./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_3_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_3.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 80fd4740764bb080a15992509adea65cef879c142a7dc8c64ce34585d70bbeaf --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 13:56:15,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 13:56:15,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 13:56:15,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 13:56:15,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 13:56:15,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 13:56:15,236 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 13:56:15,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 13:56:15,238 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 13:56:15,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 13:56:15,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 13:56:15,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 13:56:15,240 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 13:56:15,241 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 13:56:15,242 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 13:56:15,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 13:56:15,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 13:56:15,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 13:56:15,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 13:56:15,256 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 13:56:15,260 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 13:56:15,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 13:56:15,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 13:56:15,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 13:56:15,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 13:56:15,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 13:56:15,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 13:56:15,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 13:56:15,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 13:56:15,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 13:56:15,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 13:56:15,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 13:56:15,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 13:56:15,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 13:56:15,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 13:56:15,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 13:56:15,273 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 13:56:15,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 13:56:15,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 13:56:15,274 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 13:56:15,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 13:56:15,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 13:56:15,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 13:56:15,297 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 13:56:15,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 13:56:15,298 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 13:56:15,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 13:56:15,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 13:56:15,299 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 13:56:15,299 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 13:56:15,299 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 13:56:15,300 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 13:56:15,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 13:56:15,300 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 13:56:15,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 13:56:15,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 13:56:15,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 13:56:15,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 13:56:15,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 13:56:15,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 13:56:15,301 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 13:56:15,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 13:56:15,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 13:56:15,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 13:56:15,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 13:56:15,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 13:56:15,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 13:56:15,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 13:56:15,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 13:56:15,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 13:56:15,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 13:56:15,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 13:56:15,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 13:56:15,303 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 13:56:15,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 13:56:15,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 13:56:15,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80fd4740764bb080a15992509adea65cef879c142a7dc8c64ce34585d70bbeaf [2022-07-13 13:56:15,476 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 13:56:15,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 13:56:15,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 13:56:15,494 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 13:56:15,494 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 13:56:15,495 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_3.i [2022-07-13 13:56:15,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e97ac514/235c465dcb844d0c8de23b98b1714963/FLAG94796371e [2022-07-13 13:56:15,883 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 13:56:15,885 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_3.i [2022-07-13 13:56:15,889 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e97ac514/235c465dcb844d0c8de23b98b1714963/FLAG94796371e [2022-07-13 13:56:15,897 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e97ac514/235c465dcb844d0c8de23b98b1714963 [2022-07-13 13:56:15,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 13:56:15,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 13:56:15,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 13:56:15,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 13:56:15,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 13:56:15,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:56:15" (1/1) ... [2022-07-13 13:56:15,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d4a9dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:15, skipping insertion in model container [2022-07-13 13:56:15,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:56:15" (1/1) ... [2022-07-13 13:56:15,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 13:56:15,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 13:56:16,084 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_3.i[1764,1777] [2022-07-13 13:56:16,088 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 13:56:16,094 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 13:56:16,115 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_3.i[1764,1777] [2022-07-13 13:56:16,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 13:56:16,127 INFO L208 MainTranslator]: Completed translation [2022-07-13 13:56:16,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:16 WrapperNode [2022-07-13 13:56:16,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 13:56:16,128 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 13:56:16,128 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 13:56:16,128 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 13:56:16,132 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:16" (1/1) ... [2022-07-13 13:56:16,137 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:16" (1/1) ... [2022-07-13 13:56:16,148 INFO L137 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-07-13 13:56:16,148 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 13:56:16,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 13:56:16,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 13:56:16,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 13:56:16,154 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:16" (1/1) ... [2022-07-13 13:56:16,154 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:16" (1/1) ... [2022-07-13 13:56:16,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:16" (1/1) ... [2022-07-13 13:56:16,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:16" (1/1) ... [2022-07-13 13:56:16,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:16" (1/1) ... [2022-07-13 13:56:16,171 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:16" (1/1) ... [2022-07-13 13:56:16,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:16" (1/1) ... [2022-07-13 13:56:16,173 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 13:56:16,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 13:56:16,174 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 13:56:16,174 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 13:56:16,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:16" (1/1) ... [2022-07-13 13:56:16,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 13:56:16,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:56:16,197 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 13:56:16,216 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 13:56:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 13:56:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-13 13:56:16,226 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-13 13:56:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-13 13:56:16,226 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-13 13:56:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 13:56:16,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 13:56:16,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 13:56:16,269 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 13:56:16,271 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 13:56:16,379 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 13:56:16,383 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 13:56:16,383 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 13:56:16,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:56:16 BoogieIcfgContainer [2022-07-13 13:56:16,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 13:56:16,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 13:56:16,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 13:56:16,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 13:56:16,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 01:56:15" (1/3) ... [2022-07-13 13:56:16,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e05654f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:56:16, skipping insertion in model container [2022-07-13 13:56:16,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:16" (2/3) ... [2022-07-13 13:56:16,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e05654f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:56:16, skipping insertion in model container [2022-07-13 13:56:16,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:56:16" (3/3) ... [2022-07-13 13:56:16,407 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_3.i [2022-07-13 13:56:16,416 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 13:56:16,418 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 13:56:16,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 13:56:16,469 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@785418ce, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@84bd9cb [2022-07-13 13:56:16,469 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 13:56:16,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 13:56:16,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-13 13:56:16,479 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:56:16,479 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:56:16,480 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:56:16,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:56:16,483 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2022-07-13 13:56:16,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:56:16,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523802850] [2022-07-13 13:56:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:56:16,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:56:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:56:16,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 13:56:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:56:16,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 13:56:16,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:56:16,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 13:56:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:56:16,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-13 13:56:16,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:56:16,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 13:56:16,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:56:16,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-13 13:56:16,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:56:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 13:56:16,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:56:16,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523802850] [2022-07-13 13:56:16,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523802850] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:56:16,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:56:16,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 13:56:16,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619651682] [2022-07-13 13:56:16,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:56:16,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 13:56:16,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:56:16,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 13:56:16,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 13:56:16,673 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 13:56:16,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:56:16,688 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-07-13 13:56:16,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 13:56:16,689 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2022-07-13 13:56:16,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:56:16,693 INFO L225 Difference]: With dead ends: 49 [2022-07-13 13:56:16,693 INFO L226 Difference]: Without dead ends: 22 [2022-07-13 13:56:16,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 13:56:16,701 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 13:56:16,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 13:56:16,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-13 13:56:16,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-13 13:56:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 13:56:16,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-13 13:56:16,731 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2022-07-13 13:56:16,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:56:16,732 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-13 13:56:16,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 13:56:16,732 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-13 13:56:16,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-13 13:56:16,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:56:16,734 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:56:16,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 13:56:16,735 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:56:16,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:56:16,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2022-07-13 13:56:16,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:56:16,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530556753] [2022-07-13 13:56:16,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:56:16,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:56:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 13:56:16,768 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-13 13:56:16,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-13 13:56:16,820 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-13 13:56:16,821 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-13 13:56:16,824 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-13 13:56:16,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 13:56:16,830 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-13 13:56:16,833 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 13:56:16,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 01:56:16 BoogieIcfgContainer [2022-07-13 13:56:16,858 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 13:56:16,859 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 13:56:16,859 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 13:56:16,859 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 13:56:16,859 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:56:16" (3/4) ... [2022-07-13 13:56:16,861 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-13 13:56:16,861 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 13:56:16,862 INFO L158 Benchmark]: Toolchain (without parser) took 962.14ms. Allocated memory is still 127.9MB. Free memory was 96.3MB in the beginning and 100.7MB in the end (delta: -4.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 13:56:16,862 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 81.8MB. Free memory was 40.7MB in the beginning and 40.6MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 13:56:16,863 INFO L158 Benchmark]: CACSL2BoogieTranslator took 227.38ms. Allocated memory is still 127.9MB. Free memory was 96.0MB in the beginning and 101.9MB in the end (delta: -5.9MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. [2022-07-13 13:56:16,867 INFO L158 Benchmark]: Boogie Procedure Inliner took 19.86ms. Allocated memory is still 127.9MB. Free memory was 101.9MB in the beginning and 100.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 13:56:16,868 INFO L158 Benchmark]: Boogie Preprocessor took 24.05ms. Allocated memory is still 127.9MB. Free memory was 100.5MB in the beginning and 99.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 13:56:16,869 INFO L158 Benchmark]: RCFGBuilder took 211.16ms. Allocated memory is still 127.9MB. Free memory was 99.4MB in the beginning and 90.1MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-13 13:56:16,869 INFO L158 Benchmark]: TraceAbstraction took 472.72ms. Allocated memory is still 127.9MB. Free memory was 89.8MB in the beginning and 101.4MB in the end (delta: -11.6MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. [2022-07-13 13:56:16,870 INFO L158 Benchmark]: Witness Printer took 2.33ms. Allocated memory is still 127.9MB. Free memory was 101.4MB in the beginning and 100.7MB in the end (delta: 639.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 13:56:16,874 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 81.8MB. Free memory was 40.7MB in the beginning and 40.6MB in the end (delta: 40.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 227.38ms. Allocated memory is still 127.9MB. Free memory was 96.0MB in the beginning and 101.9MB in the end (delta: -5.9MB). Peak memory consumption was 9.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 19.86ms. Allocated memory is still 127.9MB. Free memory was 101.9MB in the beginning and 100.5MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 24.05ms. Allocated memory is still 127.9MB. Free memory was 100.5MB in the beginning and 99.4MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 211.16ms. Allocated memory is still 127.9MB. Free memory was 99.4MB in the beginning and 90.1MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 472.72ms. Allocated memory is still 127.9MB. Free memory was 89.8MB in the beginning and 101.4MB in the end (delta: -11.6MB). Peak memory consumption was 29.7MB. Max. memory is 16.1GB. * Witness Printer took 2.33ms. Allocated memory is still 127.9MB. Free memory was 101.4MB in the beginning and 100.7MB in the end (delta: 639.8kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -0.6f && IN < 0.6f) [L42] CALL, EXPR f(IN) VAL [\old(x)=50] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=50, x=50] [L42] RET, EXPR f(IN) VAL [f(IN)=51, IN=50] [L42] CALL, EXPR fp(IN) VAL [\old(x)=50] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=50, x=50] [L42] RET, EXPR fp(IN) VAL [f(IN)=51, fp(IN)=55, IN=50] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=52] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=52, x=52] [L44] RET, EXPR f(x) VAL [f(x)=53, IN=50, x=52] [L44] CALL, EXPR fp(x) VAL [\old(x)=52] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=52, x=52] [L44] RET, EXPR fp(x) VAL [f(x)=53, fp(x)=56, IN=50, x=52] [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) VAL [\old(x)=54] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=54, x=54] [L46] RET, EXPR f(x) VAL [f(x)=57, IN=50, x=54] [L46] CALL, EXPR fp(x) VAL [\old(x)=54] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=54, x=54] [L46] RET, EXPR fp(x) VAL [f(x)=57, fp(x)=49, IN=50, x=54] [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=50] [L51] reach_error() VAL [IN=50] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 29 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 18/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-13 13:56:16,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_3.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 80fd4740764bb080a15992509adea65cef879c142a7dc8c64ce34585d70bbeaf --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 13:56:18,489 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 13:56:18,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 13:56:18,523 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 13:56:18,523 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 13:56:18,524 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 13:56:18,527 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 13:56:18,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 13:56:18,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 13:56:18,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 13:56:18,535 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 13:56:18,538 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 13:56:18,538 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 13:56:18,539 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 13:56:18,540 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 13:56:18,542 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 13:56:18,543 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 13:56:18,544 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 13:56:18,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 13:56:18,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 13:56:18,550 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 13:56:18,550 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 13:56:18,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 13:56:18,552 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 13:56:18,553 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 13:56:18,566 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 13:56:18,566 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 13:56:18,566 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 13:56:18,567 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 13:56:18,567 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 13:56:18,568 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 13:56:18,568 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 13:56:18,569 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 13:56:18,570 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 13:56:18,571 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 13:56:18,571 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 13:56:18,572 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 13:56:18,572 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 13:56:18,572 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 13:56:18,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 13:56:18,573 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 13:56:18,574 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 13:56:18,578 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-13 13:56:18,601 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 13:56:18,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 13:56:18,602 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 13:56:18,602 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 13:56:18,603 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 13:56:18,603 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 13:56:18,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 13:56:18,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 13:56:18,604 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 13:56:18,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 13:56:18,604 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 13:56:18,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 13:56:18,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 13:56:18,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 13:56:18,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 13:56:18,605 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 13:56:18,605 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-13 13:56:18,606 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-13 13:56:18,606 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-13 13:56:18,606 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 13:56:18,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 13:56:18,606 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 13:56:18,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 13:56:18,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 13:56:18,607 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 13:56:18,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 13:56:18,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 13:56:18,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 13:56:18,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 13:56:18,607 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 13:56:18,607 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-13 13:56:18,608 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-13 13:56:18,608 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 13:56:18,608 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 13:56:18,608 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 13:56:18,608 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-13 13:56:18,608 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 80fd4740764bb080a15992509adea65cef879c142a7dc8c64ce34585d70bbeaf [2022-07-13 13:56:18,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 13:56:18,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 13:56:18,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 13:56:18,876 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 13:56:18,877 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 13:56:18,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_3.i [2022-07-13 13:56:18,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a655e9e/a767ac9daf0645ad829dcf0dce4fd7ba/FLAG041ff7855 [2022-07-13 13:56:19,283 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 13:56:19,284 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_3.i [2022-07-13 13:56:19,288 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a655e9e/a767ac9daf0645ad829dcf0dce4fd7ba/FLAG041ff7855 [2022-07-13 13:56:19,300 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86a655e9e/a767ac9daf0645ad829dcf0dce4fd7ba [2022-07-13 13:56:19,301 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 13:56:19,302 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 13:56:19,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 13:56:19,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 13:56:19,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 13:56:19,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:56:19" (1/1) ... [2022-07-13 13:56:19,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d2c565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:19, skipping insertion in model container [2022-07-13 13:56:19,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:56:19" (1/1) ... [2022-07-13 13:56:19,312 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 13:56:19,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 13:56:19,443 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_3.i[1764,1777] [2022-07-13 13:56:19,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 13:56:19,487 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 13:56:19,510 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_3.i[1764,1777] [2022-07-13 13:56:19,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 13:56:19,522 INFO L208 MainTranslator]: Completed translation [2022-07-13 13:56:19,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:19 WrapperNode [2022-07-13 13:56:19,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 13:56:19,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 13:56:19,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 13:56:19,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 13:56:19,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:19" (1/1) ... [2022-07-13 13:56:19,541 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:19" (1/1) ... [2022-07-13 13:56:19,553 INFO L137 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-07-13 13:56:19,554 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 13:56:19,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 13:56:19,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 13:56:19,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 13:56:19,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:19" (1/1) ... [2022-07-13 13:56:19,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:19" (1/1) ... [2022-07-13 13:56:19,567 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:19" (1/1) ... [2022-07-13 13:56:19,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:19" (1/1) ... [2022-07-13 13:56:19,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:19" (1/1) ... [2022-07-13 13:56:19,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:19" (1/1) ... [2022-07-13 13:56:19,577 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:19" (1/1) ... [2022-07-13 13:56:19,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 13:56:19,579 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 13:56:19,579 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 13:56:19,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 13:56:19,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:19" (1/1) ... [2022-07-13 13:56:19,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 13:56:19,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:56:19,602 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 13:56:19,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 13:56:19,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 13:56:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-13 13:56:19,630 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-13 13:56:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-13 13:56:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-13 13:56:19,630 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-13 13:56:19,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 13:56:19,630 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 13:56:19,675 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 13:56:19,676 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 13:56:29,011 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 13:56:29,014 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 13:56:29,015 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 13:56:29,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:56:29 BoogieIcfgContainer [2022-07-13 13:56:29,019 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 13:56:29,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 13:56:29,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 13:56:29,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 13:56:29,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 01:56:19" (1/3) ... [2022-07-13 13:56:29,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e239778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:56:29, skipping insertion in model container [2022-07-13 13:56:29,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:56:19" (2/3) ... [2022-07-13 13:56:29,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e239778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:56:29, skipping insertion in model container [2022-07-13 13:56:29,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:56:29" (3/3) ... [2022-07-13 13:56:29,024 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_3.i [2022-07-13 13:56:29,032 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 13:56:29,033 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 13:56:29,069 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 13:56:29,073 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3cac7e92, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@22ff9fcf [2022-07-13 13:56:29,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 13:56:29,076 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 13:56:29,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-13 13:56:29,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:56:29,081 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:56:29,082 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:56:29,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:56:29,086 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2022-07-13 13:56:29,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 13:56:29,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789236323] [2022-07-13 13:56:29,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:56:29,105 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 13:56:29,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 13:56:29,121 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 13:56:29,122 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-13 13:56:31,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:56:31,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-13 13:56:31,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:56:31,582 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 13:56:31,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 13:56:31,583 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-13 13:56:31,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789236323] [2022-07-13 13:56:31,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789236323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:56:31,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:56:31,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 13:56:31,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957028892] [2022-07-13 13:56:31,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:56:31,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 13:56:31,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-13 13:56:31,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 13:56:31,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 13:56:31,603 INFO L87 Difference]: Start difference. First operand has 26 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 13:56:31,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:56:31,614 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-07-13 13:56:31,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 13:56:31,617 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 33 [2022-07-13 13:56:31,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:56:31,620 INFO L225 Difference]: With dead ends: 49 [2022-07-13 13:56:31,620 INFO L226 Difference]: Without dead ends: 22 [2022-07-13 13:56:31,623 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 13:56:31,627 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 13:56:31,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 13:56:31,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-13 13:56:31,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-13 13:56:31,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.0) internal successors, (13), 13 states have internal predecessors, (13), 6 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-07-13 13:56:31,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-13 13:56:31,649 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2022-07-13 13:56:31,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:56:31,649 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-13 13:56:31,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-13 13:56:31,649 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-13 13:56:31,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-13 13:56:31,650 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:56:31,650 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:56:31,710 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-13 13:56:31,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-13 13:56:31,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:56:31,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:56:31,853 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2022-07-13 13:56:31,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-13 13:56:31,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [73026025] [2022-07-13 13:56:31,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:56:31,854 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-13 13:56:31,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-13 13:56:31,855 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-13 13:56:31,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process