./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 f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80e6cba3a638c96413a46f146860cf66cd7d52ab .................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 80e6cba3a638c96413a46f146860cf66cd7d52ab .................................................................................................................................................................................................................................... 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 0.1.25-f470102 [2019-12-07 21:58:41,700 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:58:41,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:58:41,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:58:41,709 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:58:41,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:58:41,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:58:41,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:58:41,713 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:58:41,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:58:41,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:58:41,715 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:58:41,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:58:41,716 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:58:41,716 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:58:41,717 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:58:41,718 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:58:41,718 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:58:41,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:58:41,722 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:58:41,723 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:58:41,724 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:58:41,724 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:58:41,725 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:58:41,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:58:41,727 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:58:41,727 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:58:41,728 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:58:41,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:58:41,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:58:41,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:58:41,729 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:58:41,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:58:41,730 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:58:41,730 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:58:41,730 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:58:41,731 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:58:41,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:58:41,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:58:41,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:58:41,732 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:58:41,732 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-12-07 21:58:41,742 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:58:41,742 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:58:41,743 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:58:41,743 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:58:41,743 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:58:41,743 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:58:41,743 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 21:58:41,743 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:58:41,743 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:58:41,744 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 21:58:41,744 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 21:58:41,744 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:58:41,744 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 21:58:41,744 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 21:58:41,744 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 21:58:41,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:58:41,745 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:58:41,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 21:58:41,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:58:41,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:58:41,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:58:41,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:58:41,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:58:41,745 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:58:41,746 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:58:41,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:58:41,746 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:58:41,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:58:41,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:58:41,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:58:41,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:58:41,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:58:41,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:58:41,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:58:41,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:58:41,747 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 21:58:41,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 21:58:41,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:58:41,747 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:58:41,748 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:58:41,748 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan 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(__VERIFIER_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 -> 80e6cba3a638c96413a46f146860cf66cd7d52ab [2019-12-07 21:58:41,850 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:58:41,860 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:58:41,863 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:58:41,865 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:58:41,865 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:58:41,866 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2019-12-07 21:58:41,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/data/5f3ec5d0c/bb72de6673814dc8ba88bde9485a0968/FLAG51eb064e1 [2019-12-07 21:58:42,325 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:58:42,326 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2019-12-07 21:58:42,329 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/data/5f3ec5d0c/bb72de6673814dc8ba88bde9485a0968/FLAG51eb064e1 [2019-12-07 21:58:42,338 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/data/5f3ec5d0c/bb72de6673814dc8ba88bde9485a0968 [2019-12-07 21:58:42,340 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:58:42,341 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:58:42,341 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:58:42,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:58:42,344 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:58:42,344 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:58:42" (1/1) ... [2019-12-07 21:58:42,346 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c2a685 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:42, skipping insertion in model container [2019-12-07 21:58:42,346 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:58:42" (1/1) ... [2019-12-07 21:58:42,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:58:42,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:58:42,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:58:42,500 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:58:42,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:58:42,520 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:58:42,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:42 WrapperNode [2019-12-07 21:58:42,521 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:58:42,521 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:58:42,521 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:58:42,522 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:58:42,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:42" (1/1) ... [2019-12-07 21:58:42,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:42" (1/1) ... [2019-12-07 21:58:42,543 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:58:42,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:58:42,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:58:42,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:58:42,549 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:42" (1/1) ... [2019-12-07 21:58:42,550 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:42" (1/1) ... [2019-12-07 21:58:42,550 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:42" (1/1) ... [2019-12-07 21:58:42,550 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:42" (1/1) ... [2019-12-07 21:58:42,553 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:42" (1/1) ... [2019-12-07 21:58:42,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:42" (1/1) ... [2019-12-07 21:58:42,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:42" (1/1) ... [2019-12-07 21:58:42,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:58:42,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:58:42,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:58:42,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:58:42,557 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:42" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:58:42,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:58:42,594 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:58:42,696 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:58:42,696 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-07 21:58:42,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:58:42 BoogieIcfgContainer [2019-12-07 21:58:42,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:58:42,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:58:42,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:58:42,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:58:42,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:58:42" (1/3) ... [2019-12-07 21:58:42,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c0e33d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:58:42, skipping insertion in model container [2019-12-07 21:58:42,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:42" (2/3) ... [2019-12-07 21:58:42,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37c0e33d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:58:42, skipping insertion in model container [2019-12-07 21:58:42,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:58:42" (3/3) ... [2019-12-07 21:58:42,701 INFO L109 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2019-12-07 21:58:42,707 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:58:42,711 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 21:58:42,718 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 21:58:42,732 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:58:42,732 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:58:42,732 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:58:42,732 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:58:42,732 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:58:42,732 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:58:42,732 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:58:42,732 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:58:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2019-12-07 21:58:42,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 21:58:42,744 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:58:42,745 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 21:58:42,745 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:58:42,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:58:42,748 INFO L82 PathProgramCache]: Analyzing trace with hash 48307, now seen corresponding path program 1 times [2019-12-07 21:58:42,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 21:58:42,754 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090343836] [2019-12-07 21:58:42,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 21:58:42,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:58:42,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 21:58:42,830 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-12-07 21:58:42,831 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 21:58:42,841 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 09:58:42 BoogieIcfgContainer [2019-12-07 21:58:42,841 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 21:58:42,841 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 21:58:42,841 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 21:58:42,841 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 21:58:42,842 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:58:42" (3/4) ... [2019-12-07 21:58:42,844 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 21:58:42,844 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 21:58:42,846 INFO L168 Benchmark]: Toolchain (without parser) took 504.23 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.5 MB). Free memory was 946.2 MB in the beginning and 1.0 GB in the end (delta: -102.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:58:42,846 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:58:42,847 INFO L168 Benchmark]: CACSL2BoogieTranslator took 179.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.5 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -135.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-12-07 21:58:42,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.21 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:58:42,847 INFO L168 Benchmark]: Boogie Preprocessor took 12.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:58:42,848 INFO L168 Benchmark]: RCFGBuilder took 140.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. [2019-12-07 21:58:42,848 INFO L168 Benchmark]: TraceAbstraction took 143.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-12-07 21:58:42,848 INFO L168 Benchmark]: Witness Printer took 2.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 21:58:42,851 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 961.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 179.67 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 86.5 MB). Free memory was 946.2 MB in the beginning and 1.1 GB in the end (delta: -135.4 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.21 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.01 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 140.95 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 17.0 MB). Peak memory consumption was 17.0 MB. Max. memory is 11.5 GB. * TraceAbstraction took 143.69 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Witness Printer took 2.76 ms. Allocated memory is still 1.1 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 28]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 17, overapproximation of someBinaryDOUBLEComparisonOperation at line 27, overapproximation of someBinaryArithmeticFLOAToperation at line 6. Possible FailurePath: [L16] float IN = __VERIFIER_nondet_float(); [L6] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L11] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L19] float x = IN - f(IN)/fp(IN); [L27] COND TRUE !(x < 0.1) [L28] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 6 locations, 1 error locations. Result: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6occurred in iteration=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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 21:58:44,231 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 21:58:44,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 21:58:44,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 21:58:44,242 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 21:58:44,242 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 21:58:44,244 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 21:58:44,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 21:58:44,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 21:58:44,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 21:58:44,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 21:58:44,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 21:58:44,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 21:58:44,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 21:58:44,251 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 21:58:44,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 21:58:44,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 21:58:44,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 21:58:44,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 21:58:44,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 21:58:44,257 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 21:58:44,258 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 21:58:44,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 21:58:44,259 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 21:58:44,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 21:58:44,261 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 21:58:44,261 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 21:58:44,262 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 21:58:44,262 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 21:58:44,263 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 21:58:44,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 21:58:44,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 21:58:44,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 21:58:44,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 21:58:44,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 21:58:44,265 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 21:58:44,265 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 21:58:44,266 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 21:58:44,266 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 21:58:44,266 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 21:58:44,267 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 21:58:44,267 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-12-07 21:58:44,277 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 21:58:44,277 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 21:58:44,278 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 21:58:44,278 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 21:58:44,278 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 21:58:44,278 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 21:58:44,278 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 21:58:44,279 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 21:58:44,279 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 21:58:44,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 21:58:44,279 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 21:58:44,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 21:58:44,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 21:58:44,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-12-07 21:58:44,280 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 21:58:44,280 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-12-07 21:58:44,280 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 21:58:44,280 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 21:58:44,280 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 21:58:44,280 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 21:58:44,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-12-07 21:58:44,281 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 21:58:44,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-12-07 21:58:44,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 21:58:44,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 21:58:44,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 21:58:44,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 21:58:44,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:58:44,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 21:58:44,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 21:58:44,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-12-07 21:58:44,282 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 21:58:44,282 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 21:58:44,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-12-07 21:58:44,282 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 21:58:44,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 21:58:44,283 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan 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(__VERIFIER_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 -> 80e6cba3a638c96413a46f146860cf66cd7d52ab [2019-12-07 21:58:44,442 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 21:58:44,452 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 21:58:44,455 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 21:58:44,457 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 21:58:44,457 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 21:58:44,458 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2019-12-07 21:58:44,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/data/61c69555a/b6a6ee6d9d024cb7a9bbcf9f3fd27703/FLAGafa512d0e [2019-12-07 21:58:44,818 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 21:58:44,819 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/sv-benchmarks/c/floats-cdfpl/newton_1_4.i [2019-12-07 21:58:44,822 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/data/61c69555a/b6a6ee6d9d024cb7a9bbcf9f3fd27703/FLAGafa512d0e [2019-12-07 21:58:44,831 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/data/61c69555a/b6a6ee6d9d024cb7a9bbcf9f3fd27703 [2019-12-07 21:58:44,833 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 21:58:44,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 21:58:44,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 21:58:44,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 21:58:44,837 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 21:58:44,837 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:58:44" (1/1) ... [2019-12-07 21:58:44,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@415fd40c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:44, skipping insertion in model container [2019-12-07 21:58:44,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 09:58:44" (1/1) ... [2019-12-07 21:58:44,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 21:58:44,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 21:58:44,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:58:44,961 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 21:58:44,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 21:58:44,983 INFO L208 MainTranslator]: Completed translation [2019-12-07 21:58:44,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:44 WrapperNode [2019-12-07 21:58:44,984 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 21:58:44,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 21:58:44,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 21:58:44,985 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 21:58:44,990 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:44" (1/1) ... [2019-12-07 21:58:44,996 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:44" (1/1) ... [2019-12-07 21:58:45,041 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 21:58:45,041 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 21:58:45,041 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 21:58:45,042 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 21:58:45,047 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:44" (1/1) ... [2019-12-07 21:58:45,047 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:44" (1/1) ... [2019-12-07 21:58:45,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:44" (1/1) ... [2019-12-07 21:58:45,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:44" (1/1) ... [2019-12-07 21:58:45,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:44" (1/1) ... [2019-12-07 21:58:45,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:44" (1/1) ... [2019-12-07 21:58:45,056 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:44" (1/1) ... [2019-12-07 21:58:45,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 21:58:45,058 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 21:58:45,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 21:58:45,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 21:58:45,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 21:58:45,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 21:58:45,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 21:58:51,007 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 21:58:51,007 INFO L287 CfgBuilder]: Removed 8 assume(true) statements. [2019-12-07 21:58:51,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:58:51 BoogieIcfgContainer [2019-12-07 21:58:51,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 21:58:51,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 21:58:51,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 21:58:51,011 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 21:58:51,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 09:58:44" (1/3) ... [2019-12-07 21:58:51,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c4cac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:58:51, skipping insertion in model container [2019-12-07 21:58:51,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 09:58:44" (2/3) ... [2019-12-07 21:58:51,012 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36c4cac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 09:58:51, skipping insertion in model container [2019-12-07 21:58:51,012 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:58:51" (3/3) ... [2019-12-07 21:58:51,013 INFO L109 eAbstractionObserver]: Analyzing ICFG newton_1_4.i [2019-12-07 21:58:51,019 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 21:58:51,023 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-12-07 21:58:51,030 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-12-07 21:58:51,044 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 21:58:51,044 INFO L374 AbstractCegarLoop]: Hoare is true [2019-12-07 21:58:51,045 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 21:58:51,045 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 21:58:51,045 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 21:58:51,045 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 21:58:51,045 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 21:58:51,045 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 21:58:51,054 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-12-07 21:58:51,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 21:58:51,057 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 21:58:51,058 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 21:58:51,058 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-12-07 21:58:51,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 21:58:51,062 INFO L82 PathProgramCache]: Analyzing trace with hash 889475942, now seen corresponding path program 1 times [2019-12-07 21:58:51,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 21:58:51,069 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786146428] [2019-12-07 21:58:51,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 21:59:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 22:00:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 22:00:17,388 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 22:00:17,389 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 22:00:17,589 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 22:00:17,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 10:00:17 BoogieIcfgContainer [2019-12-07 22:00:17,616 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 22:00:17,617 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 22:00:17,617 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 22:00:17,617 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 22:00:17,618 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 09:58:51" (3/4) ... [2019-12-07 22:00:17,620 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-12-07 22:00:17,651 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c347dad0-f03c-4234-b6f6-55cbdb622dfc/bin/utaipan/witness.graphml [2019-12-07 22:00:17,651 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 22:00:17,652 INFO L168 Benchmark]: Toolchain (without parser) took 92818.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 952.4 MB in the beginning and 1.1 GB in the end (delta: -138.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 11.5 GB. [2019-12-07 22:00:17,653 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 22:00:17,653 INFO L168 Benchmark]: CACSL2BoogieTranslator took 149.62 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-12-07 22:00:17,653 INFO L168 Benchmark]: Boogie Procedure Inliner took 56.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -196.6 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. [2019-12-07 22:00:17,654 INFO L168 Benchmark]: Boogie Preprocessor took 16.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-12-07 22:00:17,654 INFO L168 Benchmark]: RCFGBuilder took 5949.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-12-07 22:00:17,655 INFO L168 Benchmark]: TraceAbstraction took 86607.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. [2019-12-07 22:00:17,655 INFO L168 Benchmark]: Witness Printer took 34.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 22:00:17,657 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 149.62 ms. Allocated memory is still 1.0 GB. Free memory was 952.4 MB in the beginning and 941.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 56.89 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -196.6 MB). Peak memory consumption was 15.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 5949.96 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 86607.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 11.5 GB. * Witness Printer took 34.28 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 28]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] float IN = __VERIFIER_nondet_float(); [L6] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L11] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L19] float x = IN - f(IN)/fp(IN); [L27] COND TRUE !(x < 0.1) [L28] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Result: UNSAFE, OverallTime: 86.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=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, 15.9s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...