/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_1051.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:11:17,722 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:11:17,727 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:11:17,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:11:17,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:11:17,784 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:11:17,785 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:11:17,788 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:11:17,790 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:11:17,791 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:11:17,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:11:17,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:11:17,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:11:17,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:11:17,797 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:11:17,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:11:17,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:11:17,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:11:17,816 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:11:17,820 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:11:17,826 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:11:17,830 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:11:17,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:11:17,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:11:17,840 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:11:17,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:11:17,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:11:17,861 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:11:17,865 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 06:11:17,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:11:17,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:11:17,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:11:17,918 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:11:17,918 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:11:17,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:11:17,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:11:17,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:11:17,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:11:17,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:11:17,920 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:11:17,920 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:11:17,921 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:11:17,921 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:11:17,921 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:11:17,921 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:11:17,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:11:17,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:11:17,923 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:11:17,923 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:11:17,923 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:11:17,923 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:11:17,924 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:11:17,924 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:11:17,924 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:11:17,924 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:11:18,325 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:11:18,352 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:11:18,355 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:11:18,356 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:11:18,357 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:11:18,358 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2020-12-23 06:11:18,433 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2b35f2997/1967744d5ef9405a8aa458cf9f58a362/FLAG18487b23b [2020-12-23 06:11:19,185 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:11:19,186 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/double_req_bl_1051.c [2020-12-23 06:11:19,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2b35f2997/1967744d5ef9405a8aa458cf9f58a362/FLAG18487b23b [2020-12-23 06:11:19,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/2b35f2997/1967744d5ef9405a8aa458cf9f58a362 [2020-12-23 06:11:19,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:11:19,527 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:11:19,529 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:11:19,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:11:19,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:11:19,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:11:19" (1/1) ... [2020-12-23 06:11:19,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3faa9935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:19, skipping insertion in model container [2020-12-23 06:11:19,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:11:19" (1/1) ... [2020-12-23 06:11:19,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:11:19,574 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[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~j0~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] 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,] [2020-12-23 06:11:19,784 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_1051.c[2106,2119] [2020-12-23 06:11:19,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:11:19,797 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[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~j0~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i0~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~j~0,] left hand side expression in assignment: lhs: VariableLHS[~i1~0,] 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,] [2020-12-23 06:11:19,848 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_1051.c[2106,2119] [2020-12-23 06:11:19,849 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:11:19,867 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:11:19,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:19 WrapperNode [2020-12-23 06:11:19,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:11:19,870 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:11:19,870 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:11:19,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:11:19,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:19" (1/1) ... [2020-12-23 06:11:19,889 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:19" (1/1) ... [2020-12-23 06:11:19,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:11:19,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:11:19,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:11:19,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:11:19,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:19" (1/1) ... [2020-12-23 06:11:19,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:19" (1/1) ... [2020-12-23 06:11:19,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:19" (1/1) ... [2020-12-23 06:11:19,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:19" (1/1) ... [2020-12-23 06:11:19,957 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:19" (1/1) ... [2020-12-23 06:11:19,962 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:19" (1/1) ... [2020-12-23 06:11:19,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:19" (1/1) ... [2020-12-23 06:11:19,969 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:11:19,971 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:11:19,971 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:11:19,971 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:11:19,972 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:19" (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 06:11:20,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:11:20,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:11:20,080 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-23 06:11:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 06:11:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-23 06:11:20,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:11:20,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:11:20,082 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:11:20,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:11:20,676 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:11:20,676 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-23 06:11:20,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:11:20 BoogieIcfgContainer [2020-12-23 06:11:20,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:11:20,680 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:11:20,680 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:11:20,684 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:11:20,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:11:19" (1/3) ... [2020-12-23 06:11:20,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b7708d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:11:20, skipping insertion in model container [2020-12-23 06:11:20,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:11:19" (2/3) ... [2020-12-23 06:11:20,685 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19b7708d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:11:20, skipping insertion in model container [2020-12-23 06:11:20,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:11:20" (3/3) ... [2020-12-23 06:11:20,687 INFO L111 eAbstractionObserver]: Analyzing ICFG double_req_bl_1051.c [2020-12-23 06:11:20,697 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:11:20,705 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:11:20,727 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:11:20,757 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:11:20,757 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:11:20,757 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:11:20,758 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:11:20,758 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:11:20,758 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:11:20,758 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:11:20,758 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:11:20,776 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-12-23 06:11:20,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-23 06:11:20,783 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:20,784 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:20,784 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:20,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:20,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1930047821, now seen corresponding path program 1 times [2020-12-23 06:11:20,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:20,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579453369] [2020-12-23 06:11:20,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:20,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:11:20,973 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 06:11:20,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579453369] [2020-12-23 06:11:20,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:11:20,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:11:20,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320920014] [2020-12-23 06:11:20,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:11:20,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:11:20,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:11:20,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:11:21,002 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 2 states. [2020-12-23 06:11:21,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:11:21,026 INFO L93 Difference]: Finished difference Result 66 states and 104 transitions. [2020-12-23 06:11:21,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:11:21,027 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-23 06:11:21,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:11:21,039 INFO L225 Difference]: With dead ends: 66 [2020-12-23 06:11:21,039 INFO L226 Difference]: Without dead ends: 31 [2020-12-23 06:11:21,043 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 06:11:21,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-23 06:11:21,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-23 06:11:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-23 06:11:21,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-12-23 06:11:21,087 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 11 [2020-12-23 06:11:21,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:11:21,087 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-12-23 06:11:21,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:11:21,088 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-12-23 06:11:21,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-23 06:11:21,089 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:11:21,089 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:11:21,089 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:11:21,089 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:11:21,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:11:21,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1310126896, now seen corresponding path program 1 times [2020-12-23 06:11:21,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:11:21,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302521678] [2020-12-23 06:11:21,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:11:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:11:21,264 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:11:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:11:21,350 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:11:21,378 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:11:21,378 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:11:21,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:11:21,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:11:21 BoogieIcfgContainer [2020-12-23 06:11:21,414 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:11:21,415 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:11:21,415 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:11:21,415 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:11:21,416 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:11:20" (3/4) ... [2020-12-23 06:11:21,420 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:11:21,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:11:21,422 INFO L168 Benchmark]: Toolchain (without parser) took 1894.01 ms. Allocated memory is still 152.0 MB. Free memory was 126.7 MB in the beginning and 93.1 MB in the end (delta: 33.7 MB). Peak memory consumption was 35.2 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:21,423 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 152.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:11:21,424 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.47 ms. Allocated memory is still 152.0 MB. Free memory was 126.7 MB in the beginning and 115.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:21,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.51 ms. Allocated memory is still 152.0 MB. Free memory was 115.8 MB in the beginning and 113.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:21,426 INFO L168 Benchmark]: Boogie Preprocessor took 40.79 ms. Allocated memory is still 152.0 MB. Free memory was 113.5 MB in the beginning and 111.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:21,427 INFO L168 Benchmark]: RCFGBuilder took 707.81 ms. Allocated memory is still 152.0 MB. Free memory was 111.6 MB in the beginning and 120.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:21,428 INFO L168 Benchmark]: TraceAbstraction took 734.20 ms. Allocated memory is still 152.0 MB. Free memory was 120.3 MB in the beginning and 93.6 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:21,428 INFO L168 Benchmark]: Witness Printer took 5.02 ms. Allocated memory is still 152.0 MB. Free memory was 93.6 MB in the beginning and 93.1 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:11:21,433 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 152.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 339.47 ms. Allocated memory is still 152.0 MB. Free memory was 126.7 MB in the beginning and 115.8 MB in the end (delta: 10.9 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 58.51 ms. Allocated memory is still 152.0 MB. Free memory was 115.8 MB in the beginning and 113.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.79 ms. Allocated memory is still 152.0 MB. Free memory was 113.5 MB in the beginning and 111.6 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 707.81 ms. Allocated memory is still 152.0 MB. Free memory was 111.6 MB in the beginning and 120.8 MB in the end (delta: -9.2 MB). Peak memory consumption was 15.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 734.20 ms. Allocated memory is still 152.0 MB. Free memory was 120.3 MB in the beginning and 93.6 MB in the end (delta: 26.7 MB). Peak memory consumption was 26.2 MB. Max. memory is 8.0 GB. * Witness Printer took 5.02 ms. Allocated memory is still 152.0 MB. Free memory was 93.6 MB in the beginning and 93.1 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 95]: 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 39, overapproximation of bitwiseOr at line 40, overapproximation of someBinaryArithmeticDOUBLEoperation at line 90, overapproximation of bitwiseAnd at line 40, overapproximation of someBinaryDOUBLEComparisonOperation at line 82. Possible FailurePath: [L16] static const double huge_floor = 1.0e300; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L90] double x = 0.0 / 0.0; [L19] __int32_t i0, i1, j0; [L20] __uint32_t i, j; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L22] ieee_double_shape_type ew_u; [L23] ew_u.value = (x) [L24] EXPR ew_u.parts.msw [L24] (i0) = ew_u.parts.msw [L25] EXPR ew_u.parts.lsw [L25] (i1) = ew_u.parts.lsw [L27] j0 = ((i0 >> 20) & 0x7ff) - 0x3ff VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L28] COND TRUE j0 < 20 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L29] COND FALSE !(j0 < 0) [L39] i = (0x000fffff) >> j0 VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L40] COND TRUE ((i0 & i) | i1) == 0 [L41] return x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L91] double res = floor_double(x); [L82] return x != x; VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] [L94] COND TRUE !isnan_double(res) [L95] reach_error() VAL [huge_floor=1000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 48 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=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...