./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_2_4.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 44e41a637fa9468dc0732b4bb0eab375ec0174d4f214854050209bd1011a360f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:22:17,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:22:17,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:22:17,987 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:22:17,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:22:17,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:22:17,995 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:22:17,999 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:22:18,001 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:22:18,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:22:18,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:22:18,004 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:22:18,004 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:22:18,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:22:18,006 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:22:18,007 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:22:18,008 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:22:18,008 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:22:18,010 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:22:18,011 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:22:18,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:22:18,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:22:18,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:22:18,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:22:18,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:22:18,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:22:18,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:22:18,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:22:18,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:22:18,019 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:22:18,020 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:22:18,020 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:22:18,021 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:22:18,022 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:22:18,022 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:22:18,023 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:22:18,023 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:22:18,024 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:22:18,024 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:22:18,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:22:18,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:22:18,026 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 23:22:18,045 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:22:18,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:22:18,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:22:18,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:22:18,047 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:22:18,047 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:22:18,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:22:18,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:22:18,048 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:22:18,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:22:18,049 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:22:18,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 23:22:18,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:22:18,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:22:18,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:22:18,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:22:18,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:22:18,050 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:22:18,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:22:18,051 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:22:18,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:22:18,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:22:18,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:22:18,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:22:18,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:22:18,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:22:18,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:22:18,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:22:18,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 23:22:18,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 23:22:18,053 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:22:18,053 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:22:18,054 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:22:18,054 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:22:18,054 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44e41a637fa9468dc0732b4bb0eab375ec0174d4f214854050209bd1011a360f [2021-12-15 23:22:18,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:22:18,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:22:18,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:22:18,297 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:22:18,297 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:22:18,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_4.i [2021-12-15 23:22:18,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf03421be/8bdd885a8cd5482680a4736e9773b3bf/FLAG999c702e9 [2021-12-15 23:22:18,808 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:22:18,809 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_4.i [2021-12-15 23:22:18,814 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf03421be/8bdd885a8cd5482680a4736e9773b3bf/FLAG999c702e9 [2021-12-15 23:22:18,836 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf03421be/8bdd885a8cd5482680a4736e9773b3bf [2021-12-15 23:22:18,838 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:22:18,839 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:22:18,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:22:18,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:22:18,845 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:22:18,846 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:22:18" (1/1) ... [2021-12-15 23:22:18,847 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3523598e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:18, skipping insertion in model container [2021-12-15 23:22:18,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:22:18" (1/1) ... [2021-12-15 23:22:18,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:22:18,865 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:22:19,005 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_4.i[1743,1756] [2021-12-15 23:22:19,015 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:22:19,024 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:22:19,052 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_4.i[1743,1756] [2021-12-15 23:22:19,055 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:22:19,068 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:22:19,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:19 WrapperNode [2021-12-15 23:22:19,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:22:19,069 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:22:19,069 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:22:19,069 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:22:19,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:19" (1/1) ... [2021-12-15 23:22:19,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:19" (1/1) ... [2021-12-15 23:22:19,100 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2021-12-15 23:22:19,100 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:22:19,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:22:19,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:22:19,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:22:19,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:19" (1/1) ... [2021-12-15 23:22:19,107 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:19" (1/1) ... [2021-12-15 23:22:19,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:19" (1/1) ... [2021-12-15 23:22:19,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:19" (1/1) ... [2021-12-15 23:22:19,115 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:19" (1/1) ... [2021-12-15 23:22:19,116 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:19" (1/1) ... [2021-12-15 23:22:19,120 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:19" (1/1) ... [2021-12-15 23:22:19,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:22:19,126 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:22:19,127 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:22:19,127 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:22:19,128 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:19" (1/1) ... [2021-12-15 23:22:19,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:22:19,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:22:19,159 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) [2021-12-15 23:22:19,161 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 [2021-12-15 23:22:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:22:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-15 23:22:19,184 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-15 23:22:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-15 23:22:19,184 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-15 23:22:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 23:22:19,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:22:19,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:22:19,230 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:22:19,232 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:22:19,353 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:22:19,359 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:22:19,359 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 23:22:19,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:22:19 BoogieIcfgContainer [2021-12-15 23:22:19,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:22:19,365 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:22:19,365 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:22:19,368 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:22:19,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:22:18" (1/3) ... [2021-12-15 23:22:19,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7ad58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:22:19, skipping insertion in model container [2021-12-15 23:22:19,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:19" (2/3) ... [2021-12-15 23:22:19,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a7ad58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:22:19, skipping insertion in model container [2021-12-15 23:22:19,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:22:19" (3/3) ... [2021-12-15 23:22:19,370 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_4.i [2021-12-15 23:22:19,375 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:22:19,376 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:22:19,425 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:22:19,434 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 [2021-12-15 23:22:19,435 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:22:19,455 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) [2021-12-15 23:22:19,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 23:22:19,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:22:19,467 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] [2021-12-15 23:22:19,468 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:22:19,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:22:19,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2021-12-15 23:22:19,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:22:19,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901321731] [2021-12-15 23:22:19,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:22:19,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:22:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:22:19,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-15 23:22:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:22:19,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-15 23:22:19,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:22:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-15 23:22:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:22:19,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-15 23:22:19,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:22:19,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-15 23:22:19,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 23:22:19,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901321731] [2021-12-15 23:22:19,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901321731] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:22:19,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:22:19,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:22:19,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523669159] [2021-12-15 23:22:19,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:22:19,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:22:19,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 23:22:19,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:22:19,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:22:19,660 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) [2021-12-15 23:22:19,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:22:19,691 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-12-15 23:22:19,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:22:19,694 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 [2021-12-15 23:22:19,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:22:19,700 INFO L225 Difference]: With dead ends: 43 [2021-12-15 23:22:19,715 INFO L226 Difference]: Without dead ends: 19 [2021-12-15 23:22:19,718 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 [2021-12-15 23:22:19,721 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 [2021-12-15 23:22:19,722 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] [2021-12-15 23:22:19,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-15 23:22:19,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-15 23:22:19,771 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) [2021-12-15 23:22:19,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-15 23:22:19,773 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2021-12-15 23:22:19,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:22:19,773 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-15 23:22:19,774 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) [2021-12-15 23:22:19,774 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-15 23:22:19,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 23:22:19,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:22:19,776 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] [2021-12-15 23:22:19,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 23:22:19,776 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:22:19,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:22:19,777 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2021-12-15 23:22:19,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 23:22:19,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744969430] [2021-12-15 23:22:19,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:22:19,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 23:22:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:22:19,820 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-15 23:22:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-15 23:22:19,850 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-15 23:22:19,851 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-15 23:22:19,852 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-15 23:22:19,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 23:22:19,858 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-15 23:22:19,862 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-15 23:22:19,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.12 11:22:19 BoogieIcfgContainer [2021-12-15 23:22:19,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-15 23:22:19,899 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-15 23:22:19,899 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-15 23:22:19,899 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-15 23:22:19,900 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:22:19" (3/4) ... [2021-12-15 23:22:19,902 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-15 23:22:19,902 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-15 23:22:19,902 INFO L158 Benchmark]: Toolchain (without parser) took 1063.21ms. Allocated memory is still 102.8MB. Free memory was 71.3MB in the beginning and 41.1MB in the end (delta: 30.3MB). Peak memory consumption was 28.8MB. Max. memory is 16.1GB. [2021-12-15 23:22:19,903 INFO L158 Benchmark]: CDTParser took 0.23ms. Allocated memory is still 79.7MB. Free memory was 50.4MB in the beginning and 50.3MB in the end (delta: 18.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-15 23:22:19,903 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.65ms. Allocated memory is still 102.8MB. Free memory was 71.3MB in the beginning and 79.6MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 23:22:19,904 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.52ms. Allocated memory is still 102.8MB. Free memory was 79.5MB in the beginning and 78.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:22:19,904 INFO L158 Benchmark]: Boogie Preprocessor took 24.61ms. Allocated memory is still 102.8MB. Free memory was 78.1MB in the beginning and 76.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:22:19,904 INFO L158 Benchmark]: RCFGBuilder took 234.47ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 67.7MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-15 23:22:19,905 INFO L158 Benchmark]: TraceAbstraction took 533.39ms. Allocated memory is still 102.8MB. Free memory was 67.6MB in the beginning and 41.8MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2021-12-15 23:22:19,905 INFO L158 Benchmark]: Witness Printer took 3.29ms. Allocated memory is still 102.8MB. Free memory was 41.7MB in the beginning and 41.1MB in the end (delta: 643.5kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-15 23:22:19,908 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23ms. Allocated memory is still 79.7MB. Free memory was 50.4MB in the beginning and 50.3MB in the end (delta: 18.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 226.65ms. Allocated memory is still 102.8MB. Free memory was 71.3MB in the beginning and 79.6MB in the end (delta: -8.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.52ms. Allocated memory is still 102.8MB. Free memory was 79.5MB in the beginning and 78.1MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 24.61ms. Allocated memory is still 102.8MB. Free memory was 78.1MB in the beginning and 76.7MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 234.47ms. Allocated memory is still 102.8MB. Free memory was 76.7MB in the beginning and 67.7MB in the end (delta: 9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 533.39ms. Allocated memory is still 102.8MB. Free memory was 67.6MB in the beginning and 41.8MB in the end (delta: 25.8MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * Witness Printer took 3.29ms. Allocated memory is still 102.8MB. Free memory was 41.7MB in the beginning and 41.1MB in the end (delta: 643.5kB). 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 > -0.8f && IN < 0.8f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -0.8f && IN < 0.8f) [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 [2021-12-15 23:22:19,947 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_4.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 44e41a637fa9468dc0732b4bb0eab375ec0174d4f214854050209bd1011a360f --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-15 23:22:21,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 23:22:21,965 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 23:22:22,007 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 23:22:22,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 23:22:22,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 23:22:22,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 23:22:22,011 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 23:22:22,013 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 23:22:22,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 23:22:22,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 23:22:22,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 23:22:22,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 23:22:22,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 23:22:22,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 23:22:22,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 23:22:22,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 23:22:22,020 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 23:22:22,021 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 23:22:22,023 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 23:22:22,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 23:22:22,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 23:22:22,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 23:22:22,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 23:22:22,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 23:22:22,029 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 23:22:22,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 23:22:22,030 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 23:22:22,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 23:22:22,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 23:22:22,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 23:22:22,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 23:22:22,033 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 23:22:22,034 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 23:22:22,035 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 23:22:22,035 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 23:22:22,036 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 23:22:22,036 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 23:22:22,036 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 23:22:22,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 23:22:22,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 23:22:22,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-15 23:22:22,058 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 23:22:22,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 23:22:22,059 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 23:22:22,059 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 23:22:22,060 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 23:22:22,060 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 23:22:22,061 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 23:22:22,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 23:22:22,061 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 23:22:22,062 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 23:22:22,062 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 23:22:22,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 23:22:22,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 23:22:22,062 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 23:22:22,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 23:22:22,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 23:22:22,063 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-15 23:22:22,063 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-15 23:22:22,063 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-15 23:22:22,064 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 23:22:22,064 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 23:22:22,064 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 23:22:22,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 23:22:22,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 23:22:22,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 23:22:22,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 23:22:22,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:22:22,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 23:22:22,065 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 23:22:22,066 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 23:22:22,066 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-15 23:22:22,066 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-15 23:22:22,066 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 23:22:22,066 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 23:22:22,067 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 23:22:22,067 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 23:22:22,067 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-15 23:22:22,067 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 44e41a637fa9468dc0732b4bb0eab375ec0174d4f214854050209bd1011a360f [2021-12-15 23:22:22,378 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 23:22:22,412 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 23:22:22,415 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 23:22:22,416 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 23:22:22,417 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 23:22:22,418 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_4.i [2021-12-15 23:22:22,481 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1600ba7/d0614c3e3c184ef38d561220d4e47f70/FLAG52c3ef720 [2021-12-15 23:22:22,992 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 23:22:22,994 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_4.i [2021-12-15 23:22:23,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1600ba7/d0614c3e3c184ef38d561220d4e47f70/FLAG52c3ef720 [2021-12-15 23:22:23,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd1600ba7/d0614c3e3c184ef38d561220d4e47f70 [2021-12-15 23:22:23,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 23:22:23,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 23:22:23,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 23:22:23,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 23:22:23,484 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 23:22:23,485 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:22:23" (1/1) ... [2021-12-15 23:22:23,487 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cb409fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:23, skipping insertion in model container [2021-12-15 23:22:23,487 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 11:22:23" (1/1) ... [2021-12-15 23:22:23,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 23:22:23,509 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 23:22:23,641 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_4.i[1743,1756] [2021-12-15 23:22:23,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:22:23,658 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 23:22:23,681 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_4.i[1743,1756] [2021-12-15 23:22:23,681 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 23:22:23,711 INFO L208 MainTranslator]: Completed translation [2021-12-15 23:22:23,712 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:23 WrapperNode [2021-12-15 23:22:23,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 23:22:23,713 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 23:22:23,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 23:22:23,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 23:22:23,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:23" (1/1) ... [2021-12-15 23:22:23,727 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:23" (1/1) ... [2021-12-15 23:22:23,742 INFO L137 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2021-12-15 23:22:23,743 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 23:22:23,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 23:22:23,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 23:22:23,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 23:22:23,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:23" (1/1) ... [2021-12-15 23:22:23,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:23" (1/1) ... [2021-12-15 23:22:23,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:23" (1/1) ... [2021-12-15 23:22:23,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:23" (1/1) ... [2021-12-15 23:22:23,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:23" (1/1) ... [2021-12-15 23:22:23,762 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:23" (1/1) ... [2021-12-15 23:22:23,764 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:23" (1/1) ... [2021-12-15 23:22:23,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 23:22:23,768 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 23:22:23,768 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 23:22:23,768 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 23:22:23,769 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:23" (1/1) ... [2021-12-15 23:22:23,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 23:22:23,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 23:22:23,795 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) [2021-12-15 23:22:23,801 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 [2021-12-15 23:22:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 23:22:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-15 23:22:23,834 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-15 23:22:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-15 23:22:23,834 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2021-12-15 23:22:23,835 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2021-12-15 23:22:23,835 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 23:22:23,835 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 23:22:23,898 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 23:22:23,900 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 23:22:31,641 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 23:22:31,646 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 23:22:31,646 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-15 23:22:31,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:22:31 BoogieIcfgContainer [2021-12-15 23:22:31,648 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 23:22:31,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 23:22:31,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 23:22:31,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 23:22:31,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 11:22:23" (1/3) ... [2021-12-15 23:22:31,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a45f45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:22:31, skipping insertion in model container [2021-12-15 23:22:31,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 11:22:23" (2/3) ... [2021-12-15 23:22:31,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a45f45f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 11:22:31, skipping insertion in model container [2021-12-15 23:22:31,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 11:22:31" (3/3) ... [2021-12-15 23:22:31,659 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_4.i [2021-12-15 23:22:31,663 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 23:22:31,664 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 23:22:31,718 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 23:22:31,723 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 [2021-12-15 23:22:31,724 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 23:22:31,737 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) [2021-12-15 23:22:31,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 23:22:31,742 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:22:31,743 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] [2021-12-15 23:22:31,743 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:22:31,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:22:31,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2021-12-15 23:22:31,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:22:31,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1539619700] [2021-12-15 23:22:31,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:22:31,761 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:22:31,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:22:31,765 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) [2021-12-15 23:22:31,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-15 23:22:33,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 23:22:33,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-15 23:22:33,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 23:22:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-15 23:22:33,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-15 23:22:33,904 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-15 23:22:33,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1539619700] [2021-12-15 23:22:33,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1539619700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 23:22:33,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 23:22:33,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 23:22:33,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342599452] [2021-12-15 23:22:33,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 23:22:33,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-15 23:22:33,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-15 23:22:33,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-15 23:22:33,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-15 23:22:33,935 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) [2021-12-15 23:22:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 23:22:33,949 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2021-12-15 23:22:33,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-15 23:22:33,952 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 [2021-12-15 23:22:33,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 23:22:33,957 INFO L225 Difference]: With dead ends: 43 [2021-12-15 23:22:33,957 INFO L226 Difference]: Without dead ends: 19 [2021-12-15 23:22:33,959 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 [2021-12-15 23:22:33,966 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 [2021-12-15 23:22:33,969 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] [2021-12-15 23:22:33,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-15 23:22:33,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-15 23:22:33,998 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) [2021-12-15 23:22:33,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-15 23:22:34,000 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2021-12-15 23:22:34,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 23:22:34,001 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-15 23:22:34,001 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) [2021-12-15 23:22:34,001 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-15 23:22:34,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-15 23:22:34,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 23:22:34,003 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] [2021-12-15 23:22:34,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-15 23:22:34,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-15 23:22:34,204 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 23:22:34,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 23:22:34,205 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2021-12-15 23:22:34,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-15 23:22:34,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [428161214] [2021-12-15 23:22:34,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 23:22:34,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-15 23:22:34,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-15 23:22:34,208 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) [2021-12-15 23:22:34,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process