./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_7.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_2_7.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 1ed3942f8a28a8a24515254c1482e383d8fc6f528b158a90f262f1167d5b8c4f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 05:50:48,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 05:50:48,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 05:50:48,378 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 05:50:48,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 05:50:48,379 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 05:50:48,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 05:50:48,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 05:50:48,382 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 05:50:48,383 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 05:50:48,383 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 05:50:48,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 05:50:48,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 05:50:48,385 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 05:50:48,386 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 05:50:48,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 05:50:48,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 05:50:48,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 05:50:48,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 05:50:48,390 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 05:50:48,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 05:50:48,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 05:50:48,392 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 05:50:48,393 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 05:50:48,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 05:50:48,395 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 05:50:48,395 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 05:50:48,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 05:50:48,396 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 05:50:48,396 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 05:50:48,397 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 05:50:48,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 05:50:48,398 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 05:50:48,398 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 05:50:48,399 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 05:50:48,399 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 05:50:48,399 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 05:50:48,400 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 05:50:48,400 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 05:50:48,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 05:50:48,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 05:50:48,402 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 05:50:48,419 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 05:50:48,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 05:50:48,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 05:50:48,420 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 05:50:48,420 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 05:50:48,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 05:50:48,421 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 05:50:48,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 05:50:48,421 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 05:50:48,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 05:50:48,421 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 05:50:48,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 05:50:48,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 05:50:48,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 05:50:48,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 05:50:48,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 05:50:48,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 05:50:48,422 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 05:50:48,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 05:50:48,423 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 05:50:48,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 05:50:48,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 05:50:48,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 05:50:48,423 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 05:50:48,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 05:50:48,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 05:50:48,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 05:50:48,424 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 05:50:48,424 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 05:50:48,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 05:50:48,424 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 05:50:48,425 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 05:50:48,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 05:50:48,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 05:50:48,425 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ed3942f8a28a8a24515254c1482e383d8fc6f528b158a90f262f1167d5b8c4f [2021-12-17 05:50:48,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 05:50:48,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 05:50:48,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 05:50:48,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 05:50:48,613 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 05:50:48,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-12-17 05:50:48,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2bc3faab/2b6377c7e67f47958f3be03c045063a7/FLAGe5222f4eb [2021-12-17 05:50:49,064 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 05:50:49,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-12-17 05:50:49,073 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2bc3faab/2b6377c7e67f47958f3be03c045063a7/FLAGe5222f4eb [2021-12-17 05:50:49,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2bc3faab/2b6377c7e67f47958f3be03c045063a7 [2021-12-17 05:50:49,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 05:50:49,089 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 05:50:49,090 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 05:50:49,090 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 05:50:49,092 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 05:50:49,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:50:49" (1/1) ... [2021-12-17 05:50:49,094 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec42034 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:49, skipping insertion in model container [2021-12-17 05:50:49,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:50:49" (1/1) ... [2021-12-17 05:50:49,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 05:50:49,112 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 05:50:49,234 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1743,1756] [2021-12-17 05:50:49,236 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 05:50:49,241 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 05:50:49,252 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1743,1756] [2021-12-17 05:50:49,252 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 05:50:49,261 INFO L208 MainTranslator]: Completed translation [2021-12-17 05:50:49,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:49 WrapperNode [2021-12-17 05:50:49,262 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 05:50:49,263 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 05:50:49,263 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 05:50:49,263 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 05:50:49,281 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:49" (1/1) ... [2021-12-17 05:50:49,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:49" (1/1) ... [2021-12-17 05:50:49,300 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2021-12-17 05:50:49,300 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 05:50:49,301 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 05:50:49,301 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 05:50:49,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 05:50:49,306 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:49" (1/1) ... [2021-12-17 05:50:49,306 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:49" (1/1) ... [2021-12-17 05:50:49,308 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:49" (1/1) ... [2021-12-17 05:50:49,308 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:49" (1/1) ... [2021-12-17 05:50:49,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:49" (1/1) ... [2021-12-17 05:50:49,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:49" (1/1) ... [2021-12-17 05:50:49,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:49" (1/1) ... [2021-12-17 05:50:49,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 05:50:49,314 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 05:50:49,314 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 05:50:49,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 05:50:49,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:49" (1/1) ... [2021-12-17 05:50:49,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 05:50:49,334 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 05:50:49,351 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) [2021-12-17 05:50:49,353 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 [2021-12-17 05:50:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 05:50:49,380 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-17 05:50:49,380 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-17 05:50:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-17 05:50:49,381 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-17 05:50:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 05:50:49,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 05:50:49,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 05:50:49,428 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 05:50:49,429 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 05:50:49,544 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 05:50:49,548 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 05:50:49,548 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 05:50:49,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:50:49 BoogieIcfgContainer [2021-12-17 05:50:49,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 05:50:49,550 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 05:50:49,550 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 05:50:49,552 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 05:50:49,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 05:50:49" (1/3) ... [2021-12-17 05:50:49,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100f0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:50:49, skipping insertion in model container [2021-12-17 05:50:49,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:49" (2/3) ... [2021-12-17 05:50:49,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100f0f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:50:49, skipping insertion in model container [2021-12-17 05:50:49,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:50:49" (3/3) ... [2021-12-17 05:50:49,555 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_7.i [2021-12-17 05:50:49,558 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 05:50:49,558 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 05:50:49,586 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 05:50:49,591 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 [2021-12-17 05:50:49,591 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 05:50:49,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 05:50:49,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 05:50:49,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:50:49,605 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:50:49,606 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:50:49,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:50:49,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2021-12-17 05:50:49,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:50:49,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121135596] [2021-12-17 05:50:49,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:50:49,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:50:49,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:50:49,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-17 05:50:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:50:49,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-17 05:50:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:50:49,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-17 05:50:49,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:50:49,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-17 05:50:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:50:49,752 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 05:50:49,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:50:49,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121135596] [2021-12-17 05:50:49,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121135596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:50:49,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:50:49,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 05:50:49,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641675449] [2021-12-17 05:50:49,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:50:49,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 05:50:49,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:50:49,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 05:50:49,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 05:50:49,776 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 05:50:49,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:50:49,787 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-12-17 05:50:49,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 05:50:49,789 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2021-12-17 05:50:49,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:50:49,793 INFO L225 Difference]: With dead ends: 43 [2021-12-17 05:50:49,793 INFO L226 Difference]: Without dead ends: 19 [2021-12-17 05:50:49,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 05:50:49,798 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 05:50:49,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 05:50:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-17 05:50:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-17 05:50:49,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 05:50:49,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-17 05:50:49,821 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2021-12-17 05:50:49,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:50:49,821 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-17 05:50:49,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 05:50:49,822 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-17 05:50:49,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 05:50:49,823 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:50:49,823 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:50:49,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 05:50:49,824 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:50:49,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:50:49,824 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2021-12-17 05:50:49,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:50:49,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477623663] [2021-12-17 05:50:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:50:49,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:50:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 05:50:49,847 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 05:50:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 05:50:49,930 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 05:50:49,930 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 05:50:49,931 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 05:50:49,933 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 05:50:49,935 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-17 05:50:49,937 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 05:50:49,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 05:50:49 BoogieIcfgContainer [2021-12-17 05:50:49,960 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 05:50:49,960 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 05:50:49,960 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 05:50:49,961 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 05:50:49,961 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:50:49" (3/4) ... [2021-12-17 05:50:49,963 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-17 05:50:49,963 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 05:50:49,964 INFO L158 Benchmark]: Toolchain (without parser) took 875.11ms. Allocated memory is still 115.3MB. Free memory was 84.4MB in the beginning and 88.2MB in the end (delta: -3.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 05:50:49,965 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 81.8MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 05:50:49,966 INFO L158 Benchmark]: CACSL2BoogieTranslator took 172.26ms. Allocated memory is still 115.3MB. Free memory was 84.1MB in the beginning and 90.5MB in the end (delta: -6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 05:50:49,969 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.56ms. Allocated memory is still 115.3MB. Free memory was 90.1MB in the beginning and 88.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 05:50:49,970 INFO L158 Benchmark]: Boogie Preprocessor took 12.38ms. Allocated memory is still 115.3MB. Free memory was 88.8MB in the beginning and 87.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 05:50:49,972 INFO L158 Benchmark]: RCFGBuilder took 235.45ms. Allocated memory is still 115.3MB. Free memory was 87.6MB in the beginning and 78.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 05:50:49,973 INFO L158 Benchmark]: TraceAbstraction took 409.60ms. Allocated memory is still 115.3MB. Free memory was 78.3MB in the beginning and 88.2MB in the end (delta: -9.8MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 05:50:49,975 INFO L158 Benchmark]: Witness Printer took 3.05ms. Allocated memory is still 115.3MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 05:50:49,977 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 81.8MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 70.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 172.26ms. Allocated memory is still 115.3MB. Free memory was 84.1MB in the beginning and 90.5MB in the end (delta: -6.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.56ms. Allocated memory is still 115.3MB. Free memory was 90.1MB in the beginning and 88.8MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.38ms. Allocated memory is still 115.3MB. Free memory was 88.8MB in the beginning and 87.6MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 235.45ms. Allocated memory is still 115.3MB. Free memory was 87.6MB in the beginning and 78.8MB in the end (delta: 8.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 409.60ms. Allocated memory is still 115.3MB. Free memory was 78.3MB in the beginning and 88.2MB in the end (delta: -9.8MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.05ms. Allocated memory is still 115.3MB. Free memory is still 88.2MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L42] CALL, EXPR f(IN) VAL [\old(x)=49] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L42] RET, EXPR f(IN) VAL [f(IN)=50, IN=49] [L42] CALL, EXPR fp(IN) VAL [\old(x)=49] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L42] RET, EXPR fp(IN) VAL [f(IN)=50, fp(IN)=53, IN=49] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=51] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=51, x=51] [L44] RET, EXPR f(x) VAL [f(x)=52, IN=49, x=51] [L44] CALL, EXPR fp(x) VAL [\old(x)=51] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=51, x=51] [L44] RET, EXPR fp(x) VAL [f(x)=52, fp(x)=54, IN=49, x=51] [L44] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=49] [L51] reach_error() VAL [IN=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, 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, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 24 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-17 05:50:50,008 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_2_7.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 1ed3942f8a28a8a24515254c1482e383d8fc6f528b158a90f262f1167d5b8c4f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 05:50:51,809 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 05:50:51,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 05:50:51,845 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 05:50:51,846 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 05:50:51,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 05:50:51,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 05:50:51,853 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 05:50:51,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 05:50:51,858 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 05:50:51,859 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 05:50:51,860 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 05:50:51,860 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 05:50:51,862 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 05:50:51,863 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 05:50:51,867 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 05:50:51,868 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 05:50:51,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 05:50:51,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 05:50:51,874 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 05:50:51,875 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 05:50:51,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 05:50:51,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 05:50:51,878 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 05:50:51,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 05:50:51,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 05:50:51,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 05:50:51,880 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 05:50:51,881 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 05:50:51,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 05:50:51,882 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 05:50:51,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 05:50:51,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 05:50:51,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 05:50:51,885 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 05:50:51,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 05:50:51,886 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 05:50:51,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 05:50:51,887 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 05:50:51,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 05:50:51,888 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 05:50:51,889 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-17 05:50:51,912 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 05:50:51,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 05:50:51,913 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 05:50:51,913 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 05:50:51,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 05:50:51,914 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 05:50:51,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 05:50:51,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 05:50:51,915 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 05:50:51,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 05:50:51,916 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 05:50:51,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 05:50:51,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 05:50:51,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 05:50:51,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 05:50:51,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 05:50:51,917 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-17 05:50:51,917 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-17 05:50:51,917 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-17 05:50:51,917 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 05:50:51,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 05:50:51,917 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 05:50:51,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 05:50:51,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 05:50:51,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 05:50:51,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 05:50:51,918 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 05:50:51,918 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 05:50:51,918 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 05:50:51,918 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 05:50:51,919 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-17 05:50:51,919 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-17 05:50:51,919 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 05:50:51,919 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 05:50:51,919 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 05:50:51,919 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 05:50:51,919 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-17 05:50:51,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ed3942f8a28a8a24515254c1482e383d8fc6f528b158a90f262f1167d5b8c4f [2021-12-17 05:50:52,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 05:50:52,184 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 05:50:52,186 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 05:50:52,187 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 05:50:52,187 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 05:50:52,188 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-12-17 05:50:52,227 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e45f01389/7aeb6a6acdc9405592a2f66f2a0a57cd/FLAG0742557d3 [2021-12-17 05:50:52,544 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 05:50:52,544 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_7.i [2021-12-17 05:50:52,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e45f01389/7aeb6a6acdc9405592a2f66f2a0a57cd/FLAG0742557d3 [2021-12-17 05:50:52,972 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e45f01389/7aeb6a6acdc9405592a2f66f2a0a57cd [2021-12-17 05:50:52,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 05:50:52,977 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 05:50:52,980 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 05:50:52,981 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 05:50:52,983 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 05:50:52,984 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:50:52" (1/1) ... [2021-12-17 05:50:52,986 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1969162f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:52, skipping insertion in model container [2021-12-17 05:50:52,986 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:50:52" (1/1) ... [2021-12-17 05:50:52,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 05:50:53,002 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 05:50:53,116 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1743,1756] [2021-12-17 05:50:53,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 05:50:53,134 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 05:50:53,181 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_7.i[1743,1756] [2021-12-17 05:50:53,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 05:50:53,193 INFO L208 MainTranslator]: Completed translation [2021-12-17 05:50:53,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:53 WrapperNode [2021-12-17 05:50:53,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 05:50:53,195 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 05:50:53,195 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 05:50:53,195 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 05:50:53,200 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:53" (1/1) ... [2021-12-17 05:50:53,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:53" (1/1) ... [2021-12-17 05:50:53,223 INFO L137 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2021-12-17 05:50:53,224 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 05:50:53,225 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 05:50:53,225 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 05:50:53,225 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 05:50:53,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:53" (1/1) ... [2021-12-17 05:50:53,231 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:53" (1/1) ... [2021-12-17 05:50:53,235 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:53" (1/1) ... [2021-12-17 05:50:53,235 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:53" (1/1) ... [2021-12-17 05:50:53,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:53" (1/1) ... [2021-12-17 05:50:53,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:53" (1/1) ... [2021-12-17 05:50:53,256 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:53" (1/1) ... [2021-12-17 05:50:53,258 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 05:50:53,259 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 05:50:53,259 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 05:50:53,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 05:50:53,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:53" (1/1) ... [2021-12-17 05:50:53,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 05:50:53,270 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 05:50:53,279 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) [2021-12-17 05:50:53,312 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 [2021-12-17 05:50:53,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 05:50:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-17 05:50:53,324 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-17 05:50:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-17 05:50:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-17 05:50:53,324 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-17 05:50:53,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 05:50:53,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 05:50:53,375 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 05:50:53,377 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 05:51:02,035 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 05:51:02,039 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 05:51:02,039 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 05:51:02,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:51:02 BoogieIcfgContainer [2021-12-17 05:51:02,041 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 05:51:02,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 05:51:02,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 05:51:02,044 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 05:51:02,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 05:50:52" (1/3) ... [2021-12-17 05:51:02,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ecc72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:51:02, skipping insertion in model container [2021-12-17 05:51:02,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:50:53" (2/3) ... [2021-12-17 05:51:02,045 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17ecc72d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:51:02, skipping insertion in model container [2021-12-17 05:51:02,045 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:51:02" (3/3) ... [2021-12-17 05:51:02,046 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_7.i [2021-12-17 05:51:02,049 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 05:51:02,049 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 05:51:02,094 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 05:51:02,099 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 [2021-12-17 05:51:02,099 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 05:51:02,109 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 05:51:02,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 05:51:02,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:51:02,114 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:51:02,114 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:51:02,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:51:02,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2021-12-17 05:51:02,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 05:51:02,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538398907] [2021-12-17 05:51:02,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:51:02,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 05:51:02,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 05:51:02,138 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) [2021-12-17 05:51:02,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-17 05:51:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:51:03,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 05:51:03,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 05:51:04,189 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-17 05:51:04,190 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 05:51:04,190 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 05:51:04,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538398907] [2021-12-17 05:51:04,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538398907] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:51:04,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:51:04,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 05:51:04,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673589853] [2021-12-17 05:51:04,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:51:04,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 05:51:04,197 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 05:51:04,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 05:51:04,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 05:51:04,222 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 05:51:04,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:51:04,236 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-12-17 05:51:04,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 05:51:04,240 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2021-12-17 05:51:04,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:51:04,244 INFO L225 Difference]: With dead ends: 43 [2021-12-17 05:51:04,244 INFO L226 Difference]: Without dead ends: 19 [2021-12-17 05:51:04,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 05:51:04,249 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 05:51:04,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 05:51:04,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-17 05:51:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-17 05:51:04,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-12-17 05:51:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-17 05:51:04,285 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2021-12-17 05:51:04,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:51:04,286 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-17 05:51:04,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-17 05:51:04,287 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-17 05:51:04,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-17 05:51:04,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:51:04,288 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:51:04,343 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-17 05:51:04,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 05:51:04,493 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:51:04,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:51:04,494 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2021-12-17 05:51:04,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 05:51:04,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [989328116] [2021-12-17 05:51:04,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:51:04,495 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 05:51:04,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 05:51:04,498 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) [2021-12-17 05:51:04,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-17 05:54:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 05:54:34,290 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 05:54:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 05:54:49,162 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-17 05:54:49,162 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 05:54:49,163 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 05:54:49,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-17 05:54:49,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-17 05:54:49,369 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-17 05:54:49,371 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 05:54:49,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 05:54:49 BoogieIcfgContainer [2021-12-17 05:54:49,409 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 05:54:49,411 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 05:54:49,411 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 05:54:49,411 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 05:54:49,412 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:51:02" (3/4) ... [2021-12-17 05:54:49,413 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-17 05:54:49,464 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-17 05:54:49,467 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 05:54:49,468 INFO L158 Benchmark]: Toolchain (without parser) took 236491.27ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 37.9MB in the beginning and 45.4MB in the end (delta: -7.4MB). Peak memory consumption was 3.4MB. Max. memory is 16.1GB. [2021-12-17 05:54:49,469 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 05:54:49,469 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.12ms. Allocated memory is still 58.7MB. Free memory was 37.8MB in the beginning and 41.7MB in the end (delta: -3.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-17 05:54:49,470 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.91ms. Allocated memory is still 58.7MB. Free memory was 41.7MB in the beginning and 40.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 05:54:49,470 INFO L158 Benchmark]: Boogie Preprocessor took 33.03ms. Allocated memory is still 58.7MB. Free memory was 40.3MB in the beginning and 38.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 05:54:49,471 INFO L158 Benchmark]: RCFGBuilder took 8781.76ms. Allocated memory is still 58.7MB. Free memory was 38.9MB in the beginning and 30.2MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 05:54:49,471 INFO L158 Benchmark]: TraceAbstraction took 227367.57ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 29.7MB in the beginning and 47.5MB in the end (delta: -17.7MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 05:54:49,471 INFO L158 Benchmark]: Witness Printer took 56.88ms. Allocated memory is still 71.3MB. Free memory was 47.5MB in the beginning and 45.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 05:54:49,472 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 58.7MB. Free memory was 40.9MB in the beginning and 40.9MB in the end (delta: 38.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.12ms. Allocated memory is still 58.7MB. Free memory was 37.8MB in the beginning and 41.7MB in the end (delta: -3.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 28.91ms. Allocated memory is still 58.7MB. Free memory was 41.7MB in the beginning and 40.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 33.03ms. Allocated memory is still 58.7MB. Free memory was 40.3MB in the beginning and 38.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 8781.76ms. Allocated memory is still 58.7MB. Free memory was 38.9MB in the beginning and 30.2MB in the end (delta: 8.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 227367.57ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 29.7MB in the beginning and 47.5MB in the end (delta: -17.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 56.88ms. Allocated memory is still 71.3MB. Free memory was 47.5MB in the beginning and 45.4MB 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 > -1.4f && IN < 1.4f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -1.4f && IN < 1.4f) [L42] CALL, EXPR f(IN) VAL [\old(x)=-1.3787423372268677] [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)=-1.3787423372268677, \result=-0.9853237271308899, x=-1.3787423372268677] [L42] RET, EXPR f(IN) VAL [f(IN)=-0.9853237271308899, IN=-1.3787423372268677] [L42] CALL, EXPR fp(IN) VAL [\old(x)=-1.3787423372268677] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=-1.3787423372268677, \result=0.20963920652866364, x=-1.3787423372268677] [L42] RET, EXPR fp(IN) VAL [f(IN)=-0.9853237271308899, fp(IN)=0.20963920652866364, IN=-1.3787423372268677] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=3.321350574493408] [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)=3.321350574493408, \result=1.4676520824432373, x=3.321350574493408] [L44] RET, EXPR f(x) VAL [f(x)=1.4676520824432373, IN=-1.3787423372268677, x=3.321350574493408] [L44] CALL, EXPR fp(x) VAL [\old(x)=3.321350574493408] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=3.321350574493408, \result=2.41925048828125, x=3.321350574493408] [L44] RET, EXPR fp(x) VAL [f(x)=1.4676520824432373, fp(x)=2.41925048828125, IN=-1.3787423372268677, x=3.321350574493408] [L44] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=-1.3787423372268677, x=2.7146949768066406] [L51] reach_error() VAL [IN=-1.3787423372268677, x=2.7146949768066406] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 227.3s, OverallIterations: 2, TraceHistogramMax: 2, 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, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 24 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 211.4s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 49 ConjunctsInSsa, 1 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-17 05:54:49,613 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