/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_0832a.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:06:34,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:06:34,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:06:34,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:06:34,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:06:34,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:06:34,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:06:34,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:06:34,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:06:34,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:06:34,573 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:06:34,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:06:34,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:06:34,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:06:34,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:06:34,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:06:34,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:06:34,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:06:34,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:06:34,587 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:06:34,589 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:06:34,594 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:06:34,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:06:34,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:06:34,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-01-06 16:06:34,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:06:34,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:06:34,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:06:34,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:06:34,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:06:34,636 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:06:34,637 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:06:34,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:06:34,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:06:34,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:06:34,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:06:34,645 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 16:06:34,707 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:06:34,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:06:34,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:06:34,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:06:34,712 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:06:34,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:06:34,715 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:06:34,715 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:06:34,715 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:06:34,716 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:06:34,716 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:06:34,716 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:06:34,716 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:06:34,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:06:34,717 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:06:34,717 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:06:34,717 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:06:34,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:06:34,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:06:34,718 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:06:34,718 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:06:34,719 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:06:34,719 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:06:34,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:06:34,720 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:06:34,720 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:06:35,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:06:35,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:06:35,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:06:35,187 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:06:35,188 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:06:35,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2021-01-06 16:06:35,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/37729ace4/71ed40bb79ce47cd95988f23af4975ce/FLAG2b6362d87 [2021-01-06 16:06:35,877 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:06:35,878 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_0832a.c [2021-01-06 16:06:35,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/37729ace4/71ed40bb79ce47cd95988f23af4975ce/FLAG2b6362d87 [2021-01-06 16:06:36,209 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/37729ace4/71ed40bb79ce47cd95988f23af4975ce [2021-01-06 16:06:36,223 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:06:36,226 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:06:36,231 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:06:36,231 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:06:36,235 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:06:36,237 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:06:36" (1/1) ... [2021-01-06 16:06:36,240 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26cfc25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:36, skipping insertion in model container [2021-01-06 16:06:36,240 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:06:36" (1/1) ... [2021-01-06 16:06:36,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:06:36,295 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 16:06:36,621 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_0832a.c[3180,3193] [2021-01-06 16:06:36,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:06:36,638 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 16:06:36,676 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_0832a.c[3180,3193] [2021-01-06 16:06:36,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:06:36,697 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:06:36,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:36 WrapperNode [2021-01-06 16:06:36,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:06:36,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:06:36,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:06:36,699 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:06:36,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:36" (1/1) ... [2021-01-06 16:06:36,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:36" (1/1) ... [2021-01-06 16:06:36,765 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:06:36,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:06:36,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:06:36,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:06:36,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:36" (1/1) ... [2021-01-06 16:06:36,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:36" (1/1) ... [2021-01-06 16:06:36,798 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:36" (1/1) ... [2021-01-06 16:06:36,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:36" (1/1) ... [2021-01-06 16:06:36,819 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:36" (1/1) ... [2021-01-06 16:06:36,837 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:36" (1/1) ... [2021-01-06 16:06:36,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:36" (1/1) ... [2021-01-06 16:06:36,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:06:36,850 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:06:36,850 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:06:36,850 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:06:36,851 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:36" (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 16:06:36,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:06:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:06:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:06:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-01-06 16:06:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:06:36,951 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:06:36,951 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:06:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:06:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~real [2021-01-06 16:06:36,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:06:37,552 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:06:37,553 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2021-01-06 16:06:37,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:37 BoogieIcfgContainer [2021-01-06 16:06:37,556 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:06:37,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:06:37,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:06:37,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:06:37,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:06:36" (1/3) ... [2021-01-06 16:06:37,563 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c4b7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:06:37, skipping insertion in model container [2021-01-06 16:06:37,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:06:36" (2/3) ... [2021-01-06 16:06:37,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30c4b7a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:06:37, skipping insertion in model container [2021-01-06 16:06:37,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:37" (3/3) ... [2021-01-06 16:06:37,565 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_0832a.c [2021-01-06 16:06:37,572 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:06:37,577 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:06:37,596 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:06:37,624 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:06:37,624 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:06:37,624 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:06:37,624 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:06:37,625 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:06:37,625 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:06:37,625 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:06:37,625 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:06:37,641 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-01-06 16:06:37,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-01-06 16:06:37,647 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:37,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:37,648 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:37,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:37,655 INFO L82 PathProgramCache]: Analyzing trace with hash -1829501204, now seen corresponding path program 1 times [2021-01-06 16:06:37,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:37,666 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006427384] [2021-01-06 16:06:37,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:37,863 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 16:06:37,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006427384] [2021-01-06 16:06:37,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:37,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-01-06 16:06:37,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390953701] [2021-01-06 16:06:37,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-01-06 16:06:37,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:37,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-01-06 16:06:37,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-01-06 16:06:37,888 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2021-01-06 16:06:37,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:37,912 INFO L93 Difference]: Finished difference Result 84 states and 142 transitions. [2021-01-06 16:06:37,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-01-06 16:06:37,913 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2021-01-06 16:06:37,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:37,925 INFO L225 Difference]: With dead ends: 84 [2021-01-06 16:06:37,925 INFO L226 Difference]: Without dead ends: 40 [2021-01-06 16:06:37,928 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 16:06:37,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-01-06 16:06:37,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-01-06 16:06:37,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2021-01-06 16:06:37,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 56 transitions. [2021-01-06 16:06:37,970 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 56 transitions. Word has length 9 [2021-01-06 16:06:37,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:37,971 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 56 transitions. [2021-01-06 16:06:37,971 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-01-06 16:06:37,971 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 56 transitions. [2021-01-06 16:06:37,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 16:06:37,972 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:37,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:37,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:06:37,973 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:37,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:37,974 INFO L82 PathProgramCache]: Analyzing trace with hash 1558849609, now seen corresponding path program 1 times [2021-01-06 16:06:37,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:37,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178214207] [2021-01-06 16:06:37,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:38,147 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 16:06:38,147 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178214207] [2021-01-06 16:06:38,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:38,148 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:06:38,148 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37807256] [2021-01-06 16:06:38,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:06:38,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:38,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:06:38,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:06:38,152 INFO L87 Difference]: Start difference. First operand 40 states and 56 transitions. Second operand 3 states. [2021-01-06 16:06:38,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:38,210 INFO L93 Difference]: Finished difference Result 85 states and 112 transitions. [2021-01-06 16:06:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:06:38,211 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-01-06 16:06:38,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:38,212 INFO L225 Difference]: With dead ends: 85 [2021-01-06 16:06:38,213 INFO L226 Difference]: Without dead ends: 64 [2021-01-06 16:06:38,214 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 16:06:38,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-01-06 16:06:38,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 46. [2021-01-06 16:06:38,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-01-06 16:06:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 63 transitions. [2021-01-06 16:06:38,222 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 63 transitions. Word has length 10 [2021-01-06 16:06:38,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:38,225 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 63 transitions. [2021-01-06 16:06:38,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:06:38,226 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 63 transitions. [2021-01-06 16:06:38,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-01-06 16:06:38,226 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:38,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:38,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-01-06 16:06:38,227 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:38,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:38,228 INFO L82 PathProgramCache]: Analyzing trace with hash -921463484, now seen corresponding path program 1 times [2021-01-06 16:06:38,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:38,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849331637] [2021-01-06 16:06:38,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-01-06 16:06:38,312 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 16:06:38,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849331637] [2021-01-06 16:06:38,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-01-06 16:06:38,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-01-06 16:06:38,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915851163] [2021-01-06 16:06:38,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-01-06 16:06:38,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-01-06 16:06:38,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-01-06 16:06:38,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-01-06 16:06:38,322 INFO L87 Difference]: Start difference. First operand 46 states and 63 transitions. Second operand 3 states. [2021-01-06 16:06:38,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-01-06 16:06:38,413 INFO L93 Difference]: Finished difference Result 82 states and 110 transitions. [2021-01-06 16:06:38,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-01-06 16:06:38,418 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2021-01-06 16:06:38,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-01-06 16:06:38,419 INFO L225 Difference]: With dead ends: 82 [2021-01-06 16:06:38,420 INFO L226 Difference]: Without dead ends: 78 [2021-01-06 16:06:38,422 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 16:06:38,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-01-06 16:06:38,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 53. [2021-01-06 16:06:38,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-01-06 16:06:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 73 transitions. [2021-01-06 16:06:38,438 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 73 transitions. Word has length 12 [2021-01-06 16:06:38,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-01-06 16:06:38,439 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 73 transitions. [2021-01-06 16:06:38,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-01-06 16:06:38,439 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 73 transitions. [2021-01-06 16:06:38,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-01-06 16:06:38,442 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:06:38,442 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:06:38,443 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-01-06 16:06:38,443 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:06:38,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:06:38,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1308032193, now seen corresponding path program 1 times [2021-01-06 16:06:38,444 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:06:38,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340425426] [2021-01-06 16:06:38,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:06:38,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:38,539 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:38,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:06:38,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:06:38,613 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:06:38,614 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:06:38,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-01-06 16:06:38,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:06:38 BoogieIcfgContainer [2021-01-06 16:06:38,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:06:38,662 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:06:38,662 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:06:38,662 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:06:38,663 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:06:37" (3/4) ... [2021-01-06 16:06:38,667 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:06:38,667 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:06:38,670 INFO L168 Benchmark]: Toolchain (without parser) took 2442.89 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 68.8 MB in the end (delta: 57.3 MB). Peak memory consumption was 56.8 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:38,671 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 124.4 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:38,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 467.00 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 113.8 MB in the end (delta: 12.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:38,672 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.76 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 111.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:38,678 INFO L168 Benchmark]: Boogie Preprocessor took 78.72 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 110.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:38,678 INFO L168 Benchmark]: RCFGBuilder took 706.42 ms. Allocated memory is still 151.0 MB. Free memory was 110.0 MB in the beginning and 118.1 MB in the end (delta: -8.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:38,679 INFO L168 Benchmark]: TraceAbstraction took 1103.15 ms. Allocated memory is still 151.0 MB. Free memory was 117.6 MB in the beginning and 69.4 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. [2021-01-06 16:06:38,680 INFO L168 Benchmark]: Witness Printer took 5.38 ms. Allocated memory is still 151.0 MB. Free memory was 69.4 MB in the beginning and 68.8 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:06:38,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 124.4 MB in the end (delta: 84.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 467.00 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 113.8 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 66.76 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 111.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.72 ms. Allocated memory is still 151.0 MB. Free memory was 111.9 MB in the beginning and 110.1 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 706.42 ms. Allocated memory is still 151.0 MB. Free memory was 110.0 MB in the beginning and 118.1 MB in the end (delta: -8.1 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1103.15 ms. Allocated memory is still 151.0 MB. Free memory was 117.6 MB in the beginning and 69.4 MB in the end (delta: 48.2 MB). Peak memory consumption was 48.2 MB. Max. memory is 8.0 GB. * Witness Printer took 5.38 ms. Allocated memory is still 151.0 MB. Free memory was 69.4 MB in the beginning and 68.8 MB in the end (delta: 522.2 kB). 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 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, 0.2s SatisfiabilityAnalysisTime, 0.2s 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...