 0, dependent unconditional: 362, unknown: 5546, unknown conditional: 0, unknown unconditional: 5546] , Statistics on independence cache: Total cache size (in pairs): 1307, Positive cache size: 1265, Positive conditional cache size: 0, Positive unconditional cache size: 1265, Negative cache size: 42, Negative conditional cache size: 0, Negative unconditional cache size: 42, Unknown cache size: 8, Unknown conditional cache size: 0, Unknown unconditional cache size: 8 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 50]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 51]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 51]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 51]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 51]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 58]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 60]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 60]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 60]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 60]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 63]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 72]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 74]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 78]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 78]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 78]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 78]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 90]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 91]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 91]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 114]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 92]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 92]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 114]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 98]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 99]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 100]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 102]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 102]: there are no data races For all program executions holds that there are no data races at this location - PositiveResult [Line: 102]: there are no data races For all program executions holds that there are no data races at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 341 locations, 50 error locations. Started 1 CEGAR loops. OverallTime: 126.4s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.1s, AutomataDifference: 10.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 101.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2368 SdHoareTripleChecker+Valid, 7.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2368 mSDsluCounter, 1202 SdHoareTripleChecker+Invalid, 7.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 728 mSDsCounter, 278 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2436 IncrementalHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 278 mSolverCounterUnsat, 474 mSDtfsCounter, 2436 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 238 GetRequests, 109 SyntacticMatches, 4 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14904occurred in iteration=0, InterpolantAutomatonStates: 89, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 13 MinimizatonAttempts, 22307 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 9.0s InterpolantComputationTime, 325 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 358 ConstructedInterpolants, 0 QuantifiedInterpolants, 2614 SizeOfPredicates, 14 NumberOfNonLiveVariables, 877 ConjunctsInSsa, 58 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 37/46 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 30 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-22 02:25:17,728 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_99af668e-2978-4f42-bc6d-23c12ba6e27c/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE