/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_1072b.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:12:35,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:12:35,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:12:35,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:12:35,906 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:12:35,908 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:12:35,910 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:12:35,913 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:12:35,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:12:35,917 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:12:35,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:12:35,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:12:35,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:12:35,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:12:35,923 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:12:35,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:12:35,926 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:12:35,927 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:12:35,942 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:12:35,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:12:35,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:12:35,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:12:35,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:12:35,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:12:35,956 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:12:35,968 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:12:35,969 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:12:35,970 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:12:35,971 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 06:12:35,999 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:12:35,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:12:36,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:12:36,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:12:36,002 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:12:36,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:12:36,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:12:36,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:12:36,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:12:36,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:12:36,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:12:36,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:12:36,003 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:12:36,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:12:36,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:12:36,004 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:12:36,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:12:36,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:12:36,005 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:12:36,005 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:12:36,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:12:36,006 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:12:36,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:12:36,006 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:12:36,006 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:12:36,006 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:12:36,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:12:36,428 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:12:36,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:12:36,433 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:12:36,434 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:12:36,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-newlib/float_req_bl_1072b.c [2020-12-23 06:12:36,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/26ad736a8/1dd1c9815d34442089a605383bd4f880/FLAG2eb864d43 [2020-12-23 06:12:37,262 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:12:37,265 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-newlib/float_req_bl_1072b.c [2020-12-23 06:12:37,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/26ad736a8/1dd1c9815d34442089a605383bd4f880/FLAG2eb864d43 [2020-12-23 06:12:37,590 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/26ad736a8/1dd1c9815d34442089a605383bd4f880 [2020-12-23 06:12:37,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:12:37,600 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:12:37,602 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:12:37,602 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:12:37,606 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:12:37,607 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:12:37" (1/1) ... [2020-12-23 06:12:37,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cc6567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:37, skipping insertion in model container [2020-12-23 06:12:37,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:12:37" (1/1) ... [2020-12-23 06:12:37,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:12:37,632 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[~w~0,] left hand side expression in assignment: lhs: VariableLHS[~signbit~0,] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~exponent_less_127~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~sf_u~0,],word] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~sf_u~1,],word] left hand side expression in assignment: lhs: VariableLHS[~x,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~gf_u~1,],value] left hand side expression in assignment: lhs: VariableLHS[~ix~0,] [2020-12-23 06:12:37,811 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_1072b.c[1610,1623] [2020-12-23 06:12:37,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:12:37,825 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[~w~0,] left hand side expression in assignment: lhs: VariableLHS[~signbit~0,] ----Is the binary operator a bitwise operator? true left hand side expression in assignment: lhs: VariableLHS[~exponent_less_127~0,] 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[~x,] 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[~x,] 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[~ix~0,] [2020-12-23 06:12:37,853 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_1072b.c[1610,1623] [2020-12-23 06:12:37,854 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:12:37,873 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:12:37,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:37 WrapperNode [2020-12-23 06:12:37,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:12:37,875 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:12:37,875 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:12:37,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:12:37,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:37" (1/1) ... [2020-12-23 06:12:37,895 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:37" (1/1) ... [2020-12-23 06:12:37,925 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:12:37,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:12:37,927 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:12:37,927 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:12:37,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:37" (1/1) ... [2020-12-23 06:12:37,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:37" (1/1) ... [2020-12-23 06:12:37,952 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:37" (1/1) ... [2020-12-23 06:12:37,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:37" (1/1) ... [2020-12-23 06:12:37,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:37" (1/1) ... [2020-12-23 06:12:37,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:37" (1/1) ... [2020-12-23 06:12:37,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:37" (1/1) ... [2020-12-23 06:12:38,004 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:12:38,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:12:38,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:12:38,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:12:38,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:12:38,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:12:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:12:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-23 06:12:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 06:12:38,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-12-23 06:12:38,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:12:38,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:12:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:12:38,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:12:38,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:12:38,750 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2020-12-23 06:12:38,754 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:12:38 BoogieIcfgContainer [2020-12-23 06:12:38,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:12:38,759 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:12:38,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:12:38,764 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:12:38,764 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:12:37" (1/3) ... [2020-12-23 06:12:38,765 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704d2496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:12:38, skipping insertion in model container [2020-12-23 06:12:38,765 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:12:37" (2/3) ... [2020-12-23 06:12:38,766 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@704d2496 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:12:38, skipping insertion in model container [2020-12-23 06:12:38,766 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:12:38" (3/3) ... [2020-12-23 06:12:38,769 INFO L111 eAbstractionObserver]: Analyzing ICFG float_req_bl_1072b.c [2020-12-23 06:12:38,777 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:12:38,786 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:12:38,808 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:12:38,853 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:12:38,853 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:12:38,854 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:12:38,854 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:12:38,854 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:12:38,854 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:12:38,854 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:12:38,854 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:12:38,874 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-12-23 06:12:38,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-23 06:12:38,884 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:38,885 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:38,886 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:38,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:38,900 INFO L82 PathProgramCache]: Analyzing trace with hash -1668952722, now seen corresponding path program 1 times [2020-12-23 06:12:38,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:38,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633428171] [2020-12-23 06:12:38,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:12:39,081 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 06:12:39,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633428171] [2020-12-23 06:12:39,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:12:39,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-23 06:12:39,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086910152] [2020-12-23 06:12:39,089 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-23 06:12:39,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:12:39,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-23 06:12:39,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-23 06:12:39,108 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-12-23 06:12:39,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:12:39,128 INFO L93 Difference]: Finished difference Result 54 states and 84 transitions. [2020-12-23 06:12:39,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-23 06:12:39,129 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-12-23 06:12:39,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:12:39,140 INFO L225 Difference]: With dead ends: 54 [2020-12-23 06:12:39,140 INFO L226 Difference]: Without dead ends: 25 [2020-12-23 06:12:39,143 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 06:12:39,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-23 06:12:39,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-12-23 06:12:39,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-12-23 06:12:39,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-12-23 06:12:39,181 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 13 [2020-12-23 06:12:39,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:12:39,181 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-12-23 06:12:39,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-23 06:12:39,182 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-12-23 06:12:39,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-23 06:12:39,182 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:39,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:39,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:12:39,183 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:39,184 INFO L82 PathProgramCache]: Analyzing trace with hash -698107015, now seen corresponding path program 1 times [2020-12-23 06:12:39,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:39,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65102345] [2020-12-23 06:12:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 06:12:39,302 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 06:12:39,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65102345] [2020-12-23 06:12:39,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 06:12:39,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 06:12:39,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704964672] [2020-12-23 06:12:39,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 06:12:39,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 06:12:39,306 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 06:12:39,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 06:12:39,306 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states. [2020-12-23 06:12:39,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 06:12:39,391 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2020-12-23 06:12:39,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 06:12:39,392 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-12-23 06:12:39,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 06:12:39,393 INFO L225 Difference]: With dead ends: 51 [2020-12-23 06:12:39,393 INFO L226 Difference]: Without dead ends: 39 [2020-12-23 06:12:39,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 06:12:39,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-12-23 06:12:39,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28. [2020-12-23 06:12:39,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-12-23 06:12:39,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-12-23 06:12:39,401 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2020-12-23 06:12:39,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 06:12:39,401 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-12-23 06:12:39,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 06:12:39,402 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-12-23 06:12:39,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-23 06:12:39,403 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:12:39,403 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-23 06:12:39,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 06:12:39,403 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:12:39,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:12:39,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1571195850, now seen corresponding path program 1 times [2020-12-23 06:12:39,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:12:39,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12766400] [2020-12-23 06:12:39,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:12:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:12:39,468 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:12:39,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:12:39,525 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:12:39,563 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:12:39,563 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:12:39,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 06:12:39,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:12:39 BoogieIcfgContainer [2020-12-23 06:12:39,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:12:39,605 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:12:39,605 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:12:39,605 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:12:39,606 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:12:38" (3/4) ... [2020-12-23 06:12:39,610 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:12:39,610 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:12:39,613 INFO L168 Benchmark]: Toolchain (without parser) took 2011.78 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 85.3 MB in the end (delta: 40.9 MB). Peak memory consumption was 42.4 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:39,614 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:12:39,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.85 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 115.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:39,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 50.96 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 113.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:39,617 INFO L168 Benchmark]: Boogie Preprocessor took 78.26 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 111.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:39,618 INFO L168 Benchmark]: RCFGBuilder took 743.78 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 123.1 MB in the end (delta: -11.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:39,619 INFO L168 Benchmark]: TraceAbstraction took 844.78 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 85.8 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:39,620 INFO L168 Benchmark]: Witness Printer took 5.68 ms. Allocated memory is still 151.0 MB. Free memory was 85.8 MB in the beginning and 85.3 MB in the end (delta: 526.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:12:39,625 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 271.85 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 115.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 50.96 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 113.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 78.26 ms. Allocated memory is still 151.0 MB. Free memory was 113.4 MB in the beginning and 111.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 743.78 ms. Allocated memory is still 151.0 MB. Free memory was 111.5 MB in the beginning and 123.1 MB in the end (delta: -11.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 844.78 ms. Allocated memory is still 151.0 MB. Free memory was 122.5 MB in the beginning and 85.8 MB in the end (delta: 36.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. * Witness Printer took 5.68 ms. Allocated memory is still 151.0 MB. Free memory was 85.8 MB in the beginning and 85.3 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: 68]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryArithmeticFLOAToperation at line 63, overapproximation of bitwiseAnd at line 52. Possible FailurePath: [L63] float x = -1.0f / 0.0f; [L14] __int32_t signbit, w, exponent_less_127; [L16] ieee_float_shape_type gf_u; [L17] gf_u.value = (x) [L18] EXPR gf_u.word [L18] (w) = gf_u.word [L20] signbit = w & 0x80000000 [L21] exponent_less_127 = ((w & 0x7f800000) >> 23) - 127 [L22] COND TRUE exponent_less_127 < 23 [L23] COND TRUE exponent_less_127 < 0 [L26] ieee_float_shape_type sf_u; [L27] sf_u.word = (signbit) [L28] EXPR sf_u.value [L28] (x) = sf_u.value [L41] return x; [L64] float res = trunc_float(x); [L46] __int32_t ix; [L48] ieee_float_shape_type gf_u; [L49] gf_u.value = (x) [L50] EXPR gf_u.word [L50] (ix) = gf_u.word [L52] ix &= 0x7fffffff [L53] return ((ix) == 0x7f800000L); [L67] COND TRUE !isinf_float(res) [L68] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 25 SDslu, 42 SDs, 0 SdLazy, 18 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred 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, 2 MinimizatonAttempts, 11 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 480 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...