./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba .................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba ................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:44:28,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:44:28,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:44:28,288 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:44:28,289 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:44:28,295 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:44:28,297 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:44:28,303 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:44:28,306 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:44:28,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:44:28,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:44:28,318 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:44:28,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:44:28,323 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:44:28,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:44:28,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:44:28,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:44:28,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:44:28,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:44:28,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:44:28,353 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:44:28,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:44:28,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:44:28,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:44:28,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:44:28,376 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:44:28,377 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:44:28,379 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:44:28,380 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:44:28,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:44:28,383 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:44:28,384 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:44:28,387 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:44:28,389 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:44:28,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:44:28,392 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:44:28,393 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:44:28,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:44:28,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:44:28,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:44:28,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:44:28,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:44:28,467 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:44:28,467 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:44:28,469 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:44:28,470 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:44:28,470 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:44:28,470 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:44:28,471 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:44:28,471 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:44:28,479 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:44:28,480 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:44:28,481 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:44:28,482 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:44:28,482 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:44:28,483 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:44:28,483 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:44:28,484 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:44:28,485 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:44:28,485 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:44:28,485 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:44:28,486 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:44:28,486 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:44:28,486 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:44:28,487 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:44:28,487 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:44:28,487 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:44:28,487 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:44:28,488 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:44:28,488 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:44:28,489 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:44:28,491 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:44:28,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:44:28,506 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:44:28,506 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:44:28,506 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:44:28,507 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:44:28,507 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:44:28,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:44:28,507 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:44:28,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:44:28,507 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_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba [2021-10-29 05:44:28,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:44:28,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:44:28,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:44:28,885 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:44:28,886 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:44:28,887 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-29 05:44:28,989 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/data/9da7f727f/b3dfedae31a4450e8388c3a45c0b2f4e/FLAGa63c38247 [2021-10-29 05:44:29,695 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:44:29,696 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-29 05:44:29,709 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/data/9da7f727f/b3dfedae31a4450e8388c3a45c0b2f4e/FLAGa63c38247 [2021-10-29 05:44:29,969 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/data/9da7f727f/b3dfedae31a4450e8388c3a45c0b2f4e [2021-10-29 05:44:29,973 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:44:29,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:44:29,979 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:44:29,980 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:44:29,985 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:44:29,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:44:29" (1/1) ... [2021-10-29 05:44:29,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@443b77c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:29, skipping insertion in model container [2021-10-29 05:44:29,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:44:29" (1/1) ... [2021-10-29 05:44:29,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:44:30,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:44:30,206 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_4d56af50-dd83-4cb8-be6c-a8c2321345e8/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-29 05:44:30,209 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:44:30,218 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:44:30,238 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_4d56af50-dd83-4cb8-be6c-a8c2321345e8/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-29 05:44:30,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:44:30,254 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:44:30,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:30 WrapperNode [2021-10-29 05:44:30,255 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:44:30,256 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:44:30,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:44:30,257 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:44:30,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:30" (1/1) ... [2021-10-29 05:44:30,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:30" (1/1) ... [2021-10-29 05:44:30,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:44:30,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:44:30,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:44:30,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:44:30,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:30" (1/1) ... [2021-10-29 05:44:30,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:30" (1/1) ... [2021-10-29 05:44:30,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:30" (1/1) ... [2021-10-29 05:44:30,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:30" (1/1) ... [2021-10-29 05:44:30,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:30" (1/1) ... [2021-10-29 05:44:30,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:30" (1/1) ... [2021-10-29 05:44:30,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:30" (1/1) ... [2021-10-29 05:44:30,319 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:44:30,320 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:44:30,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:44:30,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:44:30,325 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:30" (1/1) ... [2021-10-29 05:44:30,333 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:44:30,343 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:44:30,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:44:30,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:44:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:44:30,412 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:44:30,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:44:30,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:44:30,763 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:44:30,764 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 05:44:30,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:44:30 BoogieIcfgContainer [2021-10-29 05:44:30,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:44:30,769 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:44:30,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:44:30,788 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:44:30,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:44:29" (1/3) ... [2021-10-29 05:44:30,789 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee2792a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:44:30, skipping insertion in model container [2021-10-29 05:44:30,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:30" (2/3) ... [2021-10-29 05:44:30,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee2792a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:44:30, skipping insertion in model container [2021-10-29 05:44:30,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:44:30" (3/3) ... [2021-10-29 05:44:30,792 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-10-29 05:44:30,798 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:44:30,798 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:44:30,852 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:44:30,860 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:44:30,860 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:44:30,890 INFO L276 IsEmpty]: Start isEmpty. Operand has 6 states, 4 states have (on average 1.5) internal successors, (6), 5 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:44:30,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-29 05:44:30,895 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:30,896 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-29 05:44:30,897 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:44:30,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:30,918 INFO L85 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2021-10-29 05:44:30,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:44:30,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309561007] [2021-10-29 05:44:30,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:30,943 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:44:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:44:31,107 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:44:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:44:31,147 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-10-29 05:44:31,150 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:44:31,151 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:44:31,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:44:31,159 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-10-29 05:44:31,162 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:44:31,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:44:31 BoogieIcfgContainer [2021-10-29 05:44:31,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:44:31,182 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:44:31,182 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:44:31,183 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:44:31,183 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:44:30" (3/4) ... [2021-10-29 05:44:31,187 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-29 05:44:31,187 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:44:31,190 INFO L168 Benchmark]: Toolchain (without parser) took 1213.27 ms. Allocated memory is still 117.4 MB. Free memory was 93.9 MB in the beginning and 89.3 MB in the end (delta: 4.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:44:31,191 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 57.7 MB in the beginning and 57.7 MB in the end (delta: 40.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:44:31,192 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.21 ms. Allocated memory is still 117.4 MB. Free memory was 93.8 MB in the beginning and 83.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:44:31,192 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.52 ms. Allocated memory is still 117.4 MB. Free memory was 83.6 MB in the beginning and 82.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:44:31,193 INFO L168 Benchmark]: Boogie Preprocessor took 29.33 ms. Allocated memory is still 117.4 MB. Free memory was 82.1 MB in the beginning and 81.1 MB in the end (delta: 985.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:44:31,194 INFO L168 Benchmark]: RCFGBuilder took 446.95 ms. Allocated memory is still 117.4 MB. Free memory was 81.1 MB in the beginning and 69.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:44:31,195 INFO L168 Benchmark]: TraceAbstraction took 412.69 ms. Allocated memory is still 117.4 MB. Free memory was 69.4 MB in the beginning and 89.7 MB in the end (delta: -20.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:44:31,196 INFO L168 Benchmark]: Witness Printer took 5.28 ms. Allocated memory is still 117.4 MB. Free memory was 89.7 MB in the beginning and 89.3 MB in the end (delta: 377.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:44:31,200 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 86.0 MB. Free memory was 57.7 MB in the beginning and 57.7 MB in the end (delta: 40.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 276.21 ms. Allocated memory is still 117.4 MB. Free memory was 93.8 MB in the beginning and 83.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.52 ms. Allocated memory is still 117.4 MB. Free memory was 83.6 MB in the beginning and 82.1 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.33 ms. Allocated memory is still 117.4 MB. Free memory was 82.1 MB in the beginning and 81.1 MB in the end (delta: 985.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 446.95 ms. Allocated memory is still 117.4 MB. Free memory was 81.1 MB in the beginning and 69.9 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 412.69 ms. Allocated memory is still 117.4 MB. Free memory was 69.4 MB in the beginning and 89.7 MB in the end (delta: -20.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 5.28 ms. Allocated memory is still 117.4 MB. Free memory was 89.7 MB in the beginning and 89.3 MB in the end (delta: 377.4 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: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 3 NumberOfCodeBlocks, 3 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-10-29 05:44:31,255 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:44:34,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:44:34,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:44:34,491 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:44:34,492 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:44:34,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:44:34,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:44:34,510 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:44:34,515 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:44:34,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:44:34,531 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:44:34,534 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:44:34,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:44:34,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:44:34,541 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:44:34,545 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:44:34,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:44:34,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:44:34,556 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:44:34,562 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:44:34,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:44:34,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:44:34,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:44:34,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:44:34,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:44:34,587 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:44:34,587 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:44:34,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:44:34,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:44:34,593 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:44:34,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:44:34,595 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:44:34,597 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:44:34,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:44:34,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:44:34,601 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:44:34,602 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:44:34,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:44:34,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:44:34,606 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:44:34,607 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:44:34,608 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-10-29 05:44:34,667 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:44:34,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:44:34,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:44:34,670 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:44:34,671 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:44:34,671 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:44:34,671 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:44:34,671 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:44:34,672 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:44:34,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:44:34,675 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:44:34,676 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:44:34,676 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:44:34,676 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:44:34,676 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:44:34,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:44:34,677 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:44:34,677 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-10-29 05:44:34,678 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-10-29 05:44:34,678 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:44:34,678 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:44:34,678 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:44:34,679 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:44:34,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:44:34,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-29 05:44:34,680 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:44:34,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:44:34,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:44:34,681 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:44:34,681 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:44:34,681 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-10-29 05:44:34,681 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-10-29 05:44:34,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:44:34,682 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:44:34,683 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:44:34,683 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_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc07c93ca8abe406666d29897bd5ae1cab337b01e72b917d10844b81295ca7ba [2021-10-29 05:44:35,175 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:44:35,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:44:35,226 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:44:35,228 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:44:35,229 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:44:35,230 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-29 05:44:35,324 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/data/333c2a681/020216a3d3224ba2aac612285267b435/FLAGa0e8b2ad2 [2021-10-29 05:44:36,040 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:44:36,040 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2021-10-29 05:44:36,048 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/data/333c2a681/020216a3d3224ba2aac612285267b435/FLAGa0e8b2ad2 [2021-10-29 05:44:36,391 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/data/333c2a681/020216a3d3224ba2aac612285267b435 [2021-10-29 05:44:36,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:44:36,400 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:44:36,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:44:36,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:44:36,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:44:36,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:44:36" (1/1) ... [2021-10-29 05:44:36,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630f3a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:36, skipping insertion in model container [2021-10-29 05:44:36,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:44:36" (1/1) ... [2021-10-29 05:44:36,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:44:36,438 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:44:36,645 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_4d56af50-dd83-4cb8-be6c-a8c2321345e8/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-29 05:44:36,648 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:44:36,664 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:44:36,690 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_4d56af50-dd83-4cb8-be6c-a8c2321345e8/sv-benchmarks/c/floats-cdfpl/newton_1_4.i[1224,1237] [2021-10-29 05:44:36,691 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:44:36,709 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:44:36,709 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:36 WrapperNode [2021-10-29 05:44:36,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:44:36,711 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:44:36,712 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:44:36,712 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:44:36,722 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:36" (1/1) ... [2021-10-29 05:44:36,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:36" (1/1) ... [2021-10-29 05:44:36,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:44:36,761 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:44:36,761 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:44:36,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:44:36,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:36" (1/1) ... [2021-10-29 05:44:36,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:36" (1/1) ... [2021-10-29 05:44:36,778 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:36" (1/1) ... [2021-10-29 05:44:36,778 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:36" (1/1) ... [2021-10-29 05:44:36,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:36" (1/1) ... [2021-10-29 05:44:36,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:36" (1/1) ... [2021-10-29 05:44:36,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:36" (1/1) ... [2021-10-29 05:44:36,798 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:44:36,799 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:44:36,799 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:44:36,799 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:44:36,801 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:36" (1/1) ... [2021-10-29 05:44:36,810 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:44:36,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:44:36,852 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:44:36,873 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:44:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-10-29 05:44:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:44:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:44:36,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:44:44,102 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:44:44,102 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-10-29 05:44:44,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:44:44 BoogieIcfgContainer [2021-10-29 05:44:44,105 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:44:44,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:44:44,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:44:44,111 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:44:44,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:44:36" (1/3) ... [2021-10-29 05:44:44,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d62d496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:44:44, skipping insertion in model container [2021-10-29 05:44:44,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:44:36" (2/3) ... [2021-10-29 05:44:44,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d62d496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:44:44, skipping insertion in model container [2021-10-29 05:44:44,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:44:44" (3/3) ... [2021-10-29 05:44:44,116 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2021-10-29 05:44:44,122 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:44:44,122 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-29 05:44:44,186 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:44:44,194 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-29 05:44:44,194 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-29 05:44:44,214 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) [2021-10-29 05:44:44,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:44:44,220 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:44,221 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:44:44,222 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:44:44,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:44,236 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-10-29 05:44:44,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:44:44,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2107242139] [2021-10-29 05:44:44,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:44,266 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:44:44,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:44:44,273 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:44:44,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-10-29 05:44:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:44:45,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-29 05:44:45,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-29 05:44:45,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:45,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-29 05:44:45,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:44:45,866 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-10-29 05:44:45,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2107242139] [2021-10-29 05:44:45,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2107242139] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-29 05:44:45,867 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:44:45,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-29 05:44:45,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060341801] [2021-10-29 05:44:45,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-29 05:44:45,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-10-29 05:44:45,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-29 05:44:45,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-29 05:44:45,893 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) [2021-10-29 05:44:45,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:44:45,908 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-10-29 05:44:45,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-29 05:44:45,909 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 [2021-10-29 05:44:45,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:44:45,922 INFO L225 Difference]: With dead ends: 23 [2021-10-29 05:44:45,922 INFO L226 Difference]: Without dead ends: 9 [2021-10-29 05:44:45,925 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 [2021-10-29 05:44:45,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-29 05:44:45,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-29 05:44:45,958 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) [2021-10-29 05:44:45,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-10-29 05:44:45,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-10-29 05:44:45,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:44:45,961 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-10-29 05:44:45,961 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) [2021-10-29 05:44:45,962 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-10-29 05:44:45,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:44:45,962 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:44:45,963 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:44:46,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-10-29 05:44:46,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:44:46,177 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-29 05:44:46,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:44:46,178 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-10-29 05:44:46,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-10-29 05:44:46,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1105640123] [2021-10-29 05:44:46,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:44:46,180 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-10-29 05:44:46,180 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/mathsat [2021-10-29 05:44:46,182 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-10-29 05:44:46,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-10-29 05:45:50,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:45:50,833 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-29 05:45:54,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-29 05:45:55,089 INFO L133 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2021-10-29 05:45:55,089 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-29 05:45:55,091 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:45:55,154 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-10-29 05:45:55,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/mathsat -unsat_core_generation=3 [2021-10-29 05:45:55,297 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1] [2021-10-29 05:45:55,299 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:45:55,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:45:55 BoogieIcfgContainer [2021-10-29 05:45:55,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:45:55,319 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:45:55,320 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:45:55,320 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:45:55,320 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:44:44" (3/4) ... [2021-10-29 05:45:55,323 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-29 05:45:55,387 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:45:55,388 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:45:55,395 INFO L168 Benchmark]: Toolchain (without parser) took 78989.75 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 27.1 MB in the beginning and 35.4 MB in the end (delta: -8.3 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:55,399 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 50.3 MB. Free memory was 31.8 MB in the beginning and 31.7 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:45:55,399 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.56 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 29.7 MB in the end (delta: -2.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:55,401 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.65 ms. Allocated memory is still 50.3 MB. Free memory was 29.7 MB in the beginning and 28.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:55,402 INFO L168 Benchmark]: Boogie Preprocessor took 37.21 ms. Allocated memory is still 50.3 MB. Free memory was 28.1 MB in the beginning and 26.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:45:55,403 INFO L168 Benchmark]: RCFGBuilder took 7306.38 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 26.8 MB in the beginning and 45.0 MB in the end (delta: -18.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:55,404 INFO L168 Benchmark]: TraceAbstraction took 71211.37 ms. Allocated memory is still 67.1 MB. Free memory was 44.5 MB in the beginning and 37.2 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:55,405 INFO L168 Benchmark]: Witness Printer took 68.75 ms. Allocated memory is still 67.1 MB. Free memory was 37.2 MB in the beginning and 35.4 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:45:55,412 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 50.3 MB. Free memory was 31.8 MB in the beginning and 31.7 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 308.56 ms. Allocated memory is still 50.3 MB. Free memory was 26.9 MB in the beginning and 29.7 MB in the end (delta: -2.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.65 ms. Allocated memory is still 50.3 MB. Free memory was 29.7 MB in the beginning and 28.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 37.21 ms. Allocated memory is still 50.3 MB. Free memory was 28.1 MB in the beginning and 26.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 7306.38 ms. Allocated memory was 50.3 MB in the beginning and 67.1 MB in the end (delta: 16.8 MB). Free memory was 26.8 MB in the beginning and 45.0 MB in the end (delta: -18.2 MB). Peak memory consumption was 8.1 MB. Max. memory is 16.1 GB. * TraceAbstraction took 71211.37 ms. Allocated memory is still 67.1 MB. Free memory was 44.5 MB in the beginning and 37.2 MB in the end (delta: 7.3 MB). Peak memory consumption was 6.8 MB. Max. memory is 16.1 GB. * Witness Printer took 68.75 ms. Allocated memory is still 67.1 MB. Free memory was 37.2 MB in the beginning and 35.4 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: 71.1s, 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, 65.8s 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! [2021-10-29 05:45:55,556 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4d56af50-dd83-4cb8-be6c-a8c2321345e8/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...