./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-atomic/scull.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-atomic/scull.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9 --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 aa00f20131f5095ed14e7a46332bb5342dc26be5a17ecfa68bf5b51120e1579b --- 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-6b4ec56 [2022-11-20 19:49:33,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 19:49:33,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 19:49:34,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 19:49:34,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 19:49:34,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 19:49:34,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 19:49:34,015 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 19:49:34,017 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 19:49:34,018 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 19:49:34,019 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 19:49:34,020 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 19:49:34,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 19:49:34,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 19:49:34,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 19:49:34,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 19:49:34,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 19:49:34,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 19:49:34,028 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 19:49:34,030 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 19:49:34,032 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 19:49:34,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 19:49:34,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 19:49:34,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 19:49:34,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 19:49:34,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 19:49:34,063 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 19:49:34,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 19:49:34,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 19:49:34,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 19:49:34,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 19:49:34,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 19:49:34,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 19:49:34,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 19:49:34,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 19:49:34,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 19:49:34,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 19:49:34,076 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 19:49:34,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 19:49:34,078 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 19:49:34,079 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 19:49:34,080 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-11-20 19:49:34,119 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 19:49:34,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 19:49:34,123 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 19:49:34,124 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 19:49:34,125 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 19:49:34,125 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 19:49:34,125 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-20 19:49:34,126 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-20 19:49:34,126 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-20 19:49:34,126 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-20 19:49:34,127 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-20 19:49:34,128 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-20 19:49:34,128 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-20 19:49:34,128 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-20 19:49:34,128 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-20 19:49:34,129 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-20 19:49:34,129 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-20 19:49:34,129 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-20 19:49:34,130 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 19:49:34,130 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 19:49:34,131 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-20 19:49:34,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 19:49:34,131 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 19:49:34,131 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 19:49:34,131 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 19:49:34,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 19:49:34,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 19:49:34,133 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-11-20 19:49:34,134 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 19:49:34,134 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 19:49:34,134 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 19:49:34,135 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 19:49:34,135 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 19:49:34,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 19:49:34,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:49:34,136 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 19:49:34,136 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-20 19:49:34,136 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 19:49:34,136 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 19:49:34,137 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-20 19:49:34,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 19:49:34,137 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 19:49:34,137 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-20 19:49:34,138 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_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aa00f20131f5095ed14e7a46332bb5342dc26be5a17ecfa68bf5b51120e1579b [2022-11-20 19:49:34,488 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 19:49:34,509 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 19:49:34,512 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 19:49:34,513 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 19:49:34,514 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 19:49:34,515 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9/../../sv-benchmarks/c/pthread-atomic/scull.i [2022-11-20 19:49:37,554 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 19:49:37,864 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 19:49:37,864 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/sv-benchmarks/c/pthread-atomic/scull.i [2022-11-20 19:49:37,879 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9/data/7a56565a3/d9d5abbdbaee4783aeb1fded5d537a36/FLAGffa836f61 [2022-11-20 19:49:37,893 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9/data/7a56565a3/d9d5abbdbaee4783aeb1fded5d537a36 [2022-11-20 19:49:37,896 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 19:49:37,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 19:49:37,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 19:49:37,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 19:49:37,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 19:49:37,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:49:37" (1/1) ... [2022-11-20 19:49:37,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c436db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:37, skipping insertion in model container [2022-11-20 19:49:37,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:49:37" (1/1) ... [2022-11-20 19:49:37,915 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 19:49:38,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 19:49:38,555 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_c37ada33-72e3-495d-821e-05a43196baca/sv-benchmarks/c/pthread-atomic/scull.i[30879,30892] [2022-11-20 19:49:38,568 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_c37ada33-72e3-495d-821e-05a43196baca/sv-benchmarks/c/pthread-atomic/scull.i[31740,31753] [2022-11-20 19:49:38,585 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_c37ada33-72e3-495d-821e-05a43196baca/sv-benchmarks/c/pthread-atomic/scull.i[32508,32521] [2022-11-20 19:49:38,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:49:38,648 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 19:49:38,716 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_c37ada33-72e3-495d-821e-05a43196baca/sv-benchmarks/c/pthread-atomic/scull.i[30879,30892] [2022-11-20 19:49:38,729 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_c37ada33-72e3-495d-821e-05a43196baca/sv-benchmarks/c/pthread-atomic/scull.i[31740,31753] [2022-11-20 19:49:38,742 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_c37ada33-72e3-495d-821e-05a43196baca/sv-benchmarks/c/pthread-atomic/scull.i[32508,32521] [2022-11-20 19:49:38,757 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 19:49:38,823 INFO L208 MainTranslator]: Completed translation [2022-11-20 19:49:38,824 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:38 WrapperNode [2022-11-20 19:49:38,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 19:49:38,827 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 19:49:38,827 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 19:49:38,827 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 19:49:38,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:38" (1/1) ... [2022-11-20 19:49:38,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:38" (1/1) ... [2022-11-20 19:49:38,945 INFO L138 Inliner]: procedures = 185, calls = 66, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 532 [2022-11-20 19:49:38,952 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 19:49:38,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 19:49:38,953 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 19:49:38,953 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 19:49:38,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:38" (1/1) ... [2022-11-20 19:49:38,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:38" (1/1) ... [2022-11-20 19:49:38,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:38" (1/1) ... [2022-11-20 19:49:38,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:38" (1/1) ... [2022-11-20 19:49:38,995 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:38" (1/1) ... [2022-11-20 19:49:38,998 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:38" (1/1) ... [2022-11-20 19:49:39,000 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:38" (1/1) ... [2022-11-20 19:49:39,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:38" (1/1) ... [2022-11-20 19:49:39,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 19:49:39,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 19:49:39,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 19:49:39,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 19:49:39,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:38" (1/1) ... [2022-11-20 19:49:39,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 19:49:39,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9/z3 [2022-11-20 19:49:39,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 19:49:39,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c37ada33-72e3-495d-821e-05a43196baca/bin/utaipan-6cKwYrpEi9/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 19:49:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 19:49:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 19:49:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 19:49:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 19:49:39,114 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 19:49:39,114 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 19:49:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-20 19:49:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 19:49:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure loader [2022-11-20 19:49:39,115 INFO L138 BoogieDeclarations]: Found implementation of procedure loader [2022-11-20 19:49:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 19:49:39,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 19:49:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 19:49:39,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 19:49:39,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 19:49:39,118 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 19:49:39,363 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 19:49:39,366 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 19:49:39,484 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L890: assume { :end_inline_scull_trim } true; [2022-11-20 19:49:39,484 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L890-1: assume -2147483648 <= scull_cleanup_module_#t~ret42#1 && scull_cleanup_module_#t~ret42#1 <= 2147483647; [2022-11-20 19:49:39,484 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L890-2: havoc scull_cleanup_module_#t~ret42#1; [2022-11-20 19:49:39,484 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L887: assume { :end_inline_scull_cleanup_module } true; [2022-11-20 19:49:39,485 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint scull_trim_returnLabel#1: scull_cleanup_module_#t~ret42#1 := scull_trim_#res#1; [2022-11-20 19:49:39,485 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint L898: scull_init_module_#res#1 := scull_init_module_~result~0#1; [2022-11-20 19:49:40,200 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 19:49:40,220 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 19:49:40,220 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-20 19:49:40,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:49:40 BoogieIcfgContainer [2022-11-20 19:49:40,223 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 19:49:40,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 19:49:40,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 19:49:40,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 19:49:40,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:49:37" (1/3) ... [2022-11-20 19:49:40,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc5ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:49:40, skipping insertion in model container [2022-11-20 19:49:40,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:49:38" (2/3) ... [2022-11-20 19:49:40,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dc5ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:49:40, skipping insertion in model container [2022-11-20 19:49:40,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:49:40" (3/3) ... [2022-11-20 19:49:40,240 INFO L112 eAbstractionObserver]: Analyzing ICFG scull.i [2022-11-20 19:49:40,253 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 19:49:40,297 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 19:49:40,298 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 45 error locations. [2022-11-20 19:49:40,298 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 19:49:40,533 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-20 19:49:40,594 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-20 19:49:40,617 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 596 places, 602 transitions, 1228 flow [2022-11-20 19:49:40,622 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 596 places, 602 transitions, 1228 flow [2022-11-20 19:49:40,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 596 places, 602 transitions, 1228 flow [2022-11-20 19:49:41,055 INFO L130 PetriNetUnfolder]: 16/599 cut-off events. [2022-11-20 19:49:41,055 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-20 19:49:41,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 599 events. 16/599 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 1798 event pairs, 0 based on Foata normal form. 0/538 useless extension candidates. Maximal degree in co-relation 534. Up to 4 conditions per place. [2022-11-20 19:49:41,139 INFO L119 LiptonReduction]: Number of co-enabled transitions 178250 [2022-11-20 19:50:00,012 INFO L134 LiptonReduction]: Checked pairs total: 1089799 [2022-11-20 19:50:00,012 INFO L136 LiptonReduction]: Total number of compositions: 634 [2022-11-20 19:50:00,019 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 184 places, 186 transitions, 396 flow [2022-11-20 19:50:10,029 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 331060 states, 325229 states have (on average 3.8043563150887527) internal successors, (1237287), 331059 states have internal predecessors, (1237287), 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) [2022-11-20 19:50:10,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 19:50:10,104 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;@250b3cc6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 19:50:10,105 INFO L358 AbstractCegarLoop]: Starting to check reachability of 90 error locations. [2022-11-20 19:50:10,491 INFO L276 IsEmpty]: Start isEmpty. Operand has 331060 states, 325229 states have (on average 3.8043563150887527) internal successors, (1237287), 331059 states have internal predecessors, (1237287), 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) [2022-11-20 19:50:10,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-11-20 19:50:10,496 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:50:10,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-11-20 19:50:10,497 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting loaderErr2ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-11-20 19:50:10,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:50:10,503 INFO L85 PathProgramCache]: Analyzing trace with hash 2353954, now seen corresponding path program 1 times [2022-11-20 19:50:10,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:50:10,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238055798] [2022-11-20 19:50:10,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:50:10,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:50:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:50:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:50:10,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:50:10,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238055798] [2022-11-20 19:50:10,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238055798] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:50:10,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:50:10,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-20 19:50:10,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144538013] [2022-11-20 19:50:10,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:50:10,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 19:50:10,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:50:10,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 19:50:10,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 19:50:12,046 INFO L87 Difference]: Start difference. First operand has 331060 states, 325229 states have (on average 3.8043563150887527) internal successors, (1237287), 331059 states have internal predecessors, (1237287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:50:15,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:50:15,562 INFO L93 Difference]: Finished difference Result 185755 states and 647326 transitions. [2022-11-20 19:50:15,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 19:50:15,565 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2022-11-20 19:50:15,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:50:17,293 INFO L225 Difference]: With dead ends: 185755 [2022-11-20 19:50:17,293 INFO L226 Difference]: Without dead ends: 185704 [2022-11-20 19:50:17,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 19:50:17,301 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-20 19:50:17,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 73 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-20 19:50:18,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185704 states. [2022-11-20 19:50:24,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185704 to 185704. [2022-11-20 19:50:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185704 states, 184265 states have (on average 3.511822646731609) internal successors, (647106), 185703 states have internal predecessors, (647106), 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) [2022-11-20 19:50:27,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185704 states to 185704 states and 647106 transitions. [2022-11-20 19:50:27,157 INFO L78 Accepts]: Start accepts. Automaton has 185704 states and 647106 transitions. Word has length 3 [2022-11-20 19:50:27,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:50:27,158 INFO L495 AbstractCegarLoop]: Abstraction has 185704 states and 647106 transitions. [2022-11-20 19:50:27,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 3.0) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 19:50:27,159 INFO L276 IsEmpty]: Start isEmpty. Operand 185704 states and 647106 transitions. [2022-11-20 19:50:27,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-20 19:50:27,160 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:50:27,160 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-20 19:50:27,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 19:50:27,160 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting loaderErr0ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-11-20 19:50:27,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:50:27,161 INFO L85 PathProgramCache]: Analyzing trace with hash 72973512, now seen corresponding path program 1 times [2022-11-20 19:50:27,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:50:27,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405229198] [2022-11-20 19:50:27,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:50:27,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:50:27,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:50:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:50:27,280 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:50:27,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405229198] [2022-11-20 19:50:27,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405229198] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:50:27,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:50:27,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:50:27,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672558794] [2022-11-20 19:50:27,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:50:27,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:50:27,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:50:27,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:50:27,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:50:27,284 INFO L87 Difference]: Start difference. First operand 185704 states and 647106 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-20 19:50:31,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 19:50:31,115 INFO L93 Difference]: Finished difference Result 288600 states and 988316 transitions. [2022-11-20 19:50:31,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-20 19:50:31,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-11-20 19:50:31,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 19:50:32,967 INFO L225 Difference]: With dead ends: 288600 [2022-11-20 19:50:32,967 INFO L226 Difference]: Without dead ends: 288600 [2022-11-20 19:50:32,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:50:32,968 INFO L413 NwaCegarLoop]: 89 mSDtfsCounter, 149 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-20 19:50:32,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 147 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-20 19:50:34,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288600 states. [2022-11-20 19:50:41,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288600 to 192054. [2022-11-20 19:50:41,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192054 states, 190672 states have (on average 3.46931379541831) internal successors, (661501), 192053 states have internal predecessors, (661501), 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) [2022-11-20 19:50:43,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192054 states to 192054 states and 661501 transitions. [2022-11-20 19:50:43,344 INFO L78 Accepts]: Start accepts. Automaton has 192054 states and 661501 transitions. Word has length 4 [2022-11-20 19:50:43,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 19:50:43,345 INFO L495 AbstractCegarLoop]: Abstraction has 192054 states and 661501 transitions. [2022-11-20 19:50:43,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-11-20 19:50:43,345 INFO L276 IsEmpty]: Start isEmpty. Operand 192054 states and 661501 transitions. [2022-11-20 19:50:43,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-20 19:50:43,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 19:50:43,346 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 19:50:43,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 19:50:43,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting loaderErr1ASSERT_VIOLATIONDATA_RACE === [loaderErr0ASSERT_VIOLATIONDATA_RACE, loaderErr1ASSERT_VIOLATIONDATA_RACE, loaderErr2ASSERT_VIOLATIONDATA_RACE, loaderErr3ASSERT_VIOLATIONDATA_RACE (and 86 more)] === [2022-11-20 19:50:43,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 19:50:43,347 INFO L85 PathProgramCache]: Analyzing trace with hash 280906649, now seen corresponding path program 1 times [2022-11-20 19:50:43,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-20 19:50:43,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003069715] [2022-11-20 19:50:43,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 19:50:43,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 19:50:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 19:50:43,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 19:50:43,455 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-20 19:50:43,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003069715] [2022-11-20 19:50:43,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003069715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 19:50:43,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 19:50:43,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 19:50:43,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946023460] [2022-11-20 19:50:43,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 19:50:43,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-20 19:50:43,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-20 19:50:43,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-20 19:50:43,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-20 19:50:43,458 INFO L87 Difference]: Start difference. First operand 192054 states and 661501 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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)