/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_0832b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:06:35,823 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:06:35,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:06:35,874 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:06:35,875 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:06:35,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:06:35,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:06:35,889 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:06:35,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:06:35,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:06:35,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:06:35,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:06:35,909 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:06:35,912 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:06:35,915 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:06:35,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:06:35,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:06:35,923 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:06:35,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:06:35,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:06:35,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:06:35,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:06:35,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:06:35,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:06:35,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 16:06:35,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 16:06:35,976 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 16:06:35,979 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 16:06:35,980 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 16:06:35,981 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 16:06:35,982 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:06:35,983 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:06:35,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:06:35,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:06:35,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:06:35,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:06:35,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:06:35,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:06:35,989 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:06:35,990 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:06:35,991 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:06:35,991 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 16:06:36,051 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:06:36,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:06:36,057 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:06:36,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:06:36,058 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:06:36,058 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:06:36,058 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:06:36,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:06:36,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:06:36,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:06:36,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:06:36,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:06:36,061 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:06:36,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:06:36,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:06:36,062 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:06:36,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:06:36,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:06:36,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:06:36,062 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:06:36,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:06:36,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:06:36,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:06:36,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:06:36,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:06:36,064 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:06:36,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:06:36,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:06:36,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:06:36,509 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:06:36,509 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:06:36,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2021-01-06 16:06:36,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fe671c68c/2e3515c72c7d4f3184b40213b0d6093b/FLAGe01b67a9b [2021-01-06 16:06:37,268 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:06:37,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0832b.c [2021-01-06 16:06:37,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fe671c68c/2e3515c72c7d4f3184b40213b0d6093b/FLAGe01b67a9b [2021-01-06 16:06:37,561 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/fe671c68c/2e3515c72c7d4f3184b40213b0d6093b [2021-01-06 16:06:37,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:06:37,569 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:06:37,571 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:06:37,571 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:06:37,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:06:37,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:06:37" (1/1) ... [2021-01-06 16:06:37,578 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16712247 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:37, skipping insertion in model container [2021-01-06 16:06:37,578 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:06:37" (1/1) ... [2021-01-06 16:06:37,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:06:37,612 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,] [2021-01-06 16:06:37,843 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_0832b.c[3181,3194] [2021-01-06 16:06:37,848 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:06:37,871 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,] [2021-01-06 16:06:37,923 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_0832b.c[3181,3194] [2021-01-06 16:06:37,924 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:06:37,947 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:06:37,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:37 WrapperNode [2021-01-06 16:06:37,948 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:06:37,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:06:37,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:06:37,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:06:37,958 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:37" (1/1) ... [2021-01-06 16:06:37,970 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:37" (1/1) ... [2021-01-06 16:06:38,003 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:06:38,004 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:06:38,004 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:06:38,005 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:06:38,015 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:37" (1/1) ... [2021-01-06 16:06:38,015 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:37" (1/1) ... [2021-01-06 16:06:38,019 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:37" (1/1) ... [2021-01-06 16:06:38,020 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:37" (1/1) ... [2021-01-06 16:06:38,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:37" (1/1) ... [2021-01-06 16:06:38,039 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:37" (1/1) ... [2021-01-06 16:06:38,042 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:37" (1/1) ... [2021-01-06 16:06:38,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:06:38,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:06:38,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:06:38,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:06:38,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:37" (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 16:06:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:06:38,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:06:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:06:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-01-06 16:06:38,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:06:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:06:38,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:06:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:06:38,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-01-06 16:06:38,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:06:38,899 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:06:38,899 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-01-06 16:06:38,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:38 BoogieIcfgContainer [2021-01-06 16:06:38,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:06:38,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:06:38,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:06:38,910 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:06:38,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:06:37" (1/3) ... [2021-01-06 16:06:38,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126f2324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:06:38, skipping insertion in model container [2021-01-06 16:06:38,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:37" (2/3) ... [2021-01-06 16:06:38,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126f2324 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:06:38, skipping insertion in model container [2021-01-06 16:06:38,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:38" (3/3) ... [2021-01-06 16:06:38,915 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832b.c [2021-01-06 16:06:38,923 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:06:38,929 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:06:38,954 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:06:38,986 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:06:38,987 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:06:38,987 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:06:38,987 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:06:38,987 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:06:38,987 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:06:38,988 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:06:38,988 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:06:39,007 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-01-06 16:06:39,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 16:06:39,014 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:39,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:39,015 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:39,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:39,022 INFO L82 PathProgramCache]: Analyzing trace with hash -1829501204, now seen corresponding path program 1 times [2021-01-06 16:06:39,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:39,035 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1081980693] [2021-01-06 16:06:39,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:39,226 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 16:06:39,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1081980693] [2021-01-06 16:06:39,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:39,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:06:39,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507548215] [2021-01-06 16:06:39,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:06:39,235 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:39,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:06:39,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:06:39,254 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2021-01-06 16:06:39,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:39,278 INFO L93 Difference]: Finished difference Result 84 states and 142 transitions. [2021-01-06 16:06:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:06:39,280 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-01-06 16:06:39,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:39,292 INFO L225 Difference]: With dead ends: 84 [2021-01-06 16:06:39,292 INFO L226 Difference]: Without dead ends: 40 [2021-01-06 16:06:39,296 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 16:06:39,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-01-06 16:06:39,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-01-06 16:06:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 16:06:39,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 56 transitions. [2021-01-06 16:06:39,342 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 56 transitions. Word has length 9 [2021-01-06 16:06:39,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:39,342 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 56 transitions. [2021-01-06 16:06:39,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:06:39,342 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 56 transitions. [2021-01-06 16:06:39,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 16:06:39,343 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:39,344 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:39,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:06:39,344 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:39,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:39,345 INFO L82 PathProgramCache]: Analyzing trace with hash 1558849609, now seen corresponding path program 1 times [2021-01-06 16:06:39,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:39,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472074474] [2021-01-06 16:06:39,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:39,470 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 16:06:39,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472074474] [2021-01-06 16:06:39,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:39,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:06:39,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012275055] [2021-01-06 16:06:39,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:06:39,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:39,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:06:39,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:06:39,478 INFO L87 Difference]: Start difference. First operand 40 states and 56 transitions. Second operand 3 states. [2021-01-06 16:06:39,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:39,575 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2021-01-06 16:06:39,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:06:39,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-01-06 16:06:39,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:39,579 INFO L225 Difference]: With dead ends: 85 [2021-01-06 16:06:39,580 INFO L226 Difference]: Without dead ends: 64 [2021-01-06 16:06:39,582 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 16:06:39,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-06 16:06:39,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 46. [2021-01-06 16:06:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 16:06:39,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2021-01-06 16:06:39,598 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 10 [2021-01-06 16:06:39,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:39,599 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2021-01-06 16:06:39,599 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:06:39,600 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2021-01-06 16:06:39,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 16:06:39,600 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:39,601 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:39,601 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:06:39,601 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:39,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:39,602 INFO L82 PathProgramCache]: Analyzing trace with hash -921463484, now seen corresponding path program 1 times [2021-01-06 16:06:39,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:39,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859308859] [2021-01-06 16:06:39,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:39,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:39,676 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 16:06:39,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859308859] [2021-01-06 16:06:39,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:39,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:06:39,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045474168] [2021-01-06 16:06:39,678 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:06:39,678 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:39,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:06:39,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:06:39,680 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand 3 states. [2021-01-06 16:06:39,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:39,736 INFO L93 Difference]: Finished difference Result 82 states and 110 transitions. [2021-01-06 16:06:39,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:06:39,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2021-01-06 16:06:39,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:39,739 INFO L225 Difference]: With dead ends: 82 [2021-01-06 16:06:39,739 INFO L226 Difference]: Without dead ends: 78 [2021-01-06 16:06:39,740 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 16:06:39,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-06 16:06:39,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 53. [2021-01-06 16:06:39,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-06 16:06:39,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 73 transitions. [2021-01-06 16:06:39,750 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 73 transitions. Word has length 12 [2021-01-06 16:06:39,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:39,750 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 73 transitions. [2021-01-06 16:06:39,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:06:39,750 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 73 transitions. [2021-01-06 16:06:39,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 16:06:39,751 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:39,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:39,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:06:39,752 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:39,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:39,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1308032193, now seen corresponding path program 1 times [2021-01-06 16:06:39,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:39,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546624839] [2021-01-06 16:06:39,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:39,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:39,806 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:39,875 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:39,910 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:06:39,910 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:06:39,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 16:06:39,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:06:39 BoogieIcfgContainer [2021-01-06 16:06:39,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:06:39,969 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:06:39,970 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:06:39,970 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:06:39,973 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:38" (3/4) ... [2021-01-06 16:06:39,977 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:06:39,977 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:06:39,980 INFO L168 Benchmark]: Toolchain (without parser) took 2409.59 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 68.8 MB in the end (delta: 57.6 MB). Peak memory consumption was 57.9 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:39,981 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:39,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.46 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 114.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:39,986 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.81 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 112.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:39,987 INFO L168 Benchmark]: Boogie Preprocessor took 41.87 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 110.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:39,988 INFO L168 Benchmark]: RCFGBuilder took 857.42 ms. Allocated memory is still 151.0 MB. Free memory was 110.4 MB in the beginning and 117.5 MB in the end (delta: -7.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:39,994 INFO L168 Benchmark]: TraceAbstraction took 1062.73 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 68.8 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:39,995 INFO L168 Benchmark]: Witness Printer took 7.78 ms. Allocated memory is still 151.0 MB. Free memory is still 68.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:40,005 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 151.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 377.46 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 114.2 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 53.81 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 112.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.87 ms. Allocated memory is still 151.0 MB. Free memory was 112.1 MB in the beginning and 110.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 857.42 ms. Allocated memory is still 151.0 MB. Free memory was 110.4 MB in the beginning and 117.5 MB in the end (delta: -7.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1062.73 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 68.8 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. * Witness Printer took 7.78 ms. Allocated memory is still 151.0 MB. Free memory is still 68.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 124]: 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 123, overapproximation of someUnaryDOUBLEoperation at line 21, overapproximation of someUnaryFLOAToperation at line 119, overapproximation of someBinaryArithmeticFLOAToperation at line 52. Possible FailurePath: [L17-L36] 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] [L119] float x = -0.0f; [L39] float y, hi, lo, c, t; [L40] __int32_t k = 0, xsb, sx; [L41] __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] [L44] ieee_float_shape_type gf_u; [L45] gf_u.value = (x) [L46] EXPR gf_u.word [L46] (sx) = gf_u.word [L48] 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] [L49] 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] [L51] COND TRUE ((hx) > 0x7f800000L) [L52] 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] [L120] float res = __ieee754_expf(x); [L123] COND TRUE res != 1.0f 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] [L124] 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, 43 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: 179 SDtfs, 65 SDslu, 78 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=53occurred 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, 43 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 28 ConstructedInterpolants, 0 QuantifiedInterpolants, 350 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...