./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cbmc-regression/float13.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float13.c -s /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan --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 703e967d9c23f7e5c0b77f9cc7b797efc09a7a47 .............................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cbmc-regression/float13.c -s /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan --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 703e967d9c23f7e5c0b77f9cc7b797efc09a7a47 ..................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 12:54:16,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:54:16,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:54:16,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:54:16,829 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:54:16,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:54:16,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:54:16,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:54:16,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:54:16,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:54:16,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:54:16,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:54:16,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:54:16,846 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:54:16,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:54:16,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:54:16,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:54:16,849 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:54:16,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:54:16,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:54:16,854 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:54:16,855 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:54:16,856 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:54:16,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:54:16,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:54:16,859 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:54:16,860 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:54:16,860 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:54:16,861 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:54:16,862 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:54:16,862 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:54:16,863 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:54:16,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:54:16,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:54:16,865 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:54:16,865 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:54:16,866 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:54:16,866 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:54:16,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:54:16,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:54:16,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:54:16,868 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 12:54:16,885 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:54:16,885 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:54:16,886 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:54:16,886 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:54:16,886 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:54:16,886 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:54:16,886 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 12:54:16,886 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:54:16,887 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:54:16,887 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 12:54:16,887 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 12:54:16,887 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:54:16,887 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 12:54:16,887 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 12:54:16,887 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 12:54:16,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:54:16,888 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:54:16,888 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 12:54:16,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:54:16,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:54:16,888 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:54:16,888 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:54:16,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:54:16,889 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:54:16,889 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:54:16,889 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:54:16,889 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:54:16,889 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:54:16,889 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:54:16,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:54:16,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:54:16,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:54:16,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:54:16,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:54:16,890 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 12:54:16,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 12:54:16,890 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:54:16,890 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:54:16,890 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:54:16,891 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-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 703e967d9c23f7e5c0b77f9cc7b797efc09a7a47 [2020-12-09 12:54:17,086 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:54:17,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:54:17,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:54:17,109 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:54:17,109 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:54:17,110 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float13.c [2020-12-09 12:54:17,153 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/data/439cf8c3d/7d9a9d19275a4cdcb24090bf78ebaaf7/FLAG3963d929a [2020-12-09 12:54:17,503 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:54:17,504 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c [2020-12-09 12:54:17,508 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/data/439cf8c3d/7d9a9d19275a4cdcb24090bf78ebaaf7/FLAG3963d929a [2020-12-09 12:54:17,517 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/data/439cf8c3d/7d9a9d19275a4cdcb24090bf78ebaaf7 [2020-12-09 12:54:17,519 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:54:17,520 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:54:17,521 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:54:17,521 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:54:17,524 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:54:17,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:54:17" (1/1) ... [2020-12-09 12:54:17,525 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c043125 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:17, skipping insertion in model container [2020-12-09 12:54:17,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:54:17" (1/1) ... [2020-12-09 12:54:17,531 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:54:17,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:54:17,650 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[497,510] [2020-12-09 12:54:17,654 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[569,582] [2020-12-09 12:54:17,655 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[631,644] [2020-12-09 12:54:17,656 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[693,706] [2020-12-09 12:54:17,657 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[764,777] [2020-12-09 12:54:17,658 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[836,849] [2020-12-09 12:54:17,659 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[895,908] [2020-12-09 12:54:17,661 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[954,967] [2020-12-09 12:54:17,663 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:54:17,672 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:54:17,685 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[497,510] [2020-12-09 12:54:17,686 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[569,582] [2020-12-09 12:54:17,687 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[631,644] [2020-12-09 12:54:17,688 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[693,706] [2020-12-09 12:54:17,689 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[764,777] [2020-12-09 12:54:17,690 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[836,849] [2020-12-09 12:54:17,692 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[895,908] [2020-12-09 12:54:17,693 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[954,967] [2020-12-09 12:54:17,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:54:17,707 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:54:17,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:17 WrapperNode [2020-12-09 12:54:17,708 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:54:17,709 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:54:17,709 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:54:17,710 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:54:17,716 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:17" (1/1) ... [2020-12-09 12:54:17,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:17" (1/1) ... [2020-12-09 12:54:17,734 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:54:17,735 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:54:17,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:54:17,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:54:17,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:17" (1/1) ... [2020-12-09 12:54:17,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:17" (1/1) ... [2020-12-09 12:54:17,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:17" (1/1) ... [2020-12-09 12:54:17,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:17" (1/1) ... [2020-12-09 12:54:17,748 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:17" (1/1) ... [2020-12-09 12:54:17,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:17" (1/1) ... [2020-12-09 12:54:17,752 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:17" (1/1) ... [2020-12-09 12:54:17,753 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:54:17,754 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:54:17,754 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:54:17,754 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:54:17,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/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 [2020-12-09 12:54:17,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:54:17,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:54:17,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 12:54:17,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:54:17,978 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:54:17,978 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 12:54:17,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:54:17 BoogieIcfgContainer [2020-12-09 12:54:17,979 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:54:17,981 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:54:17,981 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:54:17,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:54:17,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:54:17" (1/3) ... [2020-12-09 12:54:17,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bf651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:54:17, skipping insertion in model container [2020-12-09 12:54:17,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:17" (2/3) ... [2020-12-09 12:54:17,984 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bf651 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:54:17, skipping insertion in model container [2020-12-09 12:54:17,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:54:17" (3/3) ... [2020-12-09 12:54:17,985 INFO L111 eAbstractionObserver]: Analyzing ICFG float13.c [2020-12-09 12:54:17,996 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:54:17,998 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-09 12:54:18,006 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-09 12:54:18,025 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:54:18,025 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:54:18,025 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:54:18,025 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:54:18,025 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:54:18,025 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:54:18,025 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:54:18,025 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:54:18,036 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-12-09 12:54:18,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 12:54:18,040 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:54:18,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 12:54:18,041 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:54:18,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:54:18,046 INFO L82 PathProgramCache]: Analyzing trace with hash 104910, now seen corresponding path program 1 times [2020-12-09 12:54:18,053 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 12:54:18,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398159567] [2020-12-09 12:54:18,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 12:54:18,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:54:18,139 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:54:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 12:54:18,154 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 12:54:18,169 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 12:54:18,170 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 12:54:18,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 12:54:18,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:54:18 BoogieIcfgContainer [2020-12-09 12:54:18,185 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:54:18,186 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:54:18,186 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:54:18,186 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:54:18,187 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:54:17" (3/4) ... [2020-12-09 12:54:18,189 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 12:54:18,189 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:54:18,191 INFO L168 Benchmark]: Toolchain (without parser) took 669.90 ms. Allocated memory is still 117.4 MB. Free memory was 81.1 MB in the beginning and 61.3 MB in the end (delta: 19.8 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:54:18,191 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 117.4 MB. Free memory is still 97.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:54:18,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.09 ms. Allocated memory is still 117.4 MB. Free memory was 80.9 MB in the beginning and 93.3 MB in the end (delta: -12.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 12:54:18,193 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.53 ms. Allocated memory is still 117.4 MB. Free memory was 93.3 MB in the beginning and 91.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:54:18,193 INFO L168 Benchmark]: Boogie Preprocessor took 18.16 ms. Allocated memory is still 117.4 MB. Free memory was 91.7 MB in the beginning and 90.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:54:18,194 INFO L168 Benchmark]: RCFGBuilder took 225.35 ms. Allocated memory is still 117.4 MB. Free memory was 90.7 MB in the beginning and 74.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 12:54:18,195 INFO L168 Benchmark]: TraceAbstraction took 204.81 ms. Allocated memory is still 117.4 MB. Free memory was 74.4 MB in the beginning and 61.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:54:18,195 INFO L168 Benchmark]: Witness Printer took 3.47 ms. Allocated memory is still 117.4 MB. Free memory was 61.9 MB in the beginning and 61.3 MB in the end (delta: 550.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:54:18,198 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 117.4 MB. Free memory is still 97.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 187.09 ms. Allocated memory is still 117.4 MB. Free memory was 80.9 MB in the beginning and 93.3 MB in the end (delta: -12.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.53 ms. Allocated memory is still 117.4 MB. Free memory was 93.3 MB in the beginning and 91.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.16 ms. Allocated memory is still 117.4 MB. Free memory was 91.7 MB in the beginning and 90.7 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 225.35 ms. Allocated memory is still 117.4 MB. Free memory was 90.7 MB in the beginning and 74.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 204.81 ms. Allocated memory is still 117.4 MB. Free memory was 74.4 MB in the beginning and 61.9 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.47 ms. Allocated memory is still 117.4 MB. Free memory was 61.9 MB in the beginning and 61.3 MB in the end (delta: 550.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: 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 14, overapproximation of someBinaryArithmeticFLOAToperation at line 5. Possible FailurePath: [L5] const float plus_infinity = 1.0f/0.0f; [L6] const float minus_infinity = 0.0f/-0.0f; [L7] const float NaN = 0.0f * (1.0f/0.0f); [L11] _Bool temp; [L14] temp = NaN < plus_infinity [L15] COND TRUE !(!temp) [L15] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.1s, 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=34occurred 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 [2020-12-09 12:54:19,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 12:54:19,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 12:54:19,827 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 12:54:19,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 12:54:19,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 12:54:19,830 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 12:54:19,832 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 12:54:19,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 12:54:19,834 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 12:54:19,835 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 12:54:19,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 12:54:19,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 12:54:19,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 12:54:19,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 12:54:19,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 12:54:19,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 12:54:19,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 12:54:19,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 12:54:19,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 12:54:19,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 12:54:19,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 12:54:19,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 12:54:19,862 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 12:54:19,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 12:54:19,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 12:54:19,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 12:54:19,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 12:54:19,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 12:54:19,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 12:54:19,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 12:54:19,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 12:54:19,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 12:54:19,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 12:54:19,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 12:54:19,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 12:54:19,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 12:54:19,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 12:54:19,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 12:54:19,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 12:54:19,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 12:54:19,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 12:54:19,902 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 12:54:19,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 12:54:19,903 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 12:54:19,903 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 12:54:19,903 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 12:54:19,904 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 12:54:19,904 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 12:54:19,904 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 12:54:19,904 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 12:54:19,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 12:54:19,905 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 12:54:19,905 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 12:54:19,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 12:54:19,906 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 12:54:19,906 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 12:54:19,906 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 12:54:19,906 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 12:54:19,906 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 12:54:19,907 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 12:54:19,907 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 12:54:19,907 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 12:54:19,907 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 12:54:19,907 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 12:54:19,908 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 12:54:19,908 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 12:54:19,908 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 12:54:19,908 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 12:54:19,908 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 12:54:19,909 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 12:54:19,909 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 12:54:19,909 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 12:54:19,909 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 12:54:19,909 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 12:54:19,910 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 12:54:19,910 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 12:54:19,910 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-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 703e967d9c23f7e5c0b77f9cc7b797efc09a7a47 [2020-12-09 12:54:20,147 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 12:54:20,162 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 12:54:20,164 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 12:54:20,164 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 12:54:20,165 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 12:54:20,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/../../sv-benchmarks/c/floats-cbmc-regression/float13.c [2020-12-09 12:54:20,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/data/44640d27f/dd14f99525f84701896d9be088d61b7c/FLAGfbf894bc1 [2020-12-09 12:54:20,586 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 12:54:20,587 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c [2020-12-09 12:54:20,592 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/data/44640d27f/dd14f99525f84701896d9be088d61b7c/FLAGfbf894bc1 [2020-12-09 12:54:20,602 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/data/44640d27f/dd14f99525f84701896d9be088d61b7c [2020-12-09 12:54:20,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 12:54:20,605 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 12:54:20,607 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 12:54:20,607 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 12:54:20,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 12:54:20,613 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:54:20" (1/1) ... [2020-12-09 12:54:20,615 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8dcf87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:20, skipping insertion in model container [2020-12-09 12:54:20,615 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 12:54:20" (1/1) ... [2020-12-09 12:54:20,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 12:54:20,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 12:54:20,741 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[497,510] [2020-12-09 12:54:20,745 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[569,582] [2020-12-09 12:54:20,746 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[631,644] [2020-12-09 12:54:20,747 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[693,706] [2020-12-09 12:54:20,748 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[764,777] [2020-12-09 12:54:20,749 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[836,849] [2020-12-09 12:54:20,751 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[895,908] [2020-12-09 12:54:20,752 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[954,967] [2020-12-09 12:54:20,753 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:54:20,764 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 12:54:20,774 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[497,510] [2020-12-09 12:54:20,775 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[569,582] [2020-12-09 12:54:20,775 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[631,644] [2020-12-09 12:54:20,776 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[693,706] [2020-12-09 12:54:20,777 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[764,777] [2020-12-09 12:54:20,778 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[836,849] [2020-12-09 12:54:20,778 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[895,908] [2020-12-09 12:54:20,779 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/sv-benchmarks/c/floats-cbmc-regression/float13.c[954,967] [2020-12-09 12:54:20,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 12:54:20,790 INFO L208 MainTranslator]: Completed translation [2020-12-09 12:54:20,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:20 WrapperNode [2020-12-09 12:54:20,791 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 12:54:20,792 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 12:54:20,792 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 12:54:20,792 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 12:54:20,797 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:20" (1/1) ... [2020-12-09 12:54:20,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:20" (1/1) ... [2020-12-09 12:54:20,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 12:54:20,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 12:54:20,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 12:54:20,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 12:54:20,835 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:20" (1/1) ... [2020-12-09 12:54:20,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:20" (1/1) ... [2020-12-09 12:54:20,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:20" (1/1) ... [2020-12-09 12:54:20,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:20" (1/1) ... [2020-12-09 12:54:20,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:20" (1/1) ... [2020-12-09 12:54:20,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:20" (1/1) ... [2020-12-09 12:54:20,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:20" (1/1) ... [2020-12-09 12:54:20,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 12:54:20,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 12:54:20,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 12:54:20,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 12:54:20,848 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/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 [2020-12-09 12:54:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 12:54:20,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 12:54:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 12:54:20,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 12:54:21,068 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 12:54:21,068 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-09 12:54:21,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:54:21 BoogieIcfgContainer [2020-12-09 12:54:21,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 12:54:21,075 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 12:54:21,075 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 12:54:21,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 12:54:21,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 12:54:20" (1/3) ... [2020-12-09 12:54:21,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575beb13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:54:21, skipping insertion in model container [2020-12-09 12:54:21,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 12:54:20" (2/3) ... [2020-12-09 12:54:21,078 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@575beb13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 12:54:21, skipping insertion in model container [2020-12-09 12:54:21,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:54:21" (3/3) ... [2020-12-09 12:54:21,079 INFO L111 eAbstractionObserver]: Analyzing ICFG float13.c [2020-12-09 12:54:21,089 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 12:54:21,091 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 8 error locations. [2020-12-09 12:54:21,098 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-12-09 12:54:21,115 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 12:54:21,115 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 12:54:21,115 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 12:54:21,115 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 12:54:21,115 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 12:54:21,115 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 12:54:21,115 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 12:54:21,116 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 12:54:21,125 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-12-09 12:54:21,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 12:54:21,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 12:54:21,129 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 12:54:21,129 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 12:54:21,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 12:54:21,133 INFO L82 PathProgramCache]: Analyzing trace with hash 925604, now seen corresponding path program 1 times [2020-12-09 12:54:21,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 12:54:21,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1941313764] [2020-12-09 12:54:21,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/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 [2020-12-09 12:54:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 12:54:21,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 12:54:21,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 12:54:21,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 12:54:21,286 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 12:54:21,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1941313764] [2020-12-09 12:54:21,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 12:54:21,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 12:54:21,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762914896] [2020-12-09 12:54:21,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 12:54:21,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 12:54:21,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 12:54:21,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 12:54:21,302 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2020-12-09 12:54:21,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 12:54:21,447 INFO L93 Difference]: Finished difference Result 55 states and 68 transitions. [2020-12-09 12:54:21,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 12:54:21,449 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2020-12-09 12:54:21,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 12:54:21,453 INFO L225 Difference]: With dead ends: 55 [2020-12-09 12:54:21,454 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 12:54:21,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 12:54:21,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 12:54:21,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 12:54:21,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 12:54:21,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 12:54:21,472 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 4 [2020-12-09 12:54:21,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 12:54:21,472 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 12:54:21,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 12:54:21,473 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 12:54:21,473 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 12:54:21,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 12:54:21,675 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 12:54:21,717 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2020-12-09 12:54:21,717 INFO L262 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-12-09 12:54:21,717 INFO L262 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-12-09 12:54:21,717 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2020-12-09 12:54:21,717 INFO L262 CegarLoopResult]: For program point L27-3(line 27) no Hoare annotation was computed. [2020-12-09 12:54:21,718 INFO L262 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-12-09 12:54:21,718 INFO L262 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-12-09 12:54:21,718 INFO L262 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-12-09 12:54:21,718 INFO L262 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-12-09 12:54:21,718 INFO L262 CegarLoopResult]: For program point L36-1(line 36) no Hoare annotation was computed. [2020-12-09 12:54:21,718 INFO L262 CegarLoopResult]: For program point L36-3(line 36) no Hoare annotation was computed. [2020-12-09 12:54:21,718 INFO L262 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-09 12:54:21,718 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 27) no Hoare annotation was computed. [2020-12-09 12:54:21,718 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 12:54:21,718 INFO L262 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-09 12:54:21,718 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-12-09 12:54:21,718 INFO L262 CegarLoopResult]: For program point L24(line 24) no Hoare annotation was computed. [2020-12-09 12:54:21,718 INFO L262 CegarLoopResult]: For program point L24-1(line 24) no Hoare annotation was computed. [2020-12-09 12:54:21,718 INFO L262 CegarLoopResult]: For program point L24-3(line 24) no Hoare annotation was computed. [2020-12-09 12:54:21,719 INFO L262 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-12-09 12:54:21,719 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 12:54:21,719 INFO L262 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-12-09 12:54:21,719 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-12-09 12:54:21,719 INFO L262 CegarLoopResult]: For program point L33-3(line 33) no Hoare annotation was computed. [2020-12-09 12:54:21,719 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 24) no Hoare annotation was computed. [2020-12-09 12:54:21,719 INFO L262 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-12-09 12:54:21,719 INFO L262 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-12-09 12:54:21,719 INFO L262 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-12-09 12:54:21,719 INFO L258 CegarLoopResult]: At program point L38(lines 9 39) the Hoare annotation is: (and (= (_ bv0 8) ULTIMATE.start_main_~temp~0) (exists ((currentRoundingMode RoundingMode)) (= ~NaN~0 (fp.mul currentRoundingMode (_ +zero 8 24) (fp.div currentRoundingMode ((_ to_fp 8 24) currentRoundingMode 1.0) (_ +zero 8 24)))))) [2020-12-09 12:54:21,720 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 33) no Hoare annotation was computed. [2020-12-09 12:54:21,720 INFO L262 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-12-09 12:54:21,720 INFO L262 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-12-09 12:54:21,720 INFO L262 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-12-09 12:54:21,720 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2020-12-09 12:54:21,720 INFO L262 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-12-09 12:54:21,720 INFO L262 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-12-09 12:54:21,720 INFO L262 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-12-09 12:54:21,725 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:54:21,726 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:54:21,726 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:54:21,730 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:54:21,730 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:54:21,731 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:54:21,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 12:54:21 BoogieIcfgContainer [2020-12-09 12:54:21,732 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 12:54:21,733 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 12:54:21,733 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 12:54:21,733 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 12:54:21,734 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 12:54:21" (3/4) ... [2020-12-09 12:54:21,736 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 12:54:21,743 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 12:54:21,743 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-12-09 12:54:21,744 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 12:54:21,744 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 12:54:21,761 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: 0bv8 == temp && (\exists currentRoundingMode : FloatRoundingMode :: NaN == ~fp.mul~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~fp.div~FLOAT(currentRoundingMode, ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0), ~Pluszero~LONGDOUBLE()))) [2020-12-09 12:54:21,773 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_714bc1b6-ed94-4d57-aab2-d1b771f45d75/bin/utaipan/witness.graphml [2020-12-09 12:54:21,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 12:54:21,775 INFO L168 Benchmark]: Toolchain (without parser) took 1168.80 ms. Allocated memory was 46.1 MB in the beginning and 62.9 MB in the end (delta: 16.8 MB). Free memory was 23.1 MB in the beginning and 30.6 MB in the end (delta: -7.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:54:21,775 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 29.6 MB in the end (delta: 60.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:54:21,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 184.52 ms. Allocated memory was 46.1 MB in the beginning and 62.9 MB in the end (delta: 16.8 MB). Free memory was 22.9 MB in the beginning and 37.8 MB in the end (delta: -14.9 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. [2020-12-09 12:54:21,776 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.25 ms. Allocated memory is still 62.9 MB. Free memory was 37.6 MB in the beginning and 47.0 MB in the end (delta: -9.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:54:21,776 INFO L168 Benchmark]: Boogie Preprocessor took 17.80 ms. Allocated memory is still 62.9 MB. Free memory was 47.0 MB in the beginning and 45.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 12:54:21,777 INFO L168 Benchmark]: RCFGBuilder took 221.94 ms. Allocated memory is still 62.9 MB. Free memory was 45.9 MB in the beginning and 31.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-12-09 12:54:21,777 INFO L168 Benchmark]: TraceAbstraction took 657.67 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 33.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. [2020-12-09 12:54:21,778 INFO L168 Benchmark]: Witness Printer took 40.53 ms. Allocated memory is still 62.9 MB. Free memory was 33.3 MB in the beginning and 30.6 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 12:54:21,780 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 46.1 MB. Free memory was 29.6 MB in the beginning and 29.6 MB in the end (delta: 60.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 184.52 ms. Allocated memory was 46.1 MB in the beginning and 62.9 MB in the end (delta: 16.8 MB). Free memory was 22.9 MB in the beginning and 37.8 MB in the end (delta: -14.9 MB). Peak memory consumption was 3.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 37.25 ms. Allocated memory is still 62.9 MB. Free memory was 37.6 MB in the beginning and 47.0 MB in the end (delta: -9.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.80 ms. Allocated memory is still 62.9 MB. Free memory was 47.0 MB in the beginning and 45.9 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 221.94 ms. Allocated memory is still 62.9 MB. Free memory was 45.9 MB in the beginning and 31.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 657.67 ms. Allocated memory is still 62.9 MB. Free memory was 46.2 MB in the beginning and 33.3 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.2 MB. Max. memory is 16.1 GB. * Witness Printer took 40.53 ms. Allocated memory is still 62.9 MB. Free memory was 33.3 MB in the beginning and 30.6 MB in the end (delta: 2.8 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 Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 27]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 36]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 30]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 33]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 24]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 15]: 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 - AllSpecificationsHoldResult: All specifications hold 8 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant [2020-12-09 12:54:21,785 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:54:21,785 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:54:21,785 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:54:21,786 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:54:21,786 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] [2020-12-09 12:54:21,786 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[currentRoundingMode,QUANTIFIED] Derived loop invariant: 0bv8 == temp && (\exists currentRoundingMode : FloatRoundingMode :: NaN == ~fp.mul~FLOAT(currentRoundingMode, ~Pluszero~LONGDOUBLE(), ~fp.div~FLOAT(currentRoundingMode, ~to_fp~LONGDOUBLE(currentRoundingMode, 1.0), ~Pluszero~LONGDOUBLE()))) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 8 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4 SDtfs, 23 SDslu, 1 SDs, 0 SdLazy, 16 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 1 LocationsWithAnnotation, 1 PreInvPairs, 2 NumberOfFragments, 16 HoareAnnotationTreeSize, 1 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 1 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 3 ConstructedInterpolants, 1 QuantifiedInterpolants, 48 SizeOfPredicates, 3 NumberOfNonLiveVariables, 28 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...