./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_6.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 2e48881fddee372e5aad046f2f519f188ef8a27fb46b046a6e106c678419a225 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 13:34:28,933 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 13:34:28,934 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 13:34:28,971 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 13:34:28,971 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 13:34:28,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 13:34:28,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 13:34:28,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 13:34:28,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 13:34:28,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 13:34:28,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 13:34:28,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 13:34:28,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 13:34:28,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 13:34:28,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 13:34:28,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 13:34:29,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 13:34:29,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 13:34:29,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 13:34:29,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 13:34:29,011 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 13:34:29,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 13:34:29,012 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 13:34:29,013 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 13:34:29,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 13:34:29,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 13:34:29,019 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 13:34:29,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 13:34:29,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 13:34:29,022 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 13:34:29,023 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 13:34:29,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 13:34:29,024 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 13:34:29,025 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 13:34:29,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 13:34:29,026 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 13:34:29,026 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 13:34:29,027 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 13:34:29,027 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 13:34:29,027 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 13:34:29,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 13:34:29,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 13:34:29,031 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 13:34:29,066 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 13:34:29,066 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 13:34:29,067 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 13:34:29,067 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 13:34:29,068 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 13:34:29,068 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 13:34:29,068 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 13:34:29,069 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 13:34:29,069 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 13:34:29,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 13:34:29,070 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 13:34:29,070 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 13:34:29,070 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 13:34:29,070 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 13:34:29,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 13:34:29,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 13:34:29,071 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 13:34:29,071 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 13:34:29,071 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 13:34:29,073 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 13:34:29,073 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 13:34:29,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 13:34:29,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 13:34:29,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 13:34:29,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:34:29,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 13:34:29,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 13:34:29,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 13:34:29,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 13:34:29,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 13:34:29,075 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 13:34:29,075 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 13:34:29,076 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 13:34:29,076 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e48881fddee372e5aad046f2f519f188ef8a27fb46b046a6e106c678419a225 [2022-07-22 13:34:29,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 13:34:29,350 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 13:34:29,353 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 13:34:29,354 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 13:34:29,354 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 13:34:29,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_6.i [2022-07-22 13:34:29,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9633cbe29/8b66386de7d647bca1c3cf4130296116/FLAG160684bf4 [2022-07-22 13:34:29,818 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 13:34:29,818 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_6.i [2022-07-22 13:34:29,827 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9633cbe29/8b66386de7d647bca1c3cf4130296116/FLAG160684bf4 [2022-07-22 13:34:29,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9633cbe29/8b66386de7d647bca1c3cf4130296116 [2022-07-22 13:34:29,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 13:34:29,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 13:34:29,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 13:34:29,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 13:34:29,851 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 13:34:29,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:34:29" (1/1) ... [2022-07-22 13:34:29,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d8c177f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:29, skipping insertion in model container [2022-07-22 13:34:29,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:34:29" (1/1) ... [2022-07-22 13:34:29,860 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 13:34:29,879 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 13:34:30,048 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_6.i[1743,1756] [2022-07-22 13:34:30,051 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:34:30,057 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 13:34:30,071 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_6.i[1743,1756] [2022-07-22 13:34:30,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:34:30,082 INFO L208 MainTranslator]: Completed translation [2022-07-22 13:34:30,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:30 WrapperNode [2022-07-22 13:34:30,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 13:34:30,084 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 13:34:30,084 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 13:34:30,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 13:34:30,090 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:30" (1/1) ... [2022-07-22 13:34:30,096 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:30" (1/1) ... [2022-07-22 13:34:30,111 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2022-07-22 13:34:30,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 13:34:30,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 13:34:30,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 13:34:30,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 13:34:30,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:30" (1/1) ... [2022-07-22 13:34:30,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:30" (1/1) ... [2022-07-22 13:34:30,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:30" (1/1) ... [2022-07-22 13:34:30,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:30" (1/1) ... [2022-07-22 13:34:30,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:30" (1/1) ... [2022-07-22 13:34:30,128 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:30" (1/1) ... [2022-07-22 13:34:30,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:30" (1/1) ... [2022-07-22 13:34:30,137 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 13:34:30,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 13:34:30,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 13:34:30,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 13:34:30,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:30" (1/1) ... [2022-07-22 13:34:30,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:34:30,160 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:34:30,169 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) [2022-07-22 13:34:30,175 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 [2022-07-22 13:34:30,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 13:34:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-22 13:34:30,203 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-22 13:34:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-22 13:34:30,203 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-22 13:34:30,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 13:34:30,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 13:34:30,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 13:34:30,253 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 13:34:30,255 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 13:34:30,390 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 13:34:30,395 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 13:34:30,395 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 13:34:30,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:34:30 BoogieIcfgContainer [2022-07-22 13:34:30,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 13:34:30,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 13:34:30,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 13:34:30,403 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 13:34:30,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 01:34:29" (1/3) ... [2022-07-22 13:34:30,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7ede5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:34:30, skipping insertion in model container [2022-07-22 13:34:30,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:30" (2/3) ... [2022-07-22 13:34:30,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d7ede5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:34:30, skipping insertion in model container [2022-07-22 13:34:30,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:34:30" (3/3) ... [2022-07-22 13:34:30,406 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_6.i [2022-07-22 13:34:30,421 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 13:34:30,422 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 13:34:30,477 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 13:34:30,485 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@24ba03b3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@19fd2795 [2022-07-22 13:34:30,486 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 13:34:30,490 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) [2022-07-22 13:34:30,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-22 13:34:30,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:34:30,500 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] [2022-07-22 13:34:30,500 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:34:30,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:34:30,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2022-07-22 13:34:30,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:34:30,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317951396] [2022-07-22 13:34:30,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:34:30,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:34:30,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:34:30,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-22 13:34:30,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:34:30,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 13:34:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:34:30,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 13:34:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:34:30,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 13:34:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:34:30,704 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 13:34:30,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 13:34:30,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317951396] [2022-07-22 13:34:30,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317951396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:34:30,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:34:30,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 13:34:30,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340738707] [2022-07-22 13:34:30,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:34:30,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 13:34:30,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 13:34:30,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 13:34:30,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 13:34:30,747 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) [2022-07-22 13:34:30,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:34:30,777 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-07-22 13:34:30,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 13:34:30,780 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 [2022-07-22 13:34:30,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:34:30,786 INFO L225 Difference]: With dead ends: 43 [2022-07-22 13:34:30,787 INFO L226 Difference]: Without dead ends: 19 [2022-07-22 13:34:30,790 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 [2022-07-22 13:34:30,795 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 [2022-07-22 13:34:30,796 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] [2022-07-22 13:34:30,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-22 13:34:30,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-22 13:34:30,843 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) [2022-07-22 13:34:30,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-07-22 13:34:30,846 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2022-07-22 13:34:30,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:34:30,846 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-07-22 13:34:30,847 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) [2022-07-22 13:34:30,847 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-07-22 13:34:30,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-22 13:34:30,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:34:30,850 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] [2022-07-22 13:34:30,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 13:34:30,851 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:34:30,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:34:30,852 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2022-07-22 13:34:30,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 13:34:30,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781239889] [2022-07-22 13:34:30,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:34:30,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 13:34:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 13:34:30,890 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-22 13:34:30,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 13:34:30,938 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-22 13:34:30,939 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-22 13:34:30,941 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-22 13:34:30,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 13:34:30,947 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-22 13:34:30,951 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-22 13:34:30,988 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.07 01:34:30 BoogieIcfgContainer [2022-07-22 13:34:30,989 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-22 13:34:30,990 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-22 13:34:30,990 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-22 13:34:30,990 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-22 13:34:30,991 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:34:30" (3/4) ... [2022-07-22 13:34:30,994 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-22 13:34:30,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-22 13:34:30,995 INFO L158 Benchmark]: Toolchain (without parser) took 1147.97ms. Allocated memory was 96.5MB in the beginning and 125.8MB in the end (delta: 29.4MB). Free memory was 57.6MB in the beginning and 94.1MB in the end (delta: -36.5MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:34:30,995 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 96.5MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:34:30,996 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.40ms. Allocated memory is still 96.5MB. Free memory was 57.4MB in the beginning and 68.2MB in the end (delta: -10.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-07-22 13:34:30,998 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.19ms. Allocated memory is still 96.5MB. Free memory was 68.2MB in the beginning and 66.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:34:30,999 INFO L158 Benchmark]: Boogie Preprocessor took 24.92ms. Allocated memory is still 96.5MB. Free memory was 66.8MB in the beginning and 65.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-22 13:34:31,002 INFO L158 Benchmark]: RCFGBuilder took 258.76ms. Allocated memory is still 96.5MB. Free memory was 65.7MB in the beginning and 56.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-22 13:34:31,003 INFO L158 Benchmark]: TraceAbstraction took 590.29ms. Allocated memory was 96.5MB in the beginning and 125.8MB in the end (delta: 29.4MB). Free memory was 56.3MB in the beginning and 94.1MB in the end (delta: -37.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:34:31,005 INFO L158 Benchmark]: Witness Printer took 4.10ms. Allocated memory is still 125.8MB. Free memory is still 94.1MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-22 13:34:31,010 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 96.5MB. Free memory is still 73.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 235.40ms. Allocated memory is still 96.5MB. Free memory was 57.4MB in the beginning and 68.2MB in the end (delta: -10.8MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.19ms. Allocated memory is still 96.5MB. Free memory was 68.2MB in the beginning and 66.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.92ms. Allocated memory is still 96.5MB. Free memory was 66.8MB in the beginning and 65.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 258.76ms. Allocated memory is still 96.5MB. Free memory was 65.7MB in the beginning and 56.6MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 590.29ms. Allocated memory was 96.5MB in the beginning and 125.8MB in the end (delta: 29.4MB). Free memory was 56.3MB in the beginning and 94.1MB in the end (delta: -37.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.10ms. Allocated memory is still 125.8MB. Free memory is still 94.1MB. 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 > -1.2f && IN < 1.2f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -1.2f && IN < 1.2f) [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: 0.5s, 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 [2022-07-22 13:34:31,051 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_6.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 2e48881fddee372e5aad046f2f519f188ef8a27fb46b046a6e106c678419a225 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 13:34:33,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 13:34:33,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 13:34:33,050 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 13:34:33,051 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 13:34:33,052 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 13:34:33,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 13:34:33,059 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 13:34:33,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 13:34:33,067 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 13:34:33,068 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 13:34:33,073 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 13:34:33,074 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 13:34:33,076 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 13:34:33,077 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 13:34:33,080 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 13:34:33,081 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 13:34:33,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 13:34:33,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 13:34:33,088 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 13:34:33,090 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 13:34:33,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 13:34:33,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 13:34:33,094 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 13:34:33,095 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 13:34:33,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 13:34:33,100 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 13:34:33,100 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 13:34:33,101 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 13:34:33,101 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 13:34:33,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 13:34:33,102 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 13:34:33,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 13:34:33,105 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 13:34:33,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 13:34:33,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 13:34:33,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 13:34:33,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 13:34:33,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 13:34:33,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 13:34:33,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 13:34:33,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 13:34:33,110 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-22 13:34:33,147 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 13:34:33,148 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 13:34:33,148 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 13:34:33,148 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 13:34:33,149 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 13:34:33,149 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 13:34:33,150 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 13:34:33,150 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 13:34:33,150 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 13:34:33,151 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 13:34:33,152 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 13:34:33,152 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 13:34:33,152 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 13:34:33,152 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 13:34:33,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 13:34:33,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 13:34:33,163 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-22 13:34:33,163 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-22 13:34:33,163 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-22 13:34:33,163 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 13:34:33,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 13:34:33,164 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 13:34:33,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 13:34:33,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 13:34:33,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 13:34:33,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 13:34:33,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:34:33,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 13:34:33,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 13:34:33,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 13:34:33,166 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-22 13:34:33,166 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-22 13:34:33,166 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 13:34:33,166 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 13:34:33,167 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 13:34:33,167 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-22 13:34:33,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2e48881fddee372e5aad046f2f519f188ef8a27fb46b046a6e106c678419a225 [2022-07-22 13:34:33,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 13:34:33,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 13:34:33,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 13:34:33,508 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 13:34:33,508 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 13:34:33,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_6.i [2022-07-22 13:34:33,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c994ac97/2012059efccd4e0e9b745f44615e901e/FLAG450ae9e14 [2022-07-22 13:34:33,998 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 13:34:33,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_6.i [2022-07-22 13:34:34,004 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c994ac97/2012059efccd4e0e9b745f44615e901e/FLAG450ae9e14 [2022-07-22 13:34:34,016 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c994ac97/2012059efccd4e0e9b745f44615e901e [2022-07-22 13:34:34,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 13:34:34,020 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 13:34:34,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 13:34:34,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 13:34:34,024 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 13:34:34,025 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:34:34" (1/1) ... [2022-07-22 13:34:34,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c8249bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:34, skipping insertion in model container [2022-07-22 13:34:34,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 01:34:34" (1/1) ... [2022-07-22 13:34:34,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 13:34:34,044 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 13:34:34,156 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_6.i[1743,1756] [2022-07-22 13:34:34,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:34:34,167 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 13:34:34,183 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_6.i[1743,1756] [2022-07-22 13:34:34,183 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 13:34:34,195 INFO L208 MainTranslator]: Completed translation [2022-07-22 13:34:34,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:34 WrapperNode [2022-07-22 13:34:34,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 13:34:34,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 13:34:34,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 13:34:34,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 13:34:34,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:34" (1/1) ... [2022-07-22 13:34:34,211 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:34" (1/1) ... [2022-07-22 13:34:34,224 INFO L137 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2022-07-22 13:34:34,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 13:34:34,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 13:34:34,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 13:34:34,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 13:34:34,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:34" (1/1) ... [2022-07-22 13:34:34,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:34" (1/1) ... [2022-07-22 13:34:34,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:34" (1/1) ... [2022-07-22 13:34:34,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:34" (1/1) ... [2022-07-22 13:34:34,258 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:34" (1/1) ... [2022-07-22 13:34:34,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:34" (1/1) ... [2022-07-22 13:34:34,267 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:34" (1/1) ... [2022-07-22 13:34:34,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 13:34:34,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 13:34:34,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 13:34:34,272 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 13:34:34,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:34" (1/1) ... [2022-07-22 13:34:34,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 13:34:34,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 13:34:34,300 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) [2022-07-22 13:34:34,335 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 [2022-07-22 13:34:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 13:34:34,353 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-22 13:34:34,353 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-22 13:34:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-22 13:34:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-22 13:34:34,354 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-22 13:34:34,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 13:34:34,355 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 13:34:34,425 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 13:34:34,427 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 13:34:43,213 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 13:34:43,218 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 13:34:43,218 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 13:34:43,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:34:43 BoogieIcfgContainer [2022-07-22 13:34:43,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 13:34:43,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 13:34:43,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 13:34:43,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 13:34:43,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 01:34:34" (1/3) ... [2022-07-22 13:34:43,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd0fbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:34:43, skipping insertion in model container [2022-07-22 13:34:43,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 01:34:34" (2/3) ... [2022-07-22 13:34:43,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd0fbeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 01:34:43, skipping insertion in model container [2022-07-22 13:34:43,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 01:34:43" (3/3) ... [2022-07-22 13:34:43,227 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_6.i [2022-07-22 13:34:43,240 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 13:34:43,240 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 13:34:43,281 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 13:34:43,287 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@261d319c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2c9ed637 [2022-07-22 13:34:43,287 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 13:34:43,291 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) [2022-07-22 13:34:43,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-22 13:34:43,298 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:34:43,299 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] [2022-07-22 13:34:43,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:34:43,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:34:43,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2022-07-22 13:34:43,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 13:34:43,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [108153172] [2022-07-22 13:34:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:34:43,315 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 13:34:43,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 13:34:43,317 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) [2022-07-22 13:34:43,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-22 13:34:45,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 13:34:45,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-22 13:34:45,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 13:34:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-22 13:34:45,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 13:34:45,300 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-22 13:34:45,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [108153172] [2022-07-22 13:34:45,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [108153172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 13:34:45,302 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 13:34:45,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-22 13:34:45,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699879548] [2022-07-22 13:34:45,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 13:34:45,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-22 13:34:45,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-22 13:34:45,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-22 13:34:45,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-22 13:34:45,344 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) [2022-07-22 13:34:45,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 13:34:45,361 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-07-22 13:34:45,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-22 13:34:45,363 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 [2022-07-22 13:34:45,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 13:34:45,369 INFO L225 Difference]: With dead ends: 43 [2022-07-22 13:34:45,369 INFO L226 Difference]: Without dead ends: 19 [2022-07-22 13:34:45,373 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 [2022-07-22 13:34:45,377 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 [2022-07-22 13:34:45,379 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] [2022-07-22 13:34:45,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-22 13:34:45,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-22 13:34:45,420 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) [2022-07-22 13:34:45,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-07-22 13:34:45,423 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2022-07-22 13:34:45,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 13:34:45,424 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-07-22 13:34:45,424 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) [2022-07-22 13:34:45,425 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-07-22 13:34:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-22 13:34:45,435 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 13:34:45,435 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] [2022-07-22 13:34:45,512 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-22 13:34:45,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-22 13:34:45,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 13:34:45,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 13:34:45,657 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2022-07-22 13:34:45,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-22 13:34:45,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [826547353] [2022-07-22 13:34:45,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 13:34:45,658 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-22 13:34:45,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-22 13:34:45,659 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) [2022-07-22 13:34:45,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-22 13:35:39,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-22 13:35:39,052 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.