./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_1.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 0ab5777642cde097746efbdcec62a3bf9c0f2990d306ce817d23d6ae18cd58fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:21:24,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:21:24,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:21:24,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:21:24,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:21:24,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:21:25,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:21:25,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:21:25,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:21:25,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:21:25,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:21:25,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:21:25,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:21:25,010 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:21:25,010 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:21:25,011 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:21:25,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:21:25,013 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:21:25,014 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:21:25,016 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:21:25,017 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:21:25,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:21:25,019 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:21:25,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:21:25,024 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:21:25,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:21:25,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:21:25,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:21:25,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:21:25,036 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:21:25,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:21:25,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:21:25,038 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:21:25,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:21:25,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:21:25,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:21:25,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:21:25,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:21:25,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:21:25,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:21:25,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:21:25,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:21:25,046 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:21:25,072 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:21:25,076 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:21:25,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:21:25,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:21:25,077 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:21:25,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:21:25,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:21:25,078 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:21:25,079 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:21:25,079 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:21:25,080 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:21:25,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:21:25,080 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:21:25,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:21:25,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:21:25,081 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:21:25,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:21:25,081 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:21:25,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:21:25,081 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:21:25,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:21:25,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:21:25,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:21:25,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:21:25,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:21:25,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:21:25,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:21:25,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:21:25,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:21:25,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:21:25,084 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:21:25,084 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:21:25,084 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:21:25,084 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ab5777642cde097746efbdcec62a3bf9c0f2990d306ce817d23d6ae18cd58fa [2022-07-19 13:21:25,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:21:25,353 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:21:25,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:21:25,356 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:21:25,357 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:21:25,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_1.i [2022-07-19 13:21:25,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec7fed9b7/7b80a605017541899360f2531a0f7f01/FLAGd19522abf [2022-07-19 13:21:25,808 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:21:25,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_1.i [2022-07-19 13:21:25,816 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec7fed9b7/7b80a605017541899360f2531a0f7f01/FLAGd19522abf [2022-07-19 13:21:25,835 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ec7fed9b7/7b80a605017541899360f2531a0f7f01 [2022-07-19 13:21:25,837 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:21:25,838 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:21:25,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:21:25,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:21:25,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:21:25,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:21:25" (1/1) ... [2022-07-19 13:21:25,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a802807 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:25, skipping insertion in model container [2022-07-19 13:21:25,848 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:21:25" (1/1) ... [2022-07-19 13:21:25,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:21:25,867 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:21:26,025 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_1.i[1743,1756] [2022-07-19 13:21:26,027 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:21:26,034 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:21:26,048 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_1.i[1743,1756] [2022-07-19 13:21:26,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:21:26,059 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:21:26,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:26 WrapperNode [2022-07-19 13:21:26,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:21:26,061 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:21:26,061 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:21:26,061 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:21:26,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:26" (1/1) ... [2022-07-19 13:21:26,073 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:26" (1/1) ... [2022-07-19 13:21:26,087 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2022-07-19 13:21:26,088 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:21:26,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:21:26,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:21:26,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:21:26,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:26" (1/1) ... [2022-07-19 13:21:26,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:26" (1/1) ... [2022-07-19 13:21:26,096 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:26" (1/1) ... [2022-07-19 13:21:26,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:26" (1/1) ... [2022-07-19 13:21:26,100 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:26" (1/1) ... [2022-07-19 13:21:26,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:26" (1/1) ... [2022-07-19 13:21:26,109 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:26" (1/1) ... [2022-07-19 13:21:26,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:21:26,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:21:26,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:21:26,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:21:26,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:26" (1/1) ... [2022-07-19 13:21:26,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:21:26,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:21:26,146 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) [2022-07-19 13:21:26,151 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 [2022-07-19 13:21:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:21:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-19 13:21:26,172 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-19 13:21:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-19 13:21:26,172 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-19 13:21:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:21:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:21:26,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:21:26,215 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:21:26,216 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:21:26,279 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:21:26,284 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:21:26,285 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:21:26,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:21:26 BoogieIcfgContainer [2022-07-19 13:21:26,286 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:21:26,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:21:26,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:21:26,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:21:26,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:21:25" (1/3) ... [2022-07-19 13:21:26,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10804967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:21:26, skipping insertion in model container [2022-07-19 13:21:26,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:26" (2/3) ... [2022-07-19 13:21:26,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10804967 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:21:26, skipping insertion in model container [2022-07-19 13:21:26,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:21:26" (3/3) ... [2022-07-19 13:21:26,294 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_1.i [2022-07-19 13:21:26,306 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:21:26,306 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:21:26,345 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:21:26,351 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@41a2b769, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@8790dff [2022-07-19 13:21:26,351 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:21:26,355 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) [2022-07-19 13:21:26,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 13:21:26,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:21:26,361 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] [2022-07-19 13:21:26,361 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:21:26,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:21:26,366 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2022-07-19 13:21:26,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:21:26,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388972004] [2022-07-19 13:21:26,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:21:26,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:21:26,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:21:26,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 13:21:26,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:21:26,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 13:21:26,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:21:26,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 13:21:26,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:21:26,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 13:21:26,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:21:26,555 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 13:21:26,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:21:26,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388972004] [2022-07-19 13:21:26,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388972004] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:21:26,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:21:26,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:21:26,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171738805] [2022-07-19 13:21:26,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:21:26,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:21:26,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:21:26,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:21:26,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:21:26,603 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) [2022-07-19 13:21:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:21:26,623 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-07-19 13:21:26,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:21:26,626 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 [2022-07-19 13:21:26,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:21:26,632 INFO L225 Difference]: With dead ends: 43 [2022-07-19 13:21:26,632 INFO L226 Difference]: Without dead ends: 19 [2022-07-19 13:21:26,635 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 [2022-07-19 13:21:26,639 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 [2022-07-19 13:21:26,640 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] [2022-07-19 13:21:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-19 13:21:26,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-19 13:21:26,676 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) [2022-07-19 13:21:26,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-07-19 13:21:26,678 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2022-07-19 13:21:26,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:21:26,679 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-07-19 13:21:26,680 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) [2022-07-19 13:21:26,680 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-07-19 13:21:26,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 13:21:26,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:21:26,683 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] [2022-07-19 13:21:26,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:21:26,683 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:21:26,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:21:26,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2022-07-19 13:21:26,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:21:26,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307125812] [2022-07-19 13:21:26,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:21:26,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:21:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:21:26,722 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:21:26,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:21:26,760 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:21:26,761 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:21:26,763 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:21:26,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 13:21:26,770 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 13:21:26,773 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:21:26,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:21:26 BoogieIcfgContainer [2022-07-19 13:21:26,805 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:21:26,807 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:21:26,807 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:21:26,807 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:21:26,808 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:21:26" (3/4) ... [2022-07-19 13:21:26,810 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:21:26,810 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:21:26,812 INFO L158 Benchmark]: Toolchain (without parser) took 972.22ms. Allocated memory is still 111.1MB. Free memory was 73.3MB in the beginning and 47.8MB in the end (delta: 25.5MB). Peak memory consumption was 24.6MB. Max. memory is 16.1GB. [2022-07-19 13:21:26,812 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory is still 89.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:21:26,813 INFO L158 Benchmark]: CACSL2BoogieTranslator took 217.93ms. Allocated memory is still 111.1MB. Free memory was 73.0MB in the beginning and 86.0MB in the end (delta: -13.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:21:26,815 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.19ms. Allocated memory is still 111.1MB. Free memory was 85.5MB in the beginning and 84.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:21:26,816 INFO L158 Benchmark]: Boogie Preprocessor took 21.04ms. Allocated memory is still 111.1MB. Free memory was 84.4MB in the beginning and 83.4MB in the end (delta: 959.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:21:26,818 INFO L158 Benchmark]: RCFGBuilder took 176.15ms. Allocated memory is still 111.1MB. Free memory was 83.4MB in the beginning and 74.1MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:21:26,819 INFO L158 Benchmark]: TraceAbstraction took 517.50ms. Allocated memory is still 111.1MB. Free memory was 73.6MB in the beginning and 47.8MB in the end (delta: 25.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-07-19 13:21:26,821 INFO L158 Benchmark]: Witness Printer took 3.47ms. Allocated memory is still 111.1MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:21:26,827 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 111.1MB. Free memory is still 89.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 217.93ms. Allocated memory is still 111.1MB. Free memory was 73.0MB in the beginning and 86.0MB in the end (delta: -13.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.19ms. Allocated memory is still 111.1MB. Free memory was 85.5MB in the beginning and 84.4MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.04ms. Allocated memory is still 111.1MB. Free memory was 84.4MB in the beginning and 83.4MB in the end (delta: 959.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 176.15ms. Allocated memory is still 111.1MB. Free memory was 83.4MB in the beginning and 74.1MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 517.50ms. Allocated memory is still 111.1MB. Free memory was 73.6MB in the beginning and 47.8MB in the end (delta: 25.8MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 3.47ms. Allocated memory is still 111.1MB. Free memory is still 47.8MB. 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 > -0.2f && IN < 0.2f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -0.2f && IN < 0.2f) [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, 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 [2022-07-19 13:21:26,870 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_1.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 0ab5777642cde097746efbdcec62a3bf9c0f2990d306ce817d23d6ae18cd58fa --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:21:28,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:21:28,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:21:28,854 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:21:28,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:21:28,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:21:28,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:21:28,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:21:28,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:21:28,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:21:28,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:21:28,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:21:28,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:21:28,874 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:21:28,875 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:21:28,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:21:28,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:21:28,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:21:28,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:21:28,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:21:28,887 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:21:28,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:21:28,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:21:28,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:21:28,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:21:28,897 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:21:28,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:21:28,901 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:21:28,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:21:28,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:21:28,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:21:28,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:21:28,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:21:28,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:21:28,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:21:28,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:21:28,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:21:28,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:21:28,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:21:28,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:21:28,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:21:28,912 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:21:28,913 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:21:28,934 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:21:28,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:21:28,935 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:21:28,935 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:21:28,936 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:21:28,936 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:21:28,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:21:28,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:21:28,937 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:21:28,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:21:28,938 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:21:28,938 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:21:28,948 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:21:28,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:21:28,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:21:28,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:21:28,949 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:21:28,949 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:21:28,949 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:21:28,950 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:21:28,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:21:28,950 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:21:28,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:21:28,951 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:21:28,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:21:28,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:21:28,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:21:28,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:21:28,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:21:28,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:21:28,952 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:21:28,952 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:21:28,953 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:21:28,953 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:21:28,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:21:28,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:21:28,953 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0ab5777642cde097746efbdcec62a3bf9c0f2990d306ce817d23d6ae18cd58fa [2022-07-19 13:21:29,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:21:29,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:21:29,310 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:21:29,312 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:21:29,312 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:21:29,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_1.i [2022-07-19 13:21:29,378 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac524bc32/307fba37c0d642729017e2e1acea8aa9/FLAG14f3792e9 [2022-07-19 13:21:29,820 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:21:29,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_1.i [2022-07-19 13:21:29,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac524bc32/307fba37c0d642729017e2e1acea8aa9/FLAG14f3792e9 [2022-07-19 13:21:29,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac524bc32/307fba37c0d642729017e2e1acea8aa9 [2022-07-19 13:21:29,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:21:29,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:21:29,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:21:29,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:21:29,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:21:29,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:21:29" (1/1) ... [2022-07-19 13:21:29,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35b3abb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:29, skipping insertion in model container [2022-07-19 13:21:29,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:21:29" (1/1) ... [2022-07-19 13:21:29,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:21:29,869 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:21:30,036 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_1.i[1743,1756] [2022-07-19 13:21:30,071 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:21:30,082 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:21:30,113 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_1.i[1743,1756] [2022-07-19 13:21:30,114 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:21:30,128 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:21:30,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:30 WrapperNode [2022-07-19 13:21:30,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:21:30,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:21:30,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:21:30,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:21:30,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:30" (1/1) ... [2022-07-19 13:21:30,159 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:30" (1/1) ... [2022-07-19 13:21:30,174 INFO L137 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2022-07-19 13:21:30,175 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:21:30,175 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:21:30,176 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:21:30,176 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:21:30,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:30" (1/1) ... [2022-07-19 13:21:30,183 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:30" (1/1) ... [2022-07-19 13:21:30,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:30" (1/1) ... [2022-07-19 13:21:30,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:30" (1/1) ... [2022-07-19 13:21:30,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:30" (1/1) ... [2022-07-19 13:21:30,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:30" (1/1) ... [2022-07-19 13:21:30,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:30" (1/1) ... [2022-07-19 13:21:30,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:21:30,213 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:21:30,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:21:30,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:21:30,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:30" (1/1) ... [2022-07-19 13:21:30,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:21:30,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:21:30,246 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) [2022-07-19 13:21:30,269 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 [2022-07-19 13:21:30,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:21:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-19 13:21:30,284 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-19 13:21:30,284 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:21:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-19 13:21:30,285 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-19 13:21:30,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:21:30,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:21:30,353 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:21:30,355 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:21:39,250 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:21:39,255 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:21:39,255 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:21:39,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:21:39 BoogieIcfgContainer [2022-07-19 13:21:39,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:21:39,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:21:39,259 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:21:39,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:21:39,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:21:29" (1/3) ... [2022-07-19 13:21:39,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303fbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:21:39, skipping insertion in model container [2022-07-19 13:21:39,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:30" (2/3) ... [2022-07-19 13:21:39,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303fbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:21:39, skipping insertion in model container [2022-07-19 13:21:39,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:21:39" (3/3) ... [2022-07-19 13:21:39,268 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_1.i [2022-07-19 13:21:39,281 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:21:39,281 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:21:39,323 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:21:39,329 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@3c1cd9ff, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@17620ec2 [2022-07-19 13:21:39,330 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:21:39,333 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) [2022-07-19 13:21:39,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 13:21:39,339 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:21:39,340 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] [2022-07-19 13:21:39,340 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:21:39,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:21:39,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2022-07-19 13:21:39,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:21:39,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870068148] [2022-07-19 13:21:39,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:21:39,357 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:21:39,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:21:39,360 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) [2022-07-19 13:21:39,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 13:21:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:21:41,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 13:21:41,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:21:41,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 13:21:41,225 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:21:41,226 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:21:41,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870068148] [2022-07-19 13:21:41,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870068148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:21:41,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:21:41,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:21:41,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843985158] [2022-07-19 13:21:41,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:21:41,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:21:41,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:21:41,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:21:41,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:21:41,261 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) [2022-07-19 13:21:41,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:21:41,280 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-07-19 13:21:41,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:21:41,285 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 [2022-07-19 13:21:41,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:21:41,291 INFO L225 Difference]: With dead ends: 43 [2022-07-19 13:21:41,292 INFO L226 Difference]: Without dead ends: 19 [2022-07-19 13:21:41,295 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 [2022-07-19 13:21:41,300 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 [2022-07-19 13:21:41,302 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] [2022-07-19 13:21:41,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-19 13:21:41,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-19 13:21:41,327 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) [2022-07-19 13:21:41,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-07-19 13:21:41,329 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2022-07-19 13:21:41,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:21:41,329 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-07-19 13:21:41,330 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) [2022-07-19 13:21:41,330 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-07-19 13:21:41,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 13:21:41,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:21:41,331 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] [2022-07-19 13:21:41,386 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 13:21:41,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:21:41,536 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:21:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:21:41,537 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2022-07-19 13:21:41,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:21:41,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55710687] [2022-07-19 13:21:41,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:21:41,538 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:21:41,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:21:41,542 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) [2022-07-19 13:21:41,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process