/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/float-newlib/float_req_bl_0621a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:06:18,396 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:06:18,399 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:06:18,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:06:18,435 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:06:18,437 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:06:18,438 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:06:18,441 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:06:18,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:06:18,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:06:18,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:06:18,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:06:18,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:06:18,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:06:18,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:06:18,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:06:18,452 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:06:18,453 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:06:18,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:06:18,458 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:06:18,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:06:18,461 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:06:18,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:06:18,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:06:18,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:06:18,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:06:18,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:06:18,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:06:18,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:06:18,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:06:18,479 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:06:18,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:06:18,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:06:18,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:06:18,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:06:18,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:06:18,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:06:18,542 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:06:18,542 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:06:18,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:06:18,547 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:06:18,547 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:06:18,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:06:18,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:06:18,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:06:18,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:06:18,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:06:18,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:06:18,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:06:18,551 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:06:18,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:06:18,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:06:18,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:06:18,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:06:18,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:06:18,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:06:18,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:06:18,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:06:18,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:06:18,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:06:18,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:06:18,554 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:06:18,554 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:06:18,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:06:19,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:06:19,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:06:19,013 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:06:19,014 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:06:19,015 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0621a.c [2021-01-06 16:06:19,109 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f2bfd0463/baf03fa9008042eb9d903047a1eb465e/FLAG2f7c6fe98 [2021-01-06 16:06:19,720 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:06:19,721 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0621a.c [2021-01-06 16:06:19,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f2bfd0463/baf03fa9008042eb9d903047a1eb465e/FLAG2f7c6fe98 [2021-01-06 16:06:20,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/f2bfd0463/baf03fa9008042eb9d903047a1eb465e [2021-01-06 16:06:20,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:06:20,102 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:06:20,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:06:20,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:06:20,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:06:20,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:06:20" (1/1) ... [2021-01-06 16:06:20,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@195fc172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:20, skipping insertion in model container [2021-01-06 16:06:20,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:06:20" (1/1) ... [2021-01-06 16:06:20,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:06:20,166 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~0,],value] left hand side expression in assignment: lhs: VariableLHS[~ix~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~sf_u~0,],word] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~1,],value] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] left hand side expression in assignment: lhs: VariableLHS[~ix~1,] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~id~0,] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: VariableLHS[~id~0,] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: VariableLHS[~id~0,] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: VariableLHS[~id~0,] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: VariableLHS[~id~0,] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~w~0,] left hand side expression in assignment: lhs: VariableLHS[~s1~0,] left hand side expression in assignment: lhs: VariableLHS[~s2~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2021-01-06 16:06:20,431 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0621a.c[3196,3209] [2021-01-06 16:06:20,435 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:06:20,447 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#gf_u~0,],base],StructAccessExpression[IdentifierExpression[~#gf_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~ix~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sf_u~0,],base],StructAccessExpression[IdentifierExpression[~#sf_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#gf_u~1,],base],StructAccessExpression[IdentifierExpression[~#gf_u~1,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] left hand side expression in assignment: lhs: VariableLHS[~ix~1,] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~id~0,] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: VariableLHS[~id~0,] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: VariableLHS[~id~0,] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: VariableLHS[~id~0,] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: VariableLHS[~id~0,] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] left hand side expression in assignment: lhs: VariableLHS[~w~0,] left hand side expression in assignment: lhs: VariableLHS[~s1~0,] left hand side expression in assignment: lhs: VariableLHS[~s2~0,] left hand side expression in assignment: lhs: VariableLHS[~z~0,] [2021-01-06 16:06:20,491 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0621a.c[3196,3209] [2021-01-06 16:06:20,492 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:06:20,516 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:06:20,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:20 WrapperNode [2021-01-06 16:06:20,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:06:20,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:06:20,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:06:20,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:06:20,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:20" (1/1) ... [2021-01-06 16:06:20,540 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:20" (1/1) ... [2021-01-06 16:06:20,580 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:06:20,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:06:20,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:06:20,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:06:20,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:20" (1/1) ... [2021-01-06 16:06:20,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:20" (1/1) ... [2021-01-06 16:06:20,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:20" (1/1) ... [2021-01-06 16:06:20,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:20" (1/1) ... [2021-01-06 16:06:20,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:20" (1/1) ... [2021-01-06 16:06:20,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:20" (1/1) ... [2021-01-06 16:06:20,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:20" (1/1) ... [2021-01-06 16:06:20,637 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:06:20,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:06:20,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:06:20,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:06:20,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:06:20,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:06:20,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:06:20,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-01-06 16:06:20,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:06:20,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:06:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:06:20,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:06:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:06:20,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-01-06 16:06:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:06:21,423 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:06:21,426 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2021-01-06 16:06:21,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:21 BoogieIcfgContainer [2021-01-06 16:06:21,429 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:06:21,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:06:21,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:06:21,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:06:21,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:06:20" (1/3) ... [2021-01-06 16:06:21,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcefcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:06:21, skipping insertion in model container [2021-01-06 16:06:21,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:20" (2/3) ... [2021-01-06 16:06:21,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dcefcdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:06:21, skipping insertion in model container [2021-01-06 16:06:21,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:21" (3/3) ... [2021-01-06 16:06:21,444 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0621a.c [2021-01-06 16:06:21,452 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:06:21,457 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:06:21,477 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:06:21,519 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:06:21,519 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:06:21,519 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:06:21,520 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:06:21,520 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:06:21,520 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:06:21,520 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:06:21,520 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:06:21,537 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-01-06 16:06:21,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 16:06:21,544 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:21,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:21,546 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:21,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:21,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1830079148, now seen corresponding path program 1 times [2021-01-06 16:06:21,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:21,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282947563] [2021-01-06 16:06:21,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:21,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:21,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:06:21,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282947563] [2021-01-06 16:06:21,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:21,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:06:21,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855976317] [2021-01-06 16:06:21,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:06:21,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:21,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:06:21,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:06:21,824 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 2 states. [2021-01-06 16:06:21,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:21,853 INFO L93 Difference]: Finished difference Result 68 states and 110 transitions. [2021-01-06 16:06:21,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:06:21,854 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-01-06 16:06:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:21,868 INFO L225 Difference]: With dead ends: 68 [2021-01-06 16:06:21,868 INFO L226 Difference]: Without dead ends: 32 [2021-01-06 16:06:21,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:06:21,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-01-06 16:06:21,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-01-06 16:06:21,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-01-06 16:06:21,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 44 transitions. [2021-01-06 16:06:21,920 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 44 transitions. Word has length 9 [2021-01-06 16:06:21,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:21,922 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 44 transitions. [2021-01-06 16:06:21,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:06:21,922 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 44 transitions. [2021-01-06 16:06:21,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 16:06:21,923 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:21,923 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:21,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:06:21,924 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:21,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:21,926 INFO L82 PathProgramCache]: Analyzing trace with hash 1558271665, now seen corresponding path program 1 times [2021-01-06 16:06:21,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:21,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4512537] [2021-01-06 16:06:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-01-06 16:06:22,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4512537] [2021-01-06 16:06:22,058 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:22,058 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:06:22,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285430533] [2021-01-06 16:06:22,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:06:22,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:22,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:06:22,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:06:22,062 INFO L87 Difference]: Start difference. First operand 32 states and 44 transitions. Second operand 3 states. [2021-01-06 16:06:22,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:22,111 INFO L93 Difference]: Finished difference Result 65 states and 88 transitions. [2021-01-06 16:06:22,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:06:22,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-01-06 16:06:22,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:22,113 INFO L225 Difference]: With dead ends: 65 [2021-01-06 16:06:22,113 INFO L226 Difference]: Without dead ends: 45 [2021-01-06 16:06:22,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:06:22,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-01-06 16:06:22,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 35. [2021-01-06 16:06:22,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-01-06 16:06:22,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 47 transitions. [2021-01-06 16:06:22,121 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 47 transitions. Word has length 10 [2021-01-06 16:06:22,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:22,122 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 47 transitions. [2021-01-06 16:06:22,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:06:22,122 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 47 transitions. [2021-01-06 16:06:22,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 16:06:22,123 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:22,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:22,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:06:22,123 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:22,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:22,124 INFO L82 PathProgramCache]: Analyzing trace with hash 893364878, now seen corresponding path program 1 times [2021-01-06 16:06:22,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:22,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877652649] [2021-01-06 16:06:22,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:22,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:22,185 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:22,227 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:22,258 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:06:22,258 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:06:22,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:06:22,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:06:22 BoogieIcfgContainer [2021-01-06 16:06:22,304 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:06:22,305 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:06:22,305 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:06:22,305 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:06:22,306 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:21" (3/4) ... [2021-01-06 16:06:22,310 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:06:22,310 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:06:22,312 INFO L168 Benchmark]: Toolchain (without parser) took 2209.59 ms. Allocated memory is still 155.2 MB. Free memory was 129.5 MB in the beginning and 93.9 MB in the end (delta: 35.6 MB). Peak memory consumption was 36.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:22,313 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 80.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:22,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.59 ms. Allocated memory is still 155.2 MB. Free memory was 129.3 MB in the beginning and 117.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:22,315 INFO L168 Benchmark]: Boogie Procedure Inliner took 61.98 ms. Allocated memory is still 155.2 MB. Free memory was 117.1 MB in the beginning and 115.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:22,315 INFO L168 Benchmark]: Boogie Preprocessor took 56.39 ms. Allocated memory is still 155.2 MB. Free memory was 115.0 MB in the beginning and 113.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:22,316 INFO L168 Benchmark]: RCFGBuilder took 790.96 ms. Allocated memory is still 155.2 MB. Free memory was 113.1 MB in the beginning and 133.2 MB in the end (delta: -20.1 MB). Peak memory consumption was 27.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:22,317 INFO L168 Benchmark]: TraceAbstraction took 870.28 ms. Allocated memory is still 155.2 MB. Free memory was 132.7 MB in the beginning and 94.4 MB in the end (delta: 38.3 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:22,318 INFO L168 Benchmark]: Witness Printer took 5.28 ms. Allocated memory is still 155.2 MB. Free memory is still 93.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:22,325 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 80.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 412.59 ms. Allocated memory is still 155.2 MB. Free memory was 129.3 MB in the beginning and 117.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 61.98 ms. Allocated memory is still 155.2 MB. Free memory was 117.1 MB in the beginning and 115.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.39 ms. Allocated memory is still 155.2 MB. Free memory was 115.0 MB in the beginning and 113.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 790.96 ms. Allocated memory is still 155.2 MB. Free memory was 113.1 MB in the beginning and 133.2 MB in the end (delta: -20.1 MB). Peak memory consumption was 27.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 870.28 ms. Allocated memory is still 155.2 MB. Free memory was 132.7 MB in the beginning and 94.4 MB in the end (delta: 38.3 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. * Witness Printer took 5.28 ms. Allocated memory is still 155.2 MB. Free memory is still 93.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 133]: 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 132, overapproximation of someUnaryDOUBLEoperation at line 49, overapproximation of someBinaryArithmeticFLOAToperation at line 129. Possible FailurePath: [L14] static const float huge_floor = 1.0e30; [L34-L39] static const float atanhi_atan[] = { 4.6364760399e-01, 7.8539812565e-01, 9.8279368877e-01, 1.5707962513e+00, }; [L41-L46] static const float atanlo_atan[] = { 5.0121582440e-09, 3.7748947079e-08, 3.4473217170e-08, 7.5497894159e-08, }; [L48-L52] static const float aT_atan[] = { 3.3333334327e-01, -2.0000000298e-01, 1.4285714924e-01, -1.1111110449e-01, 9.0908870101e-02, -7.6918758452e-02, 6.6610731184e-02, -5.8335702866e-02, 4.9768779427e-02, -3.6531571299e-02, 1.6285819933e-02, }; [L54-L56] static const float one_atan = 1.0, huge_atan = 1.0e30, pi_o_4 = 7.8539818525e-01, pi_o_2 = 1.5707963705e+00, pi = 3.1415927410e+00; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L129] float x = 1.0f / 0.0f; [L59] float w, s1, s2, z; [L60] __int32_t ix, hx, id; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L63] ieee_float_shape_type gf_u; [L64] gf_u.value = (x) [L65] EXPR gf_u.word [L65] (hx) = gf_u.word [L67] ix = hx & 0x7fffffff VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L68] COND FALSE !(ix >= 0x50800000) VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L76] COND TRUE ix < 0x3ee00000 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L77] COND TRUE ix < 0x31000000 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L78] COND TRUE huge_atan + x > one_atan [L79] return x; VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L130] float res = atan_float(x); [L132] COND TRUE res != pi_o_2 VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] [L133] reach_error() VAL [aT_atan={7:0}, atanhi_atan={11:0}, atanlo_atan={10:0}, huge_atan=1000000000000000000000000000000, huge_floor=1000000000000000000000000000000, one_atan=1, pi=3141592741/1000000000, pi_o_2=3141592741/2000000000, pi_o_4=3141592741/4000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 88 SDtfs, 15 SDslu, 26 SDs, 0 SdLazy, 20 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, 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, 2 MinimizatonAttempts, 10 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 163 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 Received shutdown request...