./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 20ed64ec Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --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=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_1_7.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 Automizer --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 0.2.1-dev-20ed64e [2021-08-25 23:40:24,370 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-25 23:40:24,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-25 23:40:24,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-25 23:40:24,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-25 23:40:24,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-25 23:40:24,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-25 23:40:24,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-25 23:40:24,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-25 23:40:24,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-25 23:40:24,396 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-25 23:40:24,397 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-25 23:40:24,397 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-25 23:40:24,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-25 23:40:24,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-25 23:40:24,399 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-25 23:40:24,400 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-25 23:40:24,401 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-25 23:40:24,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-25 23:40:24,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-25 23:40:24,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-25 23:40:24,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-25 23:40:24,416 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-25 23:40:24,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-25 23:40:24,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-25 23:40:24,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-25 23:40:24,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-25 23:40:24,419 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-25 23:40:24,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-25 23:40:24,420 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-25 23:40:24,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 23:40:24,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 23:40:24,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 23:40:24,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 23:40:24,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 23:40:24,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 23:40:24,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 23:40:24,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 23:40:24,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 23:40:24,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 23:40:24,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 23:40:24,425 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-25 23:40:24,440 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 23:40:24,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 23:40:24,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 23:40:24,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 23:40:24,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 23:40:24,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 23:40:24,442 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 23:40:24,442 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 23:40:24,442 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 23:40:24,443 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-25 23:40:24,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 23:40:24,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 23:40:24,443 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 23:40:24,443 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 23:40:24,443 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 23:40:24,443 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 23:40:24,444 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 23:40:24,444 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 23:40:24,444 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 23:40:24,444 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 23:40:24,451 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 23:40:24,451 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 23:40:24,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:40:24,451 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 23:40:24,452 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 23:40:24,452 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 23:40:24,452 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-25 23:40:24,452 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-25 23:40:24,452 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 23:40:24,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 23:40:24,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46f9db3b7991e6681e893353a1157ad7f5bf9fdc [2021-08-25 23:40:24,667 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 23:40:24,695 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 23:40:24,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 23:40:24,697 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 23:40:24,698 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 23:40:24,699 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-08-25 23:40:24,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6234ff434/defba6faf5fd4dc8a429923c8bbc4cca/FLAG1bea30ab2 [2021-08-25 23:40:25,270 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 23:40:25,270 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-08-25 23:40:25,277 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6234ff434/defba6faf5fd4dc8a429923c8bbc4cca/FLAG1bea30ab2 [2021-08-25 23:40:25,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6234ff434/defba6faf5fd4dc8a429923c8bbc4cca [2021-08-25 23:40:25,764 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 23:40:25,767 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 23:40:25,767 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 23:40:25,767 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 23:40:25,770 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 23:40:25,771 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:40:25" (1/1) ... [2021-08-25 23:40:25,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d07fa1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:25, skipping insertion in model container [2021-08-25 23:40:25,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:40:25" (1/1) ... [2021-08-25 23:40:25,776 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 23:40:25,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 23:40:25,905 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-08-25 23:40:25,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:40:25,916 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 23:40:25,953 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-08-25 23:40:25,957 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:40:25,970 INFO L208 MainTranslator]: Completed translation [2021-08-25 23:40:25,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:25 WrapperNode [2021-08-25 23:40:25,971 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 23:40:25,972 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 23:40:25,973 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 23:40:25,973 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 23:40:25,978 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:25" (1/1) ... [2021-08-25 23:40:25,998 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:25" (1/1) ... [2021-08-25 23:40:26,026 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 23:40:26,027 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 23:40:26,027 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 23:40:26,027 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 23:40:26,034 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:25" (1/1) ... [2021-08-25 23:40:26,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:25" (1/1) ... [2021-08-25 23:40:26,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:25" (1/1) ... [2021-08-25 23:40:26,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:25" (1/1) ... [2021-08-25 23:40:26,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:25" (1/1) ... [2021-08-25 23:40:26,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:25" (1/1) ... [2021-08-25 23:40:26,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:25" (1/1) ... [2021-08-25 23:40:26,059 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 23:40:26,060 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 23:40:26,060 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 23:40:26,061 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 23:40:26,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:25" (1/1) ... [2021-08-25 23:40:26,066 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:40:26,071 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 23:40:26,081 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-25 23:40:26,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-25 23:40:26,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-25 23:40:26,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 23:40:26,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 23:40:26,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 23:40:26,321 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 23:40:26,321 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-25 23:40:26,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:40:26 BoogieIcfgContainer [2021-08-25 23:40:26,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 23:40:26,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 23:40:26,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 23:40:26,325 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 23:40:26,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 11:40:25" (1/3) ... [2021-08-25 23:40:26,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577f604c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:40:26, skipping insertion in model container [2021-08-25 23:40:26,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:25" (2/3) ... [2021-08-25 23:40:26,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@577f604c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:40:26, skipping insertion in model container [2021-08-25 23:40:26,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:40:26" (3/3) ... [2021-08-25 23:40:26,327 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2021-08-25 23:40:26,330 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 23:40:26,344 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 23:40:26,401 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 23:40:26,406 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-25 23:40:26,406 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 23:40:26,429 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:40:26,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-25 23:40:26,433 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:40:26,433 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:40:26,434 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:40:26,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:40:26,452 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-08-25 23:40:26,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:40:26,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116229040] [2021-08-25 23:40:26,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:40:26,460 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:40:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:40:26,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:40:26,594 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-25 23:40:26,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116229040] [2021-08-25 23:40:26,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116229040] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-25 23:40:26,596 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:40:26,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-25 23:40:26,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755767937] [2021-08-25 23:40:26,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-25 23:40:26,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-25 23:40:26,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-25 23:40:26,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:40:26,626 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:40:26,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:40:26,635 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-08-25 23:40:26,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-25 23:40:26,636 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-25 23:40:26,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:40:26,641 INFO L225 Difference]: With dead ends: 23 [2021-08-25 23:40:26,641 INFO L226 Difference]: Without dead ends: 9 [2021-08-25 23:40:26,644 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:40:26,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-08-25 23:40:26,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-25 23:40:26,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:40:26,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-08-25 23:40:26,662 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-08-25 23:40:26,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:40:26,663 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-08-25 23:40:26,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:40:26,663 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-08-25 23:40:26,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-25 23:40:26,664 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:40:26,664 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:40:26,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-25 23:40:26,664 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:40:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:40:26,668 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-08-25 23:40:26,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-25 23:40:26,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599730434] [2021-08-25 23:40:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:40:26,669 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-25 23:40:26,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:40:26,691 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 23:40:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:40:26,752 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-25 23:40:26,753 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 23:40:26,754 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 23:40:26,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-25 23:40:26,759 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 23:40:26,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 11:40:26 BoogieIcfgContainer [2021-08-25 23:40:26,773 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 23:40:26,774 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 23:40:26,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 23:40:26,775 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 23:40:26,775 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:40:26" (3/4) ... [2021-08-25 23:40:26,777 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-25 23:40:26,778 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 23:40:26,779 INFO L168 Benchmark]: Toolchain (without parser) took 1011.91 ms. Allocated memory is still 69.2 MB. Free memory was 51.5 MB in the beginning and 48.7 MB in the end (delta: 2.8 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:26,780 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 69.2 MB. Free memory is still 50.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:40:26,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 204.45 ms. Allocated memory is still 69.2 MB. Free memory was 51.2 MB in the beginning and 41.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:26,782 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.89 ms. Allocated memory is still 69.2 MB. Free memory was 41.2 MB in the beginning and 39.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:40:26,782 INFO L168 Benchmark]: Boogie Preprocessor took 32.26 ms. Allocated memory is still 69.2 MB. Free memory was 39.7 MB in the beginning and 38.8 MB in the end (delta: 960.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:26,785 INFO L168 Benchmark]: RCFGBuilder took 262.68 ms. Allocated memory is still 69.2 MB. Free memory was 38.6 MB in the beginning and 46.5 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:26,786 INFO L168 Benchmark]: TraceAbstraction took 449.91 ms. Allocated memory is still 69.2 MB. Free memory was 45.9 MB in the beginning and 49.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. [2021-08-25 23:40:26,786 INFO L168 Benchmark]: Witness Printer took 3.34 ms. Allocated memory is still 69.2 MB. Free memory is still 48.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:40:26,791 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 69.2 MB. Free memory is still 50.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 204.45 ms. Allocated memory is still 69.2 MB. Free memory was 51.2 MB in the beginning and 41.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.89 ms. Allocated memory is still 69.2 MB. Free memory was 41.2 MB in the beginning and 39.7 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.26 ms. Allocated memory is still 69.2 MB. Free memory was 39.7 MB in the beginning and 38.8 MB in the end (delta: 960.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 262.68 ms. Allocated memory is still 69.2 MB. Free memory was 38.6 MB in the beginning and 46.5 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 449.91 ms. Allocated memory is still 69.2 MB. Free memory was 45.9 MB in the beginning and 49.0 MB in the end (delta: -3.1 MB). Peak memory consumption was 19.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.34 ms. Allocated memory is still 69.2 MB. Free memory is still 48.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 42]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 31, overapproximation of someBinaryDOUBLEComparisonOperation at line 41, overapproximation of someBinaryArithmeticFLOAToperation at line 33. 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, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 371.9ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 20.5ms, AutomataDifference: 33.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 6.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 9.7ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 8.3ms SsaConstructionTime, 34.3ms SatisfiabilityAnalysisTime, 43.3ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 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 could not prove your program: unable to determine feasibility of some traces [2021-08-25 23:40:26,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-25 23:40:28,537 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-25 23:40:28,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-25 23:40:28,612 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-25 23:40:28,613 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-25 23:40:28,614 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-25 23:40:28,614 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-25 23:40:28,615 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-25 23:40:28,615 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-25 23:40:28,615 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-25 23:40:28,616 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-25 23:40:28,617 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-25 23:40:28,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-25 23:40:28,620 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-25 23:40:28,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-25 23:40:28,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-25 23:40:28,650 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-25 23:40:28,651 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-25 23:40:28,652 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-25 23:40:28,652 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-25 23:40:28,652 INFO L138 SettingsManager]: * Use SBE=true [2021-08-25 23:40:28,653 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-25 23:40:28,653 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-25 23:40:28,653 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-25 23:40:28,653 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-25 23:40:28,654 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-25 23:40:28,654 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-25 23:40:28,654 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-25 23:40:28,654 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-25 23:40:28,654 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-25 23:40:28,654 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-25 23:40:28,655 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-25 23:40:28,655 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-25 23:40:28,655 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-25 23:40:28,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-25 23:40:28,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-25 23:40:28,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-25 23:40:28,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:40:28,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-25 23:40:28,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-25 23:40:28,664 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-25 23:40:28,664 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-25 23:40:28,665 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-25 23:40:28,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-25 23:40:28,665 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-25 23:40:28,665 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-25 23:40:28,665 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 46f9db3b7991e6681e893353a1157ad7f5bf9fdc [2021-08-25 23:40:28,942 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-25 23:40:28,955 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-25 23:40:28,957 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-25 23:40:28,958 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-25 23:40:28,958 INFO L275 PluginConnector]: CDTParser initialized [2021-08-25 23:40:28,959 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-08-25 23:40:28,995 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247c117d6/f837a19d042144f1a7ce348275441129/FLAGb08510886 [2021-08-25 23:40:29,367 INFO L306 CDTParser]: Found 1 translation units. [2021-08-25 23:40:29,367 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_7.i [2021-08-25 23:40:29,372 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247c117d6/f837a19d042144f1a7ce348275441129/FLAGb08510886 [2021-08-25 23:40:29,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/247c117d6/f837a19d042144f1a7ce348275441129 [2021-08-25 23:40:29,806 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-25 23:40:29,807 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-25 23:40:29,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-25 23:40:29,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-25 23:40:29,812 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-25 23:40:29,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:40:29" (1/1) ... [2021-08-25 23:40:29,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a419ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:29, skipping insertion in model container [2021-08-25 23:40:29,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.08 11:40:29" (1/1) ... [2021-08-25 23:40:29,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-25 23:40:29,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-25 23:40:29,914 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-08-25 23:40:29,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:40:29,923 INFO L203 MainTranslator]: Completed pre-run [2021-08-25 23:40:29,974 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_7.i[1224,1237] [2021-08-25 23:40:29,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-25 23:40:29,983 INFO L208 MainTranslator]: Completed translation [2021-08-25 23:40:29,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:29 WrapperNode [2021-08-25 23:40:29,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-25 23:40:29,984 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-25 23:40:29,984 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-25 23:40:29,984 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-25 23:40:29,988 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:29" (1/1) ... [2021-08-25 23:40:29,994 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:29" (1/1) ... [2021-08-25 23:40:30,005 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-25 23:40:30,005 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-25 23:40:30,005 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-25 23:40:30,006 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-25 23:40:30,010 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:29" (1/1) ... [2021-08-25 23:40:30,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:29" (1/1) ... [2021-08-25 23:40:30,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:29" (1/1) ... [2021-08-25 23:40:30,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:29" (1/1) ... [2021-08-25 23:40:30,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:29" (1/1) ... [2021-08-25 23:40:30,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:29" (1/1) ... [2021-08-25 23:40:30,018 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:29" (1/1) ... [2021-08-25 23:40:30,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-25 23:40:30,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-25 23:40:30,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-25 23:40:30,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-25 23:40:30,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:29" (1/1) ... [2021-08-25 23:40:30,025 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-25 23:40:30,029 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-25 23:40:30,050 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-25 23:40:30,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-25 23:40:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-25 23:40:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-25 23:40:30,087 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-25 23:40:30,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-25 23:40:36,947 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-25 23:40:36,948 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-08-25 23:40:36,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:40:36 BoogieIcfgContainer [2021-08-25 23:40:36,949 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-25 23:40:36,952 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-25 23:40:36,957 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-25 23:40:36,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-25 23:40:36,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.08 11:40:29" (1/3) ... [2021-08-25 23:40:36,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ef4e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:40:36, skipping insertion in model container [2021-08-25 23:40:36,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.08 11:40:29" (2/3) ... [2021-08-25 23:40:36,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ef4e6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.08 11:40:36, skipping insertion in model container [2021-08-25 23:40:36,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:40:36" (3/3) ... [2021-08-25 23:40:36,967 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_7.i [2021-08-25 23:40:36,970 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-25 23:40:36,989 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-25 23:40:37,034 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-25 23:40:37,039 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-25 23:40:37,039 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-25 23:40:37,047 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:40:37,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-25 23:40:37,049 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:40:37,050 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:40:37,050 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:40:37,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:40:37,053 INFO L82 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-08-25 23:40:37,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 23:40:37,060 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [490483417] [2021-08-25 23:40:37,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:40:37,061 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 23:40:37,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 23:40:37,063 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 23:40:37,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-25 23:40:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-25 23:40:38,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2021-08-25 23:40:38,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-25 23:40:38,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:40:38,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-25 23:40:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-25 23:40:38,212 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-25 23:40:38,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [490483417] [2021-08-25 23:40:38,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [490483417] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-25 23:40:38,213 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-25 23:40:38,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-25 23:40:38,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490934038] [2021-08-25 23:40:38,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-08-25 23:40:38,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-25 23:40:38,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-08-25 23:40:38,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:40:38,230 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:40:38,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-25 23:40:38,245 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-08-25 23:40:38,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-25 23:40:38,250 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-25 23:40:38,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-25 23:40:38,268 INFO L225 Difference]: With dead ends: 23 [2021-08-25 23:40:38,269 INFO L226 Difference]: Without dead ends: 9 [2021-08-25 23:40:38,271 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-08-25 23:40:38,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-08-25 23:40:38,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-08-25 23:40:38,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:40:38,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-08-25 23:40:38,314 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-08-25 23:40:38,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-25 23:40:38,314 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-08-25 23:40:38,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-25 23:40:38,314 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-08-25 23:40:38,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-25 23:40:38,315 INFO L504 BasicCegarLoop]: Found error trace [2021-08-25 23:40:38,315 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-08-25 23:40:38,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-25 23:40:38,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 23:40:38,529 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-25 23:40:38,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-25 23:40:38,530 INFO L82 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-08-25 23:40:38,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-25 23:40:38,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [507109180] [2021-08-25 23:40:38,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-25 23:40:38,531 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-25 23:40:38,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-25 23:40:38,532 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-25 23:40:38,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-25 23:40:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:40:46,992 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-25 23:41:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-25 23:41:42,405 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-25 23:41:42,405 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-08-25 23:41:42,406 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-08-25 23:41:42,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-25 23:41:42,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-25 23:41:42,613 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-25 23:41:42,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.08 11:41:42 BoogieIcfgContainer [2021-08-25 23:41:42,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-25 23:41:42,645 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-25 23:41:42,645 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-25 23:41:42,645 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-25 23:41:42,646 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.08 11:40:36" (3/4) ... [2021-08-25 23:41:42,661 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-25 23:41:42,716 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-25 23:41:42,721 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-25 23:41:42,726 INFO L168 Benchmark]: Toolchain (without parser) took 72914.66 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 35.6 MB in the beginning and 36.7 MB in the end (delta: -1.1 MB). Peak memory consumption was 17.7 MB. Max. memory is 16.1 GB. [2021-08-25 23:41:42,727 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 38.7 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:41:42,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 174.12 ms. Allocated memory is still 56.6 MB. Free memory was 35.3 MB in the beginning and 39.5 MB in the end (delta: -4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-25 23:41:42,728 INFO L168 Benchmark]: Boogie Procedure Inliner took 20.85 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 37.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:41:42,729 INFO L168 Benchmark]: Boogie Preprocessor took 14.52 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 36.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-25 23:41:42,729 INFO L168 Benchmark]: RCFGBuilder took 6928.60 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 36.6 MB in the beginning and 56.8 MB in the end (delta: -20.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. [2021-08-25 23:41:42,729 INFO L168 Benchmark]: TraceAbstraction took 65691.11 ms. Allocated memory is still 75.5 MB. Free memory was 56.5 MB in the beginning and 38.8 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2021-08-25 23:41:42,729 INFO L168 Benchmark]: Witness Printer took 76.28 ms. Allocated memory is still 75.5 MB. Free memory was 38.8 MB in the beginning and 37.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-25 23:41:42,744 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 56.6 MB. Free memory was 38.7 MB in the beginning and 38.7 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 174.12 ms. Allocated memory is still 56.6 MB. Free memory was 35.3 MB in the beginning and 39.5 MB in the end (delta: -4.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 20.85 ms. Allocated memory is still 56.6 MB. Free memory was 39.4 MB in the beginning and 37.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 14.52 ms. Allocated memory is still 56.6 MB. Free memory was 37.8 MB in the beginning and 36.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 6928.60 ms. Allocated memory was 56.6 MB in the beginning and 75.5 MB in the end (delta: 18.9 MB). Free memory was 36.6 MB in the beginning and 56.8 MB in the end (delta: -20.2 MB). Peak memory consumption was 11.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 65691.11 ms. Allocated memory is still 75.5 MB. Free memory was 56.5 MB in the beginning and 38.8 MB in the end (delta: 17.7 MB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. * Witness Printer took 76.28 ms. Allocated memory is still 75.5 MB. Free memory was 38.8 MB in the beginning and 37.1 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 42]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L30] float IN = __VERIFIER_nondet_float(); [L15] COND FALSE !(!cond) [L20] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L25] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L33] float x = IN - f(IN)/fp(IN); [L41] COND TRUE !(x < 0.1) [L42] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 65578.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 5.3ms, AutomataDifference: 53.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 5.3ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 12 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.9ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 25.1ms SsaConstructionTime, 9308.5ms SatisfiabilityAnalysisTime, 222.0ms InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 32 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-08-25 23:41:42,952 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...