./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_1_3.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_1_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 26fa7b1fc8948e323dc46aa278c02b07d6da75b1e07ffd01b89efc9a86bb90ce --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 05:49:26,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 05:49:26,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 05:49:26,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 05:49:26,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 05:49:26,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 05:49:26,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 05:49:26,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 05:49:26,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 05:49:26,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 05:49:26,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 05:49:26,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 05:49:26,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 05:49:26,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 05:49:26,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 05:49:26,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 05:49:26,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 05:49:26,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 05:49:26,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 05:49:26,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 05:49:26,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 05:49:26,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 05:49:26,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 05:49:26,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 05:49:26,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 05:49:26,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 05:49:26,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 05:49:26,188 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 05:49:26,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 05:49:26,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 05:49:26,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 05:49:26,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 05:49:26,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 05:49:26,191 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 05:49:26,192 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 05:49:26,196 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 05:49:26,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 05:49:26,197 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 05:49:26,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 05:49:26,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 05:49:26,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 05:49:26,199 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 05:49:26,214 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 05:49:26,214 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 05:49:26,214 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 05:49:26,214 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 05:49:26,215 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 05:49:26,215 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 05:49:26,215 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 05:49:26,215 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 05:49:26,216 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 05:49:26,216 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 05:49:26,216 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 05:49:26,216 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 05:49:26,216 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 05:49:26,216 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 05:49:26,216 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 05:49:26,217 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 05:49:26,217 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 05:49:26,217 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 05:49:26,217 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 05:49:26,217 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 05:49:26,217 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 05:49:26,218 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 05:49:26,218 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 05:49:26,218 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 05:49:26,218 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 05:49:26,218 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 05:49:26,218 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 05:49:26,219 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 05:49:26,219 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 05:49:26,219 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 05:49:26,219 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 05:49:26,219 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 05:49:26,219 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 05:49:26,219 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 05:49:26,220 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26fa7b1fc8948e323dc46aa278c02b07d6da75b1e07ffd01b89efc9a86bb90ce [2021-12-17 05:49:26,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 05:49:26,411 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 05:49:26,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 05:49:26,414 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 05:49:26,414 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 05:49:26,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_3.i [2021-12-17 05:49:26,489 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4061ce9b9/43559bdf295544149b45a5f6648ea99b/FLAGf713714c1 [2021-12-17 05:49:26,804 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 05:49:26,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_3.i [2021-12-17 05:49:26,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4061ce9b9/43559bdf295544149b45a5f6648ea99b/FLAGf713714c1 [2021-12-17 05:49:27,227 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4061ce9b9/43559bdf295544149b45a5f6648ea99b [2021-12-17 05:49:27,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 05:49:27,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 05:49:27,233 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 05:49:27,233 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 05:49:27,247 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 05:49:27,248 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:49:27" (1/1) ... [2021-12-17 05:49:27,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1faec1ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:27, skipping insertion in model container [2021-12-17 05:49:27,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:49:27" (1/1) ... [2021-12-17 05:49:27,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 05:49:27,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 05:49:27,397 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_3.i[1722,1735] [2021-12-17 05:49:27,400 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 05:49:27,405 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 05:49:27,418 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_3.i[1722,1735] [2021-12-17 05:49:27,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 05:49:27,427 INFO L208 MainTranslator]: Completed translation [2021-12-17 05:49:27,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:27 WrapperNode [2021-12-17 05:49:27,427 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 05:49:27,428 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 05:49:27,428 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 05:49:27,428 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 05:49:27,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:27" (1/1) ... [2021-12-17 05:49:27,438 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:27" (1/1) ... [2021-12-17 05:49:27,449 INFO L137 Inliner]: procedures = 17, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 30 [2021-12-17 05:49:27,449 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 05:49:27,450 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 05:49:27,450 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 05:49:27,450 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 05:49:27,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:27" (1/1) ... [2021-12-17 05:49:27,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:27" (1/1) ... [2021-12-17 05:49:27,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:27" (1/1) ... [2021-12-17 05:49:27,457 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:27" (1/1) ... [2021-12-17 05:49:27,459 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:27" (1/1) ... [2021-12-17 05:49:27,462 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:27" (1/1) ... [2021-12-17 05:49:27,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:27" (1/1) ... [2021-12-17 05:49:27,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 05:49:27,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 05:49:27,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 05:49:27,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 05:49:27,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:27" (1/1) ... [2021-12-17 05:49:27,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 05:49:27,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 05:49:27,509 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 05:49:27,519 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 05:49:27,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 05:49:27,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 05:49:27,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 05:49:27,545 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 05:49:27,584 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 05:49:27,585 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 05:49:27,662 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 05:49:27,666 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 05:49:27,667 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 05:49:27,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:49:27 BoogieIcfgContainer [2021-12-17 05:49:27,668 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 05:49:27,669 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 05:49:27,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 05:49:27,677 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 05:49:27,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 05:49:27" (1/3) ... [2021-12-17 05:49:27,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec84973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:49:27, skipping insertion in model container [2021-12-17 05:49:27,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:27" (2/3) ... [2021-12-17 05:49:27,679 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ec84973 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:49:27, skipping insertion in model container [2021-12-17 05:49:27,679 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:49:27" (3/3) ... [2021-12-17 05:49:27,680 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_3.i [2021-12-17 05:49:27,683 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 05:49:27,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 05:49:27,725 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 05:49:27,730 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 05:49:27,731 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 05:49:27,756 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:49:27,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-17 05:49:27,760 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:49:27,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:49:27,760 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:49:27,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:49:27,765 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-12-17 05:49:27,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:49:27,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711866135] [2021-12-17 05:49:27,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:49:27,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:49:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:49:27,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:49:27,908 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 05:49:27,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711866135] [2021-12-17 05:49:27,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711866135] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:49:27,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:49:27,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 05:49:27,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035249549] [2021-12-17 05:49:27,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:49:27,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 05:49:27,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 05:49:27,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 05:49:27,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 05:49:27,949 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:49:27,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:49:27,973 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-12-17 05:49:27,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 05:49:27,975 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-17 05:49:27,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:49:27,980 INFO L225 Difference]: With dead ends: 23 [2021-12-17 05:49:27,981 INFO L226 Difference]: Without dead ends: 9 [2021-12-17 05:49:27,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 05:49:27,987 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 05:49:27,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 05:49:28,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-17 05:49:28,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-17 05:49:28,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:49:28,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-12-17 05:49:28,015 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-12-17 05:49:28,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:49:28,016 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-12-17 05:49:28,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:49:28,016 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-12-17 05:49:28,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-17 05:49:28,017 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:49:28,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:49:28,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 05:49:28,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:49:28,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:49:28,021 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-12-17 05:49:28,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 05:49:28,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643681939] [2021-12-17 05:49:28,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:49:28,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 05:49:28,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 05:49:28,046 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-17 05:49:28,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-17 05:49:28,089 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-17 05:49:28,089 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-17 05:49:28,091 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-17 05:49:28,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 05:49:28,097 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-17 05:49:28,105 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-17 05:49:28,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 05:49:28 BoogieIcfgContainer [2021-12-17 05:49:28,126 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-17 05:49:28,127 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-17 05:49:28,128 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-17 05:49:28,128 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-17 05:49:28,128 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:49:27" (3/4) ... [2021-12-17 05:49:28,131 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-17 05:49:28,131 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-17 05:49:28,132 INFO L158 Benchmark]: Toolchain (without parser) took 901.64ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 70.9MB in the beginning and 90.1MB in the end (delta: -19.2MB). Peak memory consumption was 512.7kB. Max. memory is 16.1GB. [2021-12-17 05:49:28,133 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 59.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 05:49:28,134 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.54ms. Allocated memory is still 98.6MB. Free memory was 70.6MB in the beginning and 73.7MB in the end (delta: -3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 05:49:28,136 INFO L158 Benchmark]: Boogie Procedure Inliner took 21.05ms. Allocated memory is still 98.6MB. Free memory was 73.7MB in the beginning and 72.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-17 05:49:28,136 INFO L158 Benchmark]: Boogie Preprocessor took 19.95ms. Allocated memory is still 98.6MB. Free memory was 72.3MB in the beginning and 71.3MB in the end (delta: 992.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 05:49:28,138 INFO L158 Benchmark]: RCFGBuilder took 198.23ms. Allocated memory is still 98.6MB. Free memory was 71.3MB in the beginning and 62.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-17 05:49:28,138 INFO L158 Benchmark]: TraceAbstraction took 457.42ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 62.4MB in the beginning and 90.6MB in the end (delta: -28.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 05:49:28,139 INFO L158 Benchmark]: Witness Printer took 4.10ms. Allocated memory is still 119.5MB. Free memory is still 90.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-17 05:49:28,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 98.6MB. Free memory is still 59.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 194.54ms. Allocated memory is still 98.6MB. Free memory was 70.6MB in the beginning and 73.7MB in the end (delta: -3.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 21.05ms. Allocated memory is still 98.6MB. Free memory was 73.7MB in the beginning and 72.3MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.95ms. Allocated memory is still 98.6MB. Free memory was 72.3MB in the beginning and 71.3MB in the end (delta: 992.2kB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 198.23ms. Allocated memory is still 98.6MB. Free memory was 71.3MB in the beginning and 62.9MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 457.42ms. Allocated memory was 98.6MB in the beginning and 119.5MB in the end (delta: 21.0MB). Free memory was 62.4MB in the beginning and 90.6MB in the end (delta: -28.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 4.10ms. Allocated memory is still 119.5MB. Free memory is still 90.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 42. 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) [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L42] RET, EXPR f(IN) [L42] CALL, EXPR fp(IN) [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L42] RET, EXPR fp(IN) [L42] float x = IN - f(IN)/fp(IN); [L50] COND TRUE !(x < 0.1) VAL [IN=49] [L51] reach_error() VAL [IN=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 12 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-17 05:49:28,189 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_1_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 26fa7b1fc8948e323dc46aa278c02b07d6da75b1e07ffd01b89efc9a86bb90ce --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 05:49:29,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 05:49:29,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 05:49:29,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 05:49:29,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 05:49:29,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 05:49:29,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 05:49:29,960 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 05:49:29,962 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 05:49:29,963 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 05:49:29,964 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 05:49:29,967 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 05:49:29,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 05:49:29,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 05:49:29,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 05:49:29,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 05:49:29,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 05:49:29,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 05:49:29,977 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 05:49:29,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 05:49:29,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 05:49:29,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 05:49:29,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 05:49:29,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 05:49:29,984 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 05:49:29,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 05:49:29,988 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 05:49:29,989 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 05:49:29,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 05:49:29,990 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 05:49:29,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 05:49:29,991 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 05:49:29,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 05:49:29,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 05:49:29,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 05:49:29,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 05:49:29,993 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 05:49:29,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 05:49:29,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 05:49:29,994 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 05:49:29,995 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 05:49:29,996 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-17 05:49:30,023 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 05:49:30,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 05:49:30,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 05:49:30,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 05:49:30,025 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 05:49:30,025 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 05:49:30,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 05:49:30,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 05:49:30,026 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 05:49:30,027 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 05:49:30,027 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 05:49:30,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 05:49:30,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 05:49:30,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 05:49:30,028 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 05:49:30,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 05:49:30,028 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-17 05:49:30,028 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-17 05:49:30,028 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-17 05:49:30,029 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 05:49:30,029 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 05:49:30,029 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 05:49:30,029 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 05:49:30,037 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 05:49:30,037 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 05:49:30,038 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 05:49:30,038 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 05:49:30,038 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 05:49:30,038 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 05:49:30,038 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 05:49:30,039 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-17 05:49:30,039 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-17 05:49:30,039 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 05:49:30,039 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 05:49:30,039 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 05:49:30,039 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 05:49:30,040 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-17 05:49:30,040 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 26fa7b1fc8948e323dc46aa278c02b07d6da75b1e07ffd01b89efc9a86bb90ce [2021-12-17 05:49:30,375 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 05:49:30,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 05:49:30,402 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 05:49:30,403 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 05:49:30,405 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 05:49:30,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_1_3.i [2021-12-17 05:49:30,443 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbd978c69/0fbb97a2115d4ac0b6e567e6c73c06b3/FLAGaaa9db234 [2021-12-17 05:49:30,856 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 05:49:30,856 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_3.i [2021-12-17 05:49:30,862 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbd978c69/0fbb97a2115d4ac0b6e567e6c73c06b3/FLAGaaa9db234 [2021-12-17 05:49:30,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbd978c69/0fbb97a2115d4ac0b6e567e6c73c06b3 [2021-12-17 05:49:30,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 05:49:30,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 05:49:30,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 05:49:30,881 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 05:49:30,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 05:49:30,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:49:30" (1/1) ... [2021-12-17 05:49:30,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec1f834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:30, skipping insertion in model container [2021-12-17 05:49:30,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 05:49:30" (1/1) ... [2021-12-17 05:49:30,891 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 05:49:30,908 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 05:49:31,068 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_3.i[1722,1735] [2021-12-17 05:49:31,072 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 05:49:31,089 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 05:49:31,120 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_1_3.i[1722,1735] [2021-12-17 05:49:31,121 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 05:49:31,136 INFO L208 MainTranslator]: Completed translation [2021-12-17 05:49:31,137 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:31 WrapperNode [2021-12-17 05:49:31,137 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 05:49:31,138 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 05:49:31,138 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 05:49:31,138 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 05:49:31,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:31" (1/1) ... [2021-12-17 05:49:31,156 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:31" (1/1) ... [2021-12-17 05:49:31,179 INFO L137 Inliner]: procedures = 18, calls = 9, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 31 [2021-12-17 05:49:31,180 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 05:49:31,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 05:49:31,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 05:49:31,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 05:49:31,187 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:31" (1/1) ... [2021-12-17 05:49:31,187 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:31" (1/1) ... [2021-12-17 05:49:31,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:31" (1/1) ... [2021-12-17 05:49:31,192 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:31" (1/1) ... [2021-12-17 05:49:31,209 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:31" (1/1) ... [2021-12-17 05:49:31,210 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:31" (1/1) ... [2021-12-17 05:49:31,212 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:31" (1/1) ... [2021-12-17 05:49:31,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 05:49:31,217 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 05:49:31,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 05:49:31,218 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 05:49:31,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:31" (1/1) ... [2021-12-17 05:49:31,223 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 05:49:31,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 05:49:31,242 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 05:49:31,261 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 05:49:31,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 05:49:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-17 05:49:31,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 05:49:31,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 05:49:31,335 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 05:49:31,337 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 05:49:38,078 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 05:49:38,082 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 05:49:38,082 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 05:49:38,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:49:38 BoogieIcfgContainer [2021-12-17 05:49:38,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 05:49:38,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 05:49:38,087 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 05:49:38,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 05:49:38,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 05:49:30" (1/3) ... [2021-12-17 05:49:38,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a3af68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:49:38, skipping insertion in model container [2021-12-17 05:49:38,090 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 05:49:31" (2/3) ... [2021-12-17 05:49:38,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42a3af68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 05:49:38, skipping insertion in model container [2021-12-17 05:49:38,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 05:49:38" (3/3) ... [2021-12-17 05:49:38,092 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_1_3.i [2021-12-17 05:49:38,099 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 05:49:38,100 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 05:49:38,150 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 05:49:38,156 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 05:49:38,156 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 05:49:38,165 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:49:38,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-17 05:49:38,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:49:38,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:49:38,170 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:49:38,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:49:38,174 INFO L85 PathProgramCache]: Analyzing trace with hash 119351050, now seen corresponding path program 1 times [2021-12-17 05:49:38,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 05:49:38,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1067526224] [2021-12-17 05:49:38,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:49:38,182 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 05:49:38,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 05:49:38,184 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 05:49:38,185 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 05:49:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 05:49:39,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-17 05:49:39,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 05:49:39,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 05:49:39,169 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 05:49:39,170 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-17 05:49:39,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1067526224] [2021-12-17 05:49:39,170 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1067526224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 05:49:39,170 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 05:49:39,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-17 05:49:39,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053785496] [2021-12-17 05:49:39,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 05:49:39,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-17 05:49:39,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-17 05:49:39,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-17 05:49:39,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 05:49:39,200 INFO L87 Difference]: Start difference. First operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:49:39,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 05:49:39,209 INFO L93 Difference]: Finished difference Result 23 states and 24 transitions. [2021-12-17 05:49:39,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-17 05:49:39,210 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-17 05:49:39,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 05:49:39,215 INFO L225 Difference]: With dead ends: 23 [2021-12-17 05:49:39,215 INFO L226 Difference]: Without dead ends: 9 [2021-12-17 05:49:39,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-17 05:49:39,219 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 05:49:39,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 05:49:39,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-12-17 05:49:39,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-12-17 05:49:39,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9 states, 8 states have (on average 1.0) internal successors, (8), 8 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:49:39,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 8 transitions. [2021-12-17 05:49:39,240 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 8 transitions. Word has length 8 [2021-12-17 05:49:39,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 05:49:39,241 INFO L470 AbstractCegarLoop]: Abstraction has 9 states and 8 transitions. [2021-12-17 05:49:39,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 05:49:39,241 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 8 transitions. [2021-12-17 05:49:39,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-17 05:49:39,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 05:49:39,242 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 05:49:39,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-17 05:49:39,468 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 05:49:39,468 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 05:49:39,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 05:49:39,469 INFO L85 PathProgramCache]: Analyzing trace with hash 176609352, now seen corresponding path program 1 times [2021-12-17 05:49:39,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-17 05:49:39,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2017254786] [2021-12-17 05:49:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 05:49:39,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-17 05:49:39,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-17 05:49:39,471 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 05:49:39,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process Killed by 15