/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_0833.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:06:36,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:06:36,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:06:36,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:06:36,532 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:06:36,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:06:36,535 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:06:36,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:06:36,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:06:36,541 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:06:36,542 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:06:36,543 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:06:36,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:06:36,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:06:36,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:06:36,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:06:36,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:06:36,561 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:06:36,563 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:06:36,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:06:36,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:06:36,569 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:06:36,570 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:06:36,571 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:06:36,574 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:06:36,578 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:06:36,578 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:06:36,579 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:06:36,580 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:06:36,581 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:06:36,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:06:36,582 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:06:36,583 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:06:36,583 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:06:36,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:06:36,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:06:36,587 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 16:06:36,615 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:06:36,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:06:36,617 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:06:36,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:06:36,618 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:06:36,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:06:36,618 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:06:36,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:06:36,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:06:36,619 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:06:36,619 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:06:36,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:06:36,620 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:06:36,620 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:06:36,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:06:36,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:06:36,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:06:36,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:06:36,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:06:36,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:06:36,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:06:36,622 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:06:36,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:06:36,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:06:36,623 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:06:36,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:06:37,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:06:37,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:06:37,063 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:06:37,065 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:06:37,066 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:06:37,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0833.c [2021-01-06 16:06:37,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b55e9b27c/fb9a840002ea45be8f1b0bf0210077c1/FLAG19c908c65 [2021-01-06 16:06:37,742 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:06:37,743 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0833.c [2021-01-06 16:06:37,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b55e9b27c/fb9a840002ea45be8f1b0bf0210077c1/FLAG19c908c65 [2021-01-06 16:06:38,076 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/b55e9b27c/fb9a840002ea45be8f1b0bf0210077c1 [2021-01-06 16:06:38,078 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:06:38,081 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:06:38,083 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:06:38,083 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:06:38,089 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:06:38,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:06:38" (1/1) ... [2021-01-06 16:06:38,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14d7b417 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:38, skipping insertion in model container [2021-01-06 16:06:38,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:06:38" (1/1) ... [2021-01-06 16:06:38,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:06:38,123 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[~sx~0,] left hand side expression in assignment: lhs: VariableLHS[~xsb~0,] ----Is the binary operator a bitwise operator? true 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[~hi~0,] left hand side expression in assignment: lhs: VariableLHS[~lo~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~hi~0,] left hand side expression in assignment: lhs: VariableLHS[~lo~0,] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~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: StructLHS[VariableLHS[~sf_u~0,],word] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~2,],value] left hand side expression in assignment: lhs: VariableLHS[~hy~1,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~sf_u~1,],word] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~3,],value] left hand side expression in assignment: lhs: VariableLHS[~w~0,] [2021-01-06 16:06:38,316 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_0833.c[3348,3361] [2021-01-06 16:06:38,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:06:38,331 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[~sx~0,] left hand side expression in assignment: lhs: VariableLHS[~xsb~0,] ----Is the binary operator a bitwise operator? true 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[~hi~0,] left hand side expression in assignment: lhs: VariableLHS[~lo~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~k~0,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~hi~0,] left hand side expression in assignment: lhs: VariableLHS[~lo~0,] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: VariableLHS[~t~0,] left hand side expression in assignment: lhs: VariableLHS[~c~0,] left hand side expression in assignment: lhs: VariableLHS[~y~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: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#sf_u~0,],base],StructAccessExpression[IdentifierExpression[~#sf_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~y~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#gf_u~2,],base],StructAccessExpression[IdentifierExpression[~#gf_u~2,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~hy~1,] 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[~y~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#gf_u~3,],base],StructAccessExpression[IdentifierExpression[~#gf_u~3,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~w~0,] [2021-01-06 16:06:38,376 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_0833.c[3348,3361] [2021-01-06 16:06:38,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:06:38,408 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:06:38,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:38 WrapperNode [2021-01-06 16:06:38,409 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:06:38,410 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:06:38,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:06:38,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:06:38,421 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:38" (1/1) ... [2021-01-06 16:06:38,446 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:38" (1/1) ... [2021-01-06 16:06:38,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:06:38,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:06:38,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:06:38,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:06:38,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:38" (1/1) ... [2021-01-06 16:06:38,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:38" (1/1) ... [2021-01-06 16:06:38,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:38" (1/1) ... [2021-01-06 16:06:38,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:38" (1/1) ... [2021-01-06 16:06:38,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:38" (1/1) ... [2021-01-06 16:06:38,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:38" (1/1) ... [2021-01-06 16:06:38,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:38" (1/1) ... [2021-01-06 16:06:38,590 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:06:38,592 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:06:38,592 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:06:38,592 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:06:38,593 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:38" (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 16:06:38,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:06:38,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:06:38,714 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:06:38,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-01-06 16:06:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:06:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:06:38,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:06:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:06:38,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-01-06 16:06:38,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:06:39,322 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:06:39,322 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2021-01-06 16:06:39,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:39 BoogieIcfgContainer [2021-01-06 16:06:39,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:06:39,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:06:39,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:06:39,329 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:06:39,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:06:38" (1/3) ... [2021-01-06 16:06:39,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645b510c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:06:39, skipping insertion in model container [2021-01-06 16:06:39,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:38" (2/3) ... [2021-01-06 16:06:39,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@645b510c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:06:39, skipping insertion in model container [2021-01-06 16:06:39,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:39" (3/3) ... [2021-01-06 16:06:39,332 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0833.c [2021-01-06 16:06:39,338 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:06:39,344 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:06:39,364 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:06:39,392 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:06:39,392 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:06:39,392 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:06:39,392 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:06:39,393 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:06:39,393 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:06:39,393 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:06:39,393 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:06:39,408 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states. [2021-01-06 16:06:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 16:06:39,414 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:39,415 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:39,415 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:39,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:39,422 INFO L82 PathProgramCache]: Analyzing trace with hash -879945327, now seen corresponding path program 1 times [2021-01-06 16:06:39,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:39,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335490555] [2021-01-06 16:06:39,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:39,597 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 16:06:39,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335490555] [2021-01-06 16:06:39,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:39,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:06:39,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023108570] [2021-01-06 16:06:39,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:06:39,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:39,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:06:39,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:06:39,622 INFO L87 Difference]: Start difference. First operand 48 states. Second operand 2 states. [2021-01-06 16:06:39,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:39,645 INFO L93 Difference]: Finished difference Result 94 states and 158 transitions. [2021-01-06 16:06:39,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:06:39,647 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-01-06 16:06:39,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:39,658 INFO L225 Difference]: With dead ends: 94 [2021-01-06 16:06:39,658 INFO L226 Difference]: Without dead ends: 45 [2021-01-06 16:06:39,661 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 16:06:39,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-01-06 16:06:39,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-01-06 16:06:39,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-01-06 16:06:39,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 62 transitions. [2021-01-06 16:06:39,700 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 62 transitions. Word has length 10 [2021-01-06 16:06:39,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:39,701 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 62 transitions. [2021-01-06 16:06:39,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:06:39,701 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 62 transitions. [2021-01-06 16:06:39,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-01-06 16:06:39,702 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:39,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:39,703 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:06:39,703 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:39,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:39,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1079714772, now seen corresponding path program 1 times [2021-01-06 16:06:39,704 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:39,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761221535] [2021-01-06 16:06:39,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:39,841 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 16:06:39,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761221535] [2021-01-06 16:06:39,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:39,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:06:39,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689504685] [2021-01-06 16:06:39,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:06:39,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:39,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:06:39,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:06:39,845 INFO L87 Difference]: Start difference. First operand 45 states and 62 transitions. Second operand 3 states. [2021-01-06 16:06:39,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:39,936 INFO L93 Difference]: Finished difference Result 100 states and 130 transitions. [2021-01-06 16:06:39,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:06:39,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2021-01-06 16:06:39,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:39,939 INFO L225 Difference]: With dead ends: 100 [2021-01-06 16:06:39,939 INFO L226 Difference]: Without dead ends: 74 [2021-01-06 16:06:39,940 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 16:06:39,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-01-06 16:06:39,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 51. [2021-01-06 16:06:39,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-01-06 16:06:39,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2021-01-06 16:06:39,950 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 11 [2021-01-06 16:06:39,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:39,950 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2021-01-06 16:06:39,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:06:39,950 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2021-01-06 16:06:39,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 16:06:39,955 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:39,955 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:39,955 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:06:39,956 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:39,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:39,956 INFO L82 PathProgramCache]: Analyzing trace with hash 1499420217, now seen corresponding path program 1 times [2021-01-06 16:06:39,957 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:39,957 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633710110] [2021-01-06 16:06:39,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:40,064 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 16:06:40,065 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633710110] [2021-01-06 16:06:40,065 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:40,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:06:40,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969049113] [2021-01-06 16:06:40,066 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:06:40,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:40,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:06:40,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:06:40,067 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand 3 states. [2021-01-06 16:06:40,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:40,144 INFO L93 Difference]: Finished difference Result 97 states and 128 transitions. [2021-01-06 16:06:40,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:06:40,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2021-01-06 16:06:40,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:40,151 INFO L225 Difference]: With dead ends: 97 [2021-01-06 16:06:40,151 INFO L226 Difference]: Without dead ends: 88 [2021-01-06 16:06:40,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 16:06:40,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-01-06 16:06:40,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 58. [2021-01-06 16:06:40,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-01-06 16:06:40,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 79 transitions. [2021-01-06 16:06:40,169 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 79 transitions. Word has length 13 [2021-01-06 16:06:40,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:40,171 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 79 transitions. [2021-01-06 16:06:40,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:06:40,171 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 79 transitions. [2021-01-06 16:06:40,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-01-06 16:06:40,172 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:40,172 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:40,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:06:40,173 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:40,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:40,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1894275170, now seen corresponding path program 1 times [2021-01-06 16:06:40,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:40,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264114239] [2021-01-06 16:06:40,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:40,272 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:40,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:40,312 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:40,349 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:06:40,350 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:06:40,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 16:06:40,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:06:40 BoogieIcfgContainer [2021-01-06 16:06:40,435 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:06:40,436 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:06:40,436 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:06:40,436 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:06:40,437 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:39" (3/4) ... [2021-01-06 16:06:40,441 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:06:40,441 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:06:40,445 INFO L168 Benchmark]: Toolchain (without parser) took 2362.21 ms. Allocated memory is still 167.8 MB. Free memory was 142.7 MB in the beginning and 84.9 MB in the end (delta: 57.8 MB). Peak memory consumption was 58.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:40,445 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 167.8 MB. Free memory is still 140.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:40,447 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.34 ms. Allocated memory is still 167.8 MB. Free memory was 142.5 MB in the beginning and 130.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:40,449 INFO L168 Benchmark]: Boogie Procedure Inliner took 91.95 ms. Allocated memory is still 167.8 MB. Free memory was 130.0 MB in the beginning and 128.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:40,449 INFO L168 Benchmark]: Boogie Preprocessor took 86.03 ms. Allocated memory is still 167.8 MB. Free memory was 128.0 MB in the beginning and 126.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:40,451 INFO L168 Benchmark]: RCFGBuilder took 732.42 ms. Allocated memory is still 167.8 MB. Free memory was 126.1 MB in the beginning and 134.2 MB in the end (delta: -8.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:40,458 INFO L168 Benchmark]: TraceAbstraction took 1109.35 ms. Allocated memory is still 167.8 MB. Free memory was 133.6 MB in the beginning and 84.9 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:40,458 INFO L168 Benchmark]: Witness Printer took 5.79 ms. Allocated memory is still 167.8 MB. Free memory is still 84.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:40,470 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 167.8 MB. Free memory is still 140.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 326.34 ms. Allocated memory is still 167.8 MB. Free memory was 142.5 MB in the beginning and 130.1 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 91.95 ms. Allocated memory is still 167.8 MB. Free memory was 130.0 MB in the beginning and 128.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 86.03 ms. Allocated memory is still 167.8 MB. Free memory was 128.0 MB in the beginning and 126.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 732.42 ms. Allocated memory is still 167.8 MB. Free memory was 126.1 MB in the beginning and 134.2 MB in the end (delta: -8.1 MB). Peak memory consumption was 16.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1109.35 ms. Allocated memory is still 167.8 MB. Free memory was 133.6 MB in the beginning and 84.9 MB in the end (delta: 48.8 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. * Witness Printer took 5.79 ms. Allocated memory is still 167.8 MB. Free memory is still 84.9 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 18, overapproximation of someBinaryArithmeticFLOAToperation at line 49. Possible FailurePath: [L14-L33] static const float one_exp = 1.0, halF_exp[2] = { 0.5, -0.5, }, huge_exp = 1.0e+30, twom100_exp = 7.8886090522e-31, ln2HI_exp[2] = { 6.9313812256e-01, -6.9313812256e-01, }, ln2LO_exp[2] = { 9.0580006145e-06, -9.0580006145e-06, }, invln2_exp = 1.4426950216e+00, P1_exp = 1.6666667163e-01, P2_exp = -2.7777778450e-03, P3_exp = 6.6137559770e-05, P4_exp = -1.6533901999e-06, P5_exp = 4.1381369442e-08; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L128] float x = -1.0f / 0.0f; [L36] float y, hi, lo, c, t; [L37] __int32_t k = 0, xsb, sx; [L38] __uint32_t hx; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L41] ieee_float_shape_type gf_u; [L42] gf_u.value = (x) [L43] EXPR gf_u.word [L43] (sx) = gf_u.word [L45] xsb = (sx >> 31) & 1 VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L46] hx = sx & 0x7fffffff VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, hx = sx & 0x7fffffff=2147483647, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L48] COND TRUE ((hx) > 0x7f800000L) [L49] return x + x; VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, hx = sx & 0x7fffffff=2147483647, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L129] float res = __ieee754_expf(x); [L132] EXPR res == 0.0f && __signbit_float(res) == 0 VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, hx = sx & 0x7fffffff=2147483647, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] [L132] COND TRUE !(res == 0.0f && __signbit_float(res) == 0) [L133] reach_error() VAL [halF_exp={5:0}, huge_exp=1000000000000000000000000000000, hx = sx & 0x7fffffff=2147483647, invln2_exp=1803368777/1250000000, ln2HI_exp={6:0}, ln2LO_exp={10:0}, one_exp=1, P1_exp=16666667163/100000000000, P3_exp=6613755977/100000000000000, P5_exp=20690684721/500000000000000000, twom100_exp=39443045261/50000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 48 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 203 SDtfs, 77 SDslu, 90 SDs, 0 SdLazy, 41 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=3, 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, 3 MinimizatonAttempts, 53 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 417 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...