./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.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_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/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_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/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_9d4d4c9b-67a5-485d-bc9e-180501213e78/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 dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:44:44,140 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:44:44,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:44:44,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:44:44,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:44:44,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:44:44,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:44:44,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:44:44,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:44:44,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:44:44,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:44:44,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:44:44,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:44:44,198 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:44:44,200 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:44:44,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:44:44,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:44:44,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:44:44,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:44:44,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:44:44,214 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:44:44,216 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:44:44,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:44:44,219 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:44:44,224 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:44:44,225 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:44:44,225 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:44:44,227 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:44:44,228 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:44:44,229 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:44:44,230 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:44:44,231 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:44:44,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:44:44,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:44:44,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:44:44,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:44:44,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:44:44,237 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:44:44,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:44:44,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:44:44,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:44:44,242 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:44:44,273 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:44:44,274 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:44:44,275 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:44:44,275 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:44:44,276 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:44:44,276 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:44:44,277 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:44:44,277 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:44:44,278 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:44:44,278 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:44:44,279 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:44:44,279 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:44:44,280 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:44:44,280 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:44:44,280 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:44:44,282 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:44:44,282 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:44:44,282 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:44:44,283 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:44:44,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:44:44,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:44:44,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:44:44,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:44:44,285 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:44:44,285 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:44:44,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:44:44,285 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:44:44,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:44:44,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:44:44,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:44:44,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:44:44,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:44:44,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:44:44,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:44:44,288 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:44:44,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:44:44,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:44:44,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:44:44,289 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:44:44,289 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_9d4d4c9b-67a5-485d-bc9e-180501213e78/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba [2021-11-07 01:44:44,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:44:44,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:44:44,642 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:44:44,644 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:44:44,645 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:44:44,646 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-11-07 01:44:44,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/data/24d0ac8eb/a8b3f1ea075f4447b1090fd64098253a/FLAGa4b0f01ff [2021-11-07 01:44:45,290 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:44:45,291 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-11-07 01:44:45,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/data/24d0ac8eb/a8b3f1ea075f4447b1090fd64098253a/FLAGa4b0f01ff [2021-11-07 01:44:45,631 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/data/24d0ac8eb/a8b3f1ea075f4447b1090fd64098253a [2021-11-07 01:44:45,634 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:44:45,636 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:44:45,640 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:44:45,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:44:45,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:44:45,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:44:45" (1/1) ... [2021-11-07 01:44:45,647 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31796bd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:45, skipping insertion in model container [2021-11-07 01:44:45,647 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:44:45" (1/1) ... [2021-11-07 01:44:45,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:44:45,675 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:44:45,926 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_9d4d4c9b-67a5-485d-bc9e-180501213e78/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-11-07 01:44:45,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:44:45,940 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:44:45,964 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_9d4d4c9b-67a5-485d-bc9e-180501213e78/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-11-07 01:44:45,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:44:45,981 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:44:45,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:45 WrapperNode [2021-11-07 01:44:45,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:44:45,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:44:45,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:44:45,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:44:45,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:45" (1/1) ... [2021-11-07 01:44:46,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:45" (1/1) ... [2021-11-07 01:44:46,033 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:44:46,034 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:44:46,035 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:44:46,035 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:44:46,045 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:45" (1/1) ... [2021-11-07 01:44:46,046 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:45" (1/1) ... [2021-11-07 01:44:46,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:45" (1/1) ... [2021-11-07 01:44:46,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:45" (1/1) ... [2021-11-07 01:44:46,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:45" (1/1) ... [2021-11-07 01:44:46,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:45" (1/1) ... [2021-11-07 01:44:46,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:45" (1/1) ... [2021-11-07 01:44:46,086 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:44:46,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:44:46,088 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:44:46,088 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:44:46,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:45" (1/1) ... [2021-11-07 01:44:46,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:44:46,115 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:44:46,133 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:44:46,161 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:44:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:44:46,198 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:44:46,200 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:44:46,200 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:44:46,618 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:44:46,619 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-07 01:44:46,621 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:44:46 BoogieIcfgContainer [2021-11-07 01:44:46,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:44:46,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:44:46,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:44:46,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:44:46,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:44:45" (1/3) ... [2021-11-07 01:44:46,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46985a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:44:46, skipping insertion in model container [2021-11-07 01:44:46,630 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:45" (2/3) ... [2021-11-07 01:44:46,630 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46985a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:44:46, skipping insertion in model container [2021-11-07 01:44:46,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:44:46" (3/3) ... [2021-11-07 01:44:46,632 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-11-07 01:44:46,639 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:44:46,639 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:44:46,697 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:44:46,705 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 01:44:46,706 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:44:46,722 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 01:44:46,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-11-07 01:44:46,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:44:46,729 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-11-07 01:44:46,730 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:44:46,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:44:46,737 INFO L85 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2021-11-07 01:44:46,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:44:46,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653719855] [2021-11-07 01:44:46,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:44:46,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:44:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:44:46,869 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:44:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:44:46,917 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:44:46,920 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:44:46,922 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:44:46,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:44:46,929 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 01:44:46,933 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:44:46,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:44:46 BoogieIcfgContainer [2021-11-07 01:44:46,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:44:46,954 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:44:46,954 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:44:46,954 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:44:46,955 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:44:46" (3/4) ... [2021-11-07 01:44:46,959 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:44:46,959 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:44:46,962 INFO L168 Benchmark]: Toolchain (without parser) took 1324.10 ms. Allocated memory is still 115.3 MB. Free memory was 77.6 MB in the beginning and 62.0 MB in the end (delta: 15.6 MB). Peak memory consumption was 14.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:44:46,963 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 115.3 MB. Free memory was 93.7 MB in the beginning and 93.6 MB in the end (delta: 69.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:44:46,964 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.41 ms. Allocated memory is still 115.3 MB. Free memory was 77.4 MB in the beginning and 89.5 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:44:46,965 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.91 ms. Allocated memory is still 115.3 MB. Free memory was 89.5 MB in the beginning and 88.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:44:46,966 INFO L168 Benchmark]: Boogie Preprocessor took 51.81 ms. Allocated memory is still 115.3 MB. Free memory was 88.1 MB in the beginning and 86.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:44:46,967 INFO L168 Benchmark]: RCFGBuilder took 534.71 ms. Allocated memory is still 115.3 MB. Free memory was 86.9 MB in the beginning and 75.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:44:46,967 INFO L168 Benchmark]: TraceAbstraction took 329.23 ms. Allocated memory is still 115.3 MB. Free memory was 75.0 MB in the beginning and 62.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-11-07 01:44:46,968 INFO L168 Benchmark]: Witness Printer took 5.76 ms. Allocated memory is still 115.3 MB. Free memory was 62.4 MB in the beginning and 62.0 MB in the end (delta: 346.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:44:46,973 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 115.3 MB. Free memory was 93.7 MB in the beginning and 93.6 MB in the end (delta: 69.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 342.41 ms. Allocated memory is still 115.3 MB. Free memory was 77.4 MB in the beginning and 89.5 MB in the end (delta: -12.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.91 ms. Allocated memory is still 115.3 MB. Free memory was 89.5 MB in the beginning and 88.1 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 51.81 ms. Allocated memory is still 115.3 MB. Free memory was 88.1 MB in the beginning and 86.9 MB in the end (delta: 1.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 534.71 ms. Allocated memory is still 115.3 MB. Free memory was 86.9 MB in the beginning and 75.7 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 329.23 ms. Allocated memory is still 115.3 MB. Free memory was 75.0 MB in the beginning and 62.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Witness Printer took 5.76 ms. Allocated memory is still 115.3 MB. Free memory was 62.4 MB in the beginning and 62.0 MB in the end (delta: 346.7 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: 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: 0.2s, 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=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 01:44:47,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/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_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/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_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/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_9d4d4c9b-67a5-485d-bc9e-180501213e78/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 dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:44:49,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:44:49,935 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:44:49,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:44:49,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:44:49,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:44:49,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:44:50,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:44:50,010 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:44:50,023 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:44:50,025 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:44:50,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:44:50,026 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:44:50,028 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:44:50,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:44:50,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:44:50,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:44:50,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:44:50,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:44:50,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:44:50,044 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:44:50,046 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:44:50,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:44:50,049 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:44:50,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:44:50,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:44:50,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:44:50,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:44:50,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:44:50,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:44:50,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:44:50,061 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:44:50,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:44:50,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:44:50,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:44:50,066 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:44:50,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:44:50,068 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:44:50,068 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:44:50,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:44:50,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:44:50,072 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:44:50,118 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:44:50,120 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:44:50,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:44:50,124 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:44:50,124 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:44:50,125 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:44:50,125 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:44:50,125 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:44:50,126 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:44:50,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:44:50,129 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:44:50,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:44:50,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:44:50,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:44:50,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:44:50,131 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:44:50,131 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:44:50,131 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:44:50,131 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:44:50,132 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:44:50,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:44:50,132 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:44:50,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:44:50,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:44:50,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:44:50,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:44:50,134 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:44:50,134 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:44:50,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:44:50,135 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:44:50,135 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:44:50,135 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:44:50,135 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:44:50,136 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:44:50,136 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:44:50,136 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_9d4d4c9b-67a5-485d-bc9e-180501213e78/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba [2021-11-07 01:44:50,608 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:44:50,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:44:50,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:44:50,658 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:44:50,659 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:44:50,663 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-11-07 01:44:50,754 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/data/2e6cb7f99/33a01d5c1a344024a1fb04c672386cdc/FLAG4dd8ef1b7 [2021-11-07 01:44:51,342 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:44:51,343 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-11-07 01:44:51,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/data/2e6cb7f99/33a01d5c1a344024a1fb04c672386cdc/FLAG4dd8ef1b7 [2021-11-07 01:44:51,664 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/data/2e6cb7f99/33a01d5c1a344024a1fb04c672386cdc [2021-11-07 01:44:51,667 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:44:51,669 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:44:51,671 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:44:51,671 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:44:51,675 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:44:51,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:44:51" (1/1) ... [2021-11-07 01:44:51,678 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68751476 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:51, skipping insertion in model container [2021-11-07 01:44:51,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:44:51" (1/1) ... [2021-11-07 01:44:51,701 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:44:51,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:44:51,991 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_9d4d4c9b-67a5-485d-bc9e-180501213e78/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-11-07 01:44:51,997 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:44:52,017 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:44:52,111 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_9d4d4c9b-67a5-485d-bc9e-180501213e78/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-11-07 01:44:52,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:44:52,142 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:44:52,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:52 WrapperNode [2021-11-07 01:44:52,143 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:44:52,144 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:44:52,145 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:44:52,145 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:44:52,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:52" (1/1) ... [2021-11-07 01:44:52,183 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:52" (1/1) ... [2021-11-07 01:44:52,216 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:44:52,218 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:44:52,218 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:44:52,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:44:52,228 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:52" (1/1) ... [2021-11-07 01:44:52,229 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:52" (1/1) ... [2021-11-07 01:44:52,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:52" (1/1) ... [2021-11-07 01:44:52,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:52" (1/1) ... [2021-11-07 01:44:52,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:52" (1/1) ... [2021-11-07 01:44:52,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:52" (1/1) ... [2021-11-07 01:44:52,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:52" (1/1) ... [2021-11-07 01:44:52,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:44:52,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:44:52,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:44:52,274 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:44:52,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:52" (1/1) ... [2021-11-07 01:44:52,283 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:44:52,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:44:52,309 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:44:52,329 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:44:52,366 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:44:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:44:52,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:44:52,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:44:57,835 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:44:57,836 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-11-07 01:44:57,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:44:57 BoogieIcfgContainer [2021-11-07 01:44:57,839 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:44:57,841 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:44:57,841 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:44:57,845 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:44:57,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:44:51" (1/3) ... [2021-11-07 01:44:57,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68745d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:44:57, skipping insertion in model container [2021-11-07 01:44:57,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:44:52" (2/3) ... [2021-11-07 01:44:57,848 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68745d3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:44:57, skipping insertion in model container [2021-11-07 01:44:57,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:44:57" (3/3) ... [2021-11-07 01:44:57,850 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-11-07 01:44:57,857 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:44:57,857 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:44:57,930 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:44:57,949 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 01:44:57,949 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:44:57,966 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 01:44:57,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:44:57,973 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:44:57,974 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:44:57,975 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:44:57,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:44:57,983 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-11-07 01:44:57,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:44:57,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1812141789] [2021-11-07 01:44:57,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:44:58,016 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:44:58,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:44:58,020 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:44:58,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:44:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:44:59,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 01:44:59,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:44:59,622 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 01:44:59,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:44:59,690 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 01:44:59,691 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:44:59,692 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1812141789] [2021-11-07 01:44:59,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1812141789] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:44:59,693 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:44:59,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 01:44:59,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371275463] [2021-11-07 01:44:59,701 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 01:44:59,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:44:59,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 01:44:59,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 01:44:59,721 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 01:44:59,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:44:59,738 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-11-07 01:44:59,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 01:44:59,740 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 01:44:59,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:44:59,749 INFO L225 Difference]: With dead ends: 23 [2021-11-07 01:44:59,750 INFO L226 Difference]: Without dead ends: 9 [2021-11-07 01:44:59,753 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 01:44:59,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-11-07 01:44:59,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-11-07 01:44:59,782 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 01:44:59,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-11-07 01:44:59,785 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-11-07 01:44:59,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:44:59,786 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-11-07 01:44:59,786 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 01:44:59,786 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-11-07 01:44:59,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-11-07 01:44:59,787 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:44:59,787 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:44:59,827 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:45:00,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:45:00,004 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:45:00,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:45:00,005 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-11-07 01:45:00,006 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:45:00,006 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [709290302] [2021-11-07 01:45:00,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:45:00,007 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:45:00,007 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:45:00,016 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:45:00,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 01:46:01,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:46:01,798 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:46:05,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:46:06,082 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-11-07 01:46:06,082 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:46:06,084 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:46:06,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 01:46:06,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 01:46:06,289 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-11-07 01:46:06,292 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:46:06,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:46:06 BoogieIcfgContainer [2021-11-07 01:46:06,315 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:46:06,316 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:46:06,316 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:46:06,316 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:46:06,317 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:44:57" (3/4) ... [2021-11-07 01:46:06,324 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 01:46:06,364 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:46:06,367 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:46:06,369 INFO L168 Benchmark]: Toolchain (without parser) took 74699.66 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 31.5 MB in the beginning and 39.2 MB in the end (delta: -7.7 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:46:06,370 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:46:06,370 INFO L168 Benchmark]: CACSL2BoogieTranslator took 472.66 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 31.3 MB in the beginning and 58.1 MB in the end (delta: -26.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:46:06,371 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.20 ms. Allocated memory is still 75.5 MB. Free memory was 57.9 MB in the beginning and 56.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:46:06,371 INFO L168 Benchmark]: Boogie Preprocessor took 55.16 ms. Allocated memory is still 75.5 MB. Free memory was 56.5 MB in the beginning and 55.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:46:06,372 INFO L168 Benchmark]: RCFGBuilder took 5564.92 ms. Allocated memory is still 75.5 MB. Free memory was 55.1 MB in the beginning and 45.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:46:06,373 INFO L168 Benchmark]: TraceAbstraction took 68474.15 ms. Allocated memory is still 75.5 MB. Free memory was 45.4 MB in the beginning and 41.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:46:06,373 INFO L168 Benchmark]: Witness Printer took 51.45 ms. Allocated memory is still 75.5 MB. Free memory was 40.9 MB in the beginning and 39.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:46:06,377 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 54.5 MB. Free memory was 36.2 MB in the beginning and 36.2 MB in the end (delta: 38.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 472.66 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 31.3 MB in the beginning and 58.1 MB in the end (delta: -26.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.20 ms. Allocated memory is still 75.5 MB. Free memory was 57.9 MB in the beginning and 56.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 55.16 ms. Allocated memory is still 75.5 MB. Free memory was 56.5 MB in the beginning and 55.1 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 5564.92 ms. Allocated memory is still 75.5 MB. Free memory was 55.1 MB in the beginning and 45.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 68474.15 ms. Allocated memory is still 75.5 MB. Free memory was 45.4 MB in the beginning and 41.3 MB in the end (delta: 4.2 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * Witness Printer took 51.45 ms. Allocated memory is still 75.5 MB. Free memory was 40.9 MB in the beginning and 39.2 MB in the end (delta: 1.7 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: 68.3s, 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, 63.0s 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 01:46:06,542 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9d4d4c9b-67a5-485d-bc9e-180501213e78/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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE