/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_1121a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:06:59,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:06:59,579 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:06:59,640 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:06:59,641 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:06:59,646 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:06:59,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:06:59,657 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:06:59,661 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:06:59,667 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:06:59,672 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:06:59,674 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:06:59,674 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:06:59,678 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:06:59,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:06:59,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:06:59,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:06:59,688 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:06:59,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:06:59,706 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:06:59,708 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:06:59,711 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:06:59,713 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:06:59,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:06:59,734 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:06:59,739 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:06:59,740 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:06:59,741 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:06:59,742 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:06:59,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:06:59,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:06:59,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:06:59,745 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:06:59,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:06:59,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:06:59,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:06:59,748 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 16:06:59,775 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:06:59,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:06:59,777 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:06:59,777 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:06:59,778 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:06:59,778 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:06:59,778 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:06:59,778 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:06:59,779 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:06:59,779 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:06:59,779 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:06:59,779 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:06:59,780 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:06:59,780 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:06:59,780 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:06:59,780 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:06:59,780 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:06:59,781 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:06:59,781 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:06:59,781 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:06:59,781 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:06:59,782 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:06:59,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:06:59,782 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:06:59,782 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:06:59,783 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:07:00,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:07:00,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:07:00,183 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:07:00,185 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:07:00,185 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:07:00,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1121a.c [2021-01-06 16:07:00,265 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ce01fffa7/c5bde0f71dc447e3afffa33fdb517988/FLAG35b12ee48 [2021-01-06 16:07:00,956 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:07:00,957 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1121a.c [2021-01-06 16:07:00,965 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ce01fffa7/c5bde0f71dc447e3afffa33fdb517988/FLAG35b12ee48 [2021-01-06 16:07:01,294 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/ce01fffa7/c5bde0f71dc447e3afffa33fdb517988 [2021-01-06 16:07:01,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:07:01,307 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:07:01,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:07:01,312 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:07:01,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:07:01,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:07:01" (1/1) ... [2021-01-06 16:07:01,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c91f441 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:01, skipping insertion in model container [2021-01-06 16:07:01,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:07:01" (1/1) ... [2021-01-06 16:07:01,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:07:01,365 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[~hx~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~1,],value] left hand side expression in assignment: lhs: VariableLHS[~hy~0,] left hand side expression in assignment: lhs: VariableLHS[~sx~0,] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~ix~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~ix~0,] left hand side expression in assignment: lhs: VariableLHS[~iy~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~iy~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] left hand side expression in assignment: lhs: VariableLHS[~hy~0,] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~hy~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~hz~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] left hand side expression in assignment: lhs: VariableLHS[~hz~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~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: VariableLHS[~n~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~sf_u~1,],word] left hand side expression in assignment: lhs: VariableLHS[~x,] [2021-01-06 16:07:01,569 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_1121a.c[2701,2714] [2021-01-06 16:07:01,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:07:01,582 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[~hx~0,] 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[~hy~0,] left hand side expression in assignment: lhs: VariableLHS[~sx~0,] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~ix~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~ix~0,] left hand side expression in assignment: lhs: VariableLHS[~iy~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~iy~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] left hand side expression in assignment: lhs: VariableLHS[~hy~0,] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~hy~0,] left hand side expression in assignment: lhs: VariableLHS[~n~0,] left hand side expression in assignment: lhs: VariableLHS[~hz~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] left hand side expression in assignment: lhs: VariableLHS[~hz~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~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: lhs: VariableLHS[~n~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sf_u~1,],base],StructAccessExpression[IdentifierExpression[~#sf_u~1,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~x,] [2021-01-06 16:07:01,627 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_1121a.c[2701,2714] [2021-01-06 16:07:01,627 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:07:01,646 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:07:01,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:01 WrapperNode [2021-01-06 16:07:01,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:07:01,647 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:07:01,648 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:07:01,648 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:07:01,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:01" (1/1) ... [2021-01-06 16:07:01,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:01" (1/1) ... [2021-01-06 16:07:01,705 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:07:01,706 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:07:01,706 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:07:01,706 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:07:01,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:01" (1/1) ... [2021-01-06 16:07:01,718 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:01" (1/1) ... [2021-01-06 16:07:01,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:01" (1/1) ... [2021-01-06 16:07:01,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:01" (1/1) ... [2021-01-06 16:07:01,735 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:01" (1/1) ... [2021-01-06 16:07:01,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:01" (1/1) ... [2021-01-06 16:07:01,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:01" (1/1) ... [2021-01-06 16:07:01,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:07:01,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:07:01,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:07:01,752 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:07:01,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:01" (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 16:07:01,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:07:01,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:07:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:07:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-01-06 16:07:01,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:07:01,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:07:01,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:07:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:07:01,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-01-06 16:07:01,873 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:07:02,496 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:07:02,497 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-01-06 16:07:02,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:07:02 BoogieIcfgContainer [2021-01-06 16:07:02,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:07:02,501 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:07:02,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:07:02,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:07:02,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:07:01" (1/3) ... [2021-01-06 16:07:02,506 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2abb55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:07:02, skipping insertion in model container [2021-01-06 16:07:02,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:07:01" (2/3) ... [2021-01-06 16:07:02,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d2abb55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:07:02, skipping insertion in model container [2021-01-06 16:07:02,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:07:02" (3/3) ... [2021-01-06 16:07:02,508 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1121a.c [2021-01-06 16:07:02,515 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:07:02,520 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:07:02,540 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:07:02,568 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:07:02,569 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:07:02,569 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:07:02,569 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:07:02,569 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:07:02,569 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:07:02,569 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:07:02,569 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:07:02,585 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2021-01-06 16:07:02,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 16:07:02,592 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:02,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:02,593 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:02,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:02,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1366069876, now seen corresponding path program 1 times [2021-01-06 16:07:02,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:02,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254482038] [2021-01-06 16:07:02,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:07:02,794 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 16:07:02,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254482038] [2021-01-06 16:07:02,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:07:02,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:07:02,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438533734] [2021-01-06 16:07:02,805 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:07:02,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:07:02,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:07:02,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:07:02,856 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 2 states. [2021-01-06 16:07:02,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:07:02,909 INFO L93 Difference]: Finished difference Result 106 states and 186 transitions. [2021-01-06 16:07:02,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:07:02,911 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2021-01-06 16:07:02,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:07:02,933 INFO L225 Difference]: With dead ends: 106 [2021-01-06 16:07:02,934 INFO L226 Difference]: Without dead ends: 51 [2021-01-06 16:07:02,937 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 16:07:02,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-01-06 16:07:02,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2021-01-06 16:07:02,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-06 16:07:02,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2021-01-06 16:07:02,997 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 11 [2021-01-06 16:07:02,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:07:02,998 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2021-01-06 16:07:02,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:07:02,999 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2021-01-06 16:07:03,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 16:07:03,000 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:07:03,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:07:03,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:07:03,001 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:07:03,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:07:03,003 INFO L82 PathProgramCache]: Analyzing trace with hash 1947332695, now seen corresponding path program 1 times [2021-01-06 16:07:03,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:07:03,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301585922] [2021-01-06 16:07:03,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:07:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:07:03,160 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:07:03,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:07:03,207 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:07:03,240 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:07:03,240 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:07:03,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:07:03,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:07:03 BoogieIcfgContainer [2021-01-06 16:07:03,284 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:07:03,285 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:07:03,285 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:07:03,285 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:07:03,286 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:07:02" (3/4) ... [2021-01-06 16:07:03,291 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:07:03,291 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:07:03,294 INFO L168 Benchmark]: Toolchain (without parser) took 1987.08 ms. Allocated memory is still 160.4 MB. Free memory was 135.3 MB in the beginning and 127.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 8.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:03,295 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 160.4 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:07:03,296 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.86 ms. Allocated memory is still 160.4 MB. Free memory was 135.3 MB in the beginning and 123.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:03,297 INFO L168 Benchmark]: Boogie Procedure Inliner took 57.83 ms. Allocated memory is still 160.4 MB. Free memory was 123.1 MB in the beginning and 121.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:03,297 INFO L168 Benchmark]: Boogie Preprocessor took 44.89 ms. Allocated memory is still 160.4 MB. Free memory was 121.0 MB in the beginning and 118.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:03,298 INFO L168 Benchmark]: RCFGBuilder took 747.55 ms. Allocated memory is still 160.4 MB. Free memory was 118.9 MB in the beginning and 91.2 MB in the end (delta: 27.7 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2021-01-06 16:07:03,299 INFO L168 Benchmark]: TraceAbstraction took 783.52 ms. Allocated memory is still 160.4 MB. Free memory was 90.9 MB in the beginning and 127.5 MB in the end (delta: -36.6 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:07:03,300 INFO L168 Benchmark]: Witness Printer took 6.21 ms. Allocated memory is still 160.4 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:07:03,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 160.4 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 334.86 ms. Allocated memory is still 160.4 MB. Free memory was 135.3 MB in the beginning and 123.1 MB in the end (delta: 12.2 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 57.83 ms. Allocated memory is still 160.4 MB. Free memory was 123.1 MB in the beginning and 121.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.89 ms. Allocated memory is still 160.4 MB. Free memory was 121.0 MB in the beginning and 118.9 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 747.55 ms. Allocated memory is still 160.4 MB. Free memory was 118.9 MB in the beginning and 91.2 MB in the end (delta: 27.7 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 783.52 ms. Allocated memory is still 160.4 MB. Free memory was 90.9 MB in the beginning and 127.5 MB in the end (delta: -36.6 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 6.21 ms. Allocated memory is still 160.4 MB. Free memory is still 127.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 125]: 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 110, overapproximation of someUnaryDOUBLEoperation at line 16, overapproximation of bitwiseAnd at line 34, overapproximation of bitwiseXOr at line 33, overapproximation of someBinaryArithmeticFLOAToperation at line 37. Possible FailurePath: [L14-L17] static const float one_fmod = 1.0, Zero_fmod[] = { 0.0, -0.0, }; VAL [one_fmod=1, Zero_fmod={9:0}] [L118] float x = __VERIFIER_nondet_float(); [L119] float y = 0.0f; [L20] __int32_t n, hx, hy, hz, ix, iy, sx, i; VAL [one_fmod=1, Zero_fmod={9:0}] [L23] ieee_float_shape_type gf_u; [L24] gf_u.value = (x) [L25] EXPR gf_u.word [L25] (hx) = gf_u.word [L28] ieee_float_shape_type gf_u; [L29] gf_u.value = (y) [L30] EXPR gf_u.word [L30] (hy) = gf_u.word [L32] sx = hx & 0x80000000 VAL [one_fmod=1, Zero_fmod={9:0}] [L33] hx ^= sx [L34] hy &= 0x7fffffff VAL [one_fmod=1, Zero_fmod={9:0}] [L36] COND TRUE ((hy) == 0) || !((hx) < 0x7f800000L) || ((hy) > 0x7f800000L) [L37] return (x * y) / (x * y); VAL [one_fmod=1, Zero_fmod={9:0}] [L121] float res = fmod_float(x, y); [L110] return x != x; VAL [one_fmod=1, Zero_fmod={9:0}] [L124] COND TRUE !isnan_float(res) [L125] reach_error() VAL [one_fmod=1, Zero_fmod={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 73 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 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 Received shutdown request...