./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/float-benchs/arctan_Pade.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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/float-benchs/arctan_Pade.c -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 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 23:22:37,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 23:22:37,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 23:22:37,429 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 23:22:37,429 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 23:22:37,432 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 23:22:37,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 23:22:37,437 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 23:22:37,439 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 23:22:37,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 23:22:37,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 23:22:37,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 23:22:37,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 23:22:37,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 23:22:37,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 23:22:37,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 23:22:37,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 23:22:37,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 23:22:37,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 23:22:37,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 23:22:37,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 23:22:37,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 23:22:37,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 23:22:37,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 23:22:37,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 23:22:37,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 23:22:37,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 23:22:37,467 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 23:22:37,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 23:22:37,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 23:22:37,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 23:22:37,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 23:22:37,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 23:22:37,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 23:22:37,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 23:22:37,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 23:22:37,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 23:22:37,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 23:22:37,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 23:22:37,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 23:22:37,475 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 23:22:37,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-27 23:22:37,503 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 23:22:37,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 23:22:37,504 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 23:22:37,504 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 23:22:37,505 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 23:22:37,505 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 23:22:37,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 23:22:37,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 23:22:37,506 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 23:22:37,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 23:22:37,507 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 23:22:37,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-27 23:22:37,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 23:22:37,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 23:22:37,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 23:22:37,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 23:22:37,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 23:22:37,508 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 23:22:37,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 23:22:37,509 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 23:22:37,509 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 23:22:37,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 23:22:37,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 23:22:37,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 23:22:37,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:22:37,516 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 23:22:37,516 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 23:22:37,516 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 23:22:37,516 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-27 23:22:37,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-27 23:22:37,517 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 23:22:37,517 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 23:22:37,517 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 23:22:37,517 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 [2021-12-27 23:22:37,785 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 23:22:37,799 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 23:22:37,801 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 23:22:37,802 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 23:22:37,802 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 23:22:37,803 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/arctan_Pade.c [2021-12-27 23:22:37,849 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dd495d80/1bc9523461c145baa0a69e93992180a1/FLAG0727b34e0 [2021-12-27 23:22:38,201 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 23:22:38,202 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/arctan_Pade.c [2021-12-27 23:22:38,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dd495d80/1bc9523461c145baa0a69e93992180a1/FLAG0727b34e0 [2021-12-27 23:22:38,652 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1dd495d80/1bc9523461c145baa0a69e93992180a1 [2021-12-27 23:22:38,653 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 23:22:38,654 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 23:22:38,655 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 23:22:38,655 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 23:22:38,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 23:22:38,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:22:38" (1/1) ... [2021-12-27 23:22:38,659 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@645d2568 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:38, skipping insertion in model container [2021-12-27 23:22:38,659 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:22:38" (1/1) ... [2021-12-27 23:22:38,663 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 23:22:38,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 23:22:38,827 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/float-benchs/arctan_Pade.c[665,678] [2021-12-27 23:22:38,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:22:38,850 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 23:22:38,859 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/float-benchs/arctan_Pade.c[665,678] [2021-12-27 23:22:38,868 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:22:38,879 INFO L208 MainTranslator]: Completed translation [2021-12-27 23:22:38,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:38 WrapperNode [2021-12-27 23:22:38,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 23:22:38,881 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 23:22:38,881 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 23:22:38,881 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 23:22:38,885 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:38" (1/1) ... [2021-12-27 23:22:38,921 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:38" (1/1) ... [2021-12-27 23:22:38,937 INFO L137 Inliner]: procedures = 18, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 50 [2021-12-27 23:22:38,937 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 23:22:38,938 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 23:22:38,938 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 23:22:38,938 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 23:22:38,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:38" (1/1) ... [2021-12-27 23:22:38,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:38" (1/1) ... [2021-12-27 23:22:38,950 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:38" (1/1) ... [2021-12-27 23:22:38,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:38" (1/1) ... [2021-12-27 23:22:38,959 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:38" (1/1) ... [2021-12-27 23:22:38,961 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:38" (1/1) ... [2021-12-27 23:22:38,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:38" (1/1) ... [2021-12-27 23:22:38,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 23:22:38,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 23:22:38,968 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 23:22:38,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 23:22:38,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:38" (1/1) ... [2021-12-27 23:22:38,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:22:38,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:22:39,000 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) [2021-12-27 23:22:39,033 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 [2021-12-27 23:22:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 23:22:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2021-12-27 23:22:39,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2021-12-27 23:22:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-27 23:22:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 23:22:39,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 23:22:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2021-12-27 23:22:39,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2021-12-27 23:22:39,085 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 23:22:39,086 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 23:22:39,166 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 23:22:39,170 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 23:22:39,170 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-27 23:22:39,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:22:39 BoogieIcfgContainer [2021-12-27 23:22:39,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 23:22:39,172 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 23:22:39,172 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 23:22:39,174 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 23:22:39,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:22:38" (1/3) ... [2021-12-27 23:22:39,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b5871b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:22:39, skipping insertion in model container [2021-12-27 23:22:39,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:38" (2/3) ... [2021-12-27 23:22:39,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b5871b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:22:39, skipping insertion in model container [2021-12-27 23:22:39,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:22:39" (3/3) ... [2021-12-27 23:22:39,176 INFO L111 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2021-12-27 23:22:39,181 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 23:22:39,182 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 23:22:39,210 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 23:22:39,215 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 [2021-12-27 23:22:39,215 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 23:22:39,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-12-27 23:22:39,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-27 23:22:39,229 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:22:39,229 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:22:39,230 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:22:39,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:22:39,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1224452808, now seen corresponding path program 1 times [2021-12-27 23:22:39,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:22:39,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956994093] [2021-12-27 23:22:39,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:22:39,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:22:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:22:39,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-27 23:22:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:22:39,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-27 23:22:39,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:22:39,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:22:39,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-27 23:22:39,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956994093] [2021-12-27 23:22:39,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956994093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:22:39,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:22:39,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-27 23:22:39,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044285861] [2021-12-27 23:22:39,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:22:39,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-27 23:22:39,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-27 23:22:39,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-27 23:22:39,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:22:39,457 INFO L87 Difference]: Start difference. First operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-27 23:22:39,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:22:39,468 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2021-12-27 23:22:39,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-27 23:22:39,473 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 20 [2021-12-27 23:22:39,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:22:39,477 INFO L225 Difference]: With dead ends: 55 [2021-12-27 23:22:39,489 INFO L226 Difference]: Without dead ends: 25 [2021-12-27 23:22:39,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:22:39,494 INFO L933 BasicCegarLoop]: 32 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, 32 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 [2021-12-27 23:22:39,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 23:22:39,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-27 23:22:39,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-27 23:22:39,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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) [2021-12-27 23:22:39,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-12-27 23:22:39,522 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2021-12-27 23:22:39,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:22:39,522 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-12-27 23:22:39,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-27 23:22:39,523 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-12-27 23:22:39,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-27 23:22:39,524 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:22:39,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:22:39,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-27 23:22:39,525 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:22:39,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:22:39,527 INFO L85 PathProgramCache]: Analyzing trace with hash -769691898, now seen corresponding path program 1 times [2021-12-27 23:22:39,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-27 23:22:39,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742168545] [2021-12-27 23:22:39,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:22:39,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-27 23:22:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 23:22:39,565 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-27 23:22:39,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-27 23:22:39,600 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-27 23:22:39,600 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-27 23:22:39,602 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-27 23:22:39,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-27 23:22:39,608 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2021-12-27 23:22:39,611 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-27 23:22:39,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.12 11:22:39 BoogieIcfgContainer [2021-12-27 23:22:39,637 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-27 23:22:39,638 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-27 23:22:39,642 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-27 23:22:39,642 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-27 23:22:39,643 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:22:39" (3/4) ... [2021-12-27 23:22:39,645 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-27 23:22:39,645 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-27 23:22:39,647 INFO L158 Benchmark]: Toolchain (without parser) took 991.46ms. Allocated memory was 50.3MB in the beginning and 67.1MB in the end (delta: 16.8MB). Free memory was 27.6MB in the beginning and 49.5MB in the end (delta: -21.9MB). Peak memory consumption was 13.6MB. Max. memory is 16.1GB. [2021-12-27 23:22:39,647 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 50.3MB. Free memory was 32.7MB in the beginning and 32.7MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-27 23:22:39,647 INFO L158 Benchmark]: CACSL2BoogieTranslator took 224.69ms. Allocated memory is still 50.3MB. Free memory was 27.4MB in the beginning and 29.1MB in the end (delta: -1.6MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-12-27 23:22:39,648 INFO L158 Benchmark]: Boogie Procedure Inliner took 56.79ms. Allocated memory was 50.3MB in the beginning and 67.1MB in the end (delta: 16.8MB). Free memory was 28.9MB in the beginning and 50.8MB in the end (delta: -21.9MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. [2021-12-27 23:22:39,648 INFO L158 Benchmark]: Boogie Preprocessor took 28.62ms. Allocated memory is still 67.1MB. Free memory was 50.8MB in the beginning and 49.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-27 23:22:39,648 INFO L158 Benchmark]: RCFGBuilder took 203.99ms. Allocated memory is still 67.1MB. Free memory was 49.6MB in the beginning and 40.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-27 23:22:39,649 INFO L158 Benchmark]: TraceAbstraction took 465.09ms. Allocated memory is still 67.1MB. Free memory was 39.9MB in the beginning and 31.5MB in the end (delta: 8.4MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-12-27 23:22:39,649 INFO L158 Benchmark]: Witness Printer took 7.33ms. Allocated memory is still 67.1MB. Free memory was 31.5MB in the beginning and 49.5MB in the end (delta: -18.0MB). Peak memory consumption was 2.6MB. Max. memory is 16.1GB. [2021-12-27 23:22:39,654 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 50.3MB. Free memory was 32.7MB in the beginning and 32.7MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 224.69ms. Allocated memory is still 50.3MB. Free memory was 27.4MB in the beginning and 29.1MB in the end (delta: -1.6MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 56.79ms. Allocated memory was 50.3MB in the beginning and 67.1MB in the end (delta: 16.8MB). Free memory was 28.9MB in the beginning and 50.8MB in the end (delta: -21.9MB). Peak memory consumption was 2.3MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.62ms. Allocated memory is still 67.1MB. Free memory was 50.8MB in the beginning and 49.6MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 203.99ms. Allocated memory is still 67.1MB. Free memory was 49.6MB in the beginning and 40.3MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 465.09ms. Allocated memory is still 67.1MB. Free memory was 39.9MB in the beginning and 31.5MB in the end (delta: 8.4MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Witness Printer took 7.33ms. Allocated memory is still 67.1MB. Free memory was 31.5MB in the beginning and 49.5MB in the end (delta: -18.0MB). Peak memory consumption was 2.6MB. 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: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 54, overapproximation of someUnaryDOUBLEoperation at line 41, overapproximation of someBinaryArithmeticDOUBLEoperation at line 35. Possible FailurePath: [L20] const double Pi=3.141592653589793238; VAL [Pi=1570796326794896619/500000000000000000] [L47] double a, r; [L49] a = __VERIFIER_nondet_double() [L50] CALL assume_abort_if_not(a >= -1.79e308 && a <= 1.79e308) [L15] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1, Pi=1570796326794896619/500000000000000000] [L50] RET assume_abort_if_not(a >= -1.79e308 && a <= 1.79e308) [L52] CALL, EXPR ARCTAN(a) [L41] COND TRUE x < 0 VAL [\old(x)=51, Pi=1570796326794896619/500000000000000000, x=51] [L41] CALL, EXPR ARCTAN_POS(-x) VAL [Pi=1570796326794896619/500000000000000000] [L35] COND TRUE x > 1. VAL [\old(x)=54, Pi=1570796326794896619/500000000000000000, x=54] [L35] CALL, EXPR ARCTAN_0_1(1. / x) VAL [Pi=1570796326794896619/500000000000000000] [L30] CALL, EXPR PADE_2_2(x) [L24] double x_2 = x*x; [L25] return 1. - x_2 / (3. + 9./5.*x_2); VAL [\old(x)=52, Pi=1570796326794896619/500000000000000000, x=52] [L30] RET, EXPR PADE_2_2(x) [L30] return x*PADE_2_2(x); [L35] RET, EXPR ARCTAN_0_1(1. / x) VAL [\old(x)=54, ARCTAN_0_1(1. / x)=49, Pi=1570796326794896619/500000000000000000, x=54] [L35] return Pi / 2. - ARCTAN_0_1(1. / x); [L41] RET, EXPR ARCTAN_POS(-x) VAL [\old(x)=51, ARCTAN_POS(-x)=50, Pi=1570796326794896619/500000000000000000, x=51] [L41] return -ARCTAN_POS(-x); [L52] RET, EXPR ARCTAN(a) [L52] r = ARCTAN(a) [L54] CALL __VERIFIER_assert(r >= -1.571 && r <= 1.571) [L17] COND TRUE !(cond) VAL [\old(cond)=0, cond=0, Pi=1570796326794896619/500000000000000000] [L17] reach_error() VAL [\old(cond)=0, cond=0, Pi=1570796326794896619/500000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, 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, 32 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, 32 mSDtfsCounter, 0 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 19 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-27 23:22:39,706 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/float-benchs/arctan_Pade.c -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 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-27 23:22:41,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-27 23:22:41,208 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-27 23:22:41,238 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-27 23:22:41,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-27 23:22:41,241 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-27 23:22:41,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-27 23:22:41,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-27 23:22:41,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-27 23:22:41,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-27 23:22:41,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-27 23:22:41,254 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-27 23:22:41,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-27 23:22:41,256 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-27 23:22:41,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-27 23:22:41,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-27 23:22:41,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-27 23:22:41,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-27 23:22:41,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-27 23:22:41,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-27 23:22:41,267 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-27 23:22:41,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-27 23:22:41,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-27 23:22:41,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-27 23:22:41,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-27 23:22:41,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-27 23:22:41,274 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-27 23:22:41,275 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-27 23:22:41,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-27 23:22:41,276 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-27 23:22:41,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-27 23:22:41,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-27 23:22:41,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-27 23:22:41,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-27 23:22:41,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-27 23:22:41,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-27 23:22:41,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-27 23:22:41,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-27 23:22:41,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-27 23:22:41,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-27 23:22:41,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-27 23:22:41,285 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-12-27 23:22:41,305 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-27 23:22:41,306 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-27 23:22:41,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-27 23:22:41,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-27 23:22:41,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-27 23:22:41,308 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-27 23:22:41,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-27 23:22:41,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-27 23:22:41,309 INFO L138 SettingsManager]: * Use SBE=true [2021-12-27 23:22:41,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-27 23:22:41,310 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-27 23:22:41,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-27 23:22:41,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-27 23:22:41,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-27 23:22:41,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-27 23:22:41,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-27 23:22:41,310 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-27 23:22:41,311 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-27 23:22:41,311 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-27 23:22:41,311 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-27 23:22:41,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-27 23:22:41,311 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-27 23:22:41,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-27 23:22:41,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-27 23:22:41,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-27 23:22:41,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-27 23:22:41,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:22:41,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-27 23:22:41,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-27 23:22:41,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-27 23:22:41,312 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-27 23:22:41,312 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-27 23:22:41,325 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-27 23:22:41,325 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-27 23:22:41,325 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-27 23:22:41,325 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-27 23:22:41,325 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03d4f02c4d6708ec7407dd5809f77bd3b86d46b08411c69d0afecaf50bc68872 [2021-12-27 23:22:41,587 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-27 23:22:41,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-27 23:22:41,612 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-27 23:22:41,613 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-27 23:22:41,614 INFO L275 PluginConnector]: CDTParser initialized [2021-12-27 23:22:41,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/arctan_Pade.c [2021-12-27 23:22:41,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ee94088/e06b4d10484f44d888908f98b7bb8c35/FLAGf74adfce6 [2021-12-27 23:22:42,100 INFO L306 CDTParser]: Found 1 translation units. [2021-12-27 23:22:42,100 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/float-benchs/arctan_Pade.c [2021-12-27 23:22:42,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ee94088/e06b4d10484f44d888908f98b7bb8c35/FLAGf74adfce6 [2021-12-27 23:22:42,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ee94088/e06b4d10484f44d888908f98b7bb8c35 [2021-12-27 23:22:42,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-27 23:22:42,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-27 23:22:42,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-27 23:22:42,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-27 23:22:42,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-27 23:22:42,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:22:42" (1/1) ... [2021-12-27 23:22:42,543 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6055e619 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:42, skipping insertion in model container [2021-12-27 23:22:42,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.12 11:22:42" (1/1) ... [2021-12-27 23:22:42,547 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-27 23:22:42,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-27 23:22:42,672 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/float-benchs/arctan_Pade.c[665,678] [2021-12-27 23:22:42,688 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:22:42,697 INFO L203 MainTranslator]: Completed pre-run [2021-12-27 23:22:42,706 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/float-benchs/arctan_Pade.c[665,678] [2021-12-27 23:22:42,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-27 23:22:42,730 INFO L208 MainTranslator]: Completed translation [2021-12-27 23:22:42,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:42 WrapperNode [2021-12-27 23:22:42,731 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-27 23:22:42,731 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-27 23:22:42,731 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-27 23:22:42,732 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-27 23:22:42,736 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:42" (1/1) ... [2021-12-27 23:22:42,753 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:42" (1/1) ... [2021-12-27 23:22:42,774 INFO L137 Inliner]: procedures = 19, calls = 15, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 51 [2021-12-27 23:22:42,774 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-27 23:22:42,775 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-27 23:22:42,775 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-27 23:22:42,775 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-27 23:22:42,780 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:42" (1/1) ... [2021-12-27 23:22:42,781 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:42" (1/1) ... [2021-12-27 23:22:42,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:42" (1/1) ... [2021-12-27 23:22:42,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:42" (1/1) ... [2021-12-27 23:22:42,798 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:42" (1/1) ... [2021-12-27 23:22:42,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:42" (1/1) ... [2021-12-27 23:22:42,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:42" (1/1) ... [2021-12-27 23:22:42,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-27 23:22:42,808 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-27 23:22:42,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-27 23:22:42,809 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-27 23:22:42,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:42" (1/1) ... [2021-12-27 23:22:42,814 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-27 23:22:42,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-27 23:22:42,861 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) [2021-12-27 23:22:42,907 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 [2021-12-27 23:22:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-27 23:22:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-27 23:22:42,934 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_POS [2021-12-27 23:22:42,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_POS [2021-12-27 23:22:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-27 23:22:42,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-27 23:22:42,935 INFO L130 BoogieDeclarations]: Found specification of procedure ARCTAN_0_1 [2021-12-27 23:22:42,935 INFO L138 BoogieDeclarations]: Found implementation of procedure ARCTAN_0_1 [2021-12-27 23:22:42,987 INFO L234 CfgBuilder]: Building ICFG [2021-12-27 23:22:42,988 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-27 23:22:47,648 INFO L275 CfgBuilder]: Performing block encoding [2021-12-27 23:22:47,652 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-27 23:22:47,653 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-27 23:22:47,654 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:22:47 BoogieIcfgContainer [2021-12-27 23:22:47,654 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-27 23:22:47,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-27 23:22:47,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-27 23:22:47,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-27 23:22:47,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.12 11:22:42" (1/3) ... [2021-12-27 23:22:47,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21814c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:22:47, skipping insertion in model container [2021-12-27 23:22:47,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.12 11:22:42" (2/3) ... [2021-12-27 23:22:47,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21814c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.12 11:22:47, skipping insertion in model container [2021-12-27 23:22:47,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.12 11:22:47" (3/3) ... [2021-12-27 23:22:47,659 INFO L111 eAbstractionObserver]: Analyzing ICFG arctan_Pade.c [2021-12-27 23:22:47,662 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-27 23:22:47,662 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-27 23:22:47,704 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-27 23:22:47,713 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 [2021-12-27 23:22:47,714 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-27 23:22:47,733 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 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) [2021-12-27 23:22:47,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-27 23:22:47,737 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:22:47,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:22:47,738 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:22:47,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:22:47,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1224452808, now seen corresponding path program 1 times [2021-12-27 23:22:47,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:22:47,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [692766350] [2021-12-27 23:22:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:22:47,752 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:22:47,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:22:47,754 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) [2021-12-27 23:22:47,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-27 23:22:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:22:49,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-27 23:22:49,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:22:49,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-27 23:22:49,985 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-27 23:22:49,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-27 23:22:49,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [692766350] [2021-12-27 23:22:49,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [692766350] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-27 23:22:49,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-27 23:22:49,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-27 23:22:49,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887314241] [2021-12-27 23:22:49,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-27 23:22:49,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-27 23:22:49,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-27 23:22:50,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-27 23:22:50,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:22:50,010 INFO L87 Difference]: Start difference. First operand has 29 states, 21 states have (on average 1.2380952380952381) internal successors, (26), 22 states have internal predecessors, (26), 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 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-27 23:22:50,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-27 23:22:50,023 INFO L93 Difference]: Finished difference Result 55 states and 64 transitions. [2021-12-27 23:22:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-27 23:22:50,024 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 20 [2021-12-27 23:22:50,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-27 23:22:50,029 INFO L225 Difference]: With dead ends: 55 [2021-12-27 23:22:50,030 INFO L226 Difference]: Without dead ends: 25 [2021-12-27 23:22:50,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-27 23:22:50,035 INFO L933 BasicCegarLoop]: 32 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, 32 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 [2021-12-27 23:22:50,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-27 23:22:50,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-27 23:22:50,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-27 23:22:50,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 18 states have internal predecessors, (20), 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) [2021-12-27 23:22:50,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2021-12-27 23:22:50,072 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2021-12-27 23:22:50,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-27 23:22:50,072 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2021-12-27 23:22:50,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.0) internal successors, (16), 2 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-27 23:22:50,073 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2021-12-27 23:22:50,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-27 23:22:50,075 INFO L506 BasicCegarLoop]: Found error trace [2021-12-27 23:22:50,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-27 23:22:50,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-27 23:22:50,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-27 23:22:50,304 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-27 23:22:50,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-27 23:22:50,304 INFO L85 PathProgramCache]: Analyzing trace with hash -769691898, now seen corresponding path program 1 times [2021-12-27 23:22:50,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-27 23:22:50,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1324397440] [2021-12-27 23:22:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-27 23:22:50,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-27 23:22:50,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-27 23:22:50,312 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) [2021-12-27 23:22:50,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-27 23:23:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-27 23:23:01,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 18 conjunts are in the unsatisfiable core [2021-12-27 23:23:01,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-27 23:23:23,512 WARN L838 $PredicateComparison]: unable to prove that (and (= c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0))) (= (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) (let ((.cse0 (fp.mul c_currentRoundingMode |c_ARCTAN_0_1_~x#1| |c_ARCTAN_0_1_~x#1|))) (fp.div c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse0))))) |c_ARCTAN_0_1_PADE_2_2_#res#1|) (= |c_ARCTAN_0_1_#in~x#1| |c_ARCTAN_0_1_~x#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-12-27 23:23:25,731 WARN L860 $PredicateComparison]: unable to prove that (and (= c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0))) (= (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) (let ((.cse0 (fp.mul c_currentRoundingMode |c_ARCTAN_0_1_~x#1| |c_ARCTAN_0_1_~x#1|))) (fp.div c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse0))))) |c_ARCTAN_0_1_PADE_2_2_#res#1|) (= |c_ARCTAN_0_1_#in~x#1| |c_ARCTAN_0_1_~x#1|) (= c_currentRoundingMode roundNearestTiesToEven)) is different from true [2021-12-27 23:23:30,824 WARN L228 SmtUtils]: Spent 5.09s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-27 23:23:40,622 WARN L228 SmtUtils]: Spent 5.13s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-27 23:23:42,948 WARN L838 $PredicateComparison]: unable to prove that (and (= c_~Pi~0 ((_ to_fp 11 53) c_currentRoundingMode (/ 1570796326794896619.0 500000000000000000.0))) (= |c_ARCTAN_0_1_#res#1| (fp.mul c_currentRoundingMode |c_ARCTAN_0_1_#in~x#1| (fp.sub c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 1.0) (let ((.cse0 (fp.mul c_currentRoundingMode |c_ARCTAN_0_1_#in~x#1| |c_ARCTAN_0_1_#in~x#1|))) (fp.div c_currentRoundingMode .cse0 (fp.add c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 3.0) (fp.mul c_currentRoundingMode (fp.div c_currentRoundingMode ((_ to_fp 11 53) c_currentRoundingMode 9.0) ((_ to_fp 11 53) c_currentRoundingMode 5.0)) .cse0))))))) (= c_currentRoundingMode roundNearestTiesToEven)) is different from false [2021-12-27 23:23:48,043 WARN L228 SmtUtils]: Spent 5.06s on a formula simplification that was a NOOP. DAG size: 5 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2021-12-27 23:23:57,867 WARN L228 SmtUtils]: Spent 5.12s on a formula simplification that was a NOOP. DAG size: 3 (called from [L1067] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)