./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/floats-cdfpl/newton_2_5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_2_5.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 799e2ca02ed318ae0a435976e98168672daf7c64e071ba008e9464d075c9d350 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:21:50,047 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:21:50,048 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:21:50,088 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:21:50,089 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:21:50,090 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:21:50,092 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:21:50,095 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:21:50,097 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:21:50,101 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:21:50,103 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:21:50,105 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:21:50,105 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:21:50,107 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:21:50,109 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:21:50,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:21:50,113 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:21:50,114 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:21:50,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:21:50,118 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:21:50,120 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:21:50,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:21:50,122 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:21:50,123 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:21:50,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:21:50,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:21:50,128 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:21:50,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:21:50,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:21:50,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:21:50,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:21:50,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:21:50,133 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:21:50,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:21:50,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:21:50,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:21:50,134 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:21:50,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:21:50,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:21:50,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:21:50,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:21:50,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:21:50,138 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 13:21:50,162 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:21:50,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:21:50,163 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:21:50,163 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:21:50,164 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:21:50,164 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:21:50,164 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:21:50,164 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:21:50,165 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:21:50,165 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:21:50,165 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:21:50,166 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 13:21:50,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:21:50,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:21:50,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:21:50,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:21:50,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:21:50,167 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:21:50,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:21:50,168 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:21:50,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:21:50,168 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:21:50,168 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:21:50,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:21:50,169 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:21:50,169 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:21:50,169 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:21:50,169 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:21:50,169 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 13:21:50,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 13:21:50,170 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:21:50,170 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:21:50,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:21:50,170 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 799e2ca02ed318ae0a435976e98168672daf7c64e071ba008e9464d075c9d350 [2022-07-19 13:21:50,344 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:21:50,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:21:50,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:21:50,364 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:21:50,365 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:21:50,366 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2022-07-19 13:21:50,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fae102d/512509220d4c433b8113f5bd1fc1919f/FLAG46000ad28 [2022-07-19 13:21:50,787 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:21:50,788 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2022-07-19 13:21:50,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fae102d/512509220d4c433b8113f5bd1fc1919f/FLAG46000ad28 [2022-07-19 13:21:50,816 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05fae102d/512509220d4c433b8113f5bd1fc1919f [2022-07-19 13:21:50,818 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:21:50,819 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:21:50,820 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:21:50,820 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:21:50,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:21:50,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:21:50" (1/1) ... [2022-07-19 13:21:50,823 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@170b4ea4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:50, skipping insertion in model container [2022-07-19 13:21:50,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:21:50" (1/1) ... [2022-07-19 13:21:50,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:21:50,839 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:21:50,982 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1743,1756] [2022-07-19 13:21:50,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:21:50,994 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:21:51,018 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1743,1756] [2022-07-19 13:21:51,021 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:21:51,033 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:21:51,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:51 WrapperNode [2022-07-19 13:21:51,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:21:51,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:21:51,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:21:51,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:21:51,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:51" (1/1) ... [2022-07-19 13:21:51,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:51" (1/1) ... [2022-07-19 13:21:51,058 INFO L137 Inliner]: procedures = 17, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 29 [2022-07-19 13:21:51,058 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:21:51,059 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:21:51,060 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:21:51,060 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:21:51,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:51" (1/1) ... [2022-07-19 13:21:51,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:51" (1/1) ... [2022-07-19 13:21:51,073 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:51" (1/1) ... [2022-07-19 13:21:51,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:51" (1/1) ... [2022-07-19 13:21:51,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:51" (1/1) ... [2022-07-19 13:21:51,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:51" (1/1) ... [2022-07-19 13:21:51,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:51" (1/1) ... [2022-07-19 13:21:51,087 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:21:51,087 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:21:51,087 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:21:51,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:21:51,092 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:51" (1/1) ... [2022-07-19 13:21:51,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:21:51,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:21:51,126 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 13:21:51,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 13:21:51,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:21:51,155 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-19 13:21:51,155 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-19 13:21:51,155 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-19 13:21:51,156 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-19 13:21:51,156 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 13:21:51,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:21:51,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:21:51,201 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:21:51,202 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:21:51,349 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:21:51,369 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:21:51,369 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:21:51,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:21:51 BoogieIcfgContainer [2022-07-19 13:21:51,370 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:21:51,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:21:51,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:21:51,389 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:21:51,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:21:50" (1/3) ... [2022-07-19 13:21:51,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4566bcb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:21:51, skipping insertion in model container [2022-07-19 13:21:51,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:51" (2/3) ... [2022-07-19 13:21:51,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4566bcb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:21:51, skipping insertion in model container [2022-07-19 13:21:51,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:21:51" (3/3) ... [2022-07-19 13:21:51,392 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_5.i [2022-07-19 13:21:51,402 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:21:51,402 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:21:51,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:21:51,487 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7c39868c, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@12d87e9a [2022-07-19 13:21:51,487 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:21:51,492 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 13:21:51,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 13:21:51,509 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:21:51,510 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:21:51,510 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:21:51,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:21:51,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2022-07-19 13:21:51,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:21:51,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179312519] [2022-07-19 13:21:51,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:21:51,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:21:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:21:51,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 13:21:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:21:51,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 13:21:51,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:21:51,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 13:21:51,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:21:51,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 13:21:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:21:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 13:21:51,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 13:21:51,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179312519] [2022-07-19 13:21:51,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179312519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:21:51,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:21:51,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:21:51,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189852317] [2022-07-19 13:21:51,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:21:51,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:21:51,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 13:21:51,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:21:51,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:21:51,669 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-19 13:21:51,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:21:51,680 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-07-19 13:21:51,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:21:51,682 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2022-07-19 13:21:51,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:21:51,686 INFO L225 Difference]: With dead ends: 43 [2022-07-19 13:21:51,686 INFO L226 Difference]: Without dead ends: 19 [2022-07-19 13:21:51,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:21:51,690 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:21:51,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:21:51,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-19 13:21:51,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-19 13:21:51,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 13:21:51,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-07-19 13:21:51,714 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2022-07-19 13:21:51,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:21:51,715 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-07-19 13:21:51,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-19 13:21:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-07-19 13:21:51,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 13:21:51,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:21:51,716 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:21:51,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 13:21:51,717 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:21:51,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:21:51,717 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2022-07-19 13:21:51,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 13:21:51,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804728548] [2022-07-19 13:21:51,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:21:51,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 13:21:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:21:51,729 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-19 13:21:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-19 13:21:51,753 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-19 13:21:51,753 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-19 13:21:51,754 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-19 13:21:51,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 13:21:51,758 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-07-19 13:21:51,760 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 13:21:51,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 01:21:51 BoogieIcfgContainer [2022-07-19 13:21:51,775 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 13:21:51,775 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 13:21:51,775 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 13:21:51,776 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 13:21:51,776 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:21:51" (3/4) ... [2022-07-19 13:21:51,778 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-19 13:21:51,778 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 13:21:51,778 INFO L158 Benchmark]: Toolchain (without parser) took 959.65ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 55.4MB in the beginning and 50.1MB in the end (delta: 5.3MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-07-19 13:21:51,779 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 88.1MB. Free memory was 44.6MB in the beginning and 44.5MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:21:51,779 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.46ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 55.1MB in the beginning and 88.9MB in the end (delta: -33.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:21:51,780 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.85ms. Allocated memory is still 113.2MB. Free memory was 88.9MB in the beginning and 87.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:21:51,780 INFO L158 Benchmark]: Boogie Preprocessor took 27.30ms. Allocated memory is still 113.2MB. Free memory was 87.3MB in the beginning and 86.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 13:21:51,780 INFO L158 Benchmark]: RCFGBuilder took 283.15ms. Allocated memory is still 113.2MB. Free memory was 86.3MB in the beginning and 77.4MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 13:21:51,781 INFO L158 Benchmark]: TraceAbstraction took 389.88ms. Allocated memory is still 113.2MB. Free memory was 76.9MB in the beginning and 50.6MB in the end (delta: 26.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2022-07-19 13:21:51,781 INFO L158 Benchmark]: Witness Printer took 2.65ms. Allocated memory is still 113.2MB. Free memory was 50.6MB in the beginning and 50.1MB in the end (delta: 505.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 13:21:51,783 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 88.1MB. Free memory was 44.6MB in the beginning and 44.5MB in the end (delta: 39.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 214.46ms. Allocated memory was 88.1MB in the beginning and 113.2MB in the end (delta: 25.2MB). Free memory was 55.1MB in the beginning and 88.9MB in the end (delta: -33.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.85ms. Allocated memory is still 113.2MB. Free memory was 88.9MB in the beginning and 87.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 27.30ms. Allocated memory is still 113.2MB. Free memory was 87.3MB in the beginning and 86.3MB in the end (delta: 1.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 283.15ms. Allocated memory is still 113.2MB. Free memory was 86.3MB in the beginning and 77.4MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 389.88ms. Allocated memory is still 113.2MB. Free memory was 76.9MB in the beginning and 50.6MB in the end (delta: 26.3MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * Witness Printer took 2.65ms. Allocated memory is still 113.2MB. Free memory was 50.6MB in the beginning and 50.1MB in the end (delta: 505.3kB). 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 > -1.0f && IN < 1.0f) [L24] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L40] RET assume_abort_if_not(IN > -1.0f && IN < 1.0f) [L42] CALL, EXPR f(IN) VAL [\old(x)=49] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=49, x=49] [L42] RET, EXPR f(IN) VAL [f(IN)=50, IN=49] [L42] CALL, EXPR fp(IN) VAL [\old(x)=49] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=49, x=49] [L42] RET, EXPR fp(IN) VAL [f(IN)=50, fp(IN)=53, IN=49] [L42] float x = IN - f(IN)/fp(IN); [L44] CALL, EXPR f(x) VAL [\old(x)=51] [L29] return x - (x*x*x)/6.0f + (x*x*x*x*x)/120.0f + (x*x*x*x*x*x*x)/5040.0f; VAL [\old(x)=51, x=51] [L44] RET, EXPR f(x) VAL [f(x)=52, IN=49, x=51] [L44] CALL, EXPR fp(x) VAL [\old(x)=51] [L34] return 1 - (x*x)/2.0f + (x*x*x*x)/24.0f + (x*x*x*x*x*x)/720.0f; VAL [\old(x)=51, x=51] [L44] RET, EXPR fp(x) VAL [f(x)=52, fp(x)=54, IN=49, x=51] [L44] x = x - f(x)/fp(x) [L50] COND TRUE !(x < 0.1) VAL [IN=49] [L51] reach_error() VAL [IN=49] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 0 IncrementalHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 24 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, InterpolantAutomatonStates: 2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 23 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 6/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-19 13:21:51,812 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/floats-cdfpl/newton_2_5.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 799e2ca02ed318ae0a435976e98168672daf7c64e071ba008e9464d075c9d350 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 13:21:53,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 13:21:53,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 13:21:53,631 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 13:21:53,632 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 13:21:53,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 13:21:53,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 13:21:53,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 13:21:53,640 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 13:21:53,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 13:21:53,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 13:21:53,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 13:21:53,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 13:21:53,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 13:21:53,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 13:21:53,660 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 13:21:53,660 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 13:21:53,661 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 13:21:53,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 13:21:53,668 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 13:21:53,669 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 13:21:53,669 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 13:21:53,671 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 13:21:53,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 13:21:53,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 13:21:53,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 13:21:53,680 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 13:21:53,681 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 13:21:53,681 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 13:21:53,682 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 13:21:53,682 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 13:21:53,683 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 13:21:53,684 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 13:21:53,684 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 13:21:53,685 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 13:21:53,686 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 13:21:53,686 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 13:21:53,687 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 13:21:53,687 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 13:21:53,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 13:21:53,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 13:21:53,688 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 13:21:53,695 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2022-07-19 13:21:53,720 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 13:21:53,720 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 13:21:53,721 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 13:21:53,721 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 13:21:53,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 13:21:53,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 13:21:53,722 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 13:21:53,722 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 13:21:53,722 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 13:21:53,723 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 13:21:53,723 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 13:21:53,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 13:21:53,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 13:21:53,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 13:21:53,724 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 13:21:53,724 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 13:21:53,724 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-19 13:21:53,724 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-19 13:21:53,724 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-19 13:21:53,724 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 13:21:53,725 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 13:21:53,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 13:21:53,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 13:21:53,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 13:21:53,725 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 13:21:53,725 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 13:21:53,725 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:21:53,726 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 13:21:53,726 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 13:21:53,726 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 13:21:53,726 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-19 13:21:53,726 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-19 13:21:53,727 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 13:21:53,727 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 13:21:53,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 13:21:53,727 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-19 13:21:53,727 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 799e2ca02ed318ae0a435976e98168672daf7c64e071ba008e9464d075c9d350 [2022-07-19 13:21:53,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 13:21:54,005 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 13:21:54,008 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 13:21:54,010 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 13:21:54,010 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 13:21:54,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2022-07-19 13:21:54,074 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16043de65/aa49ec8dc5574f8bb68c19752991e68d/FLAGffaef03a5 [2022-07-19 13:21:54,426 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 13:21:54,426 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i [2022-07-19 13:21:54,431 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16043de65/aa49ec8dc5574f8bb68c19752991e68d/FLAGffaef03a5 [2022-07-19 13:21:54,867 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16043de65/aa49ec8dc5574f8bb68c19752991e68d [2022-07-19 13:21:54,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 13:21:54,870 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 13:21:54,872 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 13:21:54,872 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 13:21:54,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 13:21:54,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:21:54" (1/1) ... [2022-07-19 13:21:54,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e505451 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:54, skipping insertion in model container [2022-07-19 13:21:54,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 01:21:54" (1/1) ... [2022-07-19 13:21:54,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 13:21:54,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 13:21:54,992 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1743,1756] [2022-07-19 13:21:54,994 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:21:55,001 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 13:21:55,024 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/floats-cdfpl/newton_2_5.i[1743,1756] [2022-07-19 13:21:55,028 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 13:21:55,044 INFO L208 MainTranslator]: Completed translation [2022-07-19 13:21:55,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:55 WrapperNode [2022-07-19 13:21:55,044 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 13:21:55,045 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 13:21:55,045 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 13:21:55,045 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 13:21:55,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:55" (1/1) ... [2022-07-19 13:21:55,056 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:55" (1/1) ... [2022-07-19 13:21:55,067 INFO L137 Inliner]: procedures = 18, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 30 [2022-07-19 13:21:55,068 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 13:21:55,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 13:21:55,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 13:21:55,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 13:21:55,073 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:55" (1/1) ... [2022-07-19 13:21:55,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:55" (1/1) ... [2022-07-19 13:21:55,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:55" (1/1) ... [2022-07-19 13:21:55,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:55" (1/1) ... [2022-07-19 13:21:55,097 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:55" (1/1) ... [2022-07-19 13:21:55,103 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:55" (1/1) ... [2022-07-19 13:21:55,104 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:55" (1/1) ... [2022-07-19 13:21:55,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 13:21:55,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 13:21:55,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 13:21:55,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 13:21:55,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:55" (1/1) ... [2022-07-19 13:21:55,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 13:21:55,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 13:21:55,132 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 13:21:55,154 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 13:21:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 13:21:55,157 INFO L130 BoogieDeclarations]: Found specification of procedure f [2022-07-19 13:21:55,157 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2022-07-19 13:21:55,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-07-19 13:21:55,161 INFO L130 BoogieDeclarations]: Found specification of procedure fp [2022-07-19 13:21:55,161 INFO L138 BoogieDeclarations]: Found implementation of procedure fp [2022-07-19 13:21:55,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 13:21:55,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 13:21:55,215 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 13:21:55,217 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 13:22:01,774 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 13:22:01,779 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 13:22:01,779 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 13:22:01,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:22:01 BoogieIcfgContainer [2022-07-19 13:22:01,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 13:22:01,781 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 13:22:01,782 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 13:22:01,784 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 13:22:01,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 01:21:54" (1/3) ... [2022-07-19 13:22:01,784 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba0a960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:22:01, skipping insertion in model container [2022-07-19 13:22:01,784 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 01:21:55" (2/3) ... [2022-07-19 13:22:01,785 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba0a960 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 01:22:01, skipping insertion in model container [2022-07-19 13:22:01,785 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 01:22:01" (3/3) ... [2022-07-19 13:22:01,785 INFO L111 eAbstractionObserver]: Analyzing ICFG newton_2_5.i [2022-07-19 13:22:01,794 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 13:22:01,794 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 13:22:01,833 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 13:22:01,842 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@480d6ad4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3a8d1f64 [2022-07-19 13:22:01,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 13:22:01,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 13:22:01,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 13:22:01,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:22:01,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:22:01,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:22:01,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:22:01,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1905727787, now seen corresponding path program 1 times [2022-07-19 13:22:01,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:22:01,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [392976652] [2022-07-19 13:22:01,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:22:01,881 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:22:01,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:22:01,883 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:22:01,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-19 13:22:03,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 13:22:03,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-19 13:22:03,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 13:22:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 13:22:03,665 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 13:22:03,665 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-19 13:22:03,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [392976652] [2022-07-19 13:22:03,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [392976652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 13:22:03,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 13:22:03,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 13:22:03,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041847376] [2022-07-19 13:22:03,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 13:22:03,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 13:22:03,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-19 13:22:03,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 13:22:03,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:22:03,695 INFO L87 Difference]: Start difference. First operand has 23 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-19 13:22:03,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 13:22:03,712 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-07-19 13:22:03,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 13:22:03,714 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 24 [2022-07-19 13:22:03,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 13:22:03,719 INFO L225 Difference]: With dead ends: 43 [2022-07-19 13:22:03,719 INFO L226 Difference]: Without dead ends: 19 [2022-07-19 13:22:03,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 13:22:03,725 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 13:22:03,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 13:22:03,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2022-07-19 13:22:03,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2022-07-19 13:22:03,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 12 states have (on average 1.0) internal successors, (12), 12 states have internal predecessors, (12), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-19 13:22:03,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2022-07-19 13:22:03,757 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 24 [2022-07-19 13:22:03,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 13:22:03,758 INFO L495 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2022-07-19 13:22:03,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-19 13:22:03,758 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2022-07-19 13:22:03,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-19 13:22:03,759 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 13:22:03,759 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 13:22:03,812 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-19 13:22:03,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-19 13:22:03,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 13:22:03,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 13:22:03,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2124582505, now seen corresponding path program 1 times [2022-07-19 13:22:03,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-19 13:22:03,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1271273201] [2022-07-19 13:22:03,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 13:22:03,978 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-19 13:22:03,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-19 13:22:03,979 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-19 13:22:03,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process