./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan --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 c899a11b075f77e8271e38f51a1c9ce4fc2e25ab ................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan --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 c899a11b075f77e8271e38f51a1c9ce4fc2e25ab ........................................................................................................................................................................................................................................................................................... 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 0.2.0-7b2dab5 [2020-12-09 20:44:20,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:44:20,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:44:20,549 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:44:20,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:44:20,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:44:20,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:44:20,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:44:20,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:44:20,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:44:20,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:44:20,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:44:20,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:44:20,558 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:44:20,559 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:44:20,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:44:20,561 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:44:20,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:44:20,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:44:20,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:44:20,566 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:44:20,567 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:44:20,568 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:44:20,569 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:44:20,572 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:44:20,572 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:44:20,572 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:44:20,573 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:44:20,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:44:20,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:44:20,575 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:44:20,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:44:20,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:44:20,576 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:44:20,577 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:44:20,577 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:44:20,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:44:20,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:44:20,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:44:20,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:44:20,579 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:44:20,580 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 20:44:20,597 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:44:20,597 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:44:20,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:44:20,598 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:44:20,598 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:44:20,598 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:44:20,598 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 20:44:20,598 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:44:20,599 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:44:20,599 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 20:44:20,599 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 20:44:20,599 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:44:20,599 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 20:44:20,599 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 20:44:20,599 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 20:44:20,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:44:20,600 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:44:20,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 20:44:20,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:44:20,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:44:20,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 20:44:20,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:44:20,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 20:44:20,601 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:44:20,601 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:44:20,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 20:44:20,601 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:44:20,602 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 20:44:20,602 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:44:20,602 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:44:20,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:44:20,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:44:20,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:44:20,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 20:44:20,603 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 20:44:20,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 20:44:20,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 20:44:20,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:44:20,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:44:20,603 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-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899a11b075f77e8271e38f51a1c9ce4fc2e25ab [2020-12-09 20:44:20,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:44:20,798 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:44:20,799 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:44:20,800 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:44:20,801 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:44:20,801 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-12-09 20:44:20,844 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/data/199362aca/9530fd120dc14045817102a3b2761e7b/FLAGe4dd69133 [2020-12-09 20:44:21,193 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:44:21,193 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-12-09 20:44:21,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/data/199362aca/9530fd120dc14045817102a3b2761e7b/FLAGe4dd69133 [2020-12-09 20:44:21,207 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/data/199362aca/9530fd120dc14045817102a3b2761e7b [2020-12-09 20:44:21,209 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:44:21,209 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:44:21,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:44:21,211 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:44:21,213 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:44:21,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:44:21" (1/1) ... [2020-12-09 20:44:21,215 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@463813b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:21, skipping insertion in model container [2020-12-09 20:44:21,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:44:21" (1/1) ... [2020-12-09 20:44:21,220 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:44:21,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:44:21,353 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2020-12-09 20:44:21,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:44:21,364 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 20:44:21,383 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2020-12-09 20:44:21,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:44:21,397 INFO L208 MainTranslator]: Completed translation [2020-12-09 20:44:21,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:21 WrapperNode [2020-12-09 20:44:21,398 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:44:21,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 20:44:21,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 20:44:21,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 20:44:21,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:21" (1/1) ... [2020-12-09 20:44:21,415 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:21" (1/1) ... [2020-12-09 20:44:21,431 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 20:44:21,432 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 20:44:21,432 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 20:44:21,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 20:44:21,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:21" (1/1) ... [2020-12-09 20:44:21,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:21" (1/1) ... [2020-12-09 20:44:21,442 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:21" (1/1) ... [2020-12-09 20:44:21,442 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:21" (1/1) ... [2020-12-09 20:44:21,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:21" (1/1) ... [2020-12-09 20:44:21,448 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:21" (1/1) ... [2020-12-09 20:44:21,450 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:21" (1/1) ... [2020-12-09 20:44:21,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 20:44:21,452 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 20:44:21,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 20:44:21,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 20:44:21,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/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 [2020-12-09 20:44:21,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 20:44:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 20:44:21,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 20:44:21,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 20:44:21,677 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 20:44:21,677 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-09 20:44:21,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:44:21 BoogieIcfgContainer [2020-12-09 20:44:21,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 20:44:21,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 20:44:21,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 20:44:21,683 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 20:44:21,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:44:21" (1/3) ... [2020-12-09 20:44:21,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8fa299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:44:21, skipping insertion in model container [2020-12-09 20:44:21,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:21" (2/3) ... [2020-12-09 20:44:21,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a8fa299 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:44:21, skipping insertion in model container [2020-12-09 20:44:21,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:44:21" (3/3) ... [2020-12-09 20:44:21,685 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2020-12-09 20:44:21,695 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 20:44:21,697 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 20:44:21,705 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 20:44:21,721 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 20:44:21,722 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 20:44:21,722 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 20:44:21,722 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 20:44:21,722 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 20:44:21,722 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 20:44:21,722 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 20:44:21,722 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 20:44:21,731 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states. [2020-12-09 20:44:21,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-12-09 20:44:21,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:44:21,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-12-09 20:44:21,736 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:44:21,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:44:21,740 INFO L82 PathProgramCache]: Analyzing trace with hash 62017, now seen corresponding path program 1 times [2020-12-09 20:44:21,747 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 20:44:21,747 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129914036] [2020-12-09 20:44:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 20:44:21,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 20:44:21,822 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 20:44:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 20:44:21,835 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 20:44:21,850 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 20:44:21,850 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 20:44:21,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 20:44:21,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:44:21 BoogieIcfgContainer [2020-12-09 20:44:21,866 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 20:44:21,867 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 20:44:21,867 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 20:44:21,867 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 20:44:21,868 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:44:21" (3/4) ... [2020-12-09 20:44:21,871 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 20:44:21,871 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 20:44:21,874 INFO L168 Benchmark]: Toolchain (without parser) took 662.33 ms. Allocated memory was 79.7 MB in the beginning and 125.8 MB in the end (delta: 46.1 MB). Free memory was 47.0 MB in the beginning and 70.8 MB in the end (delta: -23.9 MB). Peak memory consumption was 20.3 MB. Max. memory is 16.1 GB. [2020-12-09 20:44:21,874 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 79.7 MB. Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 26.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:44:21,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 187.76 ms. Allocated memory was 79.7 MB in the beginning and 125.8 MB in the end (delta: 46.1 MB). Free memory was 46.7 MB in the beginning and 103.1 MB in the end (delta: -56.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 20:44:21,877 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.64 ms. Allocated memory is still 125.8 MB. Free memory was 103.1 MB in the beginning and 101.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:44:21,877 INFO L168 Benchmark]: Boogie Preprocessor took 19.27 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 101.0 MB in the end (delta: 498.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:44:21,878 INFO L168 Benchmark]: RCFGBuilder took 226.72 ms. Allocated memory is still 125.8 MB. Free memory was 100.2 MB in the beginning and 84.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 20:44:21,879 INFO L168 Benchmark]: TraceAbstraction took 186.02 ms. Allocated memory is still 125.8 MB. Free memory was 83.4 MB in the beginning and 71.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 20:44:21,880 INFO L168 Benchmark]: Witness Printer took 4.20 ms. Allocated memory is still 125.8 MB. Free memory was 71.6 MB in the beginning and 70.8 MB in the end (delta: 797.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:44:21,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 79.7 MB. Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 26.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 187.76 ms. Allocated memory was 79.7 MB in the beginning and 125.8 MB in the end (delta: 46.1 MB). Free memory was 46.7 MB in the beginning and 103.1 MB in the end (delta: -56.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.64 ms. Allocated memory is still 125.8 MB. Free memory was 103.1 MB in the beginning and 101.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.27 ms. Allocated memory is still 125.8 MB. Free memory was 101.5 MB in the beginning and 101.0 MB in the end (delta: 498.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 226.72 ms. Allocated memory is still 125.8 MB. Free memory was 100.2 MB in the beginning and 84.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 186.02 ms. Allocated memory is still 125.8 MB. Free memory was 83.4 MB in the beginning and 71.6 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.20 ms. Allocated memory is still 125.8 MB. Free memory was 71.6 MB in the beginning and 70.8 MB in the end (delta: 797.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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. VerificationResult: UNSAFE, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 20:44:23,426 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 20:44:23,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 20:44:23,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 20:44:23,456 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 20:44:23,457 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 20:44:23,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 20:44:23,461 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 20:44:23,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 20:44:23,464 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 20:44:23,465 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 20:44:23,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 20:44:23,467 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 20:44:23,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 20:44:23,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 20:44:23,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 20:44:23,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 20:44:23,473 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 20:44:23,475 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 20:44:23,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 20:44:23,479 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 20:44:23,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 20:44:23,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 20:44:23,483 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 20:44:23,486 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 20:44:23,487 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 20:44:23,487 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 20:44:23,488 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 20:44:23,489 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 20:44:23,490 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 20:44:23,490 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 20:44:23,491 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 20:44:23,492 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 20:44:23,492 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 20:44:23,494 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 20:44:23,494 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 20:44:23,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 20:44:23,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 20:44:23,495 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 20:44:23,496 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 20:44:23,496 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 20:44:23,497 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-12-09 20:44:23,523 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 20:44:23,523 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 20:44:23,524 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 20:44:23,524 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 20:44:23,525 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 20:44:23,525 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 20:44:23,525 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 20:44:23,525 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 20:44:23,525 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 20:44:23,526 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 20:44:23,526 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 20:44:23,526 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 20:44:23,527 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 20:44:23,527 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 20:44:23,527 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 20:44:23,527 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 20:44:23,527 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 20:44:23,527 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 20:44:23,528 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 20:44:23,528 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 20:44:23,528 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 20:44:23,528 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 20:44:23,528 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 20:44:23,528 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 20:44:23,528 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 20:44:23,528 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 20:44:23,529 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 20:44:23,529 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 20:44:23,529 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 20:44:23,529 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 20:44:23,529 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 20:44:23,529 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 20:44:23,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 20:44:23,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 20:44:23,530 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 20:44:23,530 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-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c899a11b075f77e8271e38f51a1c9ce4fc2e25ab [2020-12-09 20:44:23,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 20:44:23,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 20:44:23,789 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 20:44:23,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 20:44:23,791 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 20:44:23,791 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-12-09 20:44:23,831 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/data/64e7ac408/30c1d03de97d451e8f1ce8c0d177cb59/FLAGd14c67c7b [2020-12-09 20:44:24,217 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 20:44:24,218 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2020-12-09 20:44:24,224 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/data/64e7ac408/30c1d03de97d451e8f1ce8c0d177cb59/FLAGd14c67c7b [2020-12-09 20:44:24,233 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/data/64e7ac408/30c1d03de97d451e8f1ce8c0d177cb59 [2020-12-09 20:44:24,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 20:44:24,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 20:44:24,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 20:44:24,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 20:44:24,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 20:44:24,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:44:24" (1/1) ... [2020-12-09 20:44:24,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dab26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:24, skipping insertion in model container [2020-12-09 20:44:24,241 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:44:24" (1/1) ... [2020-12-09 20:44:24,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 20:44:24,257 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 20:44:24,366 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2020-12-09 20:44:24,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:44:24,381 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 20:44:24,408 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/sv-benchmarks/c/floats-cdfpl/newton_1_6.i[1224,1237] [2020-12-09 20:44:24,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 20:44:24,422 INFO L208 MainTranslator]: Completed translation [2020-12-09 20:44:24,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:24 WrapperNode [2020-12-09 20:44:24,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 20:44:24,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 20:44:24,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 20:44:24,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 20:44:24,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:24" (1/1) ... [2020-12-09 20:44:24,437 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:24" (1/1) ... [2020-12-09 20:44:24,451 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 20:44:24,452 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 20:44:24,452 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 20:44:24,452 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 20:44:24,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:24" (1/1) ... [2020-12-09 20:44:24,458 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:24" (1/1) ... [2020-12-09 20:44:24,461 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:24" (1/1) ... [2020-12-09 20:44:24,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:24" (1/1) ... [2020-12-09 20:44:24,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:24" (1/1) ... [2020-12-09 20:44:24,471 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:24" (1/1) ... [2020-12-09 20:44:24,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:24" (1/1) ... [2020-12-09 20:44:24,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 20:44:24,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 20:44:24,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 20:44:24,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 20:44:24,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:24" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/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 [2020-12-09 20:44:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 20:44:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 20:44:24,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 20:44:24,531 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 20:44:31,067 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 20:44:31,067 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-09 20:44:31,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:44:31 BoogieIcfgContainer [2020-12-09 20:44:31,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 20:44:31,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 20:44:31,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 20:44:31,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 20:44:31,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:44:24" (1/3) ... [2020-12-09 20:44:31,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f17ad54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:44:31, skipping insertion in model container [2020-12-09 20:44:31,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:44:24" (2/3) ... [2020-12-09 20:44:31,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f17ad54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:44:31, skipping insertion in model container [2020-12-09 20:44:31,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:44:31" (3/3) ... [2020-12-09 20:44:31,076 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2020-12-09 20:44:31,085 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 20:44:31,087 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-09 20:44:31,094 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-09 20:44:31,114 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 20:44:31,114 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 20:44:31,114 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 20:44:31,114 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 20:44:31,114 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 20:44:31,115 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 20:44:31,115 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 20:44:31,115 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 20:44:31,122 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-09 20:44:31,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 20:44:31,125 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:44:31,126 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:44:31,126 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:44:31,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:44:31,130 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2020-12-09 20:44:31,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:44:31,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926005157] [2020-12-09 20:44:31,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/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 [2020-12-09 20:44:32,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 20:44:32,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 20:44:32,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 20:44:32,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 20:44:32,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 20:44:32,256 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926005157] [2020-12-09 20:44:32,256 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 20:44:32,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 20:44:32,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855254304] [2020-12-09 20:44:32,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 20:44:32,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 20:44:32,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 20:44:32,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 20:44:32,270 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-12-09 20:44:32,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 20:44:32,279 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2020-12-09 20:44:32,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 20:44:32,281 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-12-09 20:44:32,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 20:44:32,286 INFO L225 Difference]: With dead ends: 23 [2020-12-09 20:44:32,286 INFO L226 Difference]: Without dead ends: 9 [2020-12-09 20:44:32,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 20:44:32,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-12-09 20:44:32,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-12-09 20:44:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-12-09 20:44:32,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2020-12-09 20:44:32,308 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2020-12-09 20:44:32,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 20:44:32,308 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2020-12-09 20:44:32,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 20:44:32,309 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2020-12-09 20:44:32,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 20:44:32,309 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 20:44:32,309 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 20:44:32,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 20:44:32,511 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 20:44:32,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 20:44:32,513 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2020-12-09 20:44:32,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 20:44:32,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626896476] [2020-12-09 20:44:32,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 20:44:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 20:44:35,821 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 20:45:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 20:45:05,042 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 20:45:05,130 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 20:45:05,130 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 20:45:05,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 20:45:05,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:45:05 BoogieIcfgContainer [2020-12-09 20:45:05,368 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 20:45:05,371 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 20:45:05,371 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 20:45:05,371 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 20:45:05,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:44:31" (3/4) ... [2020-12-09 20:45:05,374 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-09 20:45:05,401 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8bd9b912-2aaa-4ad2-bfb4-17e469a26cd6/bin/utaipan/witness.graphml [2020-12-09 20:45:05,401 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 20:45:05,402 INFO L168 Benchmark]: Toolchain (without parser) took 41165.34 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 47.9 MB in the beginning and 60.7 MB in the end (delta: -12.8 MB). Peak memory consumption was 553.8 kB. Max. memory is 16.1 GB. [2020-12-09 20:45:05,402 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 65.0 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:45:05,403 INFO L168 Benchmark]: CACSL2BoogieTranslator took 186.04 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 48.1 MB in the end (delta: -449.4 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 20:45:05,403 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.79 ms. Allocated memory is still 65.0 MB. Free memory was 47.9 MB in the beginning and 46.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:45:05,404 INFO L168 Benchmark]: Boogie Preprocessor took 24.36 ms. Allocated memory is still 65.0 MB. Free memory was 46.5 MB in the beginning and 45.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 20:45:05,404 INFO L168 Benchmark]: RCFGBuilder took 6591.63 ms. Allocated memory is still 65.0 MB. Free memory was 45.2 MB in the beginning and 33.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 20:45:05,404 INFO L168 Benchmark]: TraceAbstraction took 34297.95 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 33.1 MB in the beginning and 38.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. [2020-12-09 20:45:05,405 INFO L168 Benchmark]: Witness Printer took 29.70 ms. Allocated memory is still 79.7 MB. Free memory was 62.2 MB in the beginning and 60.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 20:45:05,407 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 65.0 MB. Free memory is still 47.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 186.04 ms. Allocated memory is still 65.0 MB. Free memory was 47.7 MB in the beginning and 48.1 MB in the end (delta: -449.4 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.79 ms. Allocated memory is still 65.0 MB. Free memory was 47.9 MB in the beginning and 46.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.36 ms. Allocated memory is still 65.0 MB. Free memory was 46.5 MB in the beginning and 45.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 6591.63 ms. Allocated memory is still 65.0 MB. Free memory was 45.2 MB in the beginning and 33.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 34297.95 ms. Allocated memory was 65.0 MB in the beginning and 79.7 MB in the end (delta: 14.7 MB). Free memory was 33.1 MB in the beginning and 38.0 MB in the end (delta: -4.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 16.1 GB. * Witness Printer took 29.70 ms. Allocated memory is still 79.7 MB. Free memory was 62.2 MB in the beginning and 60.7 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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. VerificationResult: UNSAFE, OverallTime: 34.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 4.2s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 49 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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! Received shutdown request...