./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_3_2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_3_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:12:52,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:12:52,421 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:12:52,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:12:52,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:12:52,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:12:52,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:12:52,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:12:52,457 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:12:52,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:12:52,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:12:52,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:12:52,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:12:52,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:12:52,464 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:12:52,465 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:12:52,466 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:12:52,466 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:12:52,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:12:52,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:12:52,474 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:12:52,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:12:52,478 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:12:52,480 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:12:52,481 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:12:52,483 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:12:52,485 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:12:52,486 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:12:52,487 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:12:52,487 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:12:52,488 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:12:52,488 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:12:52,489 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:12:52,490 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:12:52,491 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:12:52,491 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:12:52,492 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:12:52,492 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:12:52,492 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:12:52,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:12:52,493 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:12:52,494 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:12:52,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 02:12:52,514 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:12:52,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:12:52,515 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:12:52,515 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:12:52,516 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:12:52,516 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:12:52,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:12:52,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:12:52,517 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:12:52,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:12:52,518 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:12:52,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 02:12:52,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:12:52,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:12:52,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:12:52,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:12:52,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:12:52,519 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:12:52,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:12:52,520 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:12:52,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:12:52,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:12:52,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:12:52,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:12:52,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:12:52,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:12:52,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:12:52,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:12:52,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 02:12:52,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 02:12:52,522 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:12:52,522 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:12:52,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:12:52,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 [2022-07-12 02:12:52,731 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:12:52,753 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:12:52,755 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:12:52,756 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:12:52,757 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:12:52,758 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2022-07-12 02:12:52,813 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2538ce3/e7e28992b51b4064a762fe0da70a3944/FLAG838355ae8 [2022-07-12 02:12:53,127 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:12:53,128 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2022-07-12 02:12:53,136 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2538ce3/e7e28992b51b4064a762fe0da70a3944/FLAG838355ae8 [2022-07-12 02:12:53,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e2538ce3/e7e28992b51b4064a762fe0da70a3944 [2022-07-12 02:12:53,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:12:53,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:12:53,560 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:12:53,560 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:12:53,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:12:53,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:12:53" (1/1) ... [2022-07-12 02:12:53,564 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb47021 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:53, skipping insertion in model container [2022-07-12 02:12:53,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:12:53" (1/1) ... [2022-07-12 02:12:53,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:12:53,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:12:53,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_2.i[1764,1777] [2022-07-12 02:12:53,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:12:53,703 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:12:53,731 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_2.i[1764,1777] [2022-07-12 02:12:53,735 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:12:53,745 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:12:53,746 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:53 WrapperNode [2022-07-12 02:12:53,747 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:12:53,748 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:12:53,748 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:12:53,748 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:12:53,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:53" (1/1) ... [2022-07-12 02:12:53,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:53" (1/1) ... [2022-07-12 02:12:53,777 INFO L137 Inliner]: procedures = 17, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 34 [2022-07-12 02:12:53,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:12:53,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:12:53,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:12:53,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:12:53,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:53" (1/1) ... [2022-07-12 02:12:53,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:53" (1/1) ... [2022-07-12 02:12:53,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:53" (1/1) ... [2022-07-12 02:12:53,796 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:53" (1/1) ... [2022-07-12 02:12:53,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:53" (1/1) ... [2022-07-12 02:12:53,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:53" (1/1) ... [2022-07-12 02:12:53,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:53" (1/1) ... [2022-07-12 02:12:53,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:12:53,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:12:53,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:12:53,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:12:53,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:53" (1/1) ... [2022-07-12 02:12:53,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:12:53,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:12:53,855 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) [2022-07-12 02:12:53,862 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 [2022-07-12 02:12:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:12:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-12 02:12:53,885 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-12 02:12:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-12 02:12:53,885 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-12 02:12:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 02:12:53,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:12:53,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:12:53,938 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:12:53,940 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:12:54,064 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:12:54,068 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:12:54,068 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:12:54,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:12:54 BoogieIcfgContainer [2022-07-12 02:12:54,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:12:54,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:12:54,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:12:54,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:12:54,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:12:53" (1/3) ... [2022-07-12 02:12:54,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d83f276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:12:54, skipping insertion in model container [2022-07-12 02:12:54,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:53" (2/3) ... [2022-07-12 02:12:54,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d83f276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:12:54, skipping insertion in model container [2022-07-12 02:12:54,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:12:54" (3/3) ... [2022-07-12 02:12:54,079 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_2.i [2022-07-12 02:12:54,088 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:12:54,089 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:12:54,155 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:12:54,162 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@2932db95, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5b58a33b [2022-07-12 02:12:54,163 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:12:54,166 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) [2022-07-12 02:12:54,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 02:12:54,174 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:12:54,176 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] [2022-07-12 02:12:54,176 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:12:54,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:12:54,182 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2022-07-12 02:12:54,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:12:54,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754103937] [2022-07-12 02:12:54,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:12:54,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:12:54,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:12:54,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 02:12:54,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:12:54,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 02:12:54,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:12:54,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 02:12:54,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:12:54,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 02:12:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:12:54,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 02:12:54,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:12:54,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 02:12:54,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:12:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 02:12:54,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 02:12:54,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754103937] [2022-07-12 02:12:54,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1754103937] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:12:54,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:12:54,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 02:12:54,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616746417] [2022-07-12 02:12:54,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:12:54,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 02:12:54,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 02:12:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 02:12:54,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:12:54,399 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) [2022-07-12 02:12:54,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:12:54,414 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-07-12 02:12:54,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 02:12:54,416 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 [2022-07-12 02:12:54,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:12:54,421 INFO L225 Difference]: With dead ends: 49 [2022-07-12 02:12:54,421 INFO L226 Difference]: Without dead ends: 22 [2022-07-12 02:12:54,424 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 [2022-07-12 02:12:54,428 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 [2022-07-12 02:12:54,429 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] [2022-07-12 02:12:54,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-12 02:12:54,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-12 02:12:54,452 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) [2022-07-12 02:12:54,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-12 02:12:54,454 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2022-07-12 02:12:54,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:12:54,455 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-12 02:12:54,456 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) [2022-07-12 02:12:54,456 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-12 02:12:54,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 02:12:54,458 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:12:54,458 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] [2022-07-12 02:12:54,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 02:12:54,459 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:12:54,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:12:54,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2022-07-12 02:12:54,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:12:54,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300640765] [2022-07-12 02:12:54,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:12:54,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:12:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:12:54,487 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 02:12:54,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:12:54,519 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 02:12:54,519 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 02:12:54,521 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 02:12:54,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 02:12:54,528 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 02:12:54,530 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 02:12:54,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 02:12:54 BoogieIcfgContainer [2022-07-12 02:12:54,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 02:12:54,549 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 02:12:54,550 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 02:12:54,550 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 02:12:54,550 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:12:54" (3/4) ... [2022-07-12 02:12:54,552 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 02:12:54,552 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 02:12:54,552 INFO L158 Benchmark]: Toolchain (without parser) took 994.47ms. Allocated memory is still 102.8MB. Free memory was 71.4MB in the beginning and 55.8MB in the end (delta: 15.7MB). Peak memory consumption was 17.6MB. Max. memory is 16.1GB. [2022-07-12 02:12:54,553 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 77.6MB. Free memory was 42.7MB in the beginning and 42.6MB in the end (delta: 75.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:12:54,553 INFO L158 Benchmark]: CACSL2BoogieTranslator took 187.09ms. Allocated memory is still 102.8MB. Free memory was 71.3MB in the beginning and 61.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-12 02:12:54,553 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.07ms. Allocated memory is still 102.8MB. Free memory was 61.2MB in the beginning and 59.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:12:54,554 INFO L158 Benchmark]: Boogie Preprocessor took 40.36ms. Allocated memory is still 102.8MB. Free memory was 59.8MB in the beginning and 58.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:12:54,554 INFO L158 Benchmark]: RCFGBuilder took 249.64ms. Allocated memory is still 102.8MB. Free memory was 58.7MB in the beginning and 49.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:12:54,555 INFO L158 Benchmark]: TraceAbstraction took 477.83ms. Allocated memory is still 102.8MB. Free memory was 49.0MB in the beginning and 56.1MB in the end (delta: -7.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:12:54,555 INFO L158 Benchmark]: Witness Printer took 2.42ms. Allocated memory is still 102.8MB. Free memory was 56.1MB in the beginning and 55.8MB in the end (delta: 323.5kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:12:54,557 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 77.6MB. Free memory was 42.7MB in the beginning and 42.6MB in the end (delta: 75.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 187.09ms. Allocated memory is still 102.8MB. Free memory was 71.3MB in the beginning and 61.3MB in the end (delta: 10.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 30.07ms. Allocated memory is still 102.8MB. Free memory was 61.2MB in the beginning and 59.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 40.36ms. Allocated memory is still 102.8MB. Free memory was 59.8MB in the beginning and 58.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 249.64ms. Allocated memory is still 102.8MB. Free memory was 58.7MB in the beginning and 49.5MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 477.83ms. Allocated memory is still 102.8MB. Free memory was 49.0MB in the beginning and 56.1MB in the end (delta: -7.0MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 2.42ms. Allocated memory is still 102.8MB. Free memory was 56.1MB in the beginning and 55.8MB in the end (delta: 323.5kB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 46. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -0.4f && IN < 0.4f) [L42] CALL, EXPR f(IN) VAL [\old(x)=50] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=50, x=50] [L42] RET, EXPR f(IN) VAL [f(IN)=51, IN=50] [L42] CALL, EXPR fp(IN) VAL [\old(x)=50] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=50, x=50] [L42] RET, EXPR fp(IN) VAL [f(IN)=51, fp(IN)=55, IN=50] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=52] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=52, x=52] [L44] RET, EXPR f(x) VAL [f(x)=53, IN=50, x=52] [L44] CALL, EXPR fp(x) VAL [\old(x)=52] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=52, x=52] [L44] RET, EXPR fp(x) VAL [f(x)=53, fp(x)=56, IN=50, x=52] [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) VAL [\old(x)=54] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=54, x=54] [L46] RET, EXPR f(x) VAL [f(x)=57, IN=50, x=54] [L46] CALL, EXPR fp(x) VAL [\old(x)=54] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=54, x=54] [L46] RET, EXPR fp(x) VAL [f(x)=57, fp(x)=49, IN=50, x=54] [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=50] [L51] reach_error() VAL [IN=50] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 29 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 29 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 32 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 18/18 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-12 02:12:54,594 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_2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:12:56,315 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:12:56,317 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:12:56,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:12:56,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:12:56,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:12:56,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:12:56,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:12:56,361 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:12:56,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:12:56,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:12:56,367 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:12:56,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:12:56,369 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:12:56,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:12:56,373 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:12:56,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:12:56,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:12:56,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:12:56,379 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:12:56,381 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:12:56,383 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:12:56,384 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:12:56,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:12:56,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:12:56,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:12:56,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:12:56,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:12:56,390 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:12:56,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:12:56,391 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:12:56,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:12:56,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:12:56,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:12:56,394 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:12:56,394 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:12:56,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:12:56,395 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:12:56,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:12:56,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:12:56,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:12:56,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:12:56,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 02:12:56,421 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:12:56,422 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:12:56,422 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:12:56,422 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:12:56,423 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:12:56,423 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:12:56,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:12:56,424 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:12:56,424 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:12:56,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:12:56,425 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:12:56,425 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:12:56,425 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:12:56,425 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:12:56,425 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:12:56,425 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:12:56,426 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 02:12:56,426 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 02:12:56,426 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 02:12:56,426 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:12:56,426 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:12:56,426 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:12:56,426 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:12:56,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:12:56,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:12:56,427 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:12:56,427 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:12:56,427 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:12:56,427 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:12:56,427 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:12:56,428 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 02:12:56,428 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 02:12:56,428 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:12:56,428 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:12:56,428 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:12:56,429 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 02:12:56,429 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c1d4d49264539a089c5128bd7fc98307efecaf11cb51350b8359b7fe239beab3 [2022-07-12 02:12:56,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:12:56,702 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:12:56,704 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:12:56,705 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:12:56,706 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:12:56,707 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2022-07-12 02:12:56,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce88e4a0/890259402196447c97782e03f5f7a43f/FLAG2f11d45f0 [2022-07-12 02:12:57,162 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:12:57,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_2.i [2022-07-12 02:12:57,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce88e4a0/890259402196447c97782e03f5f7a43f/FLAG2f11d45f0 [2022-07-12 02:12:57,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ce88e4a0/890259402196447c97782e03f5f7a43f [2022-07-12 02:12:57,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:12:57,187 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:12:57,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:12:57,189 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:12:57,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:12:57,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:12:57" (1/1) ... [2022-07-12 02:12:57,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44380a9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:57, skipping insertion in model container [2022-07-12 02:12:57,195 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:12:57" (1/1) ... [2022-07-12 02:12:57,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:12:57,215 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:12:57,361 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_2.i[1764,1777] [2022-07-12 02:12:57,364 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:12:57,378 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:12:57,435 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_2.i[1764,1777] [2022-07-12 02:12:57,436 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:12:57,445 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:12:57,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:57 WrapperNode [2022-07-12 02:12:57,445 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:12:57,446 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:12:57,446 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:12:57,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:12:57,451 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:57" (1/1) ... [2022-07-12 02:12:57,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:57" (1/1) ... [2022-07-12 02:12:57,479 INFO L137 Inliner]: procedures = 18, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2022-07-12 02:12:57,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:12:57,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:12:57,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:12:57,480 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:12:57,486 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:57" (1/1) ... [2022-07-12 02:12:57,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:57" (1/1) ... [2022-07-12 02:12:57,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:57" (1/1) ... [2022-07-12 02:12:57,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:57" (1/1) ... [2022-07-12 02:12:57,512 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:57" (1/1) ... [2022-07-12 02:12:57,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:57" (1/1) ... [2022-07-12 02:12:57,516 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:57" (1/1) ... [2022-07-12 02:12:57,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:12:57,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:12:57,520 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:12:57,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:12:57,521 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:57" (1/1) ... [2022-07-12 02:12:57,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:12:57,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:12:57,541 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) [2022-07-12 02:12:57,550 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 [2022-07-12 02:12:57,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:12:57,587 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-12 02:12:57,587 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-12 02:12:57,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 02:12:57,587 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-12 02:12:57,588 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-12 02:12:57,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:12:57,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:12:57,642 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:12:57,643 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:13:06,937 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:13:06,941 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:13:06,942 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:13:06,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:13:06 BoogieIcfgContainer [2022-07-12 02:13:06,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:13:06,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:13:06,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:13:06,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:13:06,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:12:57" (1/3) ... [2022-07-12 02:13:06,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ea3ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:13:06, skipping insertion in model container [2022-07-12 02:13:06,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:57" (2/3) ... [2022-07-12 02:13:06,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ea3ca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:13:06, skipping insertion in model container [2022-07-12 02:13:06,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:13:06" (3/3) ... [2022-07-12 02:13:06,949 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_3_2.i [2022-07-12 02:13:06,959 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:13:06,959 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:13:07,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:13:07,014 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@32742cb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@61b9421a [2022-07-12 02:13:07,015 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:13:07,018 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) [2022-07-12 02:13:07,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 02:13:07,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:13:07,028 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] [2022-07-12 02:13:07,028 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:13:07,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:13:07,035 INFO L85 PathProgramCache]: Analyzing trace with hash 694828395, now seen corresponding path program 1 times [2022-07-12 02:13:07,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:13:07,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381696172] [2022-07-12 02:13:07,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:13:07,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:13:07,046 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:13:07,048 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) [2022-07-12 02:13:07,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 02:13:09,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:13:09,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 02:13:09,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:13:09,769 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 02:13:09,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:13:09,770 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:13:09,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381696172] [2022-07-12 02:13:09,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381696172] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:13:09,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:13:09,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 02:13:09,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449511097] [2022-07-12 02:13:09,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:13:09,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 02:13:09,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:13:09,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 02:13:09,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:13:09,798 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) [2022-07-12 02:13:09,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:13:09,811 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2022-07-12 02:13:09,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 02:13:09,813 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 [2022-07-12 02:13:09,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:13:09,818 INFO L225 Difference]: With dead ends: 49 [2022-07-12 02:13:09,818 INFO L226 Difference]: Without dead ends: 22 [2022-07-12 02:13:09,820 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 [2022-07-12 02:13:09,822 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 [2022-07-12 02:13:09,823 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] [2022-07-12 02:13:09,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-12 02:13:09,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-12 02:13:09,845 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) [2022-07-12 02:13:09,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2022-07-12 02:13:09,847 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 33 [2022-07-12 02:13:09,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:13:09,847 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2022-07-12 02:13:09,847 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) [2022-07-12 02:13:09,848 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2022-07-12 02:13:09,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-07-12 02:13:09,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:13:09,849 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] [2022-07-12 02:13:09,929 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-12 02:13:10,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 02:13:10,064 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:13:10,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:13:10,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1396428269, now seen corresponding path program 1 times [2022-07-12 02:13:10,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:13:10,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1985265707] [2022-07-12 02:13:10,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:13:10,066 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:13:10,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:13:10,067 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) [2022-07-12 02:13:10,069 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process