./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/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 46f9db3b7991e6681e893353a1157ad7f5bf9fdc ................................................................................................................................................................................................................................................. 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_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/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 46f9db3b7991e6681e893353a1157ad7f5bf9fdc ............................................................................................................................................................................................................................................................................................. 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-a4ecdab [2020-11-22 12:48:52,028 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:48:52,032 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:48:52,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:48:52,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:48:52,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:48:52,093 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:48:52,096 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:48:52,103 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:48:52,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:48:52,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:48:52,112 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:48:52,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:48:52,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:48:52,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:48:52,128 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:48:52,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:48:52,133 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:48:52,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:48:52,141 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:48:52,144 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:48:52,146 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:48:52,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:48:52,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:48:52,154 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:48:52,154 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:48:52,155 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:48:52,156 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:48:52,157 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:48:52,159 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:48:52,159 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:48:52,161 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:48:52,162 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:48:52,163 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:48:52,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:48:52,168 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:48:52,169 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:48:52,170 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:48:52,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:48:52,173 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:48:52,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:48:52,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:48:52,221 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:48:52,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:48:52,223 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:48:52,223 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:48:52,223 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:48:52,223 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:48:52,224 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:48:52,224 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:48:52,228 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:48:52,228 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:48:52,229 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:48:52,230 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:48:52,230 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:48:52,230 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:48:52,231 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:48:52,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:48:52,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:48:52,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:48:52,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:48:52,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:48:52,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:48:52,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:48:52,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:48:52,234 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:48:52,234 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:48:52,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:48:52,235 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:48:52,235 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:48:52,235 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:48:52,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:48:52,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:48:52,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:48:52,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:48:52,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:48:52,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:48:52,239 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:48:52,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:48:52,240 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:48:52,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:48:52,240 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:48:52,241 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_256ad546-1b3f-4d71-b7a9-c1e9329c661c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46f9db3b7991e6681e893353a1157ad7f5bf9fdc [2020-11-22 12:48:52,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:48:52,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:48:52,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:48:52,659 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:48:52,660 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:48:52,661 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2020-11-22 12:48:52,753 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/data/fde40a9ab/3bc773d1493a4efd91943d11cbed8687/FLAG8e5900b54 [2020-11-22 12:48:53,417 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:48:53,418 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2020-11-22 12:48:53,432 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/data/fde40a9ab/3bc773d1493a4efd91943d11cbed8687/FLAG8e5900b54 [2020-11-22 12:48:53,761 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/data/fde40a9ab/3bc773d1493a4efd91943d11cbed8687 [2020-11-22 12:48:53,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:48:53,766 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:48:53,768 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:48:53,769 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:48:53,772 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:48:53,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:48:53" (1/1) ... [2020-11-22 12:48:53,776 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a5a785 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:53, skipping insertion in model container [2020-11-22 12:48:53,776 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:48:53" (1/1) ... [2020-11-22 12:48:53,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:48:53,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:48:54,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:48:54,079 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:48:54,102 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:48:54,120 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:48:54,121 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:54 WrapperNode [2020-11-22 12:48:54,121 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:48:54,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:48:54,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:48:54,123 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:48:54,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:54" (1/1) ... [2020-11-22 12:48:54,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:54" (1/1) ... [2020-11-22 12:48:54,165 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:48:54,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:48:54,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:48:54,167 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:48:54,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:54" (1/1) ... [2020-11-22 12:48:54,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:54" (1/1) ... [2020-11-22 12:48:54,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:54" (1/1) ... [2020-11-22 12:48:54,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:54" (1/1) ... [2020-11-22 12:48:54,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:54" (1/1) ... [2020-11-22 12:48:54,189 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:54" (1/1) ... [2020-11-22 12:48:54,190 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:54" (1/1) ... [2020-11-22 12:48:54,193 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:48:54,194 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:48:54,194 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:48:54,194 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:48:54,196 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:54" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/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 [2020-11-22 12:48:54,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:48:54,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:48:54,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:48:54,275 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:48:54,739 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:48:54,740 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-22 12:48:54,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:48:54 BoogieIcfgContainer [2020-11-22 12:48:54,742 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:48:54,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:48:54,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:48:54,749 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:48:54,749 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:48:53" (1/3) ... [2020-11-22 12:48:54,750 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b24f77b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:48:54, skipping insertion in model container [2020-11-22 12:48:54,750 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:48:54" (2/3) ... [2020-11-22 12:48:54,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b24f77b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:48:54, skipping insertion in model container [2020-11-22 12:48:54,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:48:54" (3/3) ... [2020-11-22 12:48:54,753 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2020-11-22 12:48:54,782 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:48:54,787 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:48:54,801 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:48:54,841 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:48:54,841 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:48:54,841 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:48:54,841 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:48:54,842 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:48:54,842 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:48:54,842 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:48:54,842 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:48:54,856 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2020-11-22 12:48:54,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-22 12:48:54,862 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:48:54,863 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-22 12:48:54,863 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:48:54,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:48:54,870 INFO L82 PathProgramCache]: Analyzing trace with hash 2101419, now seen corresponding path program 1 times [2020-11-22 12:48:54,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:48:54,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35166751] [2020-11-22 12:48:54,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:48:55,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:48:55,048 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:48:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:48:55,073 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:48:55,107 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-11-22 12:48:55,108 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:48:55,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 12:48:55,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:48:55 BoogieIcfgContainer [2020-11-22 12:48:55,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:48:55,143 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:48:55,144 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:48:55,144 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:48:55,145 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:48:54" (3/4) ... [2020-11-22 12:48:55,149 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-22 12:48:55,149 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:48:55,154 INFO L168 Benchmark]: Toolchain (without parser) took 1384.18 ms. Allocated memory is still 98.6 MB. Free memory was 79.0 MB in the beginning and 67.8 MB in the end (delta: 11.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:55,155 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory is still 55.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:48:55,157 INFO L168 Benchmark]: CACSL2BoogieTranslator took 353.73 ms. Allocated memory is still 98.6 MB. Free memory was 78.7 MB in the beginning and 73.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:55,160 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.72 ms. Allocated memory is still 98.6 MB. Free memory was 73.6 MB in the beginning and 72.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:55,161 INFO L168 Benchmark]: Boogie Preprocessor took 26.63 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 71.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:55,163 INFO L168 Benchmark]: RCFGBuilder took 548.85 ms. Allocated memory is still 98.6 MB. Free memory was 71.1 MB in the beginning and 54.9 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:48:55,164 INFO L168 Benchmark]: TraceAbstraction took 395.91 ms. Allocated memory is still 98.6 MB. Free memory was 54.5 MB in the beginning and 68.2 MB in the end (delta: -13.8 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:48:55,165 INFO L168 Benchmark]: Witness Printer took 6.19 ms. Allocated memory is still 98.6 MB. Free memory was 68.2 MB in the beginning and 67.8 MB in the end (delta: 470.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:48:55,177 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory is still 55.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 353.73 ms. Allocated memory is still 98.6 MB. Free memory was 78.7 MB in the beginning and 73.8 MB in the end (delta: 5.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.72 ms. Allocated memory is still 98.6 MB. Free memory was 73.6 MB in the beginning and 72.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.63 ms. Allocated memory is still 98.6 MB. Free memory was 72.2 MB in the beginning and 71.1 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 548.85 ms. Allocated memory is still 98.6 MB. Free memory was 71.1 MB in the beginning and 54.9 MB in the end (delta: 16.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 395.91 ms. Allocated memory is still 98.6 MB. Free memory was 54.5 MB in the beginning and 68.2 MB in the end (delta: -13.8 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 6.19 ms. Allocated memory is still 98.6 MB. Free memory was 68.2 MB in the beginning and 67.8 MB in the end (delta: 470.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 12]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() 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) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_7.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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=7occurred 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, 4 NumberOfCodeBlocks, 4 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-a4ecdab [2020-11-22 12:48:58,168 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:48:58,171 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:48:58,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:48:58,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:48:58,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:48:58,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:48:58,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:48:58,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:48:58,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:48:58,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:48:58,273 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:48:58,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:48:58,277 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:48:58,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:48:58,283 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:48:58,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:48:58,292 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:48:58,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:48:58,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:48:58,309 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:48:58,312 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:48:58,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:48:58,320 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:48:58,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:48:58,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:48:58,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:48:58,332 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:48:58,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:48:58,335 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:48:58,336 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:48:58,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:48:58,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:48:58,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:48:58,341 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:48:58,341 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:48:58,342 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:48:58,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:48:58,343 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:48:58,345 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:48:58,346 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:48:58,347 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-22 12:48:58,396 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:48:58,396 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:48:58,398 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:48:58,399 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:48:58,399 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:48:58,399 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:48:58,399 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:48:58,400 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:48:58,400 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:48:58,401 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:48:58,402 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:48:58,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:48:58,403 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:48:58,403 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:48:58,403 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:48:58,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:48:58,404 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:48:58,404 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-22 12:48:58,404 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-22 12:48:58,405 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:48:58,405 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:48:58,405 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:48:58,405 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:48:58,406 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:48:58,406 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-22 12:48:58,406 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:48:58,406 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:48:58,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:48:58,407 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:48:58,407 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:48:58,407 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:48:58,407 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-22 12:48:58,408 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-22 12:48:58,408 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:48:58,408 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:48:58,409 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:48:58,409 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_256ad546-1b3f-4d71-b7a9-c1e9329c661c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46f9db3b7991e6681e893353a1157ad7f5bf9fdc [2020-11-22 12:48:58,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:48:58,900 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:48:58,903 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:48:58,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:48:58,908 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:48:58,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/../../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2020-11-22 12:48:58,987 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/data/a7c5a56fb/8bce70c41f3c4d25aabee94251b1f0db/FLAG84d100d45 [2020-11-22 12:48:59,623 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:48:59,623 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2020-11-22 12:48:59,629 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/data/a7c5a56fb/8bce70c41f3c4d25aabee94251b1f0db/FLAG84d100d45 [2020-11-22 12:48:59,995 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/data/a7c5a56fb/8bce70c41f3c4d25aabee94251b1f0db [2020-11-22 12:48:59,999 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:49:00,002 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:49:00,007 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:49:00,007 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:49:00,011 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:49:00,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:48:59" (1/1) ... [2020-11-22 12:49:00,015 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17d4421d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:00, skipping insertion in model container [2020-11-22 12:49:00,017 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:48:59" (1/1) ... [2020-11-22 12:49:00,026 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:49:00,049 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:49:00,254 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:49:00,276 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:49:00,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:49:00,340 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:49:00,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:00 WrapperNode [2020-11-22 12:49:00,341 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:49:00,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:49:00,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:49:00,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:49:00,359 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:00" (1/1) ... [2020-11-22 12:49:00,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:00" (1/1) ... [2020-11-22 12:49:00,434 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:49:00,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:49:00,435 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:49:00,435 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:49:00,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:00" (1/1) ... [2020-11-22 12:49:00,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:00" (1/1) ... [2020-11-22 12:49:00,462 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:00" (1/1) ... [2020-11-22 12:49:00,463 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:00" (1/1) ... [2020-11-22 12:49:00,486 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:00" (1/1) ... [2020-11-22 12:49:00,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:00" (1/1) ... [2020-11-22 12:49:00,501 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:00" (1/1) ... [2020-11-22 12:49:00,505 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:49:00,506 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:49:00,506 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:49:00,506 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:49:00,507 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/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 [2020-11-22 12:49:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-22 12:49:00,604 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:49:00,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:49:00,607 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:49:07,381 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:49:07,381 INFO L298 CfgBuilder]: Removed 12 assume(true) statements. [2020-11-22 12:49:07,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:49:07 BoogieIcfgContainer [2020-11-22 12:49:07,383 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:49:07,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:49:07,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:49:07,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:49:07,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:48:59" (1/3) ... [2020-11-22 12:49:07,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b6a7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:49:07, skipping insertion in model container [2020-11-22 12:49:07,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:49:00" (2/3) ... [2020-11-22 12:49:07,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41b6a7ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:49:07, skipping insertion in model container [2020-11-22 12:49:07,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:49:07" (3/3) ... [2020-11-22 12:49:07,392 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2020-11-22 12:49:07,403 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:49:07,408 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-22 12:49:07,420 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-22 12:49:07,457 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:49:07,457 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:49:07,458 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:49:07,458 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:49:07,458 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:49:07,458 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:49:07,458 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:49:07,458 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:49:07,470 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-22 12:49:07,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:49:07,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:07,489 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:49:07,489 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:49:07,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:07,495 INFO L82 PathProgramCache]: Analyzing trace with hash -595084600, now seen corresponding path program 1 times [2020-11-22 12:49:07,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:49:07,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [680663749] [2020-11-22 12:49:07,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/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 [2020-11-22 12:49:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:49:08,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 12:49:08,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:49:08,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:49:08,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:49:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:49:08,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [680663749] [2020-11-22 12:49:08,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:49:08,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:49:08,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215897039] [2020-11-22 12:49:08,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:49:08,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-22 12:49:08,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:49:08,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:49:08,907 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-11-22 12:49:08,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:49:08,922 INFO L93 Difference]: Finished difference Result 25 states and 28 transitions. [2020-11-22 12:49:08,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:49:08,923 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-11-22 12:49:08,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:49:08,932 INFO L225 Difference]: With dead ends: 25 [2020-11-22 12:49:08,933 INFO L226 Difference]: Without dead ends: 10 [2020-11-22 12:49:08,935 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:49:08,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-22 12:49:08,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-22 12:49:08,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-22 12:49:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 9 transitions. [2020-11-22 12:49:08,967 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 9 transitions. Word has length 9 [2020-11-22 12:49:08,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:49:08,967 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 9 transitions. [2020-11-22 12:49:08,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:49:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 9 transitions. [2020-11-22 12:49:08,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-22 12:49:08,968 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:49:08,969 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:49:09,184 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-22 12:49:09,185 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:49:09,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:49:09,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1179922762, now seen corresponding path program 1 times [2020-11-22 12:49:09,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-22 12:49:09,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444106138] [2020-11-22 12:49:09,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/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 [2020-11-22 12:49:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:49:15,180 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:49:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-22 12:49:22,360 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-22 12:49:22,500 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-11-22 12:49:22,500 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-22 12:49:22,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-22 12:49:22,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:49:22 BoogieIcfgContainer [2020-11-22 12:49:22,733 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:49:22,734 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:49:22,734 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:49:22,734 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:49:22,735 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:49:07" (3/4) ... [2020-11-22 12:49:22,737 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-22 12:49:22,789 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_256ad546-1b3f-4d71-b7a9-c1e9329c661c/bin/utaipan/witness.graphml [2020-11-22 12:49:22,790 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:49:22,793 INFO L168 Benchmark]: Toolchain (without parser) took 22789.55 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 32.5 MB in the beginning and 54.8 MB in the end (delta: -22.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:49:22,794 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 54.5 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:49:22,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.27 ms. Allocated memory is still 54.5 MB. Free memory was 32.3 MB in the beginning and 35.4 MB in the end (delta: -3.1 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:22,795 INFO L168 Benchmark]: Boogie Procedure Inliner took 92.07 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 35.4 MB in the beginning and 58.9 MB in the end (delta: -23.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:22,796 INFO L168 Benchmark]: Boogie Preprocessor took 70.25 ms. Allocated memory is still 75.5 MB. Free memory was 58.9 MB in the beginning and 57.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:49:22,796 INFO L168 Benchmark]: RCFGBuilder took 6877.25 ms. Allocated memory is still 75.5 MB. Free memory was 57.6 MB in the beginning and 46.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:22,797 INFO L168 Benchmark]: TraceAbstraction took 15347.66 ms. Allocated memory is still 75.5 MB. Free memory was 45.6 MB in the beginning and 56.7 MB in the end (delta: -11.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:22,798 INFO L168 Benchmark]: Witness Printer took 56.39 ms. Allocated memory is still 75.5 MB. Free memory was 56.7 MB in the beginning and 54.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:49:22,801 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 54.5 MB. Free memory was 37.4 MB in the beginning and 37.4 MB in the end (delta: 32.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 334.27 ms. Allocated memory is still 54.5 MB. Free memory was 32.3 MB in the beginning and 35.4 MB in the end (delta: -3.1 MB). Peak memory consumption was 9.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 92.07 ms. Allocated memory was 54.5 MB in the beginning and 75.5 MB in the end (delta: 21.0 MB). Free memory was 35.4 MB in the beginning and 58.9 MB in the end (delta: -23.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.25 ms. Allocated memory is still 75.5 MB. Free memory was 58.9 MB in the beginning and 57.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 6877.25 ms. Allocated memory is still 75.5 MB. Free memory was 57.6 MB in the beginning and 46.1 MB in the end (delta: 11.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15347.66 ms. Allocated memory is still 75.5 MB. Free memory was 45.6 MB in the beginning and 56.7 MB in the end (delta: -11.1 MB). Peak memory consumption was 10.4 MB. Max. memory is 16.1 GB. * Witness Printer took 56.39 ms. Allocated memory is still 75.5 MB. Free memory was 56.7 MB in the beginning and 54.8 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_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) [L12] COND FALSE !(0) [L12] __assert_fail ("0", "newton_1_7.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.2s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 13 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 7.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 128 SizeOfPredicates, 0 NumberOfNonLiveVariables, 33 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...