/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/double_req_bl_1032d.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:11:15,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:11:15,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:11:15,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:11:15,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:11:15,534 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:11:15,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:11:15,538 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:11:15,540 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:11:15,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:11:15,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:11:15,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:11:15,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:11:15,546 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:11:15,547 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:11:15,548 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:11:15,549 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:11:15,562 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:11:15,564 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:11:15,566 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:11:15,568 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:11:15,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:11:15,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:11:15,578 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:11:15,581 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 06:11:15,581 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 06:11:15,581 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 06:11:15,582 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 06:11:15,583 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 06:11:15,587 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 06:11:15,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:11:15,588 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:11:15,589 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:11:15,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:11:15,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:11:15,592 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:11:15,593 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:11:15,593 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:11:15,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:11:15,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:11:15,601 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:11:15,602 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 06:11:15,650 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:11:15,650 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:11:15,654 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:11:15,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:11:15,654 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:11:15,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:11:15,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:11:15,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:11:15,656 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:11:15,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:11:15,657 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:11:15,657 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:11:15,657 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:11:15,658 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:11:15,658 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:11:15,658 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:11:15,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:11:15,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:11:15,659 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:11:15,659 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:11:15,659 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:11:15,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:11:15,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:11:15,660 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:11:15,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:11:15,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:11:16,083 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:11:16,113 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:11:16,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:11:16,119 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:11:16,120 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:11:16,121 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-12-23 06:11:16,211 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/19ae263cf/6216de3cbab34d66846c5529615b90c3/FLAGe991dc213 [2020-12-23 06:11:16,918 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:11:16,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1032d.c [2020-12-23 06:11:16,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/19ae263cf/6216de3cbab34d66846c5529615b90c3/FLAGe991dc213 [2020-12-23 06:11:17,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/19ae263cf/6216de3cbab34d66846c5529615b90c3 [2020-12-23 06:11:17,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:11:17,248 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:11:17,250 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:11:17,250 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:11:17,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:11:17,256 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:11:17" (1/1) ... [2020-12-23 06:11:17,258 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18c84ad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:17, skipping insertion in model container [2020-12-23 06:11:17,258 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:11:17" (1/1) ... [2020-12-23 06:11:17,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:11:17,294 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: StructLHS[VariableLHS[~ew_u~0,],value] left hand side expression in assignment: lhs: VariableLHS[~msw~0,] left hand side expression in assignment: lhs: VariableLHS[~lsw~0,] left hand side expression in assignment: lhs: VariableLHS[~exponent_less_1023~0,] left hand side expression in assignment: lhs: VariableLHS[~lsw~0,] left hand side expression in assignment: lhs: VariableLHS[~lsw~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~lsw~0,] left hand side expression in assignment: lhs: StructLHS[StructLHS[VariableLHS[~iw_u~0,],parts],msw] left hand side expression in assignment: lhs: StructLHS[StructLHS[VariableLHS[~iw_u~0,],parts],lsw] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~ew_u~1,],value] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] left hand side expression in assignment: lhs: VariableLHS[~lx~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] [2020-12-23 06:11:17,608 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/double_req_bl_1032d.c[2356,2369] [2020-12-23 06:11:17,617 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:11:17,630 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#ew_u~0,],base],StructAccessExpression[IdentifierExpression[~#ew_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~msw~0,] left hand side expression in assignment: lhs: VariableLHS[~lsw~0,] left hand side expression in assignment: lhs: VariableLHS[~exponent_less_1023~0,] left hand side expression in assignment: lhs: VariableLHS[~lsw~0,] left hand side expression in assignment: lhs: VariableLHS[~lsw~0,] left hand side expression in assignment: lhs: VariableLHS[~tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~lsw~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#iw_u~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~#iw_u~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#iw_u~0,],base],StructAccessExpression[IdentifierExpression[~#iw_u~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#ew_u~1,],base],StructAccessExpression[IdentifierExpression[~#ew_u~1,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] left hand side expression in assignment: lhs: VariableLHS[~lx~0,] left hand side expression in assignment: lhs: VariableLHS[~hx~0,] [2020-12-23 06:11:17,700 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/double_req_bl_1032d.c[2356,2369] [2020-12-23 06:11:17,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:11:17,718 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:11:17,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:17 WrapperNode [2020-12-23 06:11:17,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:11:17,721 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:11:17,721 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:11:17,721 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:11:17,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:17" (1/1) ... [2020-12-23 06:11:17,741 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:17" (1/1) ... [2020-12-23 06:11:17,806 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:11:17,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:11:17,810 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:11:17,810 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:11:17,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:17" (1/1) ... [2020-12-23 06:11:17,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:17" (1/1) ... [2020-12-23 06:11:17,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:17" (1/1) ... [2020-12-23 06:11:17,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:17" (1/1) ... [2020-12-23 06:11:17,888 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:17" (1/1) ... [2020-12-23 06:11:17,895 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:17" (1/1) ... [2020-12-23 06:11:17,910 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:17" (1/1) ... [2020-12-23 06:11:17,921 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:11:17,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:11:17,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:11:17,924 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:11:17,925 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:17" (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 [2020-12-23 06:11:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:11:18,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:11:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-23 06:11:18,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 06:11:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-23 06:11:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:11:18,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:11:18,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:11:18,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:11:18,877 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:11:18,877 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-23 06:11:18,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:11:18 BoogieIcfgContainer [2020-12-23 06:11:18,879 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:11:18,881 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:11:18,881 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:11:18,885 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:11:18,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:11:17" (1/3) ... [2020-12-23 06:11:18,886 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797e9cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:11:18, skipping insertion in model container [2020-12-23 06:11:18,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:17" (2/3) ... [2020-12-23 06:11:18,887 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@797e9cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:11:18, skipping insertion in model container [2020-12-23 06:11:18,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:11:18" (3/3) ... [2020-12-23 06:11:18,889 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1032d.c [2020-12-23 06:11:18,896 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:11:18,901 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:11:18,922 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:11:18,949 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:11:18,950 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:11:18,950 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:11:18,950 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:11:18,950 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:11:18,950 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:11:18,951 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:11:18,951 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:11:18,966 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-12-23 06:11:18,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 06:11:18,972 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:18,972 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:18,973 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:18,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:18,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1058195810, now seen corresponding path program 1 times [2020-12-23 06:11:18,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:18,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722405286] [2020-12-23 06:11:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:19,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:19,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 06:11:19,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722405286] [2020-12-23 06:11:19,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:19,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:11:19,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578374981] [2020-12-23 06:11:19,160 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:11:19,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:19,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:11:19,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:11:19,179 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-12-23 06:11:19,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:19,199 INFO L93 Difference]: Finished difference Result 56 states and 84 transitions. [2020-12-23 06:11:19,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:11:19,200 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-23 06:11:19,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:19,211 INFO L225 Difference]: With dead ends: 56 [2020-12-23 06:11:19,211 INFO L226 Difference]: Without dead ends: 26 [2020-12-23 06:11:19,214 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 [2020-12-23 06:11:19,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-23 06:11:19,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-12-23 06:11:19,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-12-23 06:11:19,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 33 transitions. [2020-12-23 06:11:19,253 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 33 transitions. Word has length 13 [2020-12-23 06:11:19,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:19,254 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 33 transitions. [2020-12-23 06:11:19,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:11:19,254 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 33 transitions. [2020-12-23 06:11:19,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 06:11:19,255 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:19,255 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:19,256 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:11:19,256 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:19,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:19,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1055488069, now seen corresponding path program 1 times [2020-12-23 06:11:19,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:19,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663546890] [2020-12-23 06:11:19,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:20,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:11:20,425 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:11:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:11:20,945 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:11:20,993 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:11:20,993 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:11:20,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:11:21,044 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:11:21 BoogieIcfgContainer [2020-12-23 06:11:21,044 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:11:21,046 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:11:21,047 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:11:21,047 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:11:21,048 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:11:18" (3/4) ... [2020-12-23 06:11:21,052 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:11:21,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:11:21,058 INFO L168 Benchmark]: Toolchain (without parser) took 3806.15 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 146.4 MB in the beginning and 134.3 MB in the end (delta: 12.1 MB). Peak memory consumption was 46.9 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:21,059 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 172.0 MB. Free memory is still 144.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:11:21,061 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.17 ms. Allocated memory is still 172.0 MB. Free memory was 146.2 MB in the beginning and 134.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:21,062 INFO L168 Benchmark]: Boogie Procedure Inliner took 87.15 ms. Allocated memory is still 172.0 MB. Free memory was 134.6 MB in the beginning and 128.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:21,063 INFO L168 Benchmark]: Boogie Preprocessor took 111.81 ms. Allocated memory is still 172.0 MB. Free memory was 128.1 MB in the beginning and 123.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:21,065 INFO L168 Benchmark]: RCFGBuilder took 956.29 ms. Allocated memory is still 172.0 MB. Free memory was 123.0 MB in the beginning and 100.4 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:21,067 INFO L168 Benchmark]: TraceAbstraction took 2162.99 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 99.8 MB in the beginning and 134.8 MB in the end (delta: -35.0 MB). Peak memory consumption was 68.3 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:21,070 INFO L168 Benchmark]: Witness Printer took 5.97 ms. Allocated memory is still 206.6 MB. Free memory was 134.8 MB in the beginning and 134.3 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:11:21,081 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 172.0 MB. Free memory is still 144.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 470.17 ms. Allocated memory is still 172.0 MB. Free memory was 146.2 MB in the beginning and 134.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 87.15 ms. Allocated memory is still 172.0 MB. Free memory was 134.6 MB in the beginning and 128.1 MB in the end (delta: 6.6 MB). Peak memory consumption was 6.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 111.81 ms. Allocated memory is still 172.0 MB. Free memory was 128.1 MB in the beginning and 123.1 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 956.29 ms. Allocated memory is still 172.0 MB. Free memory was 123.0 MB in the beginning and 100.4 MB in the end (delta: 22.6 MB). Peak memory consumption was 22.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2162.99 ms. Allocated memory was 172.0 MB in the beginning and 206.6 MB in the end (delta: 34.6 MB). Free memory was 99.8 MB in the beginning and 134.8 MB in the end (delta: -35.0 MB). Peak memory consumption was 68.3 MB. Max. memory is 8.0 GB. * Witness Printer took 5.97 ms. Allocated memory is still 206.6 MB. Free memory was 134.8 MB in the beginning and 134.3 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: 93]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of shiftRight at line 33, overapproximation of bitwiseOr at line 75, overapproximation of someBinaryArithmeticDOUBLEoperation at line 88, overapproximation of bitwiseAnd at line 74. Possible FailurePath: [L88] double x = -1.0 / 0.0; [L17] __int32_t msw, exponent_less_1023; [L18] __uint32_t lsw; [L20] ieee_double_shape_type ew_u; [L21] ew_u.value = (x) [L22] EXPR ew_u.parts.msw [L22] (msw) = ew_u.parts.msw [L23] EXPR ew_u.parts.lsw [L23] (lsw) = ew_u.parts.lsw [L25] exponent_less_1023 = ((msw & 0x7ff00000) >> 20) - 1023 [L26] COND TRUE exponent_less_1023 < 20 [L27] COND FALSE !(exponent_less_1023 < 0) [L33] __uint32_t exponent_mask = 0x000fffff >> exponent_less_1023; [L34] COND TRUE (msw & exponent_mask) == 0 && lsw == 0 [L35] return x; [L89] double res = round_double(x); [L67] __int32_t hx, lx; [L69] ieee_double_shape_type ew_u; [L70] ew_u.value = (x) [L71] EXPR ew_u.parts.msw [L71] (hx) = ew_u.parts.msw [L72] EXPR ew_u.parts.lsw [L72] (lx) = ew_u.parts.lsw [L74] hx &= 0x7fffffff [L75] hx |= (__uint32_t)(lx | (-lx)) >> 31 [L76] hx = 0x7ff00000 - hx [L77] return 1 - (int)((__uint32_t)(hx | (-hx)) >> 31); [L92] COND TRUE !isinf_double(res) [L93] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 144 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...