./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_5.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_2_5.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 799e2ca02ed318ae0a435976e98168672daf7c64e071ba008e9464d075c9d350 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:12:36,967 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:12:36,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:12:36,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:12:36,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:12:36,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:12:36,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:12:36,997 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:12:36,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:12:37,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:12:37,001 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:12:37,003 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:12:37,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:12:37,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:12:37,007 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:12:37,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:12:37,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:12:37,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:12:37,012 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:12:37,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:12:37,016 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:12:37,018 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:12:37,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:12:37,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:12:37,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:12:37,022 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:12:37,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:12:37,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:12:37,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:12:37,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:12:37,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:12:37,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:12:37,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:12:37,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:12:37,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:12:37,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:12:37,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:12:37,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:12:37,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:12:37,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:12:37,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:12:37,030 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:12:37,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 02:12:37,047 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:12:37,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:12:37,048 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:12:37,048 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:12:37,049 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:12:37,049 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:12:37,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:12:37,049 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:12:37,049 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:12:37,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:12:37,050 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:12:37,050 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 02:12:37,050 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:12:37,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:12:37,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:12:37,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:12:37,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:12:37,051 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:12:37,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:12:37,052 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:12:37,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:12:37,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:12:37,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:12:37,053 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:12:37,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:12:37,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:12:37,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:12:37,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:12:37,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 02:12:37,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 02:12:37,054 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:12:37,054 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:12:37,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:12:37,054 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 799e2ca02ed318ae0a435976e98168672daf7c64e071ba008e9464d075c9d350 [2022-07-12 02:12:37,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:12:37,274 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:12:37,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:12:37,276 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:12:37,277 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:12:37,278 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2022-07-12 02:12:37,343 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f7d2080/9fb001172776416394fcb46fad58d892/FLAG358fc1c35 [2022-07-12 02:12:37,750 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:12:37,754 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2022-07-12 02:12:37,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f7d2080/9fb001172776416394fcb46fad58d892/FLAG358fc1c35 [2022-07-12 02:12:37,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93f7d2080/9fb001172776416394fcb46fad58d892 [2022-07-12 02:12:37,776 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:12:37,777 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:12:37,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:12:37,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:12:37,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:12:37,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:12:37" (1/1) ... [2022-07-12 02:12:37,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d479701 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:37, skipping insertion in model container [2022-07-12 02:12:37,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:12:37" (1/1) ... [2022-07-12 02:12:37,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:12:37,805 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:12:37,927 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1743,1756] [2022-07-12 02:12:37,929 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:12:37,934 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:12:37,945 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1743,1756] [2022-07-12 02:12:37,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:12:37,956 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:12:37,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:37 WrapperNode [2022-07-12 02:12:37,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:12:37,957 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:12:37,957 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:12:37,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:12:37,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:37" (1/1) ... [2022-07-12 02:12:37,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:37" (1/1) ... [2022-07-12 02:12:37,983 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2022-07-12 02:12:37,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:12:37,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:12:37,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:12:37,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:12:37,989 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:37" (1/1) ... [2022-07-12 02:12:37,989 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:37" (1/1) ... [2022-07-12 02:12:37,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:37" (1/1) ... [2022-07-12 02:12:37,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:37" (1/1) ... [2022-07-12 02:12:37,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:37" (1/1) ... [2022-07-12 02:12:37,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:37" (1/1) ... [2022-07-12 02:12:37,995 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:37" (1/1) ... [2022-07-12 02:12:37,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:12:37,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:12:37,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:12:37,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:12:37,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:37" (1/1) ... [2022-07-12 02:12:38,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:12:38,012 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:12:38,030 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 02:12:38,032 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 02:12:38,055 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:12:38,055 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-12 02:12:38,055 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-12 02:12:38,055 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-12 02:12:38,055 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-12 02:12:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 02:12:38,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:12:38,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:12:38,099 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:12:38,101 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:12:38,211 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:12:38,215 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:12:38,217 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:12:38,218 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:12:38 BoogieIcfgContainer [2022-07-12 02:12:38,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:12:38,219 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:12:38,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:12:38,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:12:38,223 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:12:37" (1/3) ... [2022-07-12 02:12:38,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4905ceb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:12:38, skipping insertion in model container [2022-07-12 02:12:38,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:37" (2/3) ... [2022-07-12 02:12:38,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4905ceb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:12:38, skipping insertion in model container [2022-07-12 02:12:38,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:12:38" (3/3) ... [2022-07-12 02:12:38,225 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_5.i [2022-07-12 02:12:38,236 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:12:38,236 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:12:38,287 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:12:38,296 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@7127be4e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@24af2376 [2022-07-12 02:12:38,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:12:38,300 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 02:12:38,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-12 02:12:38,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:12:38,318 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:12:38,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:12:38,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:12:38,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2022-07-12 02:12:38,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:12:38,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637366121] [2022-07-12 02:12:38,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:12:38,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:12:38,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:12:38,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-12 02:12:38,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:12:38,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 02:12:38,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:12:38,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 02:12:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:12:38,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 02:12:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:12:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 02:12:38,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 02:12:38,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637366121] [2022-07-12 02:12:38,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637366121] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:12:38,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:12:38,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 02:12:38,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120710472] [2022-07-12 02:12:38,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:12:38,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 02:12:38,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 02:12:38,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 02:12:38,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:12:38,518 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 02:12:38,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:12:38,532 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-07-12 02:12:38,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 02:12:38,534 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2022-07-12 02:12:38,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:12:38,539 INFO L225 Difference]: With dead ends: 43 [2022-07-12 02:12:38,539 INFO L226 Difference]: Without dead ends: 19 [2022-07-12 02:12:38,541 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:12:38,545 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 02:12:38,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 02:12:38,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-12 02:12:38,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-12 02:12:38,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 02:12:38,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-07-12 02:12:38,580 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2022-07-12 02:12:38,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:12:38,580 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-07-12 02:12:38,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 02:12:38,581 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-07-12 02:12:38,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-12 02:12:38,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:12:38,584 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:12:38,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 02:12:38,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:12:38,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:12:38,585 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2022-07-12 02:12:38,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 02:12:38,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723745753] [2022-07-12 02:12:38,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:12:38,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 02:12:38,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:12:38,616 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 02:12:38,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 02:12:38,656 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-12 02:12:38,657 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 02:12:38,659 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-12 02:12:38,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 02:12:38,664 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-12 02:12:38,667 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 02:12:38,689 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 02:12:38 BoogieIcfgContainer [2022-07-12 02:12:38,689 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 02:12:38,690 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 02:12:38,690 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 02:12:38,690 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 02:12:38,691 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:12:38" (3/4) ... [2022-07-12 02:12:38,693 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-12 02:12:38,699 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 02:12:38,700 INFO L158 Benchmark]: Toolchain (without parser) took 922.43ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 79.8MB in the beginning and 69.9MB in the end (delta: 9.9MB). Peak memory consumption was 38.1MB. Max. memory is 16.1GB. [2022-07-12 02:12:38,701 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory is still 59.7MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 02:12:38,702 INFO L158 Benchmark]: CACSL2BoogieTranslator took 177.41ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 79.8MB in the beginning and 108.1MB in the end (delta: -28.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:12:38,704 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.95ms. Allocated memory is still 132.1MB. Free memory was 108.1MB in the beginning and 106.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:12:38,705 INFO L158 Benchmark]: Boogie Preprocessor took 12.89ms. Allocated memory is still 132.1MB. Free memory was 106.5MB in the beginning and 105.6MB in the end (delta: 902.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:12:38,706 INFO L158 Benchmark]: RCFGBuilder took 221.16ms. Allocated memory is still 132.1MB. Free memory was 105.6MB in the beginning and 96.3MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 02:12:38,708 INFO L158 Benchmark]: TraceAbstraction took 469.92ms. Allocated memory is still 132.1MB. Free memory was 95.9MB in the beginning and 70.4MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-07-12 02:12:38,709 INFO L158 Benchmark]: Witness Printer took 9.37ms. Allocated memory is still 132.1MB. Free memory was 70.4MB in the beginning and 69.9MB in the end (delta: 458.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 02:12:38,711 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 102.8MB. Free memory is still 59.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 177.41ms. Allocated memory was 102.8MB in the beginning and 132.1MB in the end (delta: 29.4MB). Free memory was 79.8MB in the beginning and 108.1MB in the end (delta: -28.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 25.95ms. Allocated memory is still 132.1MB. Free memory was 108.1MB in the beginning and 106.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 12.89ms. Allocated memory is still 132.1MB. Free memory was 106.5MB in the beginning and 105.6MB in the end (delta: 902.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 221.16ms. Allocated memory is still 132.1MB. Free memory was 105.6MB in the beginning and 96.3MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 469.92ms. Allocated memory is still 132.1MB. Free memory was 95.9MB in the beginning and 70.4MB in the end (delta: 25.6MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 9.37ms. Allocated memory is still 132.1MB. Free memory was 70.4MB in the beginning and 69.9MB in the end (delta: 458.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L42] CALL, EXPR f(IN) VAL [\old(x)=49] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L42] RET, EXPR f(IN) VAL [f(IN)=50, IN=49] [L42] CALL, EXPR fp(IN) VAL [\old(x)=49] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L42] RET, EXPR fp(IN) VAL [f(IN)=50, fp(IN)=53, IN=49] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=51] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=51, x=51] [L44] RET, EXPR f(x) VAL [f(x)=52, IN=49, x=51] [L44] CALL, EXPR fp(x) VAL [\old(x)=51] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=51, x=51] [L44] RET, EXPR fp(x) VAL [f(x)=52, fp(x)=54, IN=49, x=51] [L44] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=49] [L51] reach_error() VAL [IN=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 24 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-12 02:12:38,755 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_2_5.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 799e2ca02ed318ae0a435976e98168672daf7c64e071ba008e9464d075c9d350 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 02:12:40,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 02:12:40,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 02:12:40,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 02:12:40,577 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 02:12:40,578 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 02:12:40,582 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 02:12:40,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 02:12:40,586 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 02:12:40,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 02:12:40,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 02:12:40,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 02:12:40,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 02:12:40,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 02:12:40,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 02:12:40,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 02:12:40,600 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 02:12:40,602 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 02:12:40,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 02:12:40,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 02:12:40,610 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 02:12:40,610 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 02:12:40,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 02:12:40,613 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 02:12:40,614 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 02:12:40,617 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 02:12:40,618 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 02:12:40,618 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 02:12:40,619 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 02:12:40,619 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 02:12:40,620 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 02:12:40,620 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 02:12:40,621 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 02:12:40,622 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 02:12:40,623 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 02:12:40,623 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 02:12:40,623 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 02:12:40,624 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 02:12:40,624 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 02:12:40,624 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 02:12:40,625 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 02:12:40,626 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 02:12:40,627 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-12 02:12:40,654 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 02:12:40,655 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 02:12:40,655 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 02:12:40,655 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 02:12:40,656 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 02:12:40,656 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 02:12:40,656 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 02:12:40,656 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 02:12:40,657 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 02:12:40,657 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 02:12:40,657 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 02:12:40,658 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 02:12:40,658 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 02:12:40,658 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 02:12:40,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 02:12:40,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 02:12:40,658 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 02:12:40,658 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 02:12:40,659 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 02:12:40,659 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 02:12:40,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 02:12:40,659 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 02:12:40,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 02:12:40,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 02:12:40,660 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 02:12:40,660 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 02:12:40,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:12:40,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 02:12:40,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 02:12:40,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 02:12:40,661 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 02:12:40,661 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 02:12:40,661 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 02:12:40,661 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 02:12:40,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 02:12:40,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 02:12:40,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 799e2ca02ed318ae0a435976e98168672daf7c64e071ba008e9464d075c9d350 [2022-07-12 02:12:40,923 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 02:12:40,942 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 02:12:40,946 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 02:12:40,947 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 02:12:40,948 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 02:12:40,949 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2022-07-12 02:12:41,018 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6522be37c/253ed8acb3bf495587259ebf1cb95383/FLAG9449bceb1 [2022-07-12 02:12:41,408 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 02:12:41,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2022-07-12 02:12:41,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6522be37c/253ed8acb3bf495587259ebf1cb95383/FLAG9449bceb1 [2022-07-12 02:12:41,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6522be37c/253ed8acb3bf495587259ebf1cb95383 [2022-07-12 02:12:41,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 02:12:41,432 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 02:12:41,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 02:12:41,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 02:12:41,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 02:12:41,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:12:41" (1/1) ... [2022-07-12 02:12:41,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a9f07f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:41, skipping insertion in model container [2022-07-12 02:12:41,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 02:12:41" (1/1) ... [2022-07-12 02:12:41,444 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 02:12:41,458 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 02:12:41,607 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1743,1756] [2022-07-12 02:12:41,609 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:12:41,633 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 02:12:41,667 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1743,1756] [2022-07-12 02:12:41,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 02:12:41,679 INFO L208 MainTranslator]: Completed translation [2022-07-12 02:12:41,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:41 WrapperNode [2022-07-12 02:12:41,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 02:12:41,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 02:12:41,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 02:12:41,680 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 02:12:41,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:41" (1/1) ... [2022-07-12 02:12:41,706 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:41" (1/1) ... [2022-07-12 02:12:41,717 INFO L137 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2022-07-12 02:12:41,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 02:12:41,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 02:12:41,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 02:12:41,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 02:12:41,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:41" (1/1) ... [2022-07-12 02:12:41,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:41" (1/1) ... [2022-07-12 02:12:41,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:41" (1/1) ... [2022-07-12 02:12:41,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:41" (1/1) ... [2022-07-12 02:12:41,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:41" (1/1) ... [2022-07-12 02:12:41,735 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:41" (1/1) ... [2022-07-12 02:12:41,736 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:41" (1/1) ... [2022-07-12 02:12:41,738 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 02:12:41,739 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 02:12:41,739 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 02:12:41,739 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 02:12:41,739 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:41" (1/1) ... [2022-07-12 02:12:41,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 02:12:41,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 02:12:41,781 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 02:12:41,784 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 02:12:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 02:12:41,811 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-12 02:12:41,812 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-12 02:12:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-12 02:12:41,812 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-12 02:12:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-12 02:12:41,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 02:12:41,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 02:12:41,889 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 02:12:41,891 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 02:12:50,824 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 02:12:50,828 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 02:12:50,829 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 02:12:50,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:12:50 BoogieIcfgContainer [2022-07-12 02:12:50,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 02:12:50,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 02:12:50,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 02:12:50,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 02:12:50,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 02:12:41" (1/3) ... [2022-07-12 02:12:50,834 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a647aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:12:50, skipping insertion in model container [2022-07-12 02:12:50,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 02:12:41" (2/3) ... [2022-07-12 02:12:50,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a647aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 02:12:50, skipping insertion in model container [2022-07-12 02:12:50,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 02:12:50" (3/3) ... [2022-07-12 02:12:50,837 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_5.i [2022-07-12 02:12:50,847 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 02:12:50,848 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 02:12:50,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 02:12:50,930 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@44838850, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e260f56 [2022-07-12 02:12:50,931 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 02:12:50,935 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 02:12:50,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-12 02:12:50,941 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:12:50,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:12:50,942 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:12:50,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:12:50,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2022-07-12 02:12:50,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:12:50,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [655977678] [2022-07-12 02:12:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:12:50,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:12:50,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:12:50,964 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 02:12:50,979 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 02:12:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 02:12:53,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 02:12:53,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 02:12:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 02:12:53,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 02:12:53,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 02:12:53,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [655977678] [2022-07-12 02:12:53,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [655977678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 02:12:53,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 02:12:53,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 02:12:53,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738799131] [2022-07-12 02:12:53,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 02:12:53,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 02:12:53,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 02:12:53,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 02:12:53,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:12:53,168 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 02:12:53,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 02:12:53,184 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-07-12 02:12:53,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 02:12:53,185 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2022-07-12 02:12:53,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 02:12:53,190 INFO L225 Difference]: With dead ends: 43 [2022-07-12 02:12:53,191 INFO L226 Difference]: Without dead ends: 19 [2022-07-12 02:12:53,193 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 02:12:53,197 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 02:12:53,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 02:12:53,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-12 02:12:53,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-12 02:12:53,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-12 02:12:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-07-12 02:12:53,227 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2022-07-12 02:12:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 02:12:53,228 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-07-12 02:12:53,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 02:12:53,228 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-07-12 02:12:53,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-12 02:12:53,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 02:12:53,230 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 02:12:53,292 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 02:12:53,451 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 02:12:53,452 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 02:12:53,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 02:12:53,453 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2022-07-12 02:12:53,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 02:12:53,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [675496110] [2022-07-12 02:12:53,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 02:12:53,453 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 02:12:53,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 02:12:53,456 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 02:12:53,458 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process