./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_4.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 44e41a637fa9468dc0732b4bb0eab375ec0174d4f214854050209bd1011a360f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 00:57:27,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 00:57:27,159 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 00:57:27,206 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 00:57:27,207 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 00:57:27,208 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 00:57:27,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 00:57:27,216 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 00:57:27,218 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 00:57:27,222 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 00:57:27,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 00:57:27,229 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 00:57:27,229 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 00:57:27,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 00:57:27,231 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 00:57:27,235 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 00:57:27,236 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 00:57:27,237 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 00:57:27,238 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 00:57:27,239 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 00:57:27,240 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 00:57:27,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 00:57:27,245 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 00:57:27,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 00:57:27,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 00:57:27,259 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 00:57:27,260 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 00:57:27,260 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 00:57:27,261 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 00:57:27,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 00:57:27,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 00:57:27,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 00:57:27,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 00:57:27,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 00:57:27,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 00:57:27,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 00:57:27,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 00:57:27,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 00:57:27,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 00:57:27,268 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 00:57:27,269 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 00:57:27,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 00:57:27,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 00:57:27,302 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 00:57:27,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 00:57:27,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 00:57:27,303 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 00:57:27,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 00:57:27,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 00:57:27,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 00:57:27,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 00:57:27,305 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 00:57:27,306 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 00:57:27,306 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 00:57:27,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 00:57:27,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 00:57:27,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 00:57:27,307 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 00:57:27,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 00:57:27,308 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 00:57:27,308 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 00:57:27,308 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 00:57:27,308 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 00:57:27,308 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 00:57:27,309 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 00:57:27,309 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 00:57:27,309 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 00:57:27,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 00:57:27,309 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 00:57:27,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 00:57:27,310 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 00:57:27,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 00:57:27,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 00:57:27,311 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 00:57:27,311 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 00:57:27,311 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 00:57:27,311 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44e41a637fa9468dc0732b4bb0eab375ec0174d4f214854050209bd1011a360f [2022-07-21 00:57:27,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 00:57:27,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 00:57:27,689 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 00:57:27,690 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 00:57:27,691 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 00:57:27,692 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_4.i [2022-07-21 00:57:27,764 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de37e4e1a/ef17d408dee747be8c508d75aa49ce5a/FLAGf827361f6 [2022-07-21 00:57:28,232 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 00:57:28,233 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_4.i [2022-07-21 00:57:28,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de37e4e1a/ef17d408dee747be8c508d75aa49ce5a/FLAGf827361f6 [2022-07-21 00:57:28,639 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de37e4e1a/ef17d408dee747be8c508d75aa49ce5a [2022-07-21 00:57:28,641 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 00:57:28,642 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 00:57:28,645 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 00:57:28,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 00:57:28,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 00:57:28,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:57:28" (1/1) ... [2022-07-21 00:57:28,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c0b8328 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:28, skipping insertion in model container [2022-07-21 00:57:28,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:57:28" (1/1) ... [2022-07-21 00:57:28,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 00:57:28,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 00:57:28,804 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_4.i[1743,1756] [2022-07-21 00:57:28,809 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 00:57:28,816 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 00:57:28,845 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_4.i[1743,1756] [2022-07-21 00:57:28,851 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 00:57:28,869 INFO L208 MainTranslator]: Completed translation [2022-07-21 00:57:28,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:28 WrapperNode [2022-07-21 00:57:28,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 00:57:28,872 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 00:57:28,872 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 00:57:28,872 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 00:57:28,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:28" (1/1) ... [2022-07-21 00:57:28,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:28" (1/1) ... [2022-07-21 00:57:28,922 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2022-07-21 00:57:28,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 00:57:28,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 00:57:28,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 00:57:28,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 00:57:28,930 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:28" (1/1) ... [2022-07-21 00:57:28,931 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:28" (1/1) ... [2022-07-21 00:57:28,943 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:28" (1/1) ... [2022-07-21 00:57:28,943 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:28" (1/1) ... [2022-07-21 00:57:28,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:28" (1/1) ... [2022-07-21 00:57:28,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:28" (1/1) ... [2022-07-21 00:57:28,961 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:28" (1/1) ... [2022-07-21 00:57:28,963 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 00:57:28,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 00:57:28,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 00:57:28,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 00:57:28,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:28" (1/1) ... [2022-07-21 00:57:28,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 00:57:28,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:57:28,997 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) [2022-07-21 00:57:29,027 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 [2022-07-21 00:57:29,041 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 00:57:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-21 00:57:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-21 00:57:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-21 00:57:29,042 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-21 00:57:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 00:57:29,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 00:57:29,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 00:57:29,091 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 00:57:29,093 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 00:57:29,234 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 00:57:29,239 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 00:57:29,240 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 00:57:29,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:57:29 BoogieIcfgContainer [2022-07-21 00:57:29,242 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 00:57:29,243 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 00:57:29,243 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 00:57:29,245 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 00:57:29,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:57:28" (1/3) ... [2022-07-21 00:57:29,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a26fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:57:29, skipping insertion in model container [2022-07-21 00:57:29,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:28" (2/3) ... [2022-07-21 00:57:29,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44a26fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:57:29, skipping insertion in model container [2022-07-21 00:57:29,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:57:29" (3/3) ... [2022-07-21 00:57:29,248 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_4.i [2022-07-21 00:57:29,261 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 00:57:29,262 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 00:57:29,325 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 00:57:29,334 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6881e108, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@23f94a3a [2022-07-21 00:57:29,335 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 00:57:29,343 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) [2022-07-21 00:57:29,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-21 00:57:29,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:57:29,358 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:57:29,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:57:29,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:57:29,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2022-07-21 00:57:29,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:57:29,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544864435] [2022-07-21 00:57:29,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:57:29,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:57:29,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:57:29,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-21 00:57:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:57:29,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 00:57:29,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:57:29,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 00:57:29,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:57:29,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 00:57:29,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:57:29,569 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 00:57:29,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 00:57:29,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544864435] [2022-07-21 00:57:29,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544864435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:57:29,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:57:29,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 00:57:29,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247261531] [2022-07-21 00:57:29,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:57:29,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 00:57:29,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 00:57:29,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 00:57:29,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 00:57:29,611 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) [2022-07-21 00:57:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:57:29,629 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-07-21 00:57:29,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 00:57:29,632 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 [2022-07-21 00:57:29,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:57:29,639 INFO L225 Difference]: With dead ends: 43 [2022-07-21 00:57:29,639 INFO L226 Difference]: Without dead ends: 19 [2022-07-21 00:57:29,643 INFO L412 NwaCegarLoop]: 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 [2022-07-21 00:57:29,650 INFO L413 NwaCegarLoop]: 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 [2022-07-21 00:57:29,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 00:57:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-21 00:57:29,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-21 00:57:29,686 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) [2022-07-21 00:57:29,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-07-21 00:57:29,689 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2022-07-21 00:57:29,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:57:29,690 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-07-21 00:57:29,691 INFO L496 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) [2022-07-21 00:57:29,691 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-07-21 00:57:29,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-21 00:57:29,696 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:57:29,696 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:57:29,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 00:57:29,697 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:57:29,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:57:29,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2022-07-21 00:57:29,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 00:57:29,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866323818] [2022-07-21 00:57:29,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:57:29,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 00:57:29,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 00:57:29,745 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 00:57:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 00:57:29,801 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 00:57:29,802 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 00:57:29,805 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 00:57:29,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 00:57:29,813 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-21 00:57:29,817 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 00:57:29,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 12:57:29 BoogieIcfgContainer [2022-07-21 00:57:29,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 00:57:29,848 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 00:57:29,848 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 00:57:29,848 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 00:57:29,849 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:57:29" (3/4) ... [2022-07-21 00:57:29,852 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-21 00:57:29,852 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 00:57:29,853 INFO L158 Benchmark]: Toolchain (without parser) took 1210.09ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 24.0MB in the beginning and 38.3MB in the end (delta: -14.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 00:57:29,854 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 48.2MB. Free memory was 30.3MB in the beginning and 30.2MB in the end (delta: 43.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 00:57:29,857 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.08ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 23.8MB in the beginning and 44.6MB in the end (delta: -20.9MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. [2022-07-21 00:57:29,858 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.41ms. Allocated memory is still 60.8MB. Free memory was 44.5MB in the beginning and 43.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 00:57:29,860 INFO L158 Benchmark]: Boogie Preprocessor took 40.22ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 41.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 00:57:29,861 INFO L158 Benchmark]: RCFGBuilder took 277.53ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 33.4MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-21 00:57:29,862 INFO L158 Benchmark]: TraceAbstraction took 603.93ms. Allocated memory is still 60.8MB. Free memory was 32.8MB in the beginning and 38.9MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 00:57:29,864 INFO L158 Benchmark]: Witness Printer took 4.11ms. Allocated memory is still 60.8MB. Free memory was 38.6MB in the beginning and 38.3MB in the end (delta: 278.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 00:57:29,870 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 48.2MB. Free memory was 30.3MB in the beginning and 30.2MB in the end (delta: 43.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.08ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 23.8MB in the beginning and 44.6MB in the end (delta: -20.9MB). Peak memory consumption was 4.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 50.41ms. Allocated memory is still 60.8MB. Free memory was 44.5MB in the beginning and 43.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 40.22ms. Allocated memory is still 60.8MB. Free memory was 43.1MB in the beginning and 41.9MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 277.53ms. Allocated memory is still 60.8MB. Free memory was 41.9MB in the beginning and 33.4MB in the end (delta: 8.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 603.93ms. Allocated memory is still 60.8MB. Free memory was 32.8MB in the beginning and 38.9MB in the end (delta: -6.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.11ms. Allocated memory is still 60.8MB. Free memory was 38.6MB in the beginning and 38.3MB in the end (delta: 278.8kB). 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 > -0.8f && IN < 0.8f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [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: 0.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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, 0.0s 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 [2022-07-21 00:57:29,920 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... --- 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_4.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 44e41a637fa9468dc0732b4bb0eab375ec0174d4f214854050209bd1011a360f --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 00:57:31,900 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 00:57:31,903 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 00:57:31,960 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 00:57:31,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 00:57:31,963 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 00:57:31,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 00:57:31,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 00:57:31,974 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 00:57:31,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 00:57:31,982 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 00:57:31,984 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 00:57:31,985 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 00:57:31,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 00:57:31,988 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 00:57:31,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 00:57:31,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 00:57:31,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 00:57:32,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 00:57:32,005 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 00:57:32,008 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 00:57:32,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 00:57:32,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 00:57:32,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 00:57:32,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 00:57:32,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 00:57:32,018 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 00:57:32,019 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 00:57:32,020 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 00:57:32,020 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 00:57:32,021 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 00:57:32,021 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 00:57:32,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 00:57:32,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 00:57:32,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 00:57:32,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 00:57:32,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 00:57:32,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 00:57:32,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 00:57:32,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 00:57:32,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 00:57:32,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 00:57:32,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-21 00:57:32,072 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 00:57:32,073 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 00:57:32,073 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 00:57:32,073 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 00:57:32,074 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 00:57:32,074 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 00:57:32,075 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 00:57:32,075 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 00:57:32,075 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 00:57:32,076 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 00:57:32,077 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 00:57:32,077 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 00:57:32,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 00:57:32,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 00:57:32,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 00:57:32,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 00:57:32,078 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 00:57:32,078 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 00:57:32,078 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 00:57:32,078 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 00:57:32,079 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 00:57:32,079 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 00:57:32,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 00:57:32,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 00:57:32,080 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 00:57:32,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 00:57:32,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 00:57:32,080 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 00:57:32,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 00:57:32,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 00:57:32,081 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 00:57:32,081 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 00:57:32,081 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 00:57:32,082 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 00:57:32,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 00:57:32,082 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 00:57:32,082 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44e41a637fa9468dc0732b4bb0eab375ec0174d4f214854050209bd1011a360f [2022-07-21 00:57:32,403 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 00:57:32,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 00:57:32,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 00:57:32,434 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 00:57:32,435 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 00:57:32,437 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_4.i [2022-07-21 00:57:32,503 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1650816/a432a125a067458da4ea1e6a9022b9f0/FLAG3e9d95a56 [2022-07-21 00:57:32,918 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 00:57:32,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_4.i [2022-07-21 00:57:32,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1650816/a432a125a067458da4ea1e6a9022b9f0/FLAG3e9d95a56 [2022-07-21 00:57:33,328 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1650816/a432a125a067458da4ea1e6a9022b9f0 [2022-07-21 00:57:33,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 00:57:33,334 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 00:57:33,336 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 00:57:33,336 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 00:57:33,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 00:57:33,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:57:33" (1/1) ... [2022-07-21 00:57:33,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@269d1887 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:33, skipping insertion in model container [2022-07-21 00:57:33,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 12:57:33" (1/1) ... [2022-07-21 00:57:33,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 00:57:33,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 00:57:33,519 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_4.i[1743,1756] [2022-07-21 00:57:33,522 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 00:57:33,533 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 00:57:33,598 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_4.i[1743,1756] [2022-07-21 00:57:33,599 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 00:57:33,615 INFO L208 MainTranslator]: Completed translation [2022-07-21 00:57:33,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:33 WrapperNode [2022-07-21 00:57:33,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 00:57:33,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 00:57:33,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 00:57:33,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 00:57:33,625 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:33" (1/1) ... [2022-07-21 00:57:33,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:33" (1/1) ... [2022-07-21 00:57:33,658 INFO L137 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2022-07-21 00:57:33,659 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 00:57:33,660 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 00:57:33,660 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 00:57:33,660 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 00:57:33,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:33" (1/1) ... [2022-07-21 00:57:33,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:33" (1/1) ... [2022-07-21 00:57:33,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:33" (1/1) ... [2022-07-21 00:57:33,676 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:33" (1/1) ... [2022-07-21 00:57:33,698 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:33" (1/1) ... [2022-07-21 00:57:33,700 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:33" (1/1) ... [2022-07-21 00:57:33,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:33" (1/1) ... [2022-07-21 00:57:33,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 00:57:33,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 00:57:33,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 00:57:33,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 00:57:33,713 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:33" (1/1) ... [2022-07-21 00:57:33,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 00:57:33,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 00:57:33,740 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) [2022-07-21 00:57:33,756 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 [2022-07-21 00:57:33,783 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 00:57:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-21 00:57:33,784 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-21 00:57:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-21 00:57:33,784 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-21 00:57:33,785 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-21 00:57:33,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 00:57:33,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 00:57:33,854 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 00:57:33,856 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 00:57:40,582 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 00:57:40,586 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 00:57:40,587 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 00:57:40,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:57:40 BoogieIcfgContainer [2022-07-21 00:57:40,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 00:57:40,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 00:57:40,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 00:57:40,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 00:57:40,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 12:57:33" (1/3) ... [2022-07-21 00:57:40,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ded1a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:57:40, skipping insertion in model container [2022-07-21 00:57:40,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 12:57:33" (2/3) ... [2022-07-21 00:57:40,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ded1a81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 12:57:40, skipping insertion in model container [2022-07-21 00:57:40,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 12:57:40" (3/3) ... [2022-07-21 00:57:40,597 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_4.i [2022-07-21 00:57:40,618 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 00:57:40,619 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 00:57:40,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 00:57:40,664 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3baf2684, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3c5d31c0 [2022-07-21 00:57:40,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 00:57:40,668 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) [2022-07-21 00:57:40,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-21 00:57:40,675 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:57:40,675 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:57:40,676 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:57:40,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:57:40,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2022-07-21 00:57:40,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 00:57:40,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [495119295] [2022-07-21 00:57:40,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:57:40,692 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 00:57:40,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 00:57:40,699 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) [2022-07-21 00:57:40,713 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 00:57:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 00:57:42,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 00:57:42,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 00:57:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-21 00:57:42,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 00:57:42,621 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 00:57:42,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [495119295] [2022-07-21 00:57:42,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [495119295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 00:57:42,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 00:57:42,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 00:57:42,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178962198] [2022-07-21 00:57:42,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 00:57:42,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 00:57:42,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 00:57:42,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 00:57:42,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-21 00:57:42,655 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) [2022-07-21 00:57:42,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 00:57:42,674 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-07-21 00:57:42,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 00:57:42,676 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 [2022-07-21 00:57:42,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 00:57:42,682 INFO L225 Difference]: With dead ends: 43 [2022-07-21 00:57:42,682 INFO L226 Difference]: Without dead ends: 19 [2022-07-21 00:57:42,685 INFO L412 NwaCegarLoop]: 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 [2022-07-21 00:57:42,690 INFO L413 NwaCegarLoop]: 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 [2022-07-21 00:57:42,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 00:57:42,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-21 00:57:42,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-21 00:57:42,726 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) [2022-07-21 00:57:42,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-07-21 00:57:42,728 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2022-07-21 00:57:42,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 00:57:42,729 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-07-21 00:57:42,729 INFO L496 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) [2022-07-21 00:57:42,729 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-07-21 00:57:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-21 00:57:42,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 00:57:42,731 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 00:57:42,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-21 00:57:42,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 00:57:42,941 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 00:57:42,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 00:57:42,941 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2022-07-21 00:57:42,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 00:57:42,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [137411475] [2022-07-21 00:57:42,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 00:57:42,943 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 00:57:42,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 00:57:42,944 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) [2022-07-21 00:57:42,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process