./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_8.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 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_8.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 2b45f5e4a7a74ad007db534387a803e6f6ecf5579d866d96b3759eca1ee7b29a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:43:27,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:43:27,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:43:27,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:43:27,893 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:43:27,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:43:27,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:43:27,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:43:27,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:43:27,905 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:43:27,905 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:43:27,906 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:43:27,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:43:27,908 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:43:27,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:43:27,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:43:27,911 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:43:27,912 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:43:27,913 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:43:27,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:43:27,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:43:27,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:43:27,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:43:27,918 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:43:27,925 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:43:27,925 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:43:27,925 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:43:27,926 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:43:27,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:43:27,927 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:43:27,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:43:27,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:43:27,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:43:27,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:43:27,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:43:27,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:43:27,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:43:27,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:43:27,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:43:27,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:43:27,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:43:27,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 11:43:27,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:43:27,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:43:27,959 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:43:27,959 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:43:27,960 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:43:27,960 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:43:27,960 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:43:27,960 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:43:27,960 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:43:27,961 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:43:27,961 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:43:27,961 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 11:43:27,962 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:43:27,962 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:43:27,962 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:43:27,962 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:43:27,962 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:43:27,962 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:43:27,962 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:43:27,963 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:43:27,963 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:43:27,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:43:27,963 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:43:27,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:43:27,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:43:27,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:43:27,964 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:43:27,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:43:27,965 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 11:43:27,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 11:43:27,965 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:43:27,965 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:43:27,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:43:27,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:43:27,966 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b45f5e4a7a74ad007db534387a803e6f6ecf5579d866d96b3759eca1ee7b29a [2021-12-21 11:43:28,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:43:28,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:43:28,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:43:28,184 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:43:28,185 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:43:28,185 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-12-21 11:43:28,252 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ba3be4b4/e2b7d33b9bd14cc1a97cc3ea4f630185/FLAG79828e1ef [2021-12-21 11:43:28,665 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:43:28,666 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-12-21 11:43:28,676 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ba3be4b4/e2b7d33b9bd14cc1a97cc3ea4f630185/FLAG79828e1ef [2021-12-21 11:43:28,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3ba3be4b4/e2b7d33b9bd14cc1a97cc3ea4f630185 [2021-12-21 11:43:28,694 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:43:28,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:43:28,700 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:43:28,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:43:28,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:43:28,705 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:43:28" (1/1) ... [2021-12-21 11:43:28,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73ff8837 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:28, skipping insertion in model container [2021-12-21 11:43:28,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:43:28" (1/1) ... [2021-12-21 11:43:28,711 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:43:28,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:43:28,907 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_8.i[1743,1756] [2021-12-21 11:43:28,911 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:43:28,918 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:43:28,942 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_8.i[1743,1756] [2021-12-21 11:43:28,946 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:43:28,959 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:43:28,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:28 WrapperNode [2021-12-21 11:43:28,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:43:28,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:43:28,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:43:28,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:43:28,967 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:28" (1/1) ... [2021-12-21 11:43:28,974 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:28" (1/1) ... [2021-12-21 11:43:28,993 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2021-12-21 11:43:28,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:43:28,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:43:28,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:43:28,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:43:29,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:28" (1/1) ... [2021-12-21 11:43:29,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:28" (1/1) ... [2021-12-21 11:43:29,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:28" (1/1) ... [2021-12-21 11:43:29,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:28" (1/1) ... [2021-12-21 11:43:29,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:28" (1/1) ... [2021-12-21 11:43:29,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:28" (1/1) ... [2021-12-21 11:43:29,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:28" (1/1) ... [2021-12-21 11:43:29,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:43:29,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:43:29,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:43:29,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:43:29,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:28" (1/1) ... [2021-12-21 11:43:29,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:43:29,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:43:29,072 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 11:43:29,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 11:43:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:43:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-21 11:43:29,138 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-21 11:43:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-21 11:43:29,138 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-21 11:43:29,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 11:43:29,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:43:29,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:43:29,201 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:43:29,203 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:43:29,316 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:43:29,320 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:43:29,321 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 11:43:29,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:43:29 BoogieIcfgContainer [2021-12-21 11:43:29,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:43:29,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:43:29,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:43:29,326 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:43:29,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:43:28" (1/3) ... [2021-12-21 11:43:29,327 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e70df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:43:29, skipping insertion in model container [2021-12-21 11:43:29,327 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:28" (2/3) ... [2021-12-21 11:43:29,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e70df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:43:29, skipping insertion in model container [2021-12-21 11:43:29,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:43:29" (3/3) ... [2021-12-21 11:43:29,329 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2021-12-21 11:43:29,332 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:43:29,332 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 11:43:29,363 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:43:29,370 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 11:43:29,370 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 11:43:29,381 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) [2021-12-21 11:43:29,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 11:43:29,384 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:43:29,384 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:43:29,385 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:43:29,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:43:29,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2021-12-21 11:43:29,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:43:29,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031736169] [2021-12-21 11:43:29,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:43:29,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:43:29,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:43:29,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-21 11:43:29,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:43:29,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-21 11:43:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:43:29,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-21 11:43:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:43:29,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-21 11:43:29,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:43:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-21 11:43:29,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 11:43:29,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031736169] [2021-12-21 11:43:29,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031736169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:43:29,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:43:29,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:43:29,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920508520] [2021-12-21 11:43:29,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:43:29,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 11:43:29,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 11:43:29,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 11:43:29,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:43:29,620 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) [2021-12-21 11:43:29,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:43:29,634 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-12-21 11:43:29,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 11:43:29,636 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 [2021-12-21 11:43:29,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:43:29,640 INFO L225 Difference]: With dead ends: 43 [2021-12-21 11:43:29,641 INFO L226 Difference]: Without dead ends: 19 [2021-12-21 11:43:29,643 INFO L932 BasicCegarLoop]: 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 [2021-12-21 11:43:29,648 INFO L933 BasicCegarLoop]: 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 [2021-12-21 11:43:29,648 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 11:43:29,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-21 11:43:29,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-21 11:43:29,676 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) [2021-12-21 11:43:29,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-21 11:43:29,678 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2021-12-21 11:43:29,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:43:29,679 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-21 11:43:29,679 INFO L471 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) [2021-12-21 11:43:29,679 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-21 11:43:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 11:43:29,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:43:29,681 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:43:29,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 11:43:29,682 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:43:29,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:43:29,684 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2021-12-21 11:43:29,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 11:43:29,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4831506] [2021-12-21 11:43:29,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:43:29,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 11:43:29,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 11:43:29,719 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-21 11:43:29,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-21 11:43:29,765 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-21 11:43:29,765 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-21 11:43:29,767 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-21 11:43:29,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 11:43:29,772 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-21 11:43:29,775 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-21 11:43:29,799 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.12 11:43:29 BoogieIcfgContainer [2021-12-21 11:43:29,799 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-21 11:43:29,800 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-21 11:43:29,800 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-21 11:43:29,800 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-21 11:43:29,801 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:43:29" (3/4) ... [2021-12-21 11:43:29,802 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-21 11:43:29,803 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-21 11:43:29,804 INFO L158 Benchmark]: Toolchain (without parser) took 1107.49ms. Allocated memory is still 157.3MB. Free memory was 132.1MB in the beginning and 93.3MB in the end (delta: 38.8MB). Peak memory consumption was 35.9MB. Max. memory is 16.1GB. [2021-12-21 11:43:29,805 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 57.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:43:29,805 INFO L158 Benchmark]: CACSL2BoogieTranslator took 259.94ms. Allocated memory is still 157.3MB. Free memory was 132.1MB in the beginning and 131.8MB in the end (delta: 247.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-21 11:43:29,807 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.67ms. Allocated memory is still 157.3MB. Free memory was 131.8MB in the beginning and 130.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:43:29,808 INFO L158 Benchmark]: Boogie Preprocessor took 54.08ms. Allocated memory is still 157.3MB. Free memory was 130.6MB in the beginning and 128.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-21 11:43:29,810 INFO L158 Benchmark]: RCFGBuilder took 273.56ms. Allocated memory is still 157.3MB. Free memory was 128.9MB in the beginning and 119.3MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-21 11:43:29,810 INFO L158 Benchmark]: TraceAbstraction took 475.42ms. Allocated memory is still 157.3MB. Free memory was 118.5MB in the beginning and 93.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-21 11:43:29,813 INFO L158 Benchmark]: Witness Printer took 3.61ms. Allocated memory is still 157.3MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-21 11:43:29,817 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 100.7MB. Free memory is still 57.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 259.94ms. Allocated memory is still 157.3MB. Free memory was 132.1MB in the beginning and 131.8MB in the end (delta: 247.6kB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 32.67ms. Allocated memory is still 157.3MB. Free memory was 131.8MB in the beginning and 130.6MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 54.08ms. Allocated memory is still 157.3MB. Free memory was 130.6MB in the beginning and 128.9MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 273.56ms. Allocated memory is still 157.3MB. Free memory was 128.9MB in the beginning and 119.3MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 475.42ms. Allocated memory is still 157.3MB. Free memory was 118.5MB in the beginning and 93.3MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 3.61ms. Allocated memory is still 157.3MB. Free memory is still 93.3MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 51]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 50, overapproximation of someBinaryArithmeticFLOAToperation at line 44. Possible FailurePath: [L39] float IN = __VERIFIER_nondet_float(); [L40] CALL assume_abort_if_not(IN > -2.0f && IN < 2.0f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -2.0f && IN < 2.0f) [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, PartialOrderReductionTime: 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 [2021-12-21 11:43:29,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_2_8.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 2b45f5e4a7a74ad007db534387a803e6f6ecf5579d866d96b3759eca1ee7b29a --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 11:43:31,770 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 11:43:31,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 11:43:31,811 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 11:43:31,811 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 11:43:31,814 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 11:43:31,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 11:43:31,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 11:43:31,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 11:43:31,825 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 11:43:31,826 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 11:43:31,829 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 11:43:31,829 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 11:43:31,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 11:43:31,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 11:43:31,835 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 11:43:31,836 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 11:43:31,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 11:43:31,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 11:43:31,844 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 11:43:31,845 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 11:43:31,846 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 11:43:31,847 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 11:43:31,848 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 11:43:31,853 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 11:43:31,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 11:43:31,854 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 11:43:31,855 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 11:43:31,855 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 11:43:31,856 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 11:43:31,856 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 11:43:31,857 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 11:43:31,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 11:43:31,858 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 11:43:31,859 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 11:43:31,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 11:43:31,860 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 11:43:31,860 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 11:43:31,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 11:43:31,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 11:43:31,862 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 11:43:31,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-21 11:43:31,893 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 11:43:31,893 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 11:43:31,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 11:43:31,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 11:43:31,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 11:43:31,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 11:43:31,896 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 11:43:31,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 11:43:31,897 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 11:43:31,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 11:43:31,897 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 11:43:31,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 11:43:31,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 11:43:31,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 11:43:31,898 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 11:43:31,898 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 11:43:31,898 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-21 11:43:31,898 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-21 11:43:31,899 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-21 11:43:31,910 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 11:43:31,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 11:43:31,911 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 11:43:31,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 11:43:31,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 11:43:31,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 11:43:31,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 11:43:31,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:43:31,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 11:43:31,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 11:43:31,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 11:43:31,912 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-21 11:43:31,912 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-21 11:43:31,913 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 11:43:31,913 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 11:43:31,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 11:43:31,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 11:43:31,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-21 11:43:31,913 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2b45f5e4a7a74ad007db534387a803e6f6ecf5579d866d96b3759eca1ee7b29a [2021-12-21 11:43:32,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 11:43:32,186 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 11:43:32,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 11:43:32,189 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 11:43:32,190 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 11:43:32,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-12-21 11:43:32,228 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/543f48e34/501e80b2481d49c0bd083baddad5cf35/FLAG7123949b9 [2021-12-21 11:43:32,587 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 11:43:32,587 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_8.i [2021-12-21 11:43:32,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/543f48e34/501e80b2481d49c0bd083baddad5cf35/FLAG7123949b9 [2021-12-21 11:43:32,600 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/543f48e34/501e80b2481d49c0bd083baddad5cf35 [2021-12-21 11:43:32,601 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 11:43:32,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 11:43:32,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 11:43:32,603 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 11:43:32,605 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 11:43:32,606 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:43:32" (1/1) ... [2021-12-21 11:43:32,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16a2ddc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:32, skipping insertion in model container [2021-12-21 11:43:32,606 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 11:43:32" (1/1) ... [2021-12-21 11:43:32,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 11:43:32,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 11:43:32,749 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_8.i[1743,1756] [2021-12-21 11:43:32,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:43:32,765 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 11:43:32,788 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_8.i[1743,1756] [2021-12-21 11:43:32,789 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 11:43:32,803 INFO L208 MainTranslator]: Completed translation [2021-12-21 11:43:32,804 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:32 WrapperNode [2021-12-21 11:43:32,804 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 11:43:32,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 11:43:32,806 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 11:43:32,806 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 11:43:32,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:32" (1/1) ... [2021-12-21 11:43:32,824 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:32" (1/1) ... [2021-12-21 11:43:32,842 INFO L137 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2021-12-21 11:43:32,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 11:43:32,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 11:43:32,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 11:43:32,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 11:43:32,849 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:32" (1/1) ... [2021-12-21 11:43:32,849 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:32" (1/1) ... [2021-12-21 11:43:32,854 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:32" (1/1) ... [2021-12-21 11:43:32,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:32" (1/1) ... [2021-12-21 11:43:32,871 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:32" (1/1) ... [2021-12-21 11:43:32,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:32" (1/1) ... [2021-12-21 11:43:32,874 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:32" (1/1) ... [2021-12-21 11:43:32,877 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 11:43:32,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 11:43:32,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 11:43:32,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 11:43:32,881 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:32" (1/1) ... [2021-12-21 11:43:32,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 11:43:32,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 11:43:32,922 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 11:43:32,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 11:43:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 11:43:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-21 11:43:32,981 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-21 11:43:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-21 11:43:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-21 11:43:32,981 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-21 11:43:32,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 11:43:32,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 11:43:33,035 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 11:43:33,036 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 11:43:41,701 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 11:43:41,704 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 11:43:41,705 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 11:43:41,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:43:41 BoogieIcfgContainer [2021-12-21 11:43:41,706 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 11:43:41,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 11:43:41,718 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 11:43:41,720 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 11:43:41,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 11:43:32" (1/3) ... [2021-12-21 11:43:41,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437689af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:43:41, skipping insertion in model container [2021-12-21 11:43:41,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 11:43:32" (2/3) ... [2021-12-21 11:43:41,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@437689af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 11:43:41, skipping insertion in model container [2021-12-21 11:43:41,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 11:43:41" (3/3) ... [2021-12-21 11:43:41,733 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_8.i [2021-12-21 11:43:41,737 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 11:43:41,737 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 11:43:41,764 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 11:43:41,769 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 11:43:41,769 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 11:43:41,778 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) [2021-12-21 11:43:41,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 11:43:41,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:43:41,782 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:43:41,783 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:43:41,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:43:41,786 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2021-12-21 11:43:41,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:43:41,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1917321460] [2021-12-21 11:43:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:43:41,795 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:43:41,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:43:41,797 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 11:43:41,798 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-21 11:43:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 11:43:43,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-21 11:43:43,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 11:43:43,825 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-21 11:43:43,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 11:43:43,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-21 11:43:43,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1917321460] [2021-12-21 11:43:43,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1917321460] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 11:43:43,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 11:43:43,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 11:43:43,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144952011] [2021-12-21 11:43:43,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 11:43:43,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-21 11:43:43,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-21 11:43:43,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-21 11:43:43,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-21 11:43:43,872 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) [2021-12-21 11:43:43,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 11:43:43,905 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-12-21 11:43:43,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-21 11:43:43,906 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 [2021-12-21 11:43:43,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 11:43:43,910 INFO L225 Difference]: With dead ends: 43 [2021-12-21 11:43:43,910 INFO L226 Difference]: Without dead ends: 19 [2021-12-21 11:43:43,912 INFO L932 BasicCegarLoop]: 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 [2021-12-21 11:43:43,916 INFO L933 BasicCegarLoop]: 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 [2021-12-21 11:43:43,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 11:43:43,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-21 11:43:43,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-21 11:43:43,939 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) [2021-12-21 11:43:43,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-21 11:43:43,941 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2021-12-21 11:43:43,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 11:43:43,941 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-21 11:43:43,942 INFO L471 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) [2021-12-21 11:43:43,942 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-21 11:43:43,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-21 11:43:43,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 11:43:43,943 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 11:43:44,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-21 11:43:44,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-21 11:43:44,172 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 11:43:44,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 11:43:44,173 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2021-12-21 11:43:44,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-21 11:43:44,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [312425871] [2021-12-21 11:43:44,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 11:43:44,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-21 11:43:44,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-21 11:43:44,178 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-21 11:43:44,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process