./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_2_3.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 3d5cf3d3f6a66e0fec35a8df9c97421970e8f4a2d8e4987399460faf7d39825c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:43:12,780 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:43:12,788 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:43:12,818 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:43:12,819 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:43:12,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:43:12,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:43:12,824 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:43:12,826 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:43:12,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:43:12,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:43:12,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:43:12,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:43:12,832 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:43:12,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:43:12,834 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:43:12,839 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:43:12,843 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:43:12,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:43:12,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:43:12,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:43:12,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:43:12,849 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:43:12,850 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:43:12,852 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:43:12,852 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:43:12,852 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:43:12,853 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:43:12,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:43:12,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:43:12,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:43:12,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:43:12,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:43:12,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:43:12,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:43:12,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:43:12,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:43:12,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:43:12,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:43:12,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:43:12,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:43:12,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 11:43:12,889 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:43:12,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:43:12,890 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:43:12,890 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:43:12,890 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:43:12,891 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:43:12,891 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:43:12,891 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:43:12,891 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:43:12,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:43:12,892 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:43:12,893 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 11:43:12,893 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:43:12,893 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:43:12,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:43:12,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:43:12,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:43:12,894 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:43:12,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:43:12,894 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:43:12,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:43:12,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:43:12,894 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:43:12,894 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:43:12,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:43:12,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:43:12,895 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:43:12,895 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:43:12,895 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 11:43:12,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 11:43:12,896 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:43:12,896 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:43:12,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:43:12,896 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:43:12,896 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d5cf3d3f6a66e0fec35a8df9c97421970e8f4a2d8e4987399460faf7d39825c [2021-12-21 11:43:13,053 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:43:13,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:43:13,071 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:43:13,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:43:13,073 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:43:13,073 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_3.i [2021-12-21 11:43:13,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dffe00a1f/ca95a4fece6f434a8ccb5c628ec1b4ac/FLAG5a6105c1d [2021-12-21 11:43:13,446 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:43:13,447 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_3.i [2021-12-21 11:43:13,451 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dffe00a1f/ca95a4fece6f434a8ccb5c628ec1b4ac/FLAG5a6105c1d [2021-12-21 11:43:13,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dffe00a1f/ca95a4fece6f434a8ccb5c628ec1b4ac [2021-12-21 11:43:13,906 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:43:13,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:43:13,908 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:43:13,908 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:43:13,910 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:43:13,911 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:43:13" (1/1) ... [2021-12-21 11:43:13,912 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61e54180 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:13, skipping insertion in model container [2021-12-21 11:43:13,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:43:13" (1/1) ... [2021-12-21 11:43:13,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:43:13,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:43:14,037 WARN L230 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_2_3.i[1743,1756] [2021-12-21 11:43:14,039 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:43:14,043 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:43:14,053 WARN L230 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_2_3.i[1743,1756] [2021-12-21 11:43:14,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:43:14,073 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:43:14,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:14 WrapperNode [2021-12-21 11:43:14,073 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:43:14,074 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:43:14,074 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:43:14,074 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:43:14,078 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:14" (1/1) ... [2021-12-21 11:43:14,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:14" (1/1) ... [2021-12-21 11:43:14,094 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2021-12-21 11:43:14,094 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:43:14,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:43:14,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:43:14,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:43:14,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:14" (1/1) ... [2021-12-21 11:43:14,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:14" (1/1) ... [2021-12-21 11:43:14,100 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:14" (1/1) ... [2021-12-21 11:43:14,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:14" (1/1) ... [2021-12-21 11:43:14,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:14" (1/1) ... [2021-12-21 11:43:14,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:14" (1/1) ... [2021-12-21 11:43:14,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:14" (1/1) ... [2021-12-21 11:43:14,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:43:14,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:43:14,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:43:14,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:43:14,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:14" (1/1) ... [2021-12-21 11:43:14,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:43:14,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:43:14,136 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) [2021-12-21 11:43:14,154 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 [2021-12-21 11:43:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:43:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-21 11:43:14,164 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-21 11:43:14,164 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-21 11:43:14,164 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-21 11:43:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 11:43:14,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:43:14,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:43:14,210 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:43:14,211 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:43:14,279 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:43:14,282 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:43:14,283 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 11:43:14,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:43:14 BoogieIcfgContainer [2021-12-21 11:43:14,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:43:14,285 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:43:14,285 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:43:14,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:43:14,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:43:13" (1/3) ... [2021-12-21 11:43:14,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a5e857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:43:14, skipping insertion in model container [2021-12-21 11:43:14,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:14" (2/3) ... [2021-12-21 11:43:14,289 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12a5e857 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:43:14, skipping insertion in model container [2021-12-21 11:43:14,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:43:14" (3/3) ... [2021-12-21 11:43:14,290 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_3.i [2021-12-21 11:43:14,293 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:43:14,293 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 11:43:14,319 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:43:14,323 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-12-21 11:43:14,323 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 11:43:14,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:43:14,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 11:43:14,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:43:14,352 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:43:14,353 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:43:14,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:43:14,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2021-12-21 11:43:14,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:43:14,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159081049] [2021-12-21 11:43:14,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:43:14,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:43:14,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:43:14,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 11:43:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:43:14,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 11:43:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:43:14,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 11:43:14,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:43:14,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 11:43:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:43:14,571 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-21 11:43:14,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:43:14,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159081049] [2021-12-21 11:43:14,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159081049] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:43:14,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:43:14,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:43:14,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679076267] [2021-12-21 11:43:14,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:43:14,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 11:43:14,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:43:14,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 11:43:14,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:43:14,599 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-21 11:43:14,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:43:14,614 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-12-21 11:43:14,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 11:43:14,616 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2021-12-21 11:43:14,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:43:14,620 INFO L225 Difference]: With dead ends: 43 [2021-12-21 11:43:14,620 INFO L226 Difference]: Without dead ends: 19 [2021-12-21 11:43:14,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:43:14,627 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 11:43:14,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 11:43:14,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-21 11:43:14,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-21 11:43:14,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:43:14,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-21 11:43:14,668 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2021-12-21 11:43:14,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:43:14,669 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-21 11:43:14,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-21 11:43:14,669 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-21 11:43:14,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 11:43:14,673 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:43:14,673 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:43:14,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 11:43:14,675 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:43:14,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:43:14,677 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2021-12-21 11:43:14,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:43:14,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565767948] [2021-12-21 11:43:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:43:14,679 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:43:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 11:43:14,702 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 11:43:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 11:43:14,723 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 11:43:14,723 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 11:43:14,724 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 11:43:14,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 11:43:14,729 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-21 11:43:14,732 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 11:43:14,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:43:14 BoogieIcfgContainer [2021-12-21 11:43:14,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 11:43:14,748 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 11:43:14,748 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 11:43:14,748 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 11:43:14,749 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:43:14" (3/4) ... [2021-12-21 11:43:14,750 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 11:43:14,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 11:43:14,751 INFO L158 Benchmark]: Toolchain (without parser) took 843.95ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 57.8MB in the beginning and 80.7MB in the end (delta: -22.9MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:43:14,751 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 47.2MB in the beginning and 47.2MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:43:14,752 INFO L158 Benchmark]: CACSL2BoogieTranslator took 164.95ms. Allocated memory is still 90.2MB. Free memory was 57.7MB in the beginning and 66.3MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 11:43:14,752 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.21ms. Allocated memory is still 90.2MB. Free memory was 66.3MB in the beginning and 64.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 11:43:14,752 INFO L158 Benchmark]: Boogie Preprocessor took 10.47ms. Allocated memory is still 90.2MB. Free memory was 64.9MB in the beginning and 63.9MB in the end (delta: 976.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:43:14,752 INFO L158 Benchmark]: RCFGBuilder took 178.66ms. Allocated memory is still 90.2MB. Free memory was 63.9MB in the beginning and 55.2MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 11:43:14,753 INFO L158 Benchmark]: TraceAbstraction took 462.47ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 54.5MB in the beginning and 80.7MB in the end (delta: -26.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:43:14,753 INFO L158 Benchmark]: Witness Printer took 2.35ms. Allocated memory is still 109.1MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:43:14,755 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 90.2MB. Free memory was 47.2MB in the beginning and 47.2MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 164.95ms. Allocated memory is still 90.2MB. Free memory was 57.7MB in the beginning and 66.3MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 20.21ms. Allocated memory is still 90.2MB. Free memory was 66.3MB in the beginning and 64.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 10.47ms. Allocated memory is still 90.2MB. Free memory was 64.9MB in the beginning and 63.9MB in the end (delta: 976.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 178.66ms. Allocated memory is still 90.2MB. Free memory was 63.9MB in the beginning and 55.2MB in the end (delta: 8.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 462.47ms. Allocated memory was 90.2MB in the beginning and 109.1MB in the end (delta: 18.9MB). Free memory was 54.5MB in the beginning and 80.7MB in the end (delta: -26.3MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.35ms. Allocated memory is still 109.1MB. Free memory is still 80.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 51]: 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 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L42] CALL, EXPR f(IN) VAL [\old(x)=49] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L42] RET, EXPR f(IN) VAL [f(IN)=50, IN=49] [L42] CALL, EXPR fp(IN) VAL [\old(x)=49] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L42] RET, EXPR fp(IN) VAL [f(IN)=50, fp(IN)=53, IN=49] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=51] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=51, x=51] [L44] RET, EXPR f(x) VAL [f(x)=52, IN=49, x=51] [L44] CALL, EXPR fp(x) VAL [\old(x)=51] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=51, x=51] [L44] RET, EXPR fp(x) VAL [f(x)=52, fp(x)=54, IN=49, x=51] [L44] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=49] [L51] reach_error() VAL [IN=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 24 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 6/6 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 [2021-12-21 11:43:14,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_2_3.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 3d5cf3d3f6a66e0fec35a8df9c97421970e8f4a2d8e4987399460faf7d39825c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:43:16,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:43:16,368 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:43:16,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:43:16,408 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:43:16,410 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:43:16,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:43:16,414 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:43:16,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:43:16,420 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:43:16,421 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:43:16,424 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:43:16,424 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:43:16,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:43:16,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:43:16,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:43:16,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:43:16,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:43:16,433 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:43:16,437 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:43:16,438 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:43:16,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:43:16,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:43:16,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:43:16,445 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:43:16,446 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:43:16,446 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:43:16,447 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:43:16,447 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:43:16,448 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:43:16,448 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:43:16,448 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:43:16,449 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:43:16,450 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:43:16,451 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:43:16,451 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:43:16,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:43:16,452 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:43:16,452 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:43:16,453 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:43:16,453 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:43:16,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-21 11:43:16,487 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:43:16,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:43:16,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:43:16,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:43:16,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:43:16,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:43:16,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:43:16,489 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:43:16,489 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:43:16,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:43:16,490 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:43:16,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:43:16,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:43:16,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:43:16,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:43:16,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:43:16,491 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 11:43:16,491 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 11:43:16,491 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 11:43:16,491 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:43:16,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:43:16,492 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:43:16,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:43:16,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:43:16,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:43:16,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:43:16,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:43:16,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:43:16,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:43:16,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:43:16,493 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 11:43:16,493 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 11:43:16,493 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:43:16,493 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:43:16,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:43:16,494 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:43:16,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 11:43:16,494 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3d5cf3d3f6a66e0fec35a8df9c97421970e8f4a2d8e4987399460faf7d39825c [2021-12-21 11:43:16,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:43:16,781 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:43:16,783 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:43:16,784 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:43:16,784 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:43:16,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_3.i [2021-12-21 11:43:16,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb8caf773/9bbf3f04d2dc462889788c37283898ce/FLAG1e52f3301 [2021-12-21 11:43:17,198 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:43:17,199 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_3.i [2021-12-21 11:43:17,204 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb8caf773/9bbf3f04d2dc462889788c37283898ce/FLAG1e52f3301 [2021-12-21 11:43:17,216 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bb8caf773/9bbf3f04d2dc462889788c37283898ce [2021-12-21 11:43:17,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:43:17,220 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:43:17,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:43:17,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:43:17,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:43:17,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:43:17" (1/1) ... [2021-12-21 11:43:17,226 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532540ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:17, skipping insertion in model container [2021-12-21 11:43:17,226 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:43:17" (1/1) ... [2021-12-21 11:43:17,231 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:43:17,241 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:43:17,373 WARN L230 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_2_3.i[1743,1756] [2021-12-21 11:43:17,376 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:43:17,384 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:43:17,431 WARN L230 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_2_3.i[1743,1756] [2021-12-21 11:43:17,437 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:43:17,449 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:43:17,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:17 WrapperNode [2021-12-21 11:43:17,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:43:17,450 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:43:17,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:43:17,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:43:17,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:17" (1/1) ... [2021-12-21 11:43:17,468 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:17" (1/1) ... [2021-12-21 11:43:17,480 INFO L137 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2021-12-21 11:43:17,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:43:17,481 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:43:17,481 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:43:17,481 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:43:17,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:17" (1/1) ... [2021-12-21 11:43:17,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:17" (1/1) ... [2021-12-21 11:43:17,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:17" (1/1) ... [2021-12-21 11:43:17,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:17" (1/1) ... [2021-12-21 11:43:17,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:17" (1/1) ... [2021-12-21 11:43:17,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:17" (1/1) ... [2021-12-21 11:43:17,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:17" (1/1) ... [2021-12-21 11:43:17,513 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:43:17,514 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:43:17,514 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:43:17,514 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:43:17,515 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:17" (1/1) ... [2021-12-21 11:43:17,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:43:17,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:43:17,535 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) [2021-12-21 11:43:17,559 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 [2021-12-21 11:43:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:43:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-21 11:43:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-21 11:43:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 11:43:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-21 11:43:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-21 11:43:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:43:17,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:43:17,603 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:43:17,604 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:43:23,397 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:43:23,401 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:43:23,401 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 11:43:23,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:43:23 BoogieIcfgContainer [2021-12-21 11:43:23,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:43:23,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:43:23,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:43:23,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:43:23,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:43:17" (1/3) ... [2021-12-21 11:43:23,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3817512e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:43:23, skipping insertion in model container [2021-12-21 11:43:23,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:17" (2/3) ... [2021-12-21 11:43:23,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3817512e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:43:23, skipping insertion in model container [2021-12-21 11:43:23,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:43:23" (3/3) ... [2021-12-21 11:43:23,409 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_3.i [2021-12-21 11:43:23,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:43:23,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 11:43:23,450 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:43:23,455 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, 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 [2021-12-21 11:43:23,455 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 11:43:23,463 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:43:23,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 11:43:23,466 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:43:23,467 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:43:23,467 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:43:23,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:43:23,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2021-12-21 11:43:23,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:43:23,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1475251239] [2021-12-21 11:43:23,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:43:23,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:43:23,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:43:23,488 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) [2021-12-21 11:43:23,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 11:43:25,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:43:25,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 11:43:25,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:43:25,388 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-21 11:43:25,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:43:25,389 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:43:25,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1475251239] [2021-12-21 11:43:25,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1475251239] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:43:25,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:43:25,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:43:25,391 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038866822] [2021-12-21 11:43:25,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:43:25,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 11:43:25,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:43:25,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 11:43:25,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:43:25,412 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-21 11:43:25,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:43:25,423 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-12-21 11:43:25,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 11:43:25,425 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2021-12-21 11:43:25,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:43:25,428 INFO L225 Difference]: With dead ends: 43 [2021-12-21 11:43:25,429 INFO L226 Difference]: Without dead ends: 19 [2021-12-21 11:43:25,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:43:25,433 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 11:43:25,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 11:43:25,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-21 11:43:25,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-21 11:43:25,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-21 11:43:25,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-21 11:43:25,456 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2021-12-21 11:43:25,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:43:25,456 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-21 11:43:25,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-21 11:43:25,456 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-21 11:43:25,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 11:43:25,457 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:43:25,458 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:43:25,508 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-21 11:43:25,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:43:25,672 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:43:25,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:43:25,672 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2021-12-21 11:43:25,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:43:25,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1519681740] [2021-12-21 11:43:25,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:43:25,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:43:25,673 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:43:25,674 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) [2021-12-21 11:43:25,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process