./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float20.i --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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/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 dcedd10b8fa79fdd7f584d24ebbda0efe903404a .................................................................................................................................................................................................................................................... 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float20.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/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 dcedd10b8fa79fdd7f584d24ebbda0efe903404a ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 02:26:44,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:44,467 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:44,505 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:44,506 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:44,508 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:44,511 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:44,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:44,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:44,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:44,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:44,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:44,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:44,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:44,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:44,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:44,531 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:44,533 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:44,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:44,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:44,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:44,544 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:44,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:44,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:44,552 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:44,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:44,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:44,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:44,556 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:44,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:44,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:44,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:44,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:44,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:44,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:44,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:44,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:44,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:44,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:44,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:44,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:44,570 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:26:44,618 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:44,618 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:44,620 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:44,620 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:44,621 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:44,621 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:44,621 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:26:44,621 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:44,629 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:44,629 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:26:44,630 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:26:44,630 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:44,630 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:26:44,630 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:26:44,631 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:26:44,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:44,632 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:44,632 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:26:44,632 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:44,633 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:44,633 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:44,633 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:44,633 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:44,633 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:44,634 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:44,634 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:44,634 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:44,634 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:44,635 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:44,635 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:44,635 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:44,635 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:44,636 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:44,636 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:44,636 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:26:44,636 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:26:44,637 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:44,637 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:44,637 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:44,637 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcedd10b8fa79fdd7f584d24ebbda0efe903404a [2021-10-11 02:26:45,015 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:45,045 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:45,048 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:45,050 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:45,051 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:45,053 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-10-11 02:26:45,152 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/data/c644bda17/4469aab6172e4350b47af98025c88796/FLAGe78dd2615 [2021-10-11 02:26:45,858 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:45,862 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-10-11 02:26:45,878 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/data/c644bda17/4469aab6172e4350b47af98025c88796/FLAGe78dd2615 [2021-10-11 02:26:46,176 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/data/c644bda17/4469aab6172e4350b47af98025c88796 [2021-10-11 02:26:46,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:46,183 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:46,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:46,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:46,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:46,194 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:46" (1/1) ... [2021-10-11 02:26:46,197 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@300f6bed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:46, skipping insertion in model container [2021-10-11 02:26:46,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:46" (1/1) ... [2021-10-11 02:26:46,208 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:46,227 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:46,454 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-10-11 02:26:46,468 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-10-11 02:26:46,480 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-10-11 02:26:46,483 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:46,496 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:46,516 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-10-11 02:26:46,522 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-10-11 02:26:46,526 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-10-11 02:26:46,529 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:46,550 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:46,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:46 WrapperNode [2021-10-11 02:26:46,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:46,553 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:46,553 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:46,554 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:46,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:46" (1/1) ... [2021-10-11 02:26:46,576 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:46" (1/1) ... [2021-10-11 02:26:46,616 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:46,617 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:46,617 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:46,618 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:46,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:46" (1/1) ... [2021-10-11 02:26:46,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:46" (1/1) ... [2021-10-11 02:26:46,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:46" (1/1) ... [2021-10-11 02:26:46,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:46" (1/1) ... [2021-10-11 02:26:46,651 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:46" (1/1) ... [2021-10-11 02:26:46,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:46" (1/1) ... [2021-10-11 02:26:46,656 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:46" (1/1) ... [2021-10-11 02:26:46,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:46,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:46,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:46,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:46,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:46" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/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 02:26:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:26:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:46,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:46,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:47,103 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:47,104 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:26:47,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:47 BoogieIcfgContainer [2021-10-11 02:26:47,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:47,109 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:47,109 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:47,113 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:47,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:46" (1/3) ... [2021-10-11 02:26:47,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411f5bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:47, skipping insertion in model container [2021-10-11 02:26:47,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:46" (2/3) ... [2021-10-11 02:26:47,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411f5bd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:47, skipping insertion in model container [2021-10-11 02:26:47,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:47" (3/3) ... [2021-10-11 02:26:47,118 INFO L111 eAbstractionObserver]: Analyzing ICFG float20.i [2021-10-11 02:26:47,151 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:47,155 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 02:26:47,182 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:26:47,254 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:47,254 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:47,254 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:47,255 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:47,255 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:47,255 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:47,255 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:47,255 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:47,286 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2021-10-11 02:26:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-11 02:26:47,315 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:47,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-11 02:26:47,316 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:47,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:47,337 INFO L82 PathProgramCache]: Analyzing trace with hash 95524, now seen corresponding path program 1 times [2021-10-11 02:26:47,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:26:47,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782634607] [2021-10-11 02:26:47,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:26:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:26:47,479 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:26:47,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 02:26:47,499 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 02:26:47,524 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-11 02:26:47,525 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 02:26:47,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:26:47,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:26:47 BoogieIcfgContainer [2021-10-11 02:26:47,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:26:47,559 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:26:47,559 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:26:47,560 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:26:47,561 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:47" (3/4) ... [2021-10-11 02:26:47,577 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-11 02:26:47,578 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:26:47,580 INFO L168 Benchmark]: Toolchain (without parser) took 1396.25 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 75.1 MB in the beginning and 103.2 MB in the end (delta: -28.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:47,581 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 104.9 MB. Free memory is still 60.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:47,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.01 ms. Allocated memory is still 104.9 MB. Free memory was 74.9 MB in the beginning and 77.2 MB in the end (delta: -2.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:47,584 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.62 ms. Allocated memory is still 104.9 MB. Free memory was 77.2 MB in the beginning and 75.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:47,585 INFO L168 Benchmark]: Boogie Preprocessor took 41.30 ms. Allocated memory is still 104.9 MB. Free memory was 75.8 MB in the beginning and 74.8 MB in the end (delta: 994.7 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:47,586 INFO L168 Benchmark]: RCFGBuilder took 447.38 ms. Allocated memory is still 104.9 MB. Free memory was 74.8 MB in the beginning and 56.6 MB in the end (delta: 18.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:26:47,587 INFO L168 Benchmark]: TraceAbstraction took 446.72 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 55.9 MB in the beginning and 103.2 MB in the end (delta: -47.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:47,588 INFO L168 Benchmark]: Witness Printer took 18.87 ms. Allocated memory is still 132.1 MB. Free memory is still 103.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:26:47,607 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 104.9 MB. Free memory is still 60.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 364.01 ms. Allocated memory is still 104.9 MB. Free memory was 74.9 MB in the beginning and 77.2 MB in the end (delta: -2.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.62 ms. Allocated memory is still 104.9 MB. Free memory was 77.2 MB in the beginning and 75.8 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 41.30 ms. Allocated memory is still 104.9 MB. Free memory was 75.8 MB in the beginning and 74.8 MB in the end (delta: 994.7 kB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 447.38 ms. Allocated memory is still 104.9 MB. Free memory was 74.8 MB in the beginning and 56.6 MB in the end (delta: 18.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 446.72 ms. Allocated memory was 104.9 MB in the beginning and 132.1 MB in the end (delta: 27.3 MB). Free memory was 55.9 MB in the beginning and 103.2 MB in the end (delta: -47.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 18.87 ms. Allocated memory is still 132.1 MB. Free memory is still 103.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 21]: 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 21, overapproximation of someBinaryArithmeticDOUBLEoperation at line 18, overapproximation of someBinaryArithmeticFLOAToperation at line 19. Possible FailurePath: [L48] float f=__VERIFIER_nondet_float(); [L17] COND FALSE !(!(min == 0x1.fffffep-105f)) [L18] float modifier = (0x1.0p-23 * (1<<1)); [L19] float ulpdiff = min * modifier; [L21] COND TRUE !(ulpdiff == 0x1p-126f) [L21] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 02:26:50,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:26:50,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:26:50,398 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:26:50,399 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:26:50,401 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:26:50,403 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:26:50,406 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:26:50,408 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:26:50,409 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:26:50,411 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:26:50,412 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:26:50,413 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:26:50,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:26:50,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:26:50,417 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:26:50,418 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:26:50,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:26:50,422 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:26:50,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:26:50,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:26:50,428 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:26:50,430 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:26:50,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:26:50,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:26:50,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:26:50,436 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:26:50,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:26:50,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:26:50,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:26:50,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:26:50,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:26:50,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:26:50,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:26:50,444 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:26:50,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:26:50,445 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:26:50,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:26:50,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:26:50,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:26:50,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:26:50,449 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-11 02:26:50,492 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:26:50,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:26:50,494 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:26:50,494 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:26:50,495 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:26:50,495 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:26:50,495 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:26:50,495 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:26:50,495 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:26:50,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:26:50,498 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:26:50,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:26:50,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:26:50,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:26:50,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:26:50,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:26:50,500 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:26:50,500 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-11 02:26:50,500 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-11 02:26:50,500 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:26:50,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:26:50,501 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:26:50,501 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:26:50,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:26:50,502 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 02:26:50,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:26:50,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:26:50,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:26:50,502 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:26:50,503 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:26:50,503 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-11 02:26:50,503 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-11 02:26:50,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:26:50,504 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:26:50,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:26:50,504 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dcedd10b8fa79fdd7f584d24ebbda0efe903404a [2021-10-11 02:26:50,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:26:50,912 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:26:50,914 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:26:50,916 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:26:50,916 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:26:50,917 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-10-11 02:26:50,983 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/data/54f73e2dc/715e346adff94f31b07cff4b09caf3e1/FLAGe49c4b33b [2021-10-11 02:26:51,448 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:26:51,450 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/sv-benchmarks/c/floats-cbmc-regression/float20.i [2021-10-11 02:26:51,457 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/data/54f73e2dc/715e346adff94f31b07cff4b09caf3e1/FLAGe49c4b33b [2021-10-11 02:26:51,818 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/data/54f73e2dc/715e346adff94f31b07cff4b09caf3e1 [2021-10-11 02:26:51,821 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:26:51,823 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:26:51,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:51,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:26:51,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:26:51,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:51" (1/1) ... [2021-10-11 02:26:51,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58a08eee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:51, skipping insertion in model container [2021-10-11 02:26:51,834 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:26:51" (1/1) ... [2021-10-11 02:26:51,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:26:51,863 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:26:52,068 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-10-11 02:26:52,089 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-10-11 02:26:52,097 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-10-11 02:26:52,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:52,128 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:26:52,180 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/sv-benchmarks/c/floats-cbmc-regression/float20.i[1032,1045] [2021-10-11 02:26:52,191 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/sv-benchmarks/c/floats-cbmc-regression/float20.i[1306,1319] [2021-10-11 02:26:52,199 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_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/sv-benchmarks/c/floats-cbmc-regression/float20.i[1464,1477] [2021-10-11 02:26:52,205 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:26:52,221 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:26:52,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:52 WrapperNode [2021-10-11 02:26:52,221 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:26:52,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:52,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:26:52,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:26:52,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:52" (1/1) ... [2021-10-11 02:26:52,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:52" (1/1) ... [2021-10-11 02:26:52,258 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:26:52,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:26:52,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:26:52,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:26:52,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:52" (1/1) ... [2021-10-11 02:26:52,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:52" (1/1) ... [2021-10-11 02:26:52,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:52" (1/1) ... [2021-10-11 02:26:52,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:52" (1/1) ... [2021-10-11 02:26:52,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:52" (1/1) ... [2021-10-11 02:26:52,281 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:52" (1/1) ... [2021-10-11 02:26:52,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:52" (1/1) ... [2021-10-11 02:26:52,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:26:52,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:26:52,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:26:52,288 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:26:52,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:52" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/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 02:26:52,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-11 02:26:52,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:26:52,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:26:52,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:26:55,335 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:26:55,336 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-11 02:26:55,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:55 BoogieIcfgContainer [2021-10-11 02:26:55,338 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:26:55,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:26:55,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:26:55,343 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:26:55,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:26:51" (1/3) ... [2021-10-11 02:26:55,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d34d09c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:55, skipping insertion in model container [2021-10-11 02:26:55,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:26:52" (2/3) ... [2021-10-11 02:26:55,345 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d34d09c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:26:55, skipping insertion in model container [2021-10-11 02:26:55,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:55" (3/3) ... [2021-10-11 02:26:55,346 INFO L111 eAbstractionObserver]: Analyzing ICFG float20.i [2021-10-11 02:26:55,360 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:26:55,363 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2021-10-11 02:26:55,374 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-11 02:26:55,398 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:26:55,398 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:26:55,398 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:26:55,399 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:26:55,399 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:26:55,399 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:26:55,399 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:26:55,399 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:26:55,412 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-10-11 02:26:55,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:26:55,417 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:55,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:26:55,418 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:55,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:55,423 INFO L82 PathProgramCache]: Analyzing trace with hash 889508712, now seen corresponding path program 1 times [2021-10-11 02:26:55,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:26:55,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1538559251] [2021-10-11 02:26:55,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/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 02:26:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:55,608 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-11 02:26:55,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:55,640 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 02:26:55,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:26:55,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1538559251] [2021-10-11 02:26:55,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:55,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:26:55,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862443183] [2021-10-11 02:26:55,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 02:26:55,651 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:26:55,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 02:26:55,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 02:26:55,672 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2021-10-11 02:26:55,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:55,706 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2021-10-11 02:26:55,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 02:26:55,709 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2021-10-11 02:26:55,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:55,724 INFO L225 Difference]: With dead ends: 43 [2021-10-11 02:26:55,724 INFO L226 Difference]: Without dead ends: 19 [2021-10-11 02:26:55,728 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 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 02:26:55,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-11 02:26:55,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-10-11 02:26:55,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-11 02:26:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 18 transitions. [2021-10-11 02:26:55,768 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 18 transitions. Word has length 6 [2021-10-11 02:26:55,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:55,769 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 18 transitions. [2021-10-11 02:26:55,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 02:26:55,769 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 18 transitions. [2021-10-11 02:26:55,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-11 02:26:55,770 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:55,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-11 02:26:55,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2021-10-11 02:26:55,987 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:55,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:55,990 INFO L82 PathProgramCache]: Analyzing trace with hash 889568294, now seen corresponding path program 1 times [2021-10-11 02:26:55,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:26:55,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729643460] [2021-10-11 02:26:55,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/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 02:26:56,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:26:56,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 02:26:56,156 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:26:56,572 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-10-11 02:26:56,617 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 02:26:56,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:26:56,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729643460] [2021-10-11 02:26:56,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:26:56,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:26:56,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977244443] [2021-10-11 02:26:56,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:26:56,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:26:56,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:26:56,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:26:56,620 INFO L87 Difference]: Start difference. First operand 19 states and 18 transitions. Second operand 5 states. [2021-10-11 02:26:57,196 WARN L197 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-10-11 02:26:59,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:26:59,649 INFO L93 Difference]: Finished difference Result 19 states and 18 transitions. [2021-10-11 02:26:59,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:26:59,650 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2021-10-11 02:26:59,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:26:59,651 INFO L225 Difference]: With dead ends: 19 [2021-10-11 02:26:59,651 INFO L226 Difference]: Without dead ends: 17 [2021-10-11 02:26:59,652 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:26:59,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-10-11 02:26:59,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-10-11 02:26:59,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-10-11 02:26:59,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2021-10-11 02:26:59,656 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 6 [2021-10-11 02:26:59,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:26:59,656 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2021-10-11 02:26:59,656 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:26:59,657 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2021-10-11 02:26:59,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 02:26:59,657 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:26:59,657 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:26:59,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2021-10-11 02:26:59,870 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:26:59,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:26:59,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1928169781, now seen corresponding path program 1 times [2021-10-11 02:26:59,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:26:59,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [686460099] [2021-10-11 02:26:59,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/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 02:27:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:00,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-11 02:27:00,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:02,320 WARN L838 $PredicateComparison]: unable to prove that (and (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_bugBrokenOut_~min (_ FloatingPoint 8 24))) (and (= c_ULTIMATE.start_bugBrokenOut_~ulpdiff~1 ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_bugBrokenOut_~min) ((_ to_fp 11 53) c_currentRoundingMode ((_ to_fp 8 24) c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 8388608.0)) ((_ to_fp 11 53) c_currentRoundingMode (_ bv2 32)))))))) (fp.eq ULTIMATE.start_bugBrokenOut_~min ((_ to_fp 8 24) c_currentRoundingMode (/ 16777215.0 340282366920938463463374607431768211456.0)))))) is different from false [2021-10-11 02:27:08,407 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_bugBrokenOut_~min (_ FloatingPoint 8 24))) (and (fp.eq ULTIMATE.start_bugBrokenOut_~min ((_ to_fp 8 24) roundNearestTiesToEven (/ 16777215.0 340282366920938463463374607431768211456.0))) (not (fp.eq ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven ULTIMATE.start_bugBrokenOut_~min) ((_ to_fp 11 53) roundNearestTiesToEven ((_ to_fp 8 24) roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 8388608.0)) ((_ to_fp 11 53) roundNearestTiesToEven (_ bv2 32))))))) ((_ to_fp 8 24) roundNearestTiesToEven (/ 1.0 85070591730234615865843651857942052864.0)))))) is different from false [2021-10-11 02:27:09,273 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 02:27:09,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:09,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [686460099] [2021-10-11 02:27:09,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:09,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:09,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726454408] [2021-10-11 02:27:09,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 02:27:09,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:09,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 02:27:09,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=8, Unknown=2, NotChecked=10, Total=30 [2021-10-11 02:27:09,276 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand 6 states. [2021-10-11 02:27:11,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:11,876 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2021-10-11 02:27:11,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:27:11,877 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-10-11 02:27:11,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:11,878 INFO L225 Difference]: With dead ends: 17 [2021-10-11 02:27:11,878 INFO L226 Difference]: Without dead ends: 15 [2021-10-11 02:27:11,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=10, Invalid=8, Unknown=2, NotChecked=10, Total=30 [2021-10-11 02:27:11,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-11 02:27:11,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-11 02:27:11,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-10-11 02:27:11,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-10-11 02:27:11,880 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 10 [2021-10-11 02:27:11,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:11,881 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-10-11 02:27:11,881 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 02:27:11,881 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-10-11 02:27:11,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 02:27:11,882 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:27:11,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:27:12,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2021-10-11 02:27:12,090 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:27:12,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:27:12,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1162826544, now seen corresponding path program 1 times [2021-10-11 02:27:12,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-11 02:27:12,092 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [771258120] [2021-10-11 02:27:12,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/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 02:27:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:27:12,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-11 02:27:12,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:27:13,305 WARN L197 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-10-11 02:27:13,346 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 02:27:13,347 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-10-11 02:27:13,347 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [771258120] [2021-10-11 02:27:13,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:27:13,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:27:13,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858947387] [2021-10-11 02:27:13,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 02:27:13,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-11 02:27:13,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 02:27:13,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 02:27:13,354 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 5 states. [2021-10-11 02:27:17,065 WARN L197 SmtUtils]: Spent 646.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2021-10-11 02:27:17,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:27:17,066 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-10-11 02:27:17,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 02:27:17,066 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2021-10-11 02:27:17,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:27:17,067 INFO L225 Difference]: With dead ends: 15 [2021-10-11 02:27:17,067 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:27:17,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:27:17,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:27:17,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:27:17,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:27:17,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:27:17,068 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-10-11 02:27:17,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:27:17,069 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:27:17,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 02:27:17,069 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:27:17,069 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:27:17,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2021-10-11 02:27:17,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:27:17,540 WARN L197 SmtUtils]: Spent 227.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2021-10-11 02:27:17,550 INFO L262 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2021-10-11 02:27:17,551 INFO L262 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2021-10-11 02:27:17,551 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 32) no Hoare annotation was computed. [2021-10-11 02:27:17,551 INFO L262 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2021-10-11 02:27:17,551 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-11 02:27:17,551 INFO L262 CegarLoopResult]: For program point L32-1(line 32) no Hoare annotation was computed. [2021-10-11 02:27:17,551 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:27:17,551 INFO L258 CegarLoopResult]: At program point L32-3(lines 26 35) the Hoare annotation is: (= currentRoundingMode roundNearestTiesToEven) [2021-10-11 02:27:17,551 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-11 02:27:17,552 INFO L265 CegarLoopResult]: At program point L57(lines 47 58) the Hoare annotation is: true [2021-10-11 02:27:17,552 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2021-10-11 02:27:17,552 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:27:17,552 INFO L262 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2021-10-11 02:27:17,552 INFO L262 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2021-10-11 02:27:17,552 INFO L258 CegarLoopResult]: At program point L21-3(lines 16 24) the Hoare annotation is: (and (fp.eq ULTIMATE.start_bug_~min ((_ to_fp 8 24) currentRoundingMode (/ 16777215.0 340282366920938463463374607431768211456.0))) (= currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_bug_~min (_ FloatingPoint 8 24))) (and (fp.eq ULTIMATE.start_bug_~min ((_ to_fp 8 24) currentRoundingMode (/ 16777215.0 340282366920938463463374607431768211456.0))) (= ULTIMATE.start_bug_~ulpdiff~0 (fp.mul currentRoundingMode ULTIMATE.start_bug_~min ((_ to_fp 8 24) currentRoundingMode (fp.mul currentRoundingMode ((_ to_fp 11 53) currentRoundingMode (/ 1.0 8388608.0)) ((_ to_fp 11 53) currentRoundingMode (_ bv2 32))))))))) [2021-10-11 02:27:17,552 INFO L262 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2021-10-11 02:27:17,552 INFO L262 CegarLoopResult]: For program point L17-2(line 17) no Hoare annotation was computed. [2021-10-11 02:27:17,552 INFO L262 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2021-10-11 02:27:17,553 INFO L262 CegarLoopResult]: For program point L42-1(line 42) no Hoare annotation was computed. [2021-10-11 02:27:17,553 INFO L265 CegarLoopResult]: At program point L42-3(lines 37 45) the Hoare annotation is: true [2021-10-11 02:27:17,553 INFO L262 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2021-10-11 02:27:17,553 INFO L262 CegarLoopResult]: For program point L38-2(line 38) no Hoare annotation was computed. [2021-10-11 02:27:17,553 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2021-10-11 02:27:17,563 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:17,564 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-11 02:27:17,565 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-11 02:27:17,568 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:17,568 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-11 02:27:17,568 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-11 02:27:17,570 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:17,570 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:17,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:27:17 BoogieIcfgContainer [2021-10-11 02:27:17,577 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:27:17,577 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:27:17,578 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:27:17,578 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:27:17,578 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:26:55" (3/4) ... [2021-10-11 02:27:17,581 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:27:17,591 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:27:17,591 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-11 02:27:17,592 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:17,592 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:27:17,618 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (~fp.eq~DOUBLE(min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists ULTIMATE.start_bug_~min : C_FLOAT :: ~fp.eq~DOUBLE(ULTIMATE.start_bug_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456)) && ulpdiff == ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ULTIMATE.start_bug_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1/8388608), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2bv32))))) [2021-10-11 02:27:17,643 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ebd5c7ec-cb6e-42e2-a4cb-6c93e6f46fc6/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:27:17,650 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:27:17,654 INFO L168 Benchmark]: Toolchain (without parser) took 25827.53 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 39.0 MB in the beginning and 52.8 MB in the end (delta: -13.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:17,656 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 41.2 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:17,656 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.82 ms. Allocated memory is still 60.8 MB. Free memory was 38.8 MB in the beginning and 42.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:17,657 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.11 ms. Allocated memory is still 60.8 MB. Free memory was 42.3 MB in the beginning and 40.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:17,657 INFO L168 Benchmark]: Boogie Preprocessor took 27.15 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 39.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:27:17,658 INFO L168 Benchmark]: RCFGBuilder took 3050.49 ms. Allocated memory is still 60.8 MB. Free memory was 39.5 MB in the beginning and 41.6 MB in the end (delta: -2.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:17,662 INFO L168 Benchmark]: TraceAbstraction took 22237.48 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.2 MB in the beginning and 55.5 MB in the end (delta: -14.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:17,663 INFO L168 Benchmark]: Witness Printer took 72.52 ms. Allocated memory is still 73.4 MB. Free memory was 55.5 MB in the beginning and 52.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:27:17,665 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 60.8 MB. Free memory was 41.3 MB in the beginning and 41.2 MB in the end (delta: 42.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 394.82 ms. Allocated memory is still 60.8 MB. Free memory was 38.8 MB in the beginning and 42.5 MB in the end (delta: -3.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.11 ms. Allocated memory is still 60.8 MB. Free memory was 42.3 MB in the beginning and 40.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 27.15 ms. Allocated memory is still 60.8 MB. Free memory was 40.9 MB in the beginning and 39.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 3050.49 ms. Allocated memory is still 60.8 MB. Free memory was 39.5 MB in the beginning and 41.6 MB in the end (delta: -2.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22237.48 ms. Allocated memory was 60.8 MB in the beginning and 73.4 MB in the end (delta: 12.6 MB). Free memory was 41.2 MB in the beginning and 55.5 MB in the end (delta: -14.3 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. * Witness Printer took 72.52 ms. Allocated memory is still 73.4 MB. Free memory was 55.5 MB in the beginning and 52.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] - 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: 32]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 21]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 42]: 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 3 specifications checked. All of them hold - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 16]: Loop Invariant [2021-10-11 02:27:17,674 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:17,674 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-11 02:27:17,675 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-11 02:27:17,675 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:17,676 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] [2021-10-11 02:27:17,676 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_bug_~min,QUANTIFIED] Derived loop invariant: (~fp.eq~DOUBLE(min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456)) && unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven) && (\exists ULTIMATE.start_bug_~min : C_FLOAT :: ~fp.eq~DOUBLE(ULTIMATE.start_bug_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 16777215/340282366920938463463374607431768211456)) && ulpdiff == ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ULTIMATE.start_bug_~min, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, ~fp.mul~FLOAT(unknown-currentRoundingMode-unknown, ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 1/8388608), ~to_fp~LONGDOUBLE(unknown-currentRoundingMode-unknown, 2bv32))))) - InvariantResult [Line: 26]: Loop Invariant [2021-10-11 02:27:17,677 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven [2021-10-11 02:27:17,677 WARN L417 cessorBacktranslator]: Unfinished backtranslation: Declaration ConstDeclaration not handled for expression ~roundNearestTiesToEven Derived loop invariant: unknown-currentRoundingMode-unknown == ~roundNearestTiesToEven - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 23 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.8s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 9.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 12 SDslu, 21 SDs, 0 SdLazy, 53 SolverSat, 0 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 8.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 8 NumberOfFragments, 36 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 4 QuantifiedInterpolants, 1773 SizeOfPredicates, 12 NumberOfNonLiveVariables, 126 ConjunctsInSsa, 16 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...