./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i --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_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/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_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/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_98d587ee-4c7a-453e-a035-e3fa148bcfb6/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 05bad3204b290e97aeb846ad3dbb6049f2cace286a3dfc4906d20efd3948c7ea --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:19:31,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:19:31,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:19:31,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:19:31,839 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:19:31,840 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:19:31,842 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:19:31,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:19:31,847 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:19:31,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:19:31,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:19:31,852 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:19:31,853 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:19:31,855 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:19:31,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:19:31,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:19:31,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:19:31,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:19:31,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:19:31,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:19:31,868 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:19:31,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:19:31,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:19:31,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:19:31,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:19:31,877 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:19:31,877 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:19:31,878 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:19:31,879 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:19:31,880 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:19:31,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:19:31,887 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:19:31,888 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:19:31,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:19:31,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:19:31,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:19:31,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:19:31,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:19:31,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:19:31,894 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:19:31,895 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:19:31,896 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:19:31,922 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:19:31,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:19:31,924 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:19:31,924 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:19:31,925 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:19:31,925 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:19:31,926 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:19:31,926 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:19:31,926 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:19:31,927 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:19:31,927 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:19:31,928 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:19:31,928 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:19:31,928 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:19:31,929 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:19:31,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:19:31,930 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:19:31,931 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:19:31,931 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:19:31,931 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:19:31,931 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:19:31,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:19:31,932 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:19:31,932 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:19:31,932 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:19:31,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:19:31,933 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:19:31,933 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:19:31,933 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:19:31,934 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:19:31,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:19:31,934 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:19:31,934 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:19:31,935 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:19:31,935 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:19:31,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:19:31,935 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:19:31,936 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:19:31,936 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:19:31,936 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_98d587ee-4c7a-453e-a035-e3fa148bcfb6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05bad3204b290e97aeb846ad3dbb6049f2cace286a3dfc4906d20efd3948c7ea [2021-11-07 01:19:32,235 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:19:32,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:19:32,277 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:19:32,278 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:19:32,280 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:19:32,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-11-07 01:19:32,349 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/data/27a3ba756/31bff9e6e1334f34b794fc12546b602b/FLAGe2a727766 [2021-11-07 01:19:32,857 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:19:32,858 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-11-07 01:19:32,865 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/data/27a3ba756/31bff9e6e1334f34b794fc12546b602b/FLAGe2a727766 [2021-11-07 01:19:33,232 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/data/27a3ba756/31bff9e6e1334f34b794fc12546b602b [2021-11-07 01:19:33,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:19:33,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:19:33,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:33,238 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:19:33,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:19:33,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:33" (1/1) ... [2021-11-07 01:19:33,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15abb0da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:33, skipping insertion in model container [2021-11-07 01:19:33,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:33" (1/1) ... [2021-11-07 01:19:33,250 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:19:33,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:19:33,437 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_98d587ee-4c7a-453e-a035-e3fa148bcfb6/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-11-07 01:19:33,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:33,463 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:19:33,500 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_98d587ee-4c7a-453e-a035-e3fa148bcfb6/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-11-07 01:19:33,506 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:33,524 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:19:33,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:33 WrapperNode [2021-11-07 01:19:33,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:33,526 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:19:33,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:19:33,526 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:19:33,534 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:33" (1/1) ... [2021-11-07 01:19:33,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:33" (1/1) ... [2021-11-07 01:19:33,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:19:33,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:19:33,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:19:33,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:19:33,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:33" (1/1) ... [2021-11-07 01:19:33,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:33" (1/1) ... [2021-11-07 01:19:33,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:33" (1/1) ... [2021-11-07 01:19:33,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:33" (1/1) ... [2021-11-07 01:19:33,597 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:33" (1/1) ... [2021-11-07 01:19:33,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:33" (1/1) ... [2021-11-07 01:19:33,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:33" (1/1) ... [2021-11-07 01:19:33,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:19:33,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:19:33,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:19:33,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:19:33,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:33" (1/1) ... [2021-11-07 01:19:33,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:19:33,638 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:19:33,659 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:19:33,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:19:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:19:33,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:19:33,717 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:19:33,717 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:19:33,975 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:19:33,975 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-07 01:19:33,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:33 BoogieIcfgContainer [2021-11-07 01:19:33,978 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:19:33,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:19:33,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:19:33,985 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:19:33,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:19:33" (1/3) ... [2021-11-07 01:19:33,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b71f24b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:19:33, skipping insertion in model container [2021-11-07 01:19:33,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:33" (2/3) ... [2021-11-07 01:19:33,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@b71f24b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:19:33, skipping insertion in model container [2021-11-07 01:19:33,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:33" (3/3) ... [2021-11-07 01:19:33,988 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2021-11-07 01:19:33,994 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:19:33,995 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:19:34,061 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:19:34,082 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 01:19:34,086 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:19:34,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:34,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:19:34,114 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:34,114 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:19:34,115 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:19:34,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:34,121 INFO L85 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2021-11-07 01:19:34,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:34,131 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376425151] [2021-11-07 01:19:34,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:34,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:34,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:19:34,285 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:19:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:19:34,363 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:19:34,367 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:19:34,368 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:19:34,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:19:34,375 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 01:19:34,379 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:19:34,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:19:34 BoogieIcfgContainer [2021-11-07 01:19:34,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:19:34,408 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:19:34,408 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:19:34,408 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:19:34,409 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:33" (3/4) ... [2021-11-07 01:19:34,413 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:19:34,414 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:19:34,419 INFO L168 Benchmark]: Toolchain (without parser) took 1179.61 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 34.6 MB in the beginning and 59.9 MB in the end (delta: -25.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:19:34,420 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 71.3 MB. Free memory is still 50.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:19:34,422 INFO L168 Benchmark]: CACSL2BoogieTranslator took 287.17 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 34.4 MB in the beginning and 64.9 MB in the end (delta: -30.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:34,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.39 ms. Allocated memory is still 86.0 MB. Free memory was 64.9 MB in the beginning and 63.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:34,426 INFO L168 Benchmark]: Boogie Preprocessor took 47.00 ms. Allocated memory is still 86.0 MB. Free memory was 63.2 MB in the beginning and 62.3 MB in the end (delta: 946.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:19:34,428 INFO L168 Benchmark]: RCFGBuilder took 364.75 ms. Allocated memory is still 86.0 MB. Free memory was 62.3 MB in the beginning and 51.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:34,435 INFO L168 Benchmark]: TraceAbstraction took 422.13 ms. Allocated memory is still 86.0 MB. Free memory was 50.7 MB in the beginning and 60.4 MB in the end (delta: -9.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:19:34,438 INFO L168 Benchmark]: Witness Printer took 7.03 ms. Allocated memory is still 86.0 MB. Free memory was 60.4 MB in the beginning and 59.9 MB in the end (delta: 539.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:34,445 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 71.3 MB. Free memory is still 50.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 287.17 ms. Allocated memory was 71.3 MB in the beginning and 86.0 MB in the end (delta: 14.7 MB). Free memory was 34.4 MB in the beginning and 64.9 MB in the end (delta: -30.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.39 ms. Allocated memory is still 86.0 MB. Free memory was 64.9 MB in the beginning and 63.7 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.00 ms. Allocated memory is still 86.0 MB. Free memory was 63.2 MB in the beginning and 62.3 MB in the end (delta: 946.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 364.75 ms. Allocated memory is still 86.0 MB. Free memory was 62.3 MB in the beginning and 51.2 MB in the end (delta: 11.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 422.13 ms. Allocated memory is still 86.0 MB. Free memory was 50.7 MB in the beginning and 60.4 MB in the end (delta: -9.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 7.03 ms. Allocated memory is still 86.0 MB. Free memory was 60.4 MB in the beginning and 59.9 MB in the end (delta: 539.9 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 20. Possible FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 01:19:34,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/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_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/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_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/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_98d587ee-4c7a-453e-a035-e3fa148bcfb6/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 05bad3204b290e97aeb846ad3dbb6049f2cace286a3dfc4906d20efd3948c7ea --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:19:37,260 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:19:37,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:19:37,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:19:37,327 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:19:37,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:19:37,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:19:37,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:19:37,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:19:37,354 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:19:37,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:19:37,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:19:37,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:19:37,363 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:19:37,365 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:19:37,372 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:19:37,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:19:37,376 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:19:37,379 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:19:37,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:19:37,392 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:19:37,394 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:19:37,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:19:37,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:19:37,410 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:19:37,410 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:19:37,411 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:19:37,413 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:19:37,413 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:19:37,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:19:37,415 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:19:37,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:19:37,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:19:37,419 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:19:37,421 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:19:37,421 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:19:37,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:19:37,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:19:37,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:19:37,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:19:37,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:19:37,427 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:19:37,479 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:19:37,479 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:19:37,481 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:19:37,481 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:19:37,481 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:19:37,481 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:19:37,482 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:19:37,482 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:19:37,482 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:19:37,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:19:37,485 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:19:37,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:19:37,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:19:37,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:19:37,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:19:37,486 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:19:37,486 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:19:37,487 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:19:37,487 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:19:37,487 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:19:37,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:19:37,488 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:19:37,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:19:37,488 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:19:37,488 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:19:37,489 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:19:37,489 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:19:37,489 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:19:37,489 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:19:37,490 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:19:37,490 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:19:37,490 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:19:37,490 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:19:37,490 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:19:37,491 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:19:37,491 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_98d587ee-4c7a-453e-a035-e3fa148bcfb6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 05bad3204b290e97aeb846ad3dbb6049f2cace286a3dfc4906d20efd3948c7ea [2021-11-07 01:19:37,987 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:19:38,012 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:19:38,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:19:38,017 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:19:38,018 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:19:38,020 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-11-07 01:19:38,099 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/data/2e35d0c6a/4650f2a8dfc14a62846c0feeb4cb5296/FLAGd080fdf99 [2021-11-07 01:19:38,648 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:19:38,648 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-11-07 01:19:38,658 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/data/2e35d0c6a/4650f2a8dfc14a62846c0feeb4cb5296/FLAGd080fdf99 [2021-11-07 01:19:38,988 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/data/2e35d0c6a/4650f2a8dfc14a62846c0feeb4cb5296 [2021-11-07 01:19:38,991 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:19:38,994 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:19:38,997 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:38,997 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:19:39,002 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:19:39,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:38" (1/1) ... [2021-11-07 01:19:39,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1da36976 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:39, skipping insertion in model container [2021-11-07 01:19:39,004 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:19:38" (1/1) ... [2021-11-07 01:19:39,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:19:39,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:19:39,298 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_98d587ee-4c7a-453e-a035-e3fa148bcfb6/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-11-07 01:19:39,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:39,330 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:19:39,372 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_98d587ee-4c7a-453e-a035-e3fa148bcfb6/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2021-11-07 01:19:39,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:19:39,442 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:19:39,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:39 WrapperNode [2021-11-07 01:19:39,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:19:39,445 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:19:39,445 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:19:39,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:19:39,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:39" (1/1) ... [2021-11-07 01:19:39,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:39" (1/1) ... [2021-11-07 01:19:39,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:19:39,547 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:19:39,547 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:19:39,547 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:19:39,558 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:39" (1/1) ... [2021-11-07 01:19:39,558 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:39" (1/1) ... [2021-11-07 01:19:39,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:39" (1/1) ... [2021-11-07 01:19:39,568 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:39" (1/1) ... [2021-11-07 01:19:39,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:39" (1/1) ... [2021-11-07 01:19:39,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:39" (1/1) ... [2021-11-07 01:19:39,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:39" (1/1) ... [2021-11-07 01:19:39,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:19:39,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:19:39,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:19:39,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:19:39,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:39" (1/1) ... [2021-11-07 01:19:39,623 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:19:39,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:19:39,668 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:19:39,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:19:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:19:39,730 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:19:39,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:19:39,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:19:45,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:19:45,028 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-07 01:19:45,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:45 BoogieIcfgContainer [2021-11-07 01:19:45,030 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:19:45,032 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:19:45,033 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:19:45,036 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:19:45,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:19:38" (1/3) ... [2021-11-07 01:19:45,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57efa6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:19:45, skipping insertion in model container [2021-11-07 01:19:45,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:19:39" (2/3) ... [2021-11-07 01:19:45,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57efa6ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:19:45, skipping insertion in model container [2021-11-07 01:19:45,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:45" (3/3) ... [2021-11-07 01:19:45,040 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2021-11-07 01:19:45,047 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:19:45,047 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:19:45,109 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:19:45,117 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 01:19:45,117 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:19:45,133 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 01:19:45,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:19:45,139 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:45,140 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:45,141 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:19:45,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:45,148 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-11-07 01:19:45,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:19:45,177 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80299659] [2021-11-07 01:19:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:45,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:19:45,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:19:45,188 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:19:45,199 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:19:46,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:46,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:19:46,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:19:46,738 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 01:19:46,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:19:46,824 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 01:19:46,826 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:19:46,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80299659] [2021-11-07 01:19:46,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80299659] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:46,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:46,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:19:46,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547490409] [2021-11-07 01:19:46,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:19:46,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:19:46,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:19:46,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:19:46,863 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 01:19:46,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:46,882 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-11-07 01:19:46,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:19:46,884 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-11-07 01:19:46,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:46,894 INFO L225 Difference]: With dead ends: 23 [2021-11-07 01:19:46,895 INFO L226 Difference]: Without dead ends: 9 [2021-11-07 01:19:46,898 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 01:19:46,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-07 01:19:46,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-07 01:19:46,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 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 01:19:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-11-07 01:19:46,938 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-11-07 01:19:46,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:46,938 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-11-07 01:19:46,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 01:19:46,939 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-11-07 01:19:46,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:19:46,940 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:46,941 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:46,985 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:19:47,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:19:47,170 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:19:47,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:47,171 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-11-07 01:19:47,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:19:47,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2105327731] [2021-11-07 01:19:47,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:47,178 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:19:47,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:19:47,180 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:19:47,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:19:50,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:19:50,922 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:19:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:19:56,903 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 01:19:56,904 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:19:56,906 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:19:56,950 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:19:57,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:19:57,111 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 01:19:57,114 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:19:57,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:19:57 BoogieIcfgContainer [2021-11-07 01:19:57,138 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:19:57,139 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:19:57,139 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:19:57,139 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:19:57,140 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:19:45" (3/4) ... [2021-11-07 01:19:57,142 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:19:57,180 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:19:57,180 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:19:57,183 INFO L168 Benchmark]: Toolchain (without parser) took 18187.75 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 45.5 MB in the beginning and 51.9 MB in the end (delta: -6.5 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:57,183 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 65.0 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:19:57,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 446.77 ms. Allocated memory is still 65.0 MB. Free memory was 45.2 MB in the beginning and 49.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:57,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.75 ms. Allocated memory is still 65.0 MB. Free memory was 49.1 MB in the beginning and 47.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:57,185 INFO L168 Benchmark]: Boogie Preprocessor took 64.07 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 46.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:19:57,186 INFO L168 Benchmark]: RCFGBuilder took 5418.69 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 37.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:57,186 INFO L168 Benchmark]: TraceAbstraction took 12105.50 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 36.6 MB in the beginning and 53.7 MB in the end (delta: -17.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:57,187 INFO L168 Benchmark]: Witness Printer took 41.99 ms. Allocated memory is still 88.1 MB. Free memory was 53.7 MB in the beginning and 51.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:19:57,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 65.0 MB. Free memory is still 47.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 446.77 ms. Allocated memory is still 65.0 MB. Free memory was 45.2 MB in the beginning and 49.3 MB in the end (delta: -4.1 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.75 ms. Allocated memory is still 65.0 MB. Free memory was 49.1 MB in the beginning and 47.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 64.07 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 46.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 5418.69 ms. Allocated memory is still 65.0 MB. Free memory was 46.3 MB in the beginning and 37.0 MB in the end (delta: 9.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 12105.50 ms. Allocated memory was 65.0 MB in the beginning and 88.1 MB in the end (delta: 23.1 MB). Free memory was 36.6 MB in the beginning and 53.7 MB in the end (delta: -17.1 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * Witness Printer took 41.99 ms. Allocated memory is still 88.1 MB. Free memory was 53.7 MB in the beginning and 51.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 12.0s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 4.9s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 01:19:57,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_98d587ee-4c7a-453e-a035-e3fa148bcfb6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE