./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG --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 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e ................................................................................................................................................................................................................................................................................ 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_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_poly2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG --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 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e ...................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:47:22,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:47:22,805 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:47:22,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:47:22,891 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:47:22,893 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:47:22,897 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:47:22,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:47:22,907 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:47:22,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:47:22,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:47:22,934 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:47:22,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:47:22,937 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:47:22,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:47:22,942 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:47:22,943 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:47:22,945 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:47:22,947 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:47:22,950 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:47:22,953 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:47:22,955 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:47:22,957 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:47:22,958 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:47:22,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:47:22,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:47:22,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:47:22,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:47:22,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:47:22,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:47:22,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:47:22,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:47:22,971 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:47:22,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:47:22,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:47:22,975 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:47:22,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:47:22,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:47:22,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:47:22,979 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:47:22,980 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:47:22,982 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:47:23,018 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:47:23,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:47:23,020 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:47:23,021 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:47:23,021 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:47:23,022 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:47:23,022 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:47:23,023 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:47:23,023 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:47:23,024 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:47:23,024 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:47:23,025 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:47:23,025 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:47:23,026 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:47:23,026 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:47:23,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:47:23,028 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:47:23,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:47:23,029 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:47:23,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:47:23,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:47:23,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:47:23,031 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:47:23,031 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:47:23,032 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:47:23,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:47:23,033 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:47:23,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:47:23,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:47:23,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:47:23,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:47:23,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:47:23,035 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:47:23,035 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:47:23,035 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:47:23,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:47:23,036 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:47:23,036 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:47:23,036 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:47:23,037 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_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e [2021-10-29 05:47:23,338 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:47:23,384 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:47:23,388 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:47:23,390 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:47:23,391 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:47:23,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-10-29 05:47:23,469 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/data/71e2fad95/bc68755a64444029a546823de6500a67/FLAG935bffd65 [2021-10-29 05:47:24,071 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:47:24,076 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-10-29 05:47:24,089 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/data/71e2fad95/bc68755a64444029a546823de6500a67/FLAG935bffd65 [2021-10-29 05:47:24,393 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/data/71e2fad95/bc68755a64444029a546823de6500a67 [2021-10-29 05:47:24,396 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:47:24,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:47:24,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:47:24,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:47:24,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:47:24,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:47:24" (1/1) ... [2021-10-29 05:47:24,410 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10fd400c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:24, skipping insertion in model container [2021-10-29 05:47:24,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:47:24" (1/1) ... [2021-10-29 05:47:24,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:47:24,448 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:47:24,674 WARN L228 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_f5dae870-29af-4291-a4b8-edd47aed8237/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-10-29 05:47:24,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:47:24,710 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:47:24,728 WARN L228 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_f5dae870-29af-4291-a4b8-edd47aed8237/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-10-29 05:47:24,744 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:47:24,762 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:47:24,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:24 WrapperNode [2021-10-29 05:47:24,763 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:47:24,764 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:47:24,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:47:24,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:47:24,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:24" (1/1) ... [2021-10-29 05:47:24,784 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:24" (1/1) ... [2021-10-29 05:47:24,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:47:24,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:47:24,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:47:24,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:47:24,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:24" (1/1) ... [2021-10-29 05:47:24,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:24" (1/1) ... [2021-10-29 05:47:24,826 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:24" (1/1) ... [2021-10-29 05:47:24,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:24" (1/1) ... [2021-10-29 05:47:24,835 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:24" (1/1) ... [2021-10-29 05:47:24,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:24" (1/1) ... [2021-10-29 05:47:24,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:24" (1/1) ... [2021-10-29 05:47:24,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:47:24,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:47:24,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:47:24,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:47:24,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:24" (1/1) ... [2021-10-29 05:47:24,864 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:47:24,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:47:24,900 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:47:24,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:47:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:47:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:47:24,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-10-29 05:47:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-29 05:47:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-10-29 05:47:24,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:47:24,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:47:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-29 05:47:24,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:47:25,661 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:47:25,661 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 05:47:25,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:47:25 BoogieIcfgContainer [2021-10-29 05:47:25,664 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:47:25,667 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:47:25,667 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:47:25,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:47:25,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:47:24" (1/3) ... [2021-10-29 05:47:25,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f7c272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:47:25, skipping insertion in model container [2021-10-29 05:47:25,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:24" (2/3) ... [2021-10-29 05:47:25,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f7c272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:47:25, skipping insertion in model container [2021-10-29 05:47:25,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:47:25" (3/3) ... [2021-10-29 05:47:25,685 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2021-10-29 05:47:25,694 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:47:25,694 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:47:25,747 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:47:25,754 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:47:25,755 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:47:25,768 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:47:25,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:47:25,774 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:47:25,775 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:47:25,776 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:47:25,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:47:25,783 INFO L85 PathProgramCache]: Analyzing trace with hash 70827, now seen corresponding path program 1 times [2021-10-29 05:47:25,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:47:25,796 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011396714] [2021-10-29 05:47:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:47:25,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:47:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:47:25,962 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:47:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:47:26,064 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:47:26,067 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:47:26,069 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:26,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:47:26,079 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:47:26,083 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:47:26,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:47:26 BoogieIcfgContainer [2021-10-29 05:47:26,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:47:26,128 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:47:26,129 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:47:26,132 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:47:26,133 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:47:25" (3/4) ... [2021-10-29 05:47:26,138 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:47:26,139 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:47:26,142 INFO L168 Benchmark]: Toolchain (without parser) took 1742.36 ms. Allocated memory is still 121.6 MB. Free memory was 83.9 MB in the beginning and 56.3 MB in the end (delta: 27.6 MB). Peak memory consumption was 24.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:26,143 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 121.6 MB. Free memory is still 100.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:47:26,146 INFO L168 Benchmark]: CACSL2BoogieTranslator took 360.51 ms. Allocated memory is still 121.6 MB. Free memory was 83.7 MB in the beginning and 95.2 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:26,147 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.92 ms. Allocated memory is still 121.6 MB. Free memory was 95.2 MB in the beginning and 93.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:47:26,149 INFO L168 Benchmark]: Boogie Preprocessor took 31.57 ms. Allocated memory is still 121.6 MB. Free memory was 93.6 MB in the beginning and 92.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:26,150 INFO L168 Benchmark]: RCFGBuilder took 820.86 ms. Allocated memory is still 121.6 MB. Free memory was 92.3 MB in the beginning and 72.6 MB in the end (delta: 19.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:26,152 INFO L168 Benchmark]: TraceAbstraction took 452.87 ms. Allocated memory is still 121.6 MB. Free memory was 71.8 MB in the beginning and 56.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:26,162 INFO L168 Benchmark]: Witness Printer took 10.55 ms. Allocated memory is still 121.6 MB. Free memory was 56.7 MB in the beginning and 56.3 MB in the end (delta: 406.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:47:26,171 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 121.6 MB. Free memory is still 100.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 360.51 ms. Allocated memory is still 121.6 MB. Free memory was 83.7 MB in the beginning and 95.2 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.92 ms. Allocated memory is still 121.6 MB. Free memory was 95.2 MB in the beginning and 93.6 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.57 ms. Allocated memory is still 121.6 MB. Free memory was 93.6 MB in the beginning and 92.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 820.86 ms. Allocated memory is still 121.6 MB. Free memory was 92.3 MB in the beginning and 72.6 MB in the end (delta: 19.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 452.87 ms. Allocated memory is still 121.6 MB. Free memory was 71.8 MB in the beginning and 56.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 10.55 ms. Allocated memory is still 121.6 MB. Free memory was 56.7 MB in the beginning and 56.3 MB in the end (delta: 406.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 14]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 38, overapproximation of someUnaryDOUBLEoperation at line 20, overapproximation of someBinaryArithmeticDOUBLEoperation at line 39, overapproximation of bitwiseAnd at line 37, overapproximation of someBinaryDOUBLEComparisonOperation at line 61. Possible FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L12] COND FALSE !(!cond) [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r [L43] COND FALSE !(exp % 2 == 0) [L47] r = r * C0 [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; [L63] y = sqrt_custom(x) [L14] COND TRUE !(cond) VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] [L14] reach_error() VAL [C0=707106769/500000000, C1=229761391/1000000000, C2=51869421/40000000, C4=2467767/5000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 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 [2021-10-29 05:47:26,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:47:29,197 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:47:29,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:47:29,258 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:47:29,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:47:29,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:47:29,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:47:29,270 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:47:29,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:47:29,283 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:47:29,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:47:29,287 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:47:29,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:47:29,290 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:47:29,292 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:47:29,297 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:47:29,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:47:29,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:47:29,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:47:29,311 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:47:29,314 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:47:29,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:47:29,318 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:47:29,319 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:47:29,323 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:47:29,323 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:47:29,324 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:47:29,325 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:47:29,326 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:47:29,327 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:47:29,328 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:47:29,329 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:47:29,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:47:29,333 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:47:29,335 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:47:29,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:47:29,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:47:29,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:47:29,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:47:29,340 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:47:29,341 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:47:29,342 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:47:29,397 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:47:29,397 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:47:29,399 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:47:29,399 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:47:29,399 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:47:29,400 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:47:29,400 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:47:29,400 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:47:29,401 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:47:29,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:47:29,404 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:47:29,405 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:47:29,405 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:47:29,405 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:47:29,405 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:47:29,406 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:47:29,406 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:47:29,406 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:47:29,407 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:47:29,407 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:47:29,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:47:29,407 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:47:29,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:47:29,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:47:29,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:47:29,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:47:29,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:47:29,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:47:29,410 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:47:29,410 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:47:29,410 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:47:29,410 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:47:29,411 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:47:29,411 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:47:29,412 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:47:29,412 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_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 14164d07a16e34a605f7e42a9694dd7b1f0302594742e37b160cf821b53bc94e [2021-10-29 05:47:29,916 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:47:29,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:47:29,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:47:29,947 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:47:29,947 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:47:29,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-10-29 05:47:30,027 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/data/db5cd9f5a/6563db4187be4012a830e5f0bef43461/FLAG46d872a36 [2021-10-29 05:47:30,640 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:47:30,642 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/sv-benchmarks/c/float-benchs/sqrt_poly2.c [2021-10-29 05:47:30,652 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/data/db5cd9f5a/6563db4187be4012a830e5f0bef43461/FLAG46d872a36 [2021-10-29 05:47:30,974 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/data/db5cd9f5a/6563db4187be4012a830e5f0bef43461 [2021-10-29 05:47:30,977 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:47:30,979 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:47:30,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:47:30,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:47:30,994 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:47:30,995 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:47:30" (1/1) ... [2021-10-29 05:47:30,996 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ab1bccf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:30, skipping insertion in model container [2021-10-29 05:47:30,997 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:47:30" (1/1) ... [2021-10-29 05:47:31,006 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:47:31,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:47:31,251 WARN L228 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_f5dae870-29af-4291-a4b8-edd47aed8237/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-10-29 05:47:31,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:47:31,314 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:47:31,330 WARN L228 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_f5dae870-29af-4291-a4b8-edd47aed8237/sv-benchmarks/c/float-benchs/sqrt_poly2.c[587,600] [2021-10-29 05:47:31,349 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:47:31,422 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:47:31,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:31 WrapperNode [2021-10-29 05:47:31,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:47:31,426 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:47:31,426 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:47:31,426 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:47:31,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:31" (1/1) ... [2021-10-29 05:47:31,458 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:31" (1/1) ... [2021-10-29 05:47:31,499 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:47:31,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:47:31,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:47:31,504 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:47:31,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:31" (1/1) ... [2021-10-29 05:47:31,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:31" (1/1) ... [2021-10-29 05:47:31,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:31" (1/1) ... [2021-10-29 05:47:31,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:31" (1/1) ... [2021-10-29 05:47:31,554 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:31" (1/1) ... [2021-10-29 05:47:31,569 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:31" (1/1) ... [2021-10-29 05:47:31,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:31" (1/1) ... [2021-10-29 05:47:31,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:47:31,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:47:31,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:47:31,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:47:31,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:31" (1/1) ... [2021-10-29 05:47:31,591 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:47:31,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:47:31,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:47:31,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:47:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-10-29 05:47:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-10-29 05:47:31,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:47:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:47:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-10-29 05:47:31,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:47:31,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:47:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-29 05:47:31,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-10-29 05:47:36,331 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:47:36,331 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 05:47:36,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:47:36 BoogieIcfgContainer [2021-10-29 05:47:36,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:47:36,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:47:36,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:47:36,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:47:36,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:47:30" (1/3) ... [2021-10-29 05:47:36,341 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e590972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:47:36, skipping insertion in model container [2021-10-29 05:47:36,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:47:31" (2/3) ... [2021-10-29 05:47:36,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e590972 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:47:36, skipping insertion in model container [2021-10-29 05:47:36,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:47:36" (3/3) ... [2021-10-29 05:47:36,344 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_poly2.c [2021-10-29 05:47:36,351 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:47:36,351 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:47:36,410 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:47:36,418 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:47:36,419 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:47:36,434 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:47:36,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:47:36,441 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:47:36,442 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:47:36,442 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:47:36,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:47:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash -594069783, now seen corresponding path program 1 times [2021-10-29 05:47:36,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:47:36,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083372233] [2021-10-29 05:47:36,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:47:36,467 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:47:36,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:47:36,475 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:47:36,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:47:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:47:38,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:47:38,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:47:38,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:47:38,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:47:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:47:38,534 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:47:38,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083372233] [2021-10-29 05:47:38,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2083372233] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:47:38,536 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:47:38,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:47:38,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641735218] [2021-10-29 05:47:38,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:47:38,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:47:38,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:47:38,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:47:38,564 INFO L87 Difference]: Start difference. First operand has 14 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:47:38,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:47:38,581 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2021-10-29 05:47:38,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:47:38,582 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 05:47:38,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:47:38,592 INFO L225 Difference]: With dead ends: 25 [2021-10-29 05:47:38,592 INFO L226 Difference]: Without dead ends: 10 [2021-10-29 05:47:38,595 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:47:38,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-10-29 05:47:38,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-10-29 05:47:38,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:47:38,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2021-10-29 05:47:38,630 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 9 [2021-10-29 05:47:38,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:47:38,631 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2021-10-29 05:47:38,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:47:38,631 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2021-10-29 05:47:38,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:47:38,632 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:47:38,632 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:47:38,662 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:47:38,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:47:38,833 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:47:38,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:47:38,834 INFO L85 PathProgramCache]: Analyzing trace with hash 1180937579, now seen corresponding path program 1 times [2021-10-29 05:47:38,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:47:38,836 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [654377867] [2021-10-29 05:47:38,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:47:38,836 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:47:38,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:47:38,838 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:47:38,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:47:40,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:47:40,569 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:47:42,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:47:42,409 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:47:42,410 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:47:42,412 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:47:42,473 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:47:42,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:47:42,618 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 05:47:42,620 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:47:42,685 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:47:42 BoogieIcfgContainer [2021-10-29 05:47:42,685 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:47:42,686 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:47:42,686 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:47:42,687 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:47:42,688 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:47:36" (3/4) ... [2021-10-29 05:47:42,690 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:47:42,763 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:47:42,763 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:47:42,766 INFO L168 Benchmark]: Toolchain (without parser) took 11785.76 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 45.7 MB in the beginning and 63.6 MB in the end (delta: -17.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:42,766 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 67.1 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:47:42,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 444.04 ms. Allocated memory is still 67.1 MB. Free memory was 45.5 MB in the beginning and 49.6 MB in the end (delta: -4.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:42,768 INFO L168 Benchmark]: Boogie Procedure Inliner took 76.17 ms. Allocated memory is still 67.1 MB. Free memory was 49.6 MB in the beginning and 47.8 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:47:42,769 INFO L168 Benchmark]: Boogie Preprocessor took 76.67 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 46.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:47:42,770 INFO L168 Benchmark]: RCFGBuilder took 4753.90 ms. Allocated memory is still 67.1 MB. Free memory was 46.3 MB in the beginning and 35.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:42,770 INFO L168 Benchmark]: TraceAbstraction took 6349.36 ms. Allocated memory is still 67.1 MB. Free memory was 34.7 MB in the beginning and 29.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:42,771 INFO L168 Benchmark]: Witness Printer took 77.26 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 28.9 MB in the beginning and 63.6 MB in the end (delta: -34.7 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:47:42,775 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 67.1 MB. Free memory is still 47.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 444.04 ms. Allocated memory is still 67.1 MB. Free memory was 45.5 MB in the beginning and 49.6 MB in the end (delta: -4.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 76.17 ms. Allocated memory is still 67.1 MB. Free memory was 49.6 MB in the beginning and 47.8 MB in the end (delta: 1.9 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.67 ms. Allocated memory is still 67.1 MB. Free memory was 47.8 MB in the beginning and 46.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 4753.90 ms. Allocated memory is still 67.1 MB. Free memory was 46.3 MB in the beginning and 35.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6349.36 ms. Allocated memory is still 67.1 MB. Free memory was 34.7 MB in the beginning and 29.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. * Witness Printer took 77.26 ms. Allocated memory was 67.1 MB in the beginning and 83.9 MB in the end (delta: 16.8 MB). Free memory was 28.9 MB in the beginning and 63.6 MB in the end (delta: -34.7 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] double C0 = 1.414213538; [L18] double C1 = 0.229761391; [L19] double C2 = 1.296735525; [L20] double C3 = -0.901098370; [L21] double C4 = 0.493553400; [L22] double C5 = -0.118958666; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L58] double x,y; [L60] x = __VERIFIER_nondet_double() [L12] COND FALSE !(!cond) VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L31] union u x; [L32] double r; [L33] int exp; [L35] x.d = a [L37] EXPR x.i[0] [L37] exp = (x.i[0] & 0x7FF00000) >> 20 [L38] EXPR x.i[0] [L38] x.i[0] = (x.i[0] & 0x800FFFFF) | 0x3FF00000 [L39] EXPR x.d [L39] r = x.d * 0.5 [L41] r = C1+C2+(C3+(C4+C5*r)*r)*r VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L43] COND TRUE exp % 2 == 0 [L44] exp++ VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L50] x.i[0] = (exp/2 + 511) << 20 [L51] EXPR x.d [L51] r = r * x.d [L53] return r; [L53] return r; VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L63] y = sqrt_custom(x) [L14] COND TRUE !(cond) VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] [L14] reach_error() VAL [C0=1.414213538, C1=0.229761391, C2=1.296735525, C3=-0.90109837, C4=0.4935534, C5=-0.118958666] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 14 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 3.3s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 56 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 incorrect! [2021-10-29 05:47:42,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f5dae870-29af-4291-a4b8-edd47aed8237/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...