/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml --sifa.abstract.domain OctagonDomain -i ../sv-benchmarks/c/floats-cdfpl/newton_3_4.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-01 04:43:21,550 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-01 04:43:21,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-01 04:43:21,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-01 04:43:21,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-01 04:43:21,597 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-01 04:43:21,600 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-01 04:43:21,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-01 04:43:21,604 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-01 04:43:21,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-01 04:43:21,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-01 04:43:21,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-01 04:43:21,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-01 04:43:21,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-01 04:43:21,612 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-01 04:43:21,613 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-01 04:43:21,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-01 04:43:21,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-01 04:43:21,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-01 04:43:21,624 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-01 04:43:21,627 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-01 04:43:21,628 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-01 04:43:21,629 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-01 04:43:21,629 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-01 04:43:21,632 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-04-01 04:43:21,634 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-01 04:43:21,635 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-01 04:43:21,635 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-01 04:43:21,636 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-01 04:43:21,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-01 04:43:21,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-01 04:43:21,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-01 04:43:21,637 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-01 04:43:21,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-01 04:43:21,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-01 04:43:21,639 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-01 04:43:21,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2023-04-01 04:43:21,676 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-01 04:43:21,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-01 04:43:21,677 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-01 04:43:21,677 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-01 04:43:21,678 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-01 04:43:21,678 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-01 04:43:21,678 INFO L138 SettingsManager]: * User list type=DISABLED [2023-04-01 04:43:21,678 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-04-01 04:43:21,679 INFO L138 SettingsManager]: * Explicit value domain=true [2023-04-01 04:43:21,679 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-04-01 04:43:21,679 INFO L138 SettingsManager]: * Octagon Domain=false [2023-04-01 04:43:21,680 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2023-04-01 04:43:21,680 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-04-01 04:43:21,680 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-04-01 04:43:21,680 INFO L138 SettingsManager]: * Interval Domain=false [2023-04-01 04:43:21,680 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-04-01 04:43:21,680 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-04-01 04:43:21,680 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2023-04-01 04:43:21,681 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-01 04:43:21,681 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-01 04:43:21,681 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-01 04:43:21,681 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-01 04:43:21,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-01 04:43:21,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-01 04:43:21,682 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-01 04:43:21,682 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-01 04:43:21,682 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-01 04:43:21,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-01 04:43:21,683 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-01 04:43:21,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-01 04:43:21,683 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-01 04:43:21,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-01 04:43:21,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:43:21,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-01 04:43:21,683 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2023-04-01 04:43:21,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-01 04:43:21,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-01 04:43:21,684 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-04-01 04:43:21,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-01 04:43:21,684 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-01 04:43:21,684 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-04-01 04:43:21,684 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> OctagonDomain [2023-04-01 04:43:21,917 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-01 04:43:21,941 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-01 04:43:21,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-01 04:43:21,948 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-01 04:43:21,948 INFO L275 PluginConnector]: CDTParser initialized [2023-04-01 04:43:21,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2023-04-01 04:43:23,375 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-01 04:43:23,526 INFO L351 CDTParser]: Found 1 translation units. [2023-04-01 04:43:23,526 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_3_4.i [2023-04-01 04:43:23,531 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e273b7c8e/5b67eceb39e04dbc8553ccc0e9d98be0/FLAG5d9043515 [2023-04-01 04:43:23,542 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e273b7c8e/5b67eceb39e04dbc8553ccc0e9d98be0 [2023-04-01 04:43:23,544 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-01 04:43:23,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-01 04:43:23,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-01 04:43:23,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-01 04:43:23,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-01 04:43:23,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:43:23" (1/1) ... [2023-04-01 04:43:23,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18b4aadd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:43:23, skipping insertion in model container [2023-04-01 04:43:23,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.04 04:43:23" (1/1) ... [2023-04-01 04:43:23,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-01 04:43:23,568 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-01 04:43:23,692 WARN L247 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_4.i[1764,1777] [2023-04-01 04:43:23,696 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:43:23,704 INFO L203 MainTranslator]: Completed pre-run [2023-04-01 04:43:23,728 WARN L247 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_4.i[1764,1777] [2023-04-01 04:43:23,728 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-01 04:43:23,740 INFO L208 MainTranslator]: Completed translation [2023-04-01 04:43:23,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:43:23 WrapperNode [2023-04-01 04:43:23,741 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-01 04:43:23,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-01 04:43:23,742 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-01 04:43:23,742 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-01 04:43:23,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:43:23" (1/1) ... [2023-04-01 04:43:23,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:43:23" (1/1) ... [2023-04-01 04:43:23,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:43:23" (1/1) ... [2023-04-01 04:43:23,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:43:23" (1/1) ... [2023-04-01 04:43:23,763 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:43:23" (1/1) ... [2023-04-01 04:43:23,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:43:23" (1/1) ... [2023-04-01 04:43:23,765 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:43:23" (1/1) ... [2023-04-01 04:43:23,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:43:23" (1/1) ... [2023-04-01 04:43:23,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-01 04:43:23,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-01 04:43:23,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-01 04:43:23,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-01 04:43:23,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:43:23" (1/1) ... [2023-04-01 04:43:23,782 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-01 04:43:23,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-01 04:43:23,812 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) [2023-04-01 04:43:23,814 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 [2023-04-01 04:43:23,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-01 04:43:23,846 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-01 04:43:23,846 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-01 04:43:23,846 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-01 04:43:23,846 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2023-04-01 04:43:23,846 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2023-04-01 04:43:23,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-01 04:43:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-01 04:43:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-01 04:43:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2023-04-01 04:43:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2023-04-01 04:43:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-01 04:43:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-01 04:43:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-01 04:43:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_float [2023-04-01 04:43:23,847 INFO L130 BoogieDeclarations]: Found specification of procedure f [2023-04-01 04:43:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2023-04-01 04:43:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-01 04:43:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-01 04:43:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-01 04:43:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-01 04:43:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-01 04:43:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-01 04:43:23,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-01 04:43:23,910 INFO L236 CfgBuilder]: Building ICFG [2023-04-01 04:43:23,912 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-01 04:43:24,044 INFO L277 CfgBuilder]: Performing block encoding [2023-04-01 04:43:24,066 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-01 04:43:24,067 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-01 04:43:24,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:43:24 BoogieIcfgContainer [2023-04-01 04:43:24,069 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-01 04:43:24,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-01 04:43:24,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-01 04:43:24,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-01 04:43:24,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.04 04:43:23" (1/3) ... [2023-04-01 04:43:24,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432cf3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:43:24, skipping insertion in model container [2023-04-01 04:43:24,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.04 04:43:23" (2/3) ... [2023-04-01 04:43:24,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@432cf3cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.04 04:43:24, skipping insertion in model container [2023-04-01 04:43:24,077 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.04 04:43:24" (3/3) ... [2023-04-01 04:43:24,078 INFO L112 eAbstractionObserver]: Analyzing ICFG newton_3_4.i [2023-04-01 04:43:24,094 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-01 04:43:24,094 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-01 04:43:24,136 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-01 04:43:24,142 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=FINITE_AUTOMATA, 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=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@101c6769, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-04-01 04:43:24,143 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-01 04:43:24,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 9 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-04-01 04:43:24,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2023-04-01 04:43:24,154 INFO L187 NwaCegarLoop]: Found error trace [2023-04-01 04:43:24,154 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-01 04:43:24,155 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-01 04:43:24,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-01 04:43:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash 982449581, now seen corresponding path program 1 times [2023-04-01 04:43:24,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-04-01 04:43:24,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359622230] [2023-04-01 04:43:24,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-01 04:43:24,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-01 04:43:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 04:43:24,344 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-04-01 04:43:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-04-01 04:43:24,384 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-04-01 04:43:24,387 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-04-01 04:43:24,388 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-04-01 04:43:24,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-01 04:43:24,393 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-04-01 04:43:24,397 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-04-01 04:43:24,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.04 04:43:24 BoogieIcfgContainer [2023-04-01 04:43:24,416 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-04-01 04:43:24,417 INFO L158 Benchmark]: Toolchain (without parser) took 871.68ms. Allocated memory is still 269.5MB. Free memory was 224.7MB in the beginning and 185.2MB in the end (delta: 39.5MB). Peak memory consumption was 38.8MB. Max. memory is 8.0GB. [2023-04-01 04:43:24,417 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 180.4MB. Free memory was 132.6MB in the beginning and 132.4MB in the end (delta: 123.2kB). There was no memory consumed. Max. memory is 8.0GB. [2023-04-01 04:43:24,418 INFO L158 Benchmark]: CACSL2BoogieTranslator took 194.78ms. Allocated memory is still 269.5MB. Free memory was 224.3MB in the beginning and 213.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2023-04-01 04:43:24,418 INFO L158 Benchmark]: Boogie Preprocessor took 25.87ms. Allocated memory is still 269.5MB. Free memory was 213.8MB in the beginning and 212.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2023-04-01 04:43:24,419 INFO L158 Benchmark]: RCFGBuilder took 300.82ms. Allocated memory is still 269.5MB. Free memory was 212.1MB in the beginning and 200.6MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2023-04-01 04:43:24,419 INFO L158 Benchmark]: TraceAbstraction took 345.23ms. Allocated memory is still 269.5MB. Free memory was 200.2MB in the beginning and 185.2MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2023-04-01 04:43:24,437 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 180.4MB. Free memory was 132.6MB in the beginning and 132.4MB in the end (delta: 123.2kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 194.78ms. Allocated memory is still 269.5MB. Free memory was 224.3MB in the beginning and 213.8MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 25.87ms. Allocated memory is still 269.5MB. Free memory was 213.8MB in the beginning and 212.5MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 300.82ms. Allocated memory is still 269.5MB. Free memory was 212.1MB in the beginning and 200.6MB in the end (delta: 11.6MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 345.23ms. Allocated memory is still 269.5MB. Free memory was 200.2MB in the beginning and 185.2MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * 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 > -0.8f && IN < 0.8f) VAL [\old(cond)=1] [L24] COND FALSE !(!cond) [L40] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) VAL [IN=59] [L42] CALL, EXPR f(IN) VAL [\old(x)=59] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L42] RET, EXPR f(IN) VAL [IN=59, f(IN)=56] [L42] CALL, EXPR fp(IN) VAL [\old(x)=59] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L42] RET, EXPR fp(IN) VAL [IN=59, f(IN)=56, fp(IN)=55] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=62] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L44] RET, EXPR f(x) VAL [IN=59, f(x)=63, x=62] [L44] CALL, EXPR fp(x) VAL [\old(x)=62] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L44] RET, EXPR fp(x) VAL [IN=59, f(x)=63, fp(x)=60, x=62] [L44] x = x - f(x)/fp(x) [L46] CALL, EXPR f(x) VAL [\old(x)=61] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; [L46] RET, EXPR f(x) VAL [IN=59, f(x)=57, x=61] [L46] CALL, EXPR fp(x) VAL [\old(x)=61] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; [L46] RET, EXPR fp(x) VAL [IN=59, f(x)=57, fp(x)=58, x=61] [L46] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=59] [L51] reach_error() VAL [IN=59] - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 [2023-04-01 04:43:24,462 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...