./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_3_2.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_3_2.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 c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:22:14,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:22:14,832 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:22:14,865 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:22:14,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:22:14,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:22:14,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:22:14,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:22:14,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:22:14,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:22:14,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:22:14,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:22:14,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:22:14,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:22:14,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:22:14,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:22:14,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:22:14,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:22:14,880 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:22:14,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:22:14,883 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:22:14,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:22:14,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:22:14,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:22:14,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:22:14,890 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:22:14,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:22:14,891 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:22:14,892 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:22:14,892 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:22:14,893 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:22:14,893 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:22:14,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:22:14,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:22:14,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:22:14,896 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:22:14,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:22:14,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:22:14,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:22:14,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:22:14,899 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:22:14,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:22:14,900 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:22:14,919 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:22:14,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:22:14,920 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:22:14,920 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:22:14,921 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:22:14,921 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:22:14,922 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:22:14,922 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:22:14,922 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:22:14,922 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:22:14,922 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:22:14,922 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:22:14,923 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:22:14,923 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:22:14,923 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:22:14,923 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:22:14,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:22:14,923 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:22:14,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:22:14,924 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:22:14,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:22:14,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:22:14,924 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:22:14,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:22:14,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:22:14,925 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:22:14,925 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:22:14,925 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:22:14,925 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:22:14,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:22:14,926 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:22:14,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:22:14,926 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:22:14,926 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 [2022-07-19 13:22:15,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:22:15,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:22:15,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:22:15,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:22:15,203 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:22:15,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2022-07-19 13:22:15,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b4ec85ab/f852e92385d7446494ef8e537dca4170/FLAG923f5723b [2022-07-19 13:22:15,734 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:22:15,736 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2022-07-19 13:22:15,742 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b4ec85ab/f852e92385d7446494ef8e537dca4170/FLAG923f5723b [2022-07-19 13:22:16,131 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b4ec85ab/f852e92385d7446494ef8e537dca4170 [2022-07-19 13:22:16,134 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:22:16,137 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:22:16,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:22:16,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:22:16,141 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:22:16,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:22:16" (1/1) ... [2022-07-19 13:22:16,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ac9a0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:16, skipping insertion in model container [2022-07-19 13:22:16,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:22:16" (1/1) ... [2022-07-19 13:22:16,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:22:16,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:22:16,324 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_3_2.i[1764,1777] [2022-07-19 13:22:16,327 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:22:16,333 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:22:16,348 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_3_2.i[1764,1777] [2022-07-19 13:22:16,349 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:22:16,360 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:22:16,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:16 WrapperNode [2022-07-19 13:22:16,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:22:16,362 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:22:16,362 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:22:16,362 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:22:16,368 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:16" (1/1) ... [2022-07-19 13:22:16,375 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:16" (1/1) ... [2022-07-19 13:22:16,389 INFO L137 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-07-19 13:22:16,389 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:22:16,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:22:16,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:22:16,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:22:16,396 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:16" (1/1) ... [2022-07-19 13:22:16,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:16" (1/1) ... [2022-07-19 13:22:16,398 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:16" (1/1) ... [2022-07-19 13:22:16,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:16" (1/1) ... [2022-07-19 13:22:16,402 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:16" (1/1) ... [2022-07-19 13:22:16,404 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:16" (1/1) ... [2022-07-19 13:22:16,405 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:16" (1/1) ... [2022-07-19 13:22:16,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:22:16,407 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:22:16,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:22:16,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:22:16,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:16" (1/1) ... [2022-07-19 13:22:16,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:22:16,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:22:16,444 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 13:22:16,446 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 13:22:16,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:22:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-19 13:22:16,472 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-19 13:22:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-19 13:22:16,472 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-19 13:22:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:22:16,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:22:16,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:22:16,522 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:22:16,523 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:22:16,591 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:22:16,597 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:22:16,598 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:22:16,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:22:16 BoogieIcfgContainer [2022-07-19 13:22:16,600 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:22:16,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:22:16,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:22:16,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:22:16,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:22:16" (1/3) ... [2022-07-19 13:22:16,605 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47189493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:22:16, skipping insertion in model container [2022-07-19 13:22:16,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:16" (2/3) ... [2022-07-19 13:22:16,606 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47189493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:22:16, skipping insertion in model container [2022-07-19 13:22:16,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:22:16" (3/3) ... [2022-07-19 13:22:16,607 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_2.i [2022-07-19 13:22:16,620 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:22:16,620 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:22:16,660 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:22:16,667 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@7544aac5, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@25b2efc9 [2022-07-19 13:22:16,667 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:22:16,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 13:22:16,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-19 13:22:16,678 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:22:16,679 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:22:16,679 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:22:16,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:22:16,684 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2022-07-19 13:22:16,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:22:16,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334759770] [2022-07-19 13:22:16,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:22:16,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:22:16,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:22:16,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 13:22:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:22:16,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 13:22:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:22:16,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 13:22:16,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:22:16,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 13:22:16,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:22:16,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 13:22:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:22:16,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 13:22:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:22:16,903 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 13:22:16,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:22:16,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334759770] [2022-07-19 13:22:16,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334759770] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:22:16,905 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:22:16,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:22:16,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136238429] [2022-07-19 13:22:16,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:22:16,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:22:16,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:22:16,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:22:16,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:22:16,937 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-19 13:22:16,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:22:16,954 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-07-19 13:22:16,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:22:16,956 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2022-07-19 13:22:16,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:22:16,962 INFO L225 Difference]: With dead ends: 49 [2022-07-19 13:22:16,963 INFO L226 Difference]: Without dead ends: 22 [2022-07-19 13:22:16,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 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 13:22:16,969 INFO L413 NwaCegarLoop]: 29 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, 29 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 13:22:16,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:22:16,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-19 13:22:16,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-19 13:22:16,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 13:22:17,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-19 13:22:17,001 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2022-07-19 13:22:17,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:22:17,002 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-19 13:22:17,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-19 13:22:17,002 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-19 13:22:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-19 13:22:17,004 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:22:17,004 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:22:17,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:22:17,005 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:22:17,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:22:17,006 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2022-07-19 13:22:17,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:22:17,006 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082094070] [2022-07-19 13:22:17,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:22:17,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:22:17,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:22:17,026 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:22:17,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:22:17,062 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:22:17,062 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:22:17,065 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:22:17,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 13:22:17,070 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 13:22:17,074 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:22:17,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:22:17 BoogieIcfgContainer [2022-07-19 13:22:17,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:22:17,104 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:22:17,104 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:22:17,104 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:22:17,105 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:22:16" (3/4) ... [2022-07-19 13:22:17,107 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:22:17,108 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:22:17,109 INFO L158 Benchmark]: Toolchain (without parser) took 971.71ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 64.0MB in the beginning and 78.4MB in the end (delta: -14.5MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-07-19 13:22:17,110 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 94.4MB. Free memory was 50.0MB in the beginning and 50.0MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:22:17,113 INFO L158 Benchmark]: CACSL2BoogieTranslator took 222.90ms. Allocated memory is still 94.4MB. Free memory was 63.8MB in the beginning and 70.2MB in the end (delta: -6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:22:17,117 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.77ms. Allocated memory is still 94.4MB. Free memory was 70.2MB in the beginning and 68.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:22:17,119 INFO L158 Benchmark]: Boogie Preprocessor took 16.23ms. Allocated memory is still 94.4MB. Free memory was 68.6MB in the beginning and 67.7MB in the end (delta: 870.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:22:17,120 INFO L158 Benchmark]: RCFGBuilder took 192.73ms. Allocated memory is still 94.4MB. Free memory was 67.7MB in the beginning and 58.6MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 13:22:17,120 INFO L158 Benchmark]: TraceAbstraction took 501.82ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 58.0MB in the beginning and 79.0MB in the end (delta: -20.9MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. [2022-07-19 13:22:17,121 INFO L158 Benchmark]: Witness Printer took 4.14ms. Allocated memory is still 117.4MB. Free memory is still 78.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:22:17,126 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 94.4MB. Free memory was 50.0MB in the beginning and 50.0MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 222.90ms. Allocated memory is still 94.4MB. Free memory was 63.8MB in the beginning and 70.2MB in the end (delta: -6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.77ms. Allocated memory is still 94.4MB. Free memory was 70.2MB in the beginning and 68.6MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 16.23ms. Allocated memory is still 94.4MB. Free memory was 68.6MB in the beginning and 67.7MB in the end (delta: 870.3kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 192.73ms. Allocated memory is still 94.4MB. Free memory was 67.7MB in the beginning and 58.6MB in the end (delta: 9.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 501.82ms. Allocated memory was 94.4MB in the beginning and 117.4MB in the end (delta: 23.1MB). Free memory was 58.0MB in the beginning and 79.0MB in the end (delta: -20.9MB). Peak memory consumption was 4.4MB. Max. memory is 16.1GB. * Witness Printer took 4.14ms. Allocated memory is still 117.4MB. Free memory is still 78.4MB. 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 46. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L42] CALL, EXPR f(IN) VAL [\old(x)=50] [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)=50, x=50] [L42] RET, EXPR f(IN) VAL [f(IN)=51, IN=50] [L42] CALL, EXPR fp(IN) VAL [\old(x)=50] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=50, x=50] [L42] RET, EXPR fp(IN) VAL [f(IN)=51, fp(IN)=55, IN=50] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=52] [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)=52, x=52] [L44] RET, EXPR f(x) VAL [f(x)=53, IN=50, x=52] [L44] CALL, EXPR fp(x) VAL [\old(x)=52] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=52, x=52] [L44] RET, EXPR fp(x) VAL [f(x)=53, fp(x)=56, IN=50, x=52] [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) VAL [\old(x)=54] [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)=54, x=54] [L46] RET, EXPR f(x) VAL [f(x)=57, IN=50, x=54] [L46] CALL, EXPR fp(x) VAL [\old(x)=54] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=54, x=54] [L46] RET, EXPR fp(x) VAL [f(x)=57, fp(x)=49, IN=50, x=54] [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=50] [L51] reach_error() VAL [IN=50] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 3, 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, 29 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, 29 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 18/18 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 13:22:17,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_2.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 c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:22:19,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:22:19,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:22:19,142 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:22:19,143 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:22:19,144 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:22:19,149 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:22:19,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:22:19,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:22:19,160 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:22:19,161 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:22:19,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:22:19,167 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:22:19,169 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:22:19,170 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:22:19,174 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:22:19,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:22:19,176 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:22:19,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:22:19,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:22:19,184 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:22:19,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:22:19,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:22:19,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:22:19,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:22:19,201 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:22:19,202 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:22:19,202 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:22:19,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:22:19,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:22:19,205 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:22:19,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:22:19,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:22:19,207 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:22:19,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:22:19,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:22:19,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:22:19,210 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:22:19,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:22:19,211 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:22:19,211 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:22:19,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:22:19,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:22:19,251 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:22:19,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:22:19,252 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:22:19,252 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:22:19,253 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:22:19,253 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:22:19,254 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:22:19,254 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:22:19,254 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:22:19,255 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:22:19,255 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:22:19,256 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:22:19,256 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:22:19,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:22:19,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:22:19,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:22:19,257 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:22:19,257 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:22:19,257 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:22:19,257 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:22:19,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:22:19,258 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:22:19,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:22:19,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:22:19,258 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:22:19,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:22:19,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:22:19,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:22:19,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:22:19,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:22:19,260 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:22:19,260 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:22:19,260 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:22:19,260 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:22:19,261 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:22:19,261 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:22:19,261 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 [2022-07-19 13:22:19,589 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:22:19,614 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:22:19,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:22:19,618 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:22:19,618 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:22:19,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2022-07-19 13:22:19,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/273e25bd9/89ef5547736d492fa1ed3db2800b40b7/FLAGd0aec236b [2022-07-19 13:22:20,114 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:22:20,116 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2022-07-19 13:22:20,122 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/273e25bd9/89ef5547736d492fa1ed3db2800b40b7/FLAGd0aec236b [2022-07-19 13:22:20,510 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/273e25bd9/89ef5547736d492fa1ed3db2800b40b7 [2022-07-19 13:22:20,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:22:20,515 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:22:20,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:22:20,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:22:20,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:22:20,520 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:22:20" (1/1) ... [2022-07-19 13:22:20,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c97b0c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:20, skipping insertion in model container [2022-07-19 13:22:20,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:22:20" (1/1) ... [2022-07-19 13:22:20,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:22:20,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:22:20,726 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_3_2.i[1764,1777] [2022-07-19 13:22:20,730 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:22:20,740 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:22:20,767 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_3_2.i[1764,1777] [2022-07-19 13:22:20,768 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:22:20,795 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:22:20,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:20 WrapperNode [2022-07-19 13:22:20,795 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:22:20,796 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:22:20,796 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:22:20,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:22:20,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:20" (1/1) ... [2022-07-19 13:22:20,809 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:20" (1/1) ... [2022-07-19 13:22:20,823 INFO L137 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-07-19 13:22:20,824 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:22:20,825 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:22:20,825 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:22:20,825 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:22:20,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:20" (1/1) ... [2022-07-19 13:22:20,832 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:20" (1/1) ... [2022-07-19 13:22:20,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:20" (1/1) ... [2022-07-19 13:22:20,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:20" (1/1) ... [2022-07-19 13:22:20,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:20" (1/1) ... [2022-07-19 13:22:20,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:20" (1/1) ... [2022-07-19 13:22:20,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:20" (1/1) ... [2022-07-19 13:22:20,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:22:20,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:22:20,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:22:20,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:22:20,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:20" (1/1) ... [2022-07-19 13:22:20,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:22:20,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:22:20,885 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 13:22:20,900 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 13:22:20,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:22:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-19 13:22:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-19 13:22:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:22:20,920 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-19 13:22:20,920 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-19 13:22:20,921 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:22:20,921 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:22:20,975 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:22:20,977 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:22:31,846 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:22:31,851 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:22:31,851 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:22:31,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:22:31 BoogieIcfgContainer [2022-07-19 13:22:31,853 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:22:31,854 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:22:31,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:22:31,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:22:31,857 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:22:20" (1/3) ... [2022-07-19 13:22:31,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112d24d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:22:31, skipping insertion in model container [2022-07-19 13:22:31,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:22:20" (2/3) ... [2022-07-19 13:22:31,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@112d24d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:22:31, skipping insertion in model container [2022-07-19 13:22:31,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:22:31" (3/3) ... [2022-07-19 13:22:31,860 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_2.i [2022-07-19 13:22:31,873 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:22:31,873 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:22:31,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:22:31,924 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@4b9f6f9e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@9b0d9f7 [2022-07-19 13:22:31,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:22:31,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 13:22:31,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-19 13:22:31,934 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:22:31,934 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:22:31,935 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:22:31,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:22:31,939 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2022-07-19 13:22:31,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:22:31,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922772560] [2022-07-19 13:22:31,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:22:31,950 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:22:31,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:22:31,955 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 13:22:31,960 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 13:22:34,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:22:34,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 13:22:34,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:22:34,676 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-19 13:22:34,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:22:34,677 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:22:34,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922772560] [2022-07-19 13:22:34,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922772560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:22:34,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:22:34,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:22:34,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066882790] [2022-07-19 13:22:34,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:22:34,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:22:34,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:22:34,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:22:34,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:22:34,715 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-19 13:22:34,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:22:34,733 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-07-19 13:22:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:22:34,735 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2022-07-19 13:22:34,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:22:34,741 INFO L225 Difference]: With dead ends: 49 [2022-07-19 13:22:34,741 INFO L226 Difference]: Without dead ends: 22 [2022-07-19 13:22:34,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 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 13:22:34,748 INFO L413 NwaCegarLoop]: 29 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, 29 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 13:22:34,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:22:34,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-19 13:22:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-19 13:22:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-19 13:22:34,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-19 13:22:34,785 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2022-07-19 13:22:34,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:22:34,786 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-19 13:22:34,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-19 13:22:34,786 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-19 13:22:34,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-19 13:22:34,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:22:34,788 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:22:34,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-19 13:22:34,991 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 13:22:34,992 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:22:34,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:22:34,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2022-07-19 13:22:34,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:22:34,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325141089] [2022-07-19 13:22:34,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:22:34,994 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:22:34,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:22:34,996 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 13:22:34,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process