./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7bef213e800d9f1856c750fa5b59ba443e11e7ea .............................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7bef213e800d9f1856c750fa5b59ba443e11e7ea .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:30:23,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:30:23,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:30:23,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:30:23,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:30:23,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:30:23,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:30:23,449 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:30:23,452 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:30:23,453 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:30:23,454 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:30:23,455 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:30:23,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:30:23,457 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:30:23,458 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:30:23,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:30:23,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:30:23,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:30:23,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:30:23,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:30:23,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:30:23,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:30:23,473 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:30:23,474 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:30:23,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:30:23,478 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:30:23,479 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:30:23,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:30:23,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:30:23,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:30:23,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:30:23,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:30:23,484 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:30:23,485 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:30:23,486 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:30:23,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:30:23,488 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:30:23,488 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:30:23,489 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:30:23,490 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:30:23,491 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:30:23,492 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:30:23,526 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:30:23,530 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:30:23,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:30:23,532 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:30:23,532 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:30:23,534 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:30:23,534 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:30:23,535 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:30:23,535 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:30:23,536 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:30:23,536 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:30:23,540 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:30:23,541 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:30:23,541 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:30:23,541 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:30:23,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:30:23,542 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:30:23,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:30:23,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:30:23,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:30:23,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:30:23,543 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:30:23,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:30:23,544 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:30:23,544 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:30:23,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:30:23,545 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:30:23,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:30:23,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:30:23,547 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:30:23,547 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:23,547 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:30:23,548 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:30:23,548 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:30:23,548 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:30:23,548 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:30:23,549 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:30:23,549 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:30:23,549 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:30:23,549 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7bef213e800d9f1856c750fa5b59ba443e11e7ea [2021-10-11 02:30:23,808 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:30:23,847 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:30:23,849 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:30:23,851 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:30:23,851 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:30:23,852 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2021-10-11 02:30:23,918 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/data/848991e1a/1a2767419ddc487cbd0a4016977af2b2/FLAGd084415c5 [2021-10-11 02:30:24,318 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:30:24,319 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2021-10-11 02:30:24,326 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/data/848991e1a/1a2767419ddc487cbd0a4016977af2b2/FLAGd084415c5 [2021-10-11 02:30:24,711 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/data/848991e1a/1a2767419ddc487cbd0a4016977af2b2 [2021-10-11 02:30:24,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:30:24,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:30:24,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:24,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:30:24,721 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:30:24,722 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:24" (1/1) ... [2021-10-11 02:30:24,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6978010e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:24, skipping insertion in model container [2021-10-11 02:30:24,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:24" (1/1) ... [2021-10-11 02:30:24,731 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:30:24,752 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:30:24,945 WARN L226 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_fb096838-399e-4472-aaa6-6487fef7463d/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2021-10-11 02:30:24,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:24,963 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:30:24,995 WARN L226 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_fb096838-399e-4472-aaa6-6487fef7463d/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2021-10-11 02:30:24,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:25,013 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:30:25,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:25 WrapperNode [2021-10-11 02:30:25,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:25,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:25,016 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:30:25,016 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:30:25,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:25" (1/1) ... [2021-10-11 02:30:25,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:25" (1/1) ... [2021-10-11 02:30:25,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:25,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:30:25,059 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:30:25,059 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:30:25,068 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:25" (1/1) ... [2021-10-11 02:30:25,068 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:25" (1/1) ... [2021-10-11 02:30:25,072 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:25" (1/1) ... [2021-10-11 02:30:25,072 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:25" (1/1) ... [2021-10-11 02:30:25,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:25" (1/1) ... [2021-10-11 02:30:25,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:25" (1/1) ... [2021-10-11 02:30:25,092 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:25" (1/1) ... [2021-10-11 02:30:25,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:30:25,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:30:25,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:30:25,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:30:25,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:25" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:30:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:30:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-11 02:30:25,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-11 02:30:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-11 02:30:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:30:25,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:30:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-11 02:30:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-10-11 02:30:25,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:30:25,702 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:30:25,702 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-11 02:30:25,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:25 BoogieIcfgContainer [2021-10-11 02:30:25,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:30:25,706 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:30:25,706 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:30:25,716 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:30:25,716 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:30:24" (1/3) ... [2021-10-11 02:30:25,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3863ca8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:25, skipping insertion in model container [2021-10-11 02:30:25,717 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:25" (2/3) ... [2021-10-11 02:30:25,717 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3863ca8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:25, skipping insertion in model container [2021-10-11 02:30:25,718 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:25" (3/3) ... [2021-10-11 02:30:25,719 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832a.c [2021-10-11 02:30:25,738 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:30:25,742 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:30:25,757 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:30:25,779 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:30:25,779 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:30:25,779 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:30:25,780 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:30:25,780 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:30:25,780 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:30:25,780 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:30:25,780 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:30:25,791 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2021-10-11 02:30:25,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-11 02:30:25,794 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:25,794 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:25,795 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:25,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:25,799 INFO L82 PathProgramCache]: Analyzing trace with hash -836543721, now seen corresponding path program 1 times [2021-10-11 02:30:25,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:25,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961269971] [2021-10-11 02:30:25,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:25,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:25,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:25,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961269971] [2021-10-11 02:30:25,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:25,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:25,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069694113] [2021-10-11 02:30:25,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:30:25,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:30:26,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:30:26,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:30:26,018 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2021-10-11 02:30:26,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:26,048 INFO L93 Difference]: Finished difference Result 59 states and 97 transitions. [2021-10-11 02:30:26,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:30:26,049 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2021-10-11 02:30:26,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:26,066 INFO L225 Difference]: With dead ends: 59 [2021-10-11 02:30:26,066 INFO L226 Difference]: Without dead ends: 28 [2021-10-11 02:30:26,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:30:26,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-11 02:30:26,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-10-11 02:30:26,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-10-11 02:30:26,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 36 transitions. [2021-10-11 02:30:26,109 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 36 transitions. Word has length 7 [2021-10-11 02:30:26,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:26,109 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 36 transitions. [2021-10-11 02:30:26,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:30:26,109 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 36 transitions. [2021-10-11 02:30:26,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:30:26,110 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:26,110 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:26,111 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:30:26,111 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:26,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:26,115 INFO L82 PathProgramCache]: Analyzing trace with hash 2065220720, now seen corresponding path program 1 times [2021-10-11 02:30:26,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:30:26,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739005244] [2021-10-11 02:30:26,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:30:26,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:30:26,212 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:30:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:30:26,287 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:30:26,334 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:30:26,334 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:30:26,335 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:30:26,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:30:26 BoogieIcfgContainer [2021-10-11 02:30:26,397 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:30:26,398 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:30:26,398 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:30:26,398 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:30:26,399 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:25" (3/4) ... [2021-10-11 02:30:26,402 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:30:26,402 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:30:26,406 INFO L168 Benchmark]: Toolchain (without parser) took 1687.86 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.5 MB in the beginning and 79.2 MB in the end (delta: -26.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:26,407 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 88.1 MB. Free memory is still 69.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:30:26,409 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.03 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.3 MB in the beginning and 81.9 MB in the end (delta: -29.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:26,410 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.78 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 79.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:26,411 INFO L168 Benchmark]: Boogie Preprocessor took 36.45 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 78.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:26,412 INFO L168 Benchmark]: RCFGBuilder took 608.56 ms. Allocated memory is still 107.0 MB. Free memory was 78.1 MB in the beginning and 75.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:26,413 INFO L168 Benchmark]: TraceAbstraction took 690.59 ms. Allocated memory is still 107.0 MB. Free memory was 74.8 MB in the beginning and 79.8 MB in the end (delta: -5.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:26,416 INFO L168 Benchmark]: Witness Printer took 5.01 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 79.2 MB in the end (delta: 642.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:30:26,426 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 88.1 MB. Free memory is still 69.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 297.03 ms. Allocated memory was 88.1 MB in the beginning and 107.0 MB in the end (delta: 18.9 MB). Free memory was 52.3 MB in the beginning and 81.9 MB in the end (delta: -29.6 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.78 ms. Allocated memory is still 107.0 MB. Free memory was 81.7 MB in the beginning and 79.8 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 36.45 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 78.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 608.56 ms. Allocated memory is still 107.0 MB. Free memory was 78.1 MB in the beginning and 75.4 MB in the end (delta: 2.8 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 690.59 ms. Allocated memory is still 107.0 MB. Free memory was 74.8 MB in the beginning and 79.8 MB in the end (delta: -5.0 MB). Peak memory consumption was 22.7 MB. Max. memory is 16.1 GB. * Witness Printer took 5.01 ms. Allocated memory is still 107.0 MB. Free memory was 79.8 MB in the beginning and 79.2 MB in the end (delta: 642.1 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 124]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 123, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of bitwiseAnd at line 48, overapproximation of someBinaryArithmeticFLOAToperation at line 52. Possible FailurePath: [L17-L36] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; [L119] float x = 0.0f; [L39] float y, hi, lo, c, t; [L40] __int32_t k = 0, xsb, sx; [L41] __uint32_t hx; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={7:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L44] ieee_float_shape_type gf_u; [L45] gf_u.value = (x) [L46] EXPR gf_u.word [L46] (sx) = gf_u.word [L48] xsb = (sx >> 31) & 1 [L49] hx = sx & 0x7fffffff VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={7:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L51] COND TRUE ((hx) > 0x7f800000L) [L52] return x + x; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={7:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L120] float res = __ieee754_expf(x); [L123] COND TRUE res != 1.0f VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={7:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L124] reach_error() VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={7:0}, ln2LO_exp={9:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 38 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 6 ConstructedInterpolants, 0 QuantifiedInterpolants, 36 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:30:28,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:30:28,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:30:28,896 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:30:28,896 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:30:28,901 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:30:28,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:30:28,908 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:30:28,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:30:28,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:30:28,920 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:30:28,922 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:30:28,922 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:30:28,925 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:30:28,926 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:30:28,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:30:28,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:30:28,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:30:28,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:30:28,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:30:28,946 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:30:28,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:30:28,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:30:28,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:30:28,961 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:30:28,961 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:30:28,962 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:30:28,964 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:30:28,964 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:30:28,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:30:28,966 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:30:28,967 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:30:28,969 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:30:28,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:30:28,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:30:28,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:30:28,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:30:28,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:30:28,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:30:28,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:30:28,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:30:28,976 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:30:29,018 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:30:29,018 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:30:29,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:30:29,020 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:30:29,020 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:30:29,020 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:30:29,021 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:30:29,021 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:30:29,021 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:30:29,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:30:29,023 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:30:29,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:30:29,024 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:30:29,024 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:30:29,024 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:30:29,024 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:30:29,025 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:30:29,025 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:30:29,025 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:30:29,025 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:30:29,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:30:29,025 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:30:29,026 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:30:29,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:30:29,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:30:29,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:30:29,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:29,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:30:29,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:30:29,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:30:29,027 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:30:29,027 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:30:29,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:30:29,028 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:30:29,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:30:29,028 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7bef213e800d9f1856c750fa5b59ba443e11e7ea [2021-10-11 02:30:29,445 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:30:29,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:30:29,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:30:29,478 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:30:29,478 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:30:29,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2021-10-11 02:30:29,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/data/b2db4ee88/f64052badcc3436caf23a9ecf8cabdb2/FLAGffc9d3812 [2021-10-11 02:30:30,119 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:30:30,120 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2021-10-11 02:30:30,127 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/data/b2db4ee88/f64052badcc3436caf23a9ecf8cabdb2/FLAGffc9d3812 [2021-10-11 02:30:30,495 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/data/b2db4ee88/f64052badcc3436caf23a9ecf8cabdb2 [2021-10-11 02:30:30,498 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:30:30,500 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:30:30,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:30,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:30:30,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:30:30,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:30" (1/1) ... [2021-10-11 02:30:30,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47c8f8fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:30, skipping insertion in model container [2021-10-11 02:30:30,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:30:30" (1/1) ... [2021-10-11 02:30:30,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:30:30,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:30:30,723 WARN L226 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_fb096838-399e-4472-aaa6-6487fef7463d/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2021-10-11 02:30:30,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:30,765 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:30:30,858 WARN L226 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_fb096838-399e-4472-aaa6-6487fef7463d/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c[3180,3193] [2021-10-11 02:30:30,864 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:30:30,884 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:30:30,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:30 WrapperNode [2021-10-11 02:30:30,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:30:30,886 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:30,887 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:30:30,887 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:30:30,895 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:30" (1/1) ... [2021-10-11 02:30:30,917 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:30" (1/1) ... [2021-10-11 02:30:30,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:30:30,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:30:30,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:30:30,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:30:30,961 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:30" (1/1) ... [2021-10-11 02:30:30,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:30" (1/1) ... [2021-10-11 02:30:30,968 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:30" (1/1) ... [2021-10-11 02:30:30,968 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:30" (1/1) ... [2021-10-11 02:30:30,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:30" (1/1) ... [2021-10-11 02:30:30,990 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:30" (1/1) ... [2021-10-11 02:30:30,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:30" (1/1) ... [2021-10-11 02:30:30,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:30:31,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:30:31,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:30:31,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:30:31,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:30" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:30:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intFLOATTYPE4 [2021-10-11 02:30:31,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:30:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:30:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE4 [2021-10-11 02:30:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-11 02:30:31,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:30:31,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:30:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE4 [2021-10-11 02:30:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-11 02:30:31,080 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-11 02:30:41,954 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:30:41,955 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-10-11 02:30:41,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:41 BoogieIcfgContainer [2021-10-11 02:30:41,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:30:41,958 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:30:41,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:30:41,962 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:30:41,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:30:30" (1/3) ... [2021-10-11 02:30:41,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efe0c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:41, skipping insertion in model container [2021-10-11 02:30:41,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:30:30" (2/3) ... [2021-10-11 02:30:41,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6efe0c1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:30:41, skipping insertion in model container [2021-10-11 02:30:41,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:41" (3/3) ... [2021-10-11 02:30:41,965 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832a.c [2021-10-11 02:30:41,980 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:30:41,983 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:30:41,995 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:30:42,017 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:30:42,018 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:30:42,018 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:30:42,018 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:30:42,019 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:30:42,019 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:30:42,019 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:30:42,019 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:30:42,032 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2021-10-11 02:30:42,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:30:42,037 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:42,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:42,039 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:42,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:42,045 INFO L82 PathProgramCache]: Analyzing trace with hash 354246130, now seen corresponding path program 1 times [2021-10-11 02:30:42,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:30:42,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1744929253] [2021-10-11 02:30:42,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2021-10-11 02:30:42,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:42,656 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:30:42,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:42,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:42,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:30:42,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1744929253] [2021-10-11 02:30:42,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:42,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:30:42,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30111688] [2021-10-11 02:30:42,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:30:42,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:30:42,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:30:42,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:30:42,727 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2021-10-11 02:30:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:42,745 INFO L93 Difference]: Finished difference Result 70 states and 112 transitions. [2021-10-11 02:30:42,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:30:42,746 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2021-10-11 02:30:42,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:42,755 INFO L225 Difference]: With dead ends: 70 [2021-10-11 02:30:42,755 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 02:30:42,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:30:42,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 02:30:42,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-10-11 02:30:42,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2021-10-11 02:30:42,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 43 transitions. [2021-10-11 02:30:42,791 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 43 transitions. Word has length 8 [2021-10-11 02:30:42,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:42,791 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 43 transitions. [2021-10-11 02:30:42,791 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:30:42,792 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 43 transitions. [2021-10-11 02:30:42,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-11 02:30:42,792 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:42,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:43,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:30:43,014 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:43,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:43,015 INFO L82 PathProgramCache]: Analyzing trace with hash 325000437, now seen corresponding path program 1 times [2021-10-11 02:30:43,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:30:43,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1290541949] [2021-10-11 02:30:43,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2021-10-11 02:30:43,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:43,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:30:43,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:43,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:43,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:30:43,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1290541949] [2021-10-11 02:30:43,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:43,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:30:43,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197379212] [2021-10-11 02:30:43,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:30:43,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:30:43,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:30:43,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:30:43,794 INFO L87 Difference]: Start difference. First operand 33 states and 43 transitions. Second operand 5 states. [2021-10-11 02:30:51,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:30:51,264 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2021-10-11 02:30:51,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:30:51,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2021-10-11 02:30:51,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:30:51,339 INFO L225 Difference]: With dead ends: 54 [2021-10-11 02:30:51,339 INFO L226 Difference]: Without dead ends: 33 [2021-10-11 02:30:51,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 02:30:51,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-11 02:30:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2021-10-11 02:30:51,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:30:51,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-10-11 02:30:51,346 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 9 [2021-10-11 02:30:51,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:30:51,346 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-10-11 02:30:51,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:30:51,347 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-10-11 02:30:51,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-11 02:30:51,347 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:30:51,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:30:51,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:30:51,560 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:30:51,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:30:51,561 INFO L82 PathProgramCache]: Analyzing trace with hash -239562945, now seen corresponding path program 1 times [2021-10-11 02:30:51,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:30:51,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2033404968] [2021-10-11 02:30:51,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2021-10-11 02:30:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:30:52,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 02:30:52,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:30:52,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:30:52,317 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:30:52,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2033404968] [2021-10-11 02:30:52,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:30:52,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 02:30:52,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161751120] [2021-10-11 02:30:52,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:30:52,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:30:52,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:30:52,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:30:52,320 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 6 states. [2021-10-11 02:31:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:08,230 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions. [2021-10-11 02:31:08,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:31:08,230 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2021-10-11 02:31:08,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:08,231 INFO L225 Difference]: With dead ends: 33 [2021-10-11 02:31:08,231 INFO L226 Difference]: Without dead ends: 29 [2021-10-11 02:31:08,232 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-11 02:31:08,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-11 02:31:08,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-11 02:31:08,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-10-11 02:31:08,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-11 02:31:08,236 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 15 [2021-10-11 02:31:08,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:08,236 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-11 02:31:08,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:31:08,236 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-11 02:31:08,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 02:31:08,237 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:31:08,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:31:08,437 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:31:08,438 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:31:08,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:31:08,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1708303706, now seen corresponding path program 1 times [2021-10-11 02:31:08,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:31:08,439 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406961656] [2021-10-11 02:31:08,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2021-10-11 02:31:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:31:09,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-11 02:31:09,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:31:09,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:31:09,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:31:09,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406961656] [2021-10-11 02:31:09,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:31:09,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:31:09,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489899711] [2021-10-11 02:31:09,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:31:09,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:31:09,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:31:09,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:09,831 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 4 states. [2021-10-11 02:31:09,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:31:09,869 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-10-11 02:31:09,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:31:09,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-10-11 02:31:09,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:31:09,870 INFO L225 Difference]: With dead ends: 29 [2021-10-11 02:31:09,870 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:31:09,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:31:09,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:31:09,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:31:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:31:09,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:31:09,872 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-11 02:31:09,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:31:09,872 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:31:09,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:31:09,872 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:31:09,872 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:31:10,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:31:10,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:31:10,245 INFO L262 CegarLoopResult]: For program point L60(lines 60 75) no Hoare annotation was computed. [2021-10-11 02:31:10,245 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:31:10,245 INFO L262 CegarLoopResult]: For program point L61(lines 61 70) no Hoare annotation was computed. [2021-10-11 02:31:10,246 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:31:10,246 INFO L262 CegarLoopResult]: For program point L61-2(lines 61 70) no Hoare annotation was computed. [2021-10-11 02:31:10,246 INFO L262 CegarLoopResult]: For program point L53(lines 53 54) no Hoare annotation was computed. [2021-10-11 02:31:10,246 INFO L262 CegarLoopResult]: For program point L86-1(lines 86 90) no Hoare annotation was computed. [2021-10-11 02:31:10,246 INFO L258 CegarLoopResult]: At program point L86-2(lines 86 90) the Hoare annotation is: false [2021-10-11 02:31:10,246 INFO L265 CegarLoopResult]: At program point L128(lines 113 129) the Hoare annotation is: true [2021-10-11 02:31:10,246 INFO L262 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2021-10-11 02:31:10,246 INFO L262 CegarLoopResult]: For program point L54-2(line 54) no Hoare annotation was computed. [2021-10-11 02:31:10,246 INFO L262 CegarLoopResult]: For program point L104(lines 104 108) no Hoare annotation was computed. [2021-10-11 02:31:10,247 INFO L262 CegarLoopResult]: For program point L104-1(lines 97 110) no Hoare annotation was computed. [2021-10-11 02:31:10,247 INFO L262 CegarLoopResult]: For program point L104-2(lines 104 108) no Hoare annotation was computed. [2021-10-11 02:31:10,247 INFO L262 CegarLoopResult]: For program point L55(lines 55 56) no Hoare annotation was computed. [2021-10-11 02:31:10,247 INFO L262 CegarLoopResult]: For program point L80(lines 80 83) no Hoare annotation was computed. [2021-10-11 02:31:10,247 INFO L262 CegarLoopResult]: For program point L72(lines 72 75) no Hoare annotation was computed. [2021-10-11 02:31:10,247 INFO L262 CegarLoopResult]: For program point L72-2(lines 60 75) no Hoare annotation was computed. [2021-10-11 02:31:10,247 INFO L262 CegarLoopResult]: For program point L73(lines 73 74) no Hoare annotation was computed. [2021-10-11 02:31:10,247 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:31:10,247 INFO L262 CegarLoopResult]: For program point L123(lines 123 126) no Hoare annotation was computed. [2021-10-11 02:31:10,247 INFO L262 CegarLoopResult]: For program point L57(lines 57 58) no Hoare annotation was computed. [2021-10-11 02:31:10,248 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 124) no Hoare annotation was computed. [2021-10-11 02:31:10,248 INFO L262 CegarLoopResult]: For program point L99-1(lines 99 103) no Hoare annotation was computed. [2021-10-11 02:31:10,248 INFO L258 CegarLoopResult]: At program point L99-2(lines 99 103) the Hoare annotation is: false [2021-10-11 02:31:10,248 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:31:10,248 INFO L262 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2021-10-11 02:31:10,248 INFO L262 CegarLoopResult]: For program point L91(lines 91 95) no Hoare annotation was computed. [2021-10-11 02:31:10,248 INFO L262 CegarLoopResult]: For program point L91-1(lines 84 97) no Hoare annotation was computed. [2021-10-11 02:31:10,248 INFO L262 CegarLoopResult]: For program point L91-2(lines 91 95) no Hoare annotation was computed. [2021-10-11 02:31:10,248 INFO L262 CegarLoopResult]: For program point L84(lines 84 110) no Hoare annotation was computed. [2021-10-11 02:31:10,248 INFO L262 CegarLoopResult]: For program point L51(lines 51 52) no Hoare annotation was computed. [2021-10-11 02:31:10,249 INFO L258 CegarLoopResult]: At program point L109(lines 38 111) the Hoare annotation is: (let ((.cse0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0)))) (and (= currentRoundingMode roundNearestTiesToEven) (= ~one_exp~0 .cse0) (= ULTIMATE.start___ieee754_expf_~x (_ +zero 8 24)) (= |ULTIMATE.start___ieee754_expf_#res| (fp.add currentRoundingMode .cse0 (_ +zero 8 24))))) [2021-10-11 02:31:10,249 INFO L262 CegarLoopResult]: For program point L43-1(lines 43 47) no Hoare annotation was computed. [2021-10-11 02:31:10,249 INFO L258 CegarLoopResult]: At program point L43-2(lines 43 47) the Hoare annotation is: (and (= currentRoundingMode roundNearestTiesToEven) (= ~one_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1.0))) (= ~huge_exp~0 ((_ to_fp 8 24) currentRoundingMode ((_ to_fp 11 53) currentRoundingMode 1000000000000000000000000000000.0))) (= ULTIMATE.start___ieee754_expf_~x (_ +zero 8 24))) [2021-10-11 02:31:10,249 INFO L262 CegarLoopResult]: For program point L43-3(lines 43 47) no Hoare annotation was computed. [2021-10-11 02:31:10,264 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:31:10,269 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:31:10,271 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:31:10,271 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:31:10,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:31:10 BoogieIcfgContainer [2021-10-11 02:31:10,274 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:31:10,275 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:31:10,275 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:31:10,275 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:31:10,276 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:30:41" (3/4) ... [2021-10-11 02:31:10,279 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:31:10,295 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-11 02:31:10,296 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-11 02:31:10,296 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:31:10,297 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:31:10,324 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) [2021-10-11 02:31:10,390 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fb096838-399e-4472-aaa6-6487fef7463d/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:31:10,390 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:31:10,392 INFO L168 Benchmark]: Toolchain (without parser) took 39890.53 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 32.6 MB in the beginning and 42.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 8.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:10,392 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 54.5 MB. Free memory is still 35.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:31:10,396 INFO L168 Benchmark]: CACSL2BoogieTranslator took 378.08 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 32.4 MB in the beginning and 54.6 MB in the end (delta: -22.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:10,396 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.78 ms. Allocated memory is still 73.4 MB. Free memory was 54.6 MB in the beginning and 52.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:10,397 INFO L168 Benchmark]: Boogie Preprocessor took 46.75 ms. Allocated memory is still 73.4 MB. Free memory was 52.4 MB in the beginning and 50.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:10,397 INFO L168 Benchmark]: RCFGBuilder took 10948.92 ms. Allocated memory is still 73.4 MB. Free memory was 50.4 MB in the beginning and 41.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:10,398 INFO L168 Benchmark]: TraceAbstraction took 28315.89 ms. Allocated memory is still 73.4 MB. Free memory was 40.5 MB in the beginning and 48.5 MB in the end (delta: -8.0 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:10,398 INFO L168 Benchmark]: Witness Printer took 115.26 ms. Allocated memory is still 73.4 MB. Free memory was 48.5 MB in the beginning and 42.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:31:10,400 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 54.5 MB. Free memory is still 35.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 378.08 ms. Allocated memory was 54.5 MB in the beginning and 73.4 MB in the end (delta: 18.9 MB). Free memory was 32.4 MB in the beginning and 54.6 MB in the end (delta: -22.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 64.78 ms. Allocated memory is still 73.4 MB. Free memory was 54.6 MB in the beginning and 52.6 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 46.75 ms. Allocated memory is still 73.4 MB. Free memory was 52.4 MB in the beginning and 50.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 10948.92 ms. Allocated memory is still 73.4 MB. Free memory was 50.4 MB in the beginning and 41.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 16.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 28315.89 ms. Allocated memory is still 73.4 MB. Free memory was 40.5 MB in the beginning and 48.5 MB in the end (delta: -8.0 MB). Peak memory consumption was 11.6 MB. Max. memory is 16.1 GB. * Witness Printer took 115.26 ms. Allocated memory is still 73.4 MB. Free memory was 48.5 MB in the beginning and 42.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 124]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 113]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 99]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 38]: Loop Invariant [2021-10-11 02:31:10,407 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:31:10,408 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && x == ~Pluszero~LONGDOUBLE()) && \result == ~fp.add~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0)), ~Pluszero~LONGDOUBLE()) - InvariantResult [Line: 43]: Loop Invariant [2021-10-11 02:31:10,409 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:31:10,409 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: ((unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven && one_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0))) && huge_exp == ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1.0E30))) && x == ~Pluszero~LONGDOUBLE() - InvariantResult [Line: 86]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 28.0s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 23.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 64 SDslu, 105 SDs, 0 SdLazy, 38 SolverSat, 5 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 22.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 48 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 49 NumberOfCodeBlocks, 49 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 45 ConstructedInterpolants, 1 QuantifiedInterpolants, 6625 SizeOfPredicates, 19 NumberOfNonLiveVariables, 307 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...