./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_1_6.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 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_1_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 ec222c3996017a4c3d0b54e86b7104edba9dccbc593820967cf8b3cad697d0fa --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:19:58,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:19:58,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:19:58,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:19:58,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:19:58,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:19:58,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:19:58,279 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:19:58,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:19:58,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:19:58,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:19:58,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:19:58,284 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:19:58,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:19:58,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:19:58,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:19:58,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:19:58,294 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:19:58,296 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:19:58,297 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:19:58,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:19:58,302 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:19:58,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:19:58,303 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:19:58,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:19:58,305 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:19:58,305 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:19:58,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:19:58,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:19:58,306 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:19:58,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:19:58,307 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:19:58,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:19:58,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:19:58,308 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:19:58,308 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:19:58,309 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:19:58,309 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:19:58,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:19:58,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:19:58,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:19:58,311 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 10:19:58,324 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:19:58,325 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:19:58,325 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:19:58,325 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:19:58,326 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:19:58,326 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:19:58,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:19:58,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:19:58,327 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:19:58,327 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:19:58,327 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:19:58,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 10:19:58,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:19:58,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:19:58,328 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:19:58,328 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:19:58,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:19:58,328 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:19:58,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:19:58,328 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:19:58,329 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:19:58,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:19:58,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:19:58,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:19:58,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:19:58,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:19:58,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:19:58,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:19:58,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 10:19:58,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 10:19:58,330 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:19:58,331 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:19:58,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:19:58,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:19:58,331 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec222c3996017a4c3d0b54e86b7104edba9dccbc593820967cf8b3cad697d0fa [2021-12-15 10:19:58,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:19:58,528 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:19:58,530 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:19:58,530 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:19:58,531 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:19:58,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-12-15 10:19:58,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f68be4bc/64f6fa94096845649a12f215a9c49871/FLAG525e02aae [2021-12-15 10:19:58,893 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:19:58,894 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-12-15 10:19:58,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f68be4bc/64f6fa94096845649a12f215a9c49871/FLAG525e02aae [2021-12-15 10:19:59,314 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f68be4bc/64f6fa94096845649a12f215a9c49871 [2021-12-15 10:19:59,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:19:59,317 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:19:59,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:19:59,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:19:59,325 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:19:59,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:19:59" (1/1) ... [2021-12-15 10:19:59,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@68ff3538 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:59, skipping insertion in model container [2021-12-15 10:19:59,327 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:19:59" (1/1) ... [2021-12-15 10:19:59,332 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:19:59,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:19:59,500 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_1_6.i[1722,1735] [2021-12-15 10:19:59,503 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:19:59,509 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:19:59,534 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_1_6.i[1722,1735] [2021-12-15 10:19:59,538 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:19:59,550 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:19:59,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:59 WrapperNode [2021-12-15 10:19:59,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:19:59,552 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:19:59,552 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:19:59,552 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:19:59,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:59" (1/1) ... [2021-12-15 10:19:59,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:59" (1/1) ... [2021-12-15 10:19:59,577 INFO L137 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 30 [2021-12-15 10:19:59,578 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:19:59,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:19:59,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:19:59,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:19:59,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:59" (1/1) ... [2021-12-15 10:19:59,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:59" (1/1) ... [2021-12-15 10:19:59,591 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:59" (1/1) ... [2021-12-15 10:19:59,592 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:59" (1/1) ... [2021-12-15 10:19:59,599 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:59" (1/1) ... [2021-12-15 10:19:59,604 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:59" (1/1) ... [2021-12-15 10:19:59,604 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:59" (1/1) ... [2021-12-15 10:19:59,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:19:59,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:19:59,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:19:59,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:19:59,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:59" (1/1) ... [2021-12-15 10:19:59,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:19:59,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:19:59,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 10:19:59,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-15 10:19:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:19:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 10:19:59,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:19:59,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:19:59,698 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:19:59,699 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:19:59,751 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:19:59,755 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:19:59,755 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 10:19:59,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:19:59 BoogieIcfgContainer [2021-12-15 10:19:59,756 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:19:59,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:19:59,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:19:59,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:19:59,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:19:59" (1/3) ... [2021-12-15 10:19:59,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b34f176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:19:59, skipping insertion in model container [2021-12-15 10:19:59,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:19:59" (2/3) ... [2021-12-15 10:19:59,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b34f176 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:19:59, skipping insertion in model container [2021-12-15 10:19:59,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:19:59" (3/3) ... [2021-12-15 10:19:59,762 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2021-12-15 10:19:59,766 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:19:59,766 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:19:59,831 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:19:59,836 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 10:19:59,837 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:19:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:19:59,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 10:19:59,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:19:59,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:19:59,864 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:19:59,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:19:59,868 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-12-15 10:19:59,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:19:59,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123094797] [2021-12-15 10:19:59,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:19:59,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:19:59,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:19:59,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 10:19:59,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 10:19:59,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123094797] [2021-12-15 10:19:59,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123094797] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:19:59,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:19:59,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 10:19:59,968 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336201199] [2021-12-15 10:19:59,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:19:59,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 10:19:59,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 10:19:59,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 10:19:59,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 10:19:59,995 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:20:00,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:20:00,004 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-12-15 10:20:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 10:20:00,007 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 10:20:00,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:20:00,013 INFO L225 Difference]: With dead ends: 23 [2021-12-15 10:20:00,013 INFO L226 Difference]: Without dead ends: 9 [2021-12-15 10:20:00,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 10:20:00,022 INFO L933 BasicCegarLoop]: 12 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, 12 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 10:20:00,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 10:20:00,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-15 10:20:00,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-15 10:20:00,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:20:00,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-12-15 10:20:00,046 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-12-15 10:20:00,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:20:00,046 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-12-15 10:20:00,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:20:00,047 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-12-15 10:20:00,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 10:20:00,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:20:00,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:20:00,048 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 10:20:00,049 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:20:00,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:20:00,052 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-12-15 10:20:00,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 10:20:00,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912255639] [2021-12-15 10:20:00,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:20:00,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 10:20:00,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 10:20:00,080 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 10:20:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 10:20:00,098 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 10:20:00,099 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 10:20:00,100 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 10:20:00,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 10:20:00,104 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 10:20:00,106 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 10:20:00,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 10:20:00 BoogieIcfgContainer [2021-12-15 10:20:00,122 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 10:20:00,123 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 10:20:00,123 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 10:20:00,123 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 10:20:00,124 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:19:59" (3/4) ... [2021-12-15 10:20:00,126 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 10:20:00,126 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 10:20:00,126 INFO L158 Benchmark]: Toolchain (without parser) took 809.26ms. Allocated memory is still 111.1MB. Free memory was 75.0MB in the beginning and 52.8MB in the end (delta: 22.2MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2021-12-15 10:20:00,127 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 111.1MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:20:00,127 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.87ms. Allocated memory is still 111.1MB. Free memory was 74.8MB in the beginning and 86.8MB in the end (delta: -12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:20:00,127 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.68ms. Allocated memory is still 111.1MB. Free memory was 86.8MB in the beginning and 85.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:20:00,128 INFO L158 Benchmark]: Boogie Preprocessor took 27.14ms. Allocated memory is still 111.1MB. Free memory was 85.3MB in the beginning and 84.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:20:00,128 INFO L158 Benchmark]: RCFGBuilder took 150.68ms. Allocated memory is still 111.1MB. Free memory was 84.3MB in the beginning and 75.6MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:20:00,128 INFO L158 Benchmark]: TraceAbstraction took 364.96ms. Allocated memory is still 111.1MB. Free memory was 75.2MB in the beginning and 53.1MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2021-12-15 10:20:00,129 INFO L158 Benchmark]: Witness Printer took 2.88ms. Allocated memory is still 111.1MB. Free memory was 53.1MB in the beginning and 52.8MB in the end (delta: 323.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:20:00,131 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 111.1MB. Free memory is still 90.9MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.87ms. Allocated memory is still 111.1MB. Free memory was 74.8MB in the beginning and 86.8MB in the end (delta: -12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.68ms. Allocated memory is still 111.1MB. Free memory was 86.8MB in the beginning and 85.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.14ms. Allocated memory is still 111.1MB. Free memory was 85.3MB in the beginning and 84.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 150.68ms. Allocated memory is still 111.1MB. Free memory was 84.3MB in the beginning and 75.6MB in the end (delta: 8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 364.96ms. Allocated memory is still 111.1MB. Free memory was 75.2MB in the beginning and 53.1MB in the end (delta: 22.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Witness Printer took 2.88ms. Allocated memory is still 111.1MB. Free memory was 53.1MB in the beginning and 52.8MB in the end (delta: 323.5kB). Peak memory consumption was 2.1MB. 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 42. 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) [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) [L42] CALL, EXPR fp(IN) [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) [L42] float x = IN - f(IN)/fp(IN); [L50] COND TRUE !(x < 0.1) VAL [IN=49] [L51] reach_error() VAL [IN=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 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, 12 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-15 10:20:00,159 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_1_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 ec222c3996017a4c3d0b54e86b7104edba9dccbc593820967cf8b3cad697d0fa --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 10:20:01,773 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 10:20:01,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 10:20:01,807 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 10:20:01,808 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 10:20:01,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 10:20:01,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 10:20:01,815 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 10:20:01,817 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 10:20:01,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 10:20:01,821 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 10:20:01,822 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 10:20:01,823 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 10:20:01,824 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 10:20:01,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 10:20:01,830 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 10:20:01,831 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 10:20:01,831 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 10:20:01,833 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 10:20:01,837 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 10:20:01,839 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 10:20:01,839 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 10:20:01,840 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 10:20:01,841 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 10:20:01,846 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 10:20:01,846 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 10:20:01,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 10:20:01,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 10:20:01,848 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 10:20:01,849 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 10:20:01,849 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 10:20:01,850 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 10:20:01,851 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 10:20:01,851 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 10:20:01,852 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 10:20:01,852 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 10:20:01,853 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 10:20:01,853 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 10:20:01,853 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 10:20:01,854 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 10:20:01,855 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 10:20:01,856 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 10:20:01,884 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 10:20:01,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 10:20:01,885 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 10:20:01,885 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 10:20:01,886 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 10:20:01,886 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 10:20:01,887 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 10:20:01,887 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 10:20:01,887 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 10:20:01,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 10:20:01,888 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 10:20:01,888 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 10:20:01,888 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 10:20:01,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 10:20:01,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 10:20:01,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 10:20:01,889 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 10:20:01,889 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 10:20:01,889 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 10:20:01,889 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 10:20:01,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 10:20:01,890 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 10:20:01,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 10:20:01,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 10:20:01,896 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 10:20:01,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 10:20:01,897 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:20:01,897 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 10:20:01,897 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 10:20:01,897 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 10:20:01,898 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 10:20:01,898 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 10:20:01,898 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 10:20:01,898 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 10:20:01,898 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 10:20:01,898 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 10:20:01,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 10:20:01,899 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ec222c3996017a4c3d0b54e86b7104edba9dccbc593820967cf8b3cad697d0fa [2021-12-15 10:20:02,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 10:20:02,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 10:20:02,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 10:20:02,187 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 10:20:02,187 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 10:20:02,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-12-15 10:20:02,232 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bd147764/565ef20ed3574c72814a18e2614becbd/FLAGa1f6695d1 [2021-12-15 10:20:02,534 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 10:20:02,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_6.i [2021-12-15 10:20:02,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bd147764/565ef20ed3574c72814a18e2614becbd/FLAGa1f6695d1 [2021-12-15 10:20:02,974 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4bd147764/565ef20ed3574c72814a18e2614becbd [2021-12-15 10:20:02,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 10:20:02,976 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 10:20:02,977 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 10:20:02,977 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 10:20:02,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 10:20:02,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:20:02" (1/1) ... [2021-12-15 10:20:02,981 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2575ce5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:02, skipping insertion in model container [2021-12-15 10:20:02,981 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 10:20:02" (1/1) ... [2021-12-15 10:20:02,995 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 10:20:03,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 10:20:03,136 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_1_6.i[1722,1735] [2021-12-15 10:20:03,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:20:03,154 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 10:20:03,210 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_1_6.i[1722,1735] [2021-12-15 10:20:03,211 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 10:20:03,224 INFO L208 MainTranslator]: Completed translation [2021-12-15 10:20:03,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:03 WrapperNode [2021-12-15 10:20:03,225 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 10:20:03,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 10:20:03,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 10:20:03,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 10:20:03,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:03" (1/1) ... [2021-12-15 10:20:03,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:03" (1/1) ... [2021-12-15 10:20:03,260 INFO L137 Inliner]: procedures = 18, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 31 [2021-12-15 10:20:03,261 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 10:20:03,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 10:20:03,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 10:20:03,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 10:20:03,268 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:03" (1/1) ... [2021-12-15 10:20:03,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:03" (1/1) ... [2021-12-15 10:20:03,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:03" (1/1) ... [2021-12-15 10:20:03,273 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:03" (1/1) ... [2021-12-15 10:20:03,286 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:03" (1/1) ... [2021-12-15 10:20:03,290 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:03" (1/1) ... [2021-12-15 10:20:03,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:03" (1/1) ... [2021-12-15 10:20:03,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 10:20:03,294 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 10:20:03,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 10:20:03,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 10:20:03,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:03" (1/1) ... [2021-12-15 10:20:03,301 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 10:20:03,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 10:20:03,316 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-15 10:20:03,335 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 [2021-12-15 10:20:03,345 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 10:20:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 10:20:03,346 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 10:20:03,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 10:20:03,397 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 10:20:03,398 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 10:20:08,259 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 10:20:08,263 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 10:20:08,263 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 10:20:08,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:20:08 BoogieIcfgContainer [2021-12-15 10:20:08,264 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 10:20:08,265 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 10:20:08,265 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 10:20:08,267 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 10:20:08,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 10:20:02" (1/3) ... [2021-12-15 10:20:08,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1283efe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:20:08, skipping insertion in model container [2021-12-15 10:20:08,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 10:20:03" (2/3) ... [2021-12-15 10:20:08,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1283efe8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 10:20:08, skipping insertion in model container [2021-12-15 10:20:08,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:20:08" (3/3) ... [2021-12-15 10:20:08,269 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_6.i [2021-12-15 10:20:08,272 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 10:20:08,272 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 10:20:08,325 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 10:20:08,330 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 10:20:08,330 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 10:20:08,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:20:08,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 10:20:08,342 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:20:08,342 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:20:08,343 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:20:08,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:20:08,346 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-12-15 10:20:08,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:20:08,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727924389] [2021-12-15 10:20:08,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:20:08,356 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:20:08,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:20:08,358 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 10:20:08,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 10:20:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 10:20:09,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 10:20:09,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 10:20:09,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 10:20:09,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 10:20:09,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 10:20:09,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727924389] [2021-12-15 10:20:09,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727924389] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 10:20:09,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 10:20:09,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 10:20:09,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656808430] [2021-12-15 10:20:09,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 10:20:09,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 10:20:09,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 10:20:09,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 10:20:09,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 10:20:09,462 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:20:09,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 10:20:09,471 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-12-15 10:20:09,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 10:20:09,473 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-15 10:20:09,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 10:20:09,478 INFO L225 Difference]: With dead ends: 23 [2021-12-15 10:20:09,481 INFO L226 Difference]: Without dead ends: 9 [2021-12-15 10:20:09,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 10:20:09,487 INFO L933 BasicCegarLoop]: 12 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, 12 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 10:20:09,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 10:20:09,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-15 10:20:09,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-15 10:20:09,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:20:09,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-12-15 10:20:09,512 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-12-15 10:20:09,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 10:20:09,513 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-12-15 10:20:09,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-15 10:20:09,513 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-12-15 10:20:09,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 10:20:09,513 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 10:20:09,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 10:20:09,543 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-15 10:20:09,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 10:20:09,715 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 10:20:09,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 10:20:09,715 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-12-15 10:20:09,716 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 10:20:09,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000074519] [2021-12-15 10:20:09,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 10:20:09,716 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 10:20:09,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 10:20:09,717 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-15 10:20:09,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-15 10:20:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 10:20:17,124 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 10:20:23,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 10:20:23,577 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-15 10:20:23,577 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 10:20:23,578 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 10:20:23,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-15 10:20:23,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 10:20:23,782 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 10:20:23,785 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 10:20:23,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 10:20:23 BoogieIcfgContainer [2021-12-15 10:20:23,821 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 10:20:23,822 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 10:20:23,822 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 10:20:23,822 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 10:20:23,822 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 10:20:08" (3/4) ... [2021-12-15 10:20:23,824 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-15 10:20:23,844 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-15 10:20:23,845 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 10:20:23,845 INFO L158 Benchmark]: Toolchain (without parser) took 20868.74ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 37.7MB in the beginning and 51.4MB in the end (delta: -13.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:20:23,846 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 58.7MB. Free memory was 40.4MB in the beginning and 40.4MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:20:23,846 INFO L158 Benchmark]: CACSL2BoogieTranslator took 247.95ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 41.6MB in the end (delta: -4.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-15 10:20:23,846 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.95ms. Allocated memory is still 58.7MB. Free memory was 41.6MB in the beginning and 40.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 10:20:23,846 INFO L158 Benchmark]: Boogie Preprocessor took 31.43ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 38.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:20:23,847 INFO L158 Benchmark]: RCFGBuilder took 4969.87ms. Allocated memory is still 58.7MB. Free memory was 38.7MB in the beginning and 30.1MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 10:20:23,847 INFO L158 Benchmark]: TraceAbstraction took 15556.18ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 29.8MB in the beginning and 53.5MB in the end (delta: -23.7MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-12-15 10:20:23,847 INFO L158 Benchmark]: Witness Printer took 22.87ms. Allocated memory is still 71.3MB. Free memory was 53.5MB in the beginning and 51.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 10:20:23,849 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 58.7MB. Free memory was 40.4MB in the beginning and 40.4MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 247.95ms. Allocated memory is still 58.7MB. Free memory was 37.4MB in the beginning and 41.6MB in the end (delta: -4.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 34.95ms. Allocated memory is still 58.7MB. Free memory was 41.6MB in the beginning and 40.0MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 31.43ms. Allocated memory is still 58.7MB. Free memory was 40.0MB in the beginning and 38.9MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 4969.87ms. Allocated memory is still 58.7MB. Free memory was 38.7MB in the beginning and 30.1MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 15556.18ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 29.8MB in the beginning and 53.5MB in the end (delta: -23.7MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Witness Printer took 22.87ms. Allocated memory is still 71.3MB. Free memory was 53.5MB in the beginning and 51.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. 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 - CounterExampleResult [Line: 51]: a call to reach_error is reachable a call to reach_error is reachable We found a 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) [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)=-1.1985985040664673, \result=-0.9329268336296082, x=-1.1985985040664673] [L42] RET, EXPR f(IN) [L42] CALL, EXPR fp(IN) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-1.1985985040664673, \result=0.3717961311340332, x=-1.1985985040664673] [L42] RET, EXPR fp(IN) [L42] float x = IN - f(IN)/fp(IN); [L50] COND TRUE !(x < 0.1) VAL [IN=-1.1985985040664673, x=1.310644507408142] [L51] reach_error() VAL [IN=-1.1985985040664673, x=1.310644507408142] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 15.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 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, 12 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 8.3s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 26 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 proved your program to be incorrect! [2021-12-15 10:20:23,974 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 Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE