./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8 --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 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:57:27,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:57:27,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:57:27,762 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:57:27,763 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:57:27,764 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:57:27,767 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:57:27,770 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:57:27,772 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:57:27,774 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:57:27,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:57:27,777 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:57:27,778 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:57:27,780 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:57:27,782 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:57:27,784 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:57:27,785 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:57:27,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:57:27,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:57:27,793 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:57:27,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:57:27,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:57:27,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:57:27,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:57:27,806 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:57:27,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:57:27,807 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:57:27,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:57:27,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:57:27,811 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:57:27,812 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:57:27,813 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:57:27,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:57:27,816 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:57:27,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:57:27,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:57:27,820 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:57:27,821 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:57:27,821 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:57:27,822 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:57:27,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:57:27,825 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 00:57:27,858 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:57:27,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:57:27,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:57:27,860 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:57:27,860 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:57:27,860 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:57:27,860 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 00:57:27,860 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:57:27,861 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:57:27,861 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 00:57:27,861 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 00:57:27,861 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:57:27,862 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 00:57:27,862 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 00:57:27,862 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 00:57:27,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:57:27,863 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:57:27,863 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 00:57:27,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:57:27,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:57:27,864 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:57:27,864 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:57:27,865 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:57:27,865 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:57:27,865 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:57:27,865 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:57:27,865 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:57:27,866 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:57:27,866 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:57:27,866 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:57:27,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:57:27,867 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:57:27,867 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:57:27,867 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:57:27,867 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 00:57:27,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 00:57:27,868 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:57:27,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:57:27,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:57:27,868 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_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 [2021-11-07 00:57:28,184 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:57:28,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:57:28,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:57:28,223 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:57:28,224 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:57:28,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-11-07 00:57:28,303 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/data/84f14e1ee/24cbd05c6c6b47958b8f39795c46c678/FLAGf6e69dec0 [2021-11-07 00:57:28,891 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:57:28,892 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-11-07 00:57:28,900 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/data/84f14e1ee/24cbd05c6c6b47958b8f39795c46c678/FLAGf6e69dec0 [2021-11-07 00:57:29,247 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/data/84f14e1ee/24cbd05c6c6b47958b8f39795c46c678 [2021-11-07 00:57:29,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:57:29,253 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:57:29,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:57:29,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:57:29,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:57:29,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:29" (1/1) ... [2021-11-07 00:57:29,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22fa37b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:29, skipping insertion in model container [2021-11-07 00:57:29,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:29" (1/1) ... [2021-11-07 00:57:29,285 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:57:29,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:57:29,523 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_e1bea963-b0bb-4700-bb46-f527f90e6c92/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-11-07 00:57:29,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:29,562 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:57:29,578 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_e1bea963-b0bb-4700-bb46-f527f90e6c92/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-11-07 00:57:29,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:29,605 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:57:29,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:29 WrapperNode [2021-11-07 00:57:29,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:57:29,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:57:29,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:57:29,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:57:29,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:29" (1/1) ... [2021-11-07 00:57:29,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:29" (1/1) ... [2021-11-07 00:57:29,653 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:57:29,654 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:57:29,655 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:57:29,655 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:57:29,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:29" (1/1) ... [2021-11-07 00:57:29,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:29" (1/1) ... [2021-11-07 00:57:29,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:29" (1/1) ... [2021-11-07 00:57:29,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:29" (1/1) ... [2021-11-07 00:57:29,676 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:29" (1/1) ... [2021-11-07 00:57:29,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:29" (1/1) ... [2021-11-07 00:57:29,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:29" (1/1) ... [2021-11-07 00:57:29,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:57:29,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:57:29,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:57:29,687 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:57:29,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:29" (1/1) ... [2021-11-07 00:57:29,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:57:29,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:57:29,730 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:57:29,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:57:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 00:57:29,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:57:29,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:57:29,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:57:30,342 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:57:30,343 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-07 00:57:30,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:30 BoogieIcfgContainer [2021-11-07 00:57:30,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:57:30,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:57:30,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:57:30,352 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:57:30,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:57:29" (1/3) ... [2021-11-07 00:57:30,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112a600e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:30, skipping insertion in model container [2021-11-07 00:57:30,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:29" (2/3) ... [2021-11-07 00:57:30,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112a600e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:30, skipping insertion in model container [2021-11-07 00:57:30,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:30" (3/3) ... [2021-11-07 00:57:30,356 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2021-11-07 00:57:30,363 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:57:30,364 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 00:57:30,422 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:57:30,431 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 [2021-11-07 00:57:30,431 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 00:57:30,448 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 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) [2021-11-07 00:57:30,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-11-07 00:57:30,454 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:30,455 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-11-07 00:57:30,456 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:57:30,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:30,463 INFO L85 PathProgramCache]: Analyzing trace with hash 86253018, now seen corresponding path program 1 times [2021-11-07 00:57:30,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 00:57:30,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451963461] [2021-11-07 00:57:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:30,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 00:57:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 00:57:30,626 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 00:57:30,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 00:57:30,688 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 00:57:30,690 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 00:57:30,692 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 00:57:30,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 00:57:30,699 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 00:57:30,703 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 00:57:30,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:57:30 BoogieIcfgContainer [2021-11-07 00:57:30,730 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 00:57:30,731 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 00:57:30,731 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 00:57:30,731 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 00:57:30,732 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:30" (3/4) ... [2021-11-07 00:57:30,736 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 00:57:30,736 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 00:57:30,739 INFO L168 Benchmark]: Toolchain (without parser) took 1484.21 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 65.0 MB in the beginning and 72.3 MB in the end (delta: -7.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 16.1 GB. [2021-11-07 00:57:30,740 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory is still 51.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:57:30,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 351.09 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 65.0 MB in the beginning and 103.2 MB in the end (delta: -38.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 00:57:30,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 45.72 ms. Allocated memory is still 127.9 MB. Free memory was 103.2 MB in the beginning and 101.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:57:30,743 INFO L168 Benchmark]: Boogie Preprocessor took 31.36 ms. Allocated memory is still 127.9 MB. Free memory was 101.7 MB in the beginning and 100.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 00:57:30,743 INFO L168 Benchmark]: RCFGBuilder took 659.11 ms. Allocated memory is still 127.9 MB. Free memory was 100.2 MB in the beginning and 87.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:57:30,744 INFO L168 Benchmark]: TraceAbstraction took 382.52 ms. Allocated memory is still 127.9 MB. Free memory was 86.5 MB in the beginning and 72.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 00:57:30,745 INFO L168 Benchmark]: Witness Printer took 5.41 ms. Allocated memory is still 127.9 MB. Free memory was 72.5 MB in the beginning and 72.3 MB in the end (delta: 187.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 00:57:30,750 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 96.5 MB. Free memory is still 51.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 351.09 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 65.0 MB in the beginning and 103.2 MB in the end (delta: -38.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 45.72 ms. Allocated memory is still 127.9 MB. Free memory was 103.2 MB in the beginning and 101.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 31.36 ms. Allocated memory is still 127.9 MB. Free memory was 101.7 MB in the beginning and 100.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 659.11 ms. Allocated memory is still 127.9 MB. Free memory was 100.2 MB in the beginning and 87.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 382.52 ms. Allocated memory is still 127.9 MB. Free memory was 86.5 MB in the beginning and 72.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.41 ms. Allocated memory is still 127.9 MB. Free memory was 72.5 MB in the beginning and 72.3 MB in the end (delta: 187.2 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: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticDOUBLEoperation at line 37, overapproximation of someUnaryDOUBLEoperation at line 25, overapproximation of someBinaryDOUBLEComparisonOperation at line 52. Possible FailurePath: [L15] double _EPS = 1e-6; [L42] double d, dd, r; [L43] double epsilon = 1e-8; [L45] d = 1. VAL [_EPS=1/1000000] [L45] COND TRUE d <= 20. [L47] dd = __VERIFIER_nondet_double() [L11] COND FALSE !(!cond) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND TRUE Input <= 1.0 [L21] xn = 1.0 [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 VAL [_EPS=1/1000000] [L28] COND FALSE !(\read(cond)) [L37] return 1.0 / xnp1; [L50] r = SqrtR(dd) [L13] COND TRUE !(cond) VAL [_EPS=1/1000000] [L13] reach_error() VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, 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=8occurred 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, 5 NumberOfCodeBlocks, 5 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 [2021-11-07 00:57:30,806 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8 --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 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 00:57:33,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 00:57:33,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 00:57:33,850 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 00:57:33,851 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 00:57:33,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 00:57:33,861 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 00:57:33,872 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 00:57:33,876 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 00:57:33,885 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 00:57:33,887 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 00:57:33,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 00:57:33,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 00:57:33,894 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 00:57:33,896 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 00:57:33,898 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 00:57:33,905 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 00:57:33,906 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 00:57:33,909 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 00:57:33,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 00:57:33,921 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 00:57:33,923 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 00:57:33,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 00:57:33,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 00:57:33,937 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 00:57:33,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 00:57:33,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 00:57:33,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 00:57:33,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 00:57:33,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 00:57:33,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 00:57:33,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 00:57:33,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 00:57:33,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 00:57:33,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 00:57:33,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 00:57:33,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 00:57:33,955 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 00:57:33,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 00:57:33,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 00:57:33,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 00:57:33,965 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 00:57:34,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 00:57:34,020 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 00:57:34,021 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 00:57:34,022 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 00:57:34,022 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 00:57:34,022 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 00:57:34,023 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 00:57:34,023 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 00:57:34,024 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 00:57:34,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 00:57:34,027 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 00:57:34,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 00:57:34,028 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 00:57:34,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 00:57:34,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 00:57:34,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 00:57:34,029 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 00:57:34,029 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 00:57:34,030 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 00:57:34,030 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 00:57:34,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 00:57:34,030 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 00:57:34,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 00:57:34,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 00:57:34,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 00:57:34,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 00:57:34,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:57:34,032 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 00:57:34,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 00:57:34,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 00:57:34,033 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 00:57:34,033 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 00:57:34,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 00:57:34,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 00:57:34,035 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 00:57:34,035 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_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6126c292b79b2663ac597229a34ee56f0c149d9383459c587f75b8bcd2abff05 [2021-11-07 00:57:34,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 00:57:34,594 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 00:57:34,598 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 00:57:34,599 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 00:57:34,600 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 00:57:34,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-11-07 00:57:34,698 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/data/8b62487c0/9fe6e38a9cd845819257dc7bf1b185c1/FLAGa421a5235 [2021-11-07 00:57:35,409 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 00:57:35,411 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c [2021-11-07 00:57:35,422 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/data/8b62487c0/9fe6e38a9cd845819257dc7bf1b185c1/FLAGa421a5235 [2021-11-07 00:57:35,747 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/data/8b62487c0/9fe6e38a9cd845819257dc7bf1b185c1 [2021-11-07 00:57:35,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 00:57:35,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 00:57:35,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 00:57:35,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 00:57:35,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 00:57:35,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:35" (1/1) ... [2021-11-07 00:57:35,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b45111 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:35, skipping insertion in model container [2021-11-07 00:57:35,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:57:35" (1/1) ... [2021-11-07 00:57:35,783 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 00:57:35,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 00:57:36,002 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_e1bea963-b0bb-4700-bb46-f527f90e6c92/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-11-07 00:57:36,060 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:36,089 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 00:57:36,153 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_e1bea963-b0bb-4700-bb46-f527f90e6c92/sv-benchmarks/c/float-benchs/sqrt_Newton_pseudoconstant.c[557,570] [2021-11-07 00:57:36,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 00:57:36,239 INFO L208 MainTranslator]: Completed translation [2021-11-07 00:57:36,240 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:36 WrapperNode [2021-11-07 00:57:36,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 00:57:36,242 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 00:57:36,243 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 00:57:36,243 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 00:57:36,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:36" (1/1) ... [2021-11-07 00:57:36,280 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:36" (1/1) ... [2021-11-07 00:57:36,320 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 00:57:36,321 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 00:57:36,321 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 00:57:36,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 00:57:36,332 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:36" (1/1) ... [2021-11-07 00:57:36,332 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:36" (1/1) ... [2021-11-07 00:57:36,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:36" (1/1) ... [2021-11-07 00:57:36,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:36" (1/1) ... [2021-11-07 00:57:36,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:36" (1/1) ... [2021-11-07 00:57:36,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:36" (1/1) ... [2021-11-07 00:57:36,383 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:36" (1/1) ... [2021-11-07 00:57:36,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 00:57:36,397 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 00:57:36,397 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 00:57:36,398 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 00:57:36,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:36" (1/1) ... [2021-11-07 00:57:36,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 00:57:36,422 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 00:57:36,441 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 00:57:36,465 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 00:57:36,507 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 00:57:36,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 00:57:36,508 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 00:57:36,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 00:57:46,261 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 00:57:46,262 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-11-07 00:57:46,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:46 BoogieIcfgContainer [2021-11-07 00:57:46,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 00:57:46,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 00:57:46,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 00:57:46,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 00:57:46,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:57:35" (1/3) ... [2021-11-07 00:57:46,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1ed209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:46, skipping insertion in model container [2021-11-07 00:57:46,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:57:36" (2/3) ... [2021-11-07 00:57:46,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d1ed209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:57:46, skipping insertion in model container [2021-11-07 00:57:46,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:46" (3/3) ... [2021-11-07 00:57:46,276 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Newton_pseudoconstant.c [2021-11-07 00:57:46,283 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 00:57:46,283 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 00:57:46,343 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 00:57:46,351 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 [2021-11-07 00:57:46,352 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 00:57:46,366 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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) [2021-11-07 00:57:46,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 00:57:46,372 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:46,373 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:46,373 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:57:46,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:46,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1569195288, now seen corresponding path program 1 times [2021-11-07 00:57:46,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:46,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [527039636] [2021-11-07 00:57:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:46,410 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:46,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:46,411 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:46,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 00:57:48,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:48,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 00:57:48,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:48,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:48,376 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:57:48,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:48,484 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:57:48,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [527039636] [2021-11-07 00:57:48,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [527039636] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:57:48,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:57:48,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 00:57:48,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468898396] [2021-11-07 00:57:48,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 00:57:48,495 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:57:48,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 00:57:48,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:57:48,515 INFO L87 Difference]: Start difference. First operand has 18 states, 16 states have (on average 1.5) internal successors, (24), 17 states have internal predecessors, (24), 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 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-07 00:57:48,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:57:48,535 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2021-11-07 00:57:48,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 00:57:48,537 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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 12 [2021-11-07 00:57:48,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:57:48,548 INFO L225 Difference]: With dead ends: 34 [2021-11-07 00:57:48,548 INFO L226 Difference]: Without dead ends: 14 [2021-11-07 00:57:48,553 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 00:57:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-11-07 00:57:48,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-11-07 00:57:48,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 13 states have (on average 1.2307692307692308) 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) [2021-11-07 00:57:48,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 16 transitions. [2021-11-07 00:57:48,597 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 16 transitions. Word has length 12 [2021-11-07 00:57:48,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:57:48,597 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 16 transitions. [2021-11-07 00:57:48,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 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) [2021-11-07 00:57:48,598 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 16 transitions. [2021-11-07 00:57:48,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 00:57:48,599 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:57:48,599 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:57:48,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 00:57:48,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:57:48,824 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:57:48,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:57:48,825 INFO L85 PathProgramCache]: Analyzing trace with hash -2049407722, now seen corresponding path program 1 times [2021-11-07 00:57:48,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:57:48,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [465656024] [2021-11-07 00:57:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:57:48,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:57:48,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:57:48,834 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:57:48,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 00:57:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:57:50,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-07 00:57:50,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:57:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:57:51,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 00:58:02,282 WARN L838 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) is different from false [2021-11-07 00:58:04,361 WARN L860 $PredicateComparison]: unable to prove that (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) is different from true [2021-11-07 00:58:27,288 WARN L207 SmtUtils]: Spent 9.29 s on a formula simplification. DAG size of input: 15 DAG size of output: 11 [2021-11-07 00:58:35,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 00:58:35,279 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 00:58:35,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [465656024] [2021-11-07 00:58:35,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [465656024] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 00:58:35,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 00:58:35,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2021-11-07 00:58:35,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497138119] [2021-11-07 00:58:35,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 00:58:35,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 00:58:35,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 00:58:35,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=26, Unknown=3, NotChecked=10, Total=56 [2021-11-07 00:58:35,285 INFO L87 Difference]: Start difference. First operand 14 states and 16 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-11-07 00:58:38,547 WARN L860 $PredicateComparison]: unable to prove that (and (= c_~_EPS~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (or (let ((.cse0 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) .cse0) (fp.mul c_currentRoundingMode c_~_EPS~0 .cse0))) (forall ((v_ULTIMATE.start_SqrtR_~linf~0_5 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) c_~_EPS~0) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xn~0 c_ULTIMATE.start_SqrtR_~xn~0)) v_ULTIMATE.start_SqrtR_~linf~0_5))) (= c_currentRoundingMode roundNearestTiesToEven) (= c_ULTIMATE.start_SqrtR_~xn~0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) is different from true [2021-11-07 00:59:02,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 00:59:02,863 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-11-07 00:59:02,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 00:59:02,940 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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 12 [2021-11-07 00:59:02,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 00:59:02,941 INFO L225 Difference]: With dead ends: 32 [2021-11-07 00:59:02,941 INFO L226 Difference]: Without dead ends: 20 [2021-11-07 00:59:02,942 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 25.4s TimeCoverageRelationStatistics Valid=19, Invalid=27, Unknown=4, NotChecked=22, Total=72 [2021-11-07 00:59:02,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-11-07 00:59:02,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-11-07 00:59:02,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.2105263157894737) internal successors, (23), 19 states have internal predecessors, (23), 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) [2021-11-07 00:59:02,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-11-07 00:59:02,957 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 12 [2021-11-07 00:59:02,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 00:59:02,957 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-11-07 00:59:02,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 7 states have internal predecessors, (20), 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) [2021-11-07 00:59:02,958 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-11-07 00:59:02,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 00:59:02,959 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 00:59:02,963 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 00:59:02,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 00:59:03,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 00:59:03,164 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 00:59:03,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 00:59:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash -274400360, now seen corresponding path program 1 times [2021-11-07 00:59:03,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 00:59:03,166 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1683908920] [2021-11-07 00:59:03,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 00:59:03,167 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 00:59:03,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 00:59:03,168 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 00:59:03,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 00:59:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 00:59:06,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-07 00:59:06,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 00:59:55,067 WARN L207 SmtUtils]: Spent 12.01 s on a formula simplification that was a NOOP. DAG size: 22 [2021-11-07 01:00:34,009 WARN L207 SmtUtils]: Spent 5.06 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 01:00:36,289 WARN L838 $PredicateComparison]: unable to prove that (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (not .cse0) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)))))) is different from false [2021-11-07 01:00:38,362 WARN L860 $PredicateComparison]: unable to prove that (and (let ((.cse0 (let ((.cse1 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse2 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse1) .cse2) (fp.mul c_currentRoundingMode .cse1 .cse2))))) (or (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (not .cse0) (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv0 32))) (and (= c_ULTIMATE.start_SqrtR_~cond~0 (_ bv1 32)) (or (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0)) .cse0)))) (= c_currentRoundingMode roundNearestTiesToEven) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse3 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse3 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse3 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse3)))))) is different from true [2021-11-07 01:01:07,647 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)))))) is different from false [2021-11-07 01:01:09,726 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (not (fp.lt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0)) ULTIMATE.start_SqrtR_~linf~0))) (= c_currentRoundingMode roundNearestTiesToEven) (not (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse1 (fp.add c_currentRoundingMode c_ULTIMATE.start_SqrtR_~xnp1~0 c_ULTIMATE.start_SqrtR_~xnp1~0))) (fp.gt (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse0) .cse1) (fp.mul c_currentRoundingMode .cse0 .cse1)))) (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (= (fp.div c_currentRoundingMode .cse2 ULTIMATE.start_SqrtR_~Input) c_ULTIMATE.start_SqrtR_~xnp1~0) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse2)))))) is different from true [2021-11-07 01:01:15,803 WARN L207 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:01:21,610 WARN L207 SmtUtils]: Spent 5.81 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 01:01:27,506 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:01:33,427 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:01:39,396 WARN L207 SmtUtils]: Spent 5.95 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 01:01:44,787 WARN L207 SmtUtils]: Spent 5.39 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 01:01:47,290 WARN L838 $PredicateComparison]: unable to prove that (and (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode 1.0))) (let ((.cse4 (fp.div c_currentRoundingMode .cse0 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 1000000.0))) (.cse3 (fp.add c_currentRoundingMode .cse4 .cse4))) (let ((.cse1 (fp.mul c_currentRoundingMode (fp.mul c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 2.0) .cse2) .cse3))) (and (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add c_currentRoundingMode .cse0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1.0 100000000.0)))) (not (fp.gt .cse1 (fp.mul c_currentRoundingMode .cse2 .cse3))) (not (fp.lt .cse1 ULTIMATE.start_SqrtR_~linf~0)) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse0)) (= |c_ULTIMATE.start_SqrtR_#res| (fp.div c_currentRoundingMode .cse0 .cse4)))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-11-07 01:01:53,298 WARN L207 SmtUtils]: Spent 5.95 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:02:01,592 WARN L207 SmtUtils]: Spent 5.84 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:02:07,453 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:02:13,313 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 01:02:19,199 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:02:25,159 WARN L207 SmtUtils]: Spent 5.95 s on a formula simplification that was a NOOP. DAG size: 9 [2021-11-07 01:02:31,033 WARN L207 SmtUtils]: Spent 5.87 s on a formula simplification that was a NOOP. DAG size: 9 [2021-11-07 01:02:36,981 WARN L207 SmtUtils]: Spent 5.95 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 01:02:45,329 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:02:53,647 WARN L207 SmtUtils]: Spent 5.83 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:02:59,532 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:03:05,385 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 01:03:11,239 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:03:16,658 WARN L207 SmtUtils]: Spent 5.42 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:03:22,468 WARN L207 SmtUtils]: Spent 5.81 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 01:03:30,817 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:03:36,741 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:03:42,666 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 01:03:48,553 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:03:54,021 WARN L207 SmtUtils]: Spent 5.47 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:04:00,016 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 01:04:05,972 WARN L207 SmtUtils]: Spent 5.95 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:04:11,968 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 01:04:17,842 WARN L207 SmtUtils]: Spent 5.87 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:04:23,772 WARN L207 SmtUtils]: Spent 5.93 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 01:04:29,625 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:04:35,527 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:04:41,486 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:04:47,441 WARN L207 SmtUtils]: Spent 5.95 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 01:04:53,331 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:04:59,190 WARN L207 SmtUtils]: Spent 5.85 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 01:05:05,184 WARN L207 SmtUtils]: Spent 5.99 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:05:11,049 WARN L207 SmtUtils]: Spent 5.86 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:05:16,942 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 9 [2021-11-07 01:05:22,820 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 9 [2021-11-07 01:05:28,742 WARN L207 SmtUtils]: Spent 5.92 s on a formula simplification that was a NOOP. DAG size: 3 [2021-11-07 01:05:34,738 WARN L207 SmtUtils]: Spent 6.00 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 01:05:37,221 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse1 .cse7))) (let ((.cse4 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (.cse5 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse4) (not .cse5))) (and .cse4 .cse5 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)))))))) is different from false [2021-11-07 01:05:39,531 WARN L860 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse7 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse7 .cse7))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (let ((.cse6 (fp.div roundNearestTiesToEven .cse1 .cse7))) (let ((.cse4 (fp.geq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (.cse5 (fp.leq .cse6 ((_ to_fp 11 53) roundNearestTiesToEven 5.0)))) (or (and (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv0 32)) (or (not .cse4) (not .cse5))) (and .cse4 .cse5 (= c_ULTIMATE.start___VERIFIER_assert_~cond (_ bv1 32)))))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)))))))) is different from true [2021-11-07 01:05:47,937 WARN L207 SmtUtils]: Spent 5.91 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:05:56,431 WARN L207 SmtUtils]: Spent 6.01 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:06:02,528 WARN L207 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:06:08,569 WARN L207 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 01:06:14,509 WARN L207 SmtUtils]: Spent 5.94 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:06:20,028 WARN L207 SmtUtils]: Spent 5.52 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:06:26,141 WARN L207 SmtUtils]: Spent 6.11 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 01:06:34,567 WARN L207 SmtUtils]: Spent 5.98 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:06:40,526 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:06:46,409 WARN L207 SmtUtils]: Spent 5.88 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 01:06:52,300 WARN L207 SmtUtils]: Spent 5.89 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:06:57,921 WARN L207 SmtUtils]: Spent 5.62 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:07:03,969 WARN L207 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 01:07:10,016 WARN L207 SmtUtils]: Spent 6.05 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:07:16,112 WARN L207 SmtUtils]: Spent 6.10 s on a formula simplification that was a NOOP. DAG size: 8 [2021-11-07 01:07:22,178 WARN L207 SmtUtils]: Spent 6.06 s on a formula simplification that was a NOOP. DAG size: 15 [2021-11-07 01:07:28,255 WARN L207 SmtUtils]: Spent 6.08 s on a formula simplification that was a NOOP. DAG size: 6 [2021-11-07 01:07:34,362 WARN L207 SmtUtils]: Spent 6.11 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:07:40,527 WARN L207 SmtUtils]: Spent 6.16 s on a formula simplification that was a NOOP. DAG size: 10 [2021-11-07 01:07:43,044 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_SqrtR_~Input (_ FloatingPoint 11 53)) (ULTIMATE.start_SqrtR_~linf~0 (_ FloatingPoint 11 53))) (let ((.cse1 ((_ to_fp 11 53) roundNearestTiesToEven 1.0))) (let ((.cse5 (fp.div roundNearestTiesToEven .cse1 ULTIMATE.start_SqrtR_~Input))) (let ((.cse2 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 1000000.0))) (.cse3 (fp.add roundNearestTiesToEven .cse5 .cse5))) (let ((.cse0 (fp.mul roundNearestTiesToEven (fp.mul roundNearestTiesToEven ((_ to_fp 11 53) roundNearestTiesToEven 2.0) .cse2) .cse3))) (and (not (fp.lt .cse0 ULTIMATE.start_SqrtR_~linf~0)) (fp.leq ULTIMATE.start_SqrtR_~Input (fp.add roundNearestTiesToEven .cse1 ((_ to_fp 11 53) roundNearestTiesToEven (/ 1.0 100000000.0)))) (not (fp.gt .cse0 (fp.mul roundNearestTiesToEven .cse2 .cse3))) (not (fp.leq ULTIMATE.start_SqrtR_~Input .cse1)) (let ((.cse4 (fp.div roundNearestTiesToEven .cse1 .cse5))) (or (not (fp.geq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven (/ 9.0 10.0)))) (not (fp.leq .cse4 ((_ to_fp 11 53) roundNearestTiesToEven 5.0))))))))))) is different from false [2021-11-07 01:07:44,530 WARN L228 Executor]: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) stderr output: (error "out of memory") [2021-11-07 01:07:44,531 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:07:44,531 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1683908920] [2021-11-07 01:07:44,532 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Received EOF on stdin. stderr output: (error "out of memory") [2021-11-07 01:07:44,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 101 [2021-11-07 01:07:44,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [166185337] [2021-11-07 01:07:44,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:44,534 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-07 01:07:44,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/cvc4 [2021-11-07 01:07:44,537 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-07 01:07:44,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Waiting until timeout for monitored process [2021-11-07 01:07:50,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:07:50,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 01:07:50,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:07:50,599 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-07 01:07:50,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [298751139] [2021-11-07 01:07:50,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:07:50,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:07:50,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:07:50,602 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:07:50,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 01:09:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:09:11,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 19 conjunts are in the unsatisfiable core [2021-11-07 01:09:11,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:09:11,934 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: External (MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1) with exit command (exit)) Connection to SMT solver broken [2021-11-07 01:09:11,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:09:11,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-07 01:09:11,935 ERROR L172 FreeRefinementEngine]: Strategy WALRUS failed to provide any proof altough trace is infeasible [2021-11-07 01:09:11,935 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-07 01:09:11,942 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:09:12,101 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-07 01:09:12,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt (5)] Forceful destruction successful, exit code 0 [2021-11-07 01:09:12,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-07 01:09:12,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/cvc4 --incremental --print-success --lang smt,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1bea963-b0bb-4700-bb46-f527f90e6c92/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:09:12,547 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2021-11-07 01:09:12,549 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:09:12,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:09:12 BoogieIcfgContainer [2021-11-07 01:09:12,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:09:12,563 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:09:12,563 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:09:12,563 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:09:12,564 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:57:46" (3/4) ... [2021-11-07 01:09:12,568 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:09:12,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:09:12,570 INFO L168 Benchmark]: Toolchain (without parser) took 696815.98 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 43.8 MB in the beginning and 30.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 29.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:09:12,571 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 65.0 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:09:12,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 486.96 ms. Allocated memory is still 65.0 MB. Free memory was 43.6 MB in the beginning and 46.7 MB in the end (delta: -3.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:09:12,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.52 ms. Allocated memory is still 65.0 MB. Free memory was 46.5 MB in the beginning and 44.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:09:12,574 INFO L168 Benchmark]: Boogie Preprocessor took 75.36 ms. Allocated memory is still 65.0 MB. Free memory was 44.9 MB in the beginning and 43.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:09:12,582 INFO L168 Benchmark]: RCFGBuilder took 9868.19 ms. Allocated memory is still 65.0 MB. Free memory was 43.3 MB in the beginning and 32.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:09:12,583 INFO L168 Benchmark]: TraceAbstraction took 686294.96 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 32.5 MB in the beginning and 31.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:09:12,583 INFO L168 Benchmark]: Witness Printer took 5.33 ms. Allocated memory is still 79.7 MB. Free memory is still 30.5 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:09:12,586 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 65.0 MB. Free memory is still 45.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 486.96 ms. Allocated memory is still 65.0 MB. Free memory was 43.6 MB in the beginning and 46.7 MB in the end (delta: -3.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 77.52 ms. Allocated memory is still 65.0 MB. Free memory was 46.5 MB in the beginning and 44.9 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 75.36 ms. Allocated memory is still 65.0 MB. Free memory was 44.9 MB in the beginning and 43.5 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 9868.19 ms. Allocated memory is still 65.0 MB. Free memory was 43.3 MB in the beginning and 32.9 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 686294.96 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 32.5 MB in the beginning and 31.0 MB in the end (delta: 1.5 MB). Peak memory consumption was 17.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.33 ms. Allocated memory is still 79.7 MB. Free memory is still 30.5 MB. 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: 13]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L15] double _EPS = 1e-6; [L42] double d, dd, r; [L43] double epsilon = 1e-8; [L45] d = 1. [L45] COND TRUE d <= 20. [L47] dd = __VERIFIER_nondet_double() [L11] COND FALSE !(!cond) [L19] double xn, xnp1, residu, lsup, linf; [L20] int i, cond; [L21] COND FALSE !(Input <= 1.0) [L21] xn = 1.0/Input [L22] xnp1 = xn [L23] residu = 2.0*_EPS*(xn+xnp1) [L24] lsup = _EPS * (xn+xnp1) [L25] linf = -lsup [L26] cond = ((residu > lsup) || (residu < linf)) [L27] i = 0 [L28] COND FALSE !(\read(cond)) [L37] return 1.0 / xnp1; [L50] r = SqrtR(dd) [L13] COND TRUE !(cond) [L13] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 686.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 27.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 31 SDtfs, 1 SDslu, 29 SDs, 0 SdLazy, 23 SolverSat, 0 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 24.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 25.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, InterpolantAutomatonStates: 7, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 6.6s SatisfiabilityAnalysisTime, 563.1s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 44 ConstructedInterpolants, 1 QuantifiedInterpolants, 272 SizeOfPredicates, 7 NumberOfNonLiveVariables, 141 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN