/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-benchs/cast_union_tight.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 06:06:17,248 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 06:06:17,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 06:06:17,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 06:06:17,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 06:06:17,285 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 06:06:17,287 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 06:06:17,289 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 06:06:17,291 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 06:06:17,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 06:06:17,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 06:06:17,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 06:06:17,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 06:06:17,297 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 06:06:17,298 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 06:06:17,300 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 06:06:17,301 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 06:06:17,302 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 06:06:17,304 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 06:06:17,318 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 06:06:17,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 06:06:17,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 06:06:17,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 06:06:17,329 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 06:06:17,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-23 06:06:17,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 06:06:17,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 06:06:17,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 06:06:17,350 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 06:06:17,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 06:06:17,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 06:06:17,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 06:06:17,352 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 06:06:17,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 06:06:17,354 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 06:06:17,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 06:06:17,362 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 06:06:17,408 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 06:06:17,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 06:06:17,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 06:06:17,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 06:06:17,412 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 06:06:17,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 06:06:17,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 06:06:17,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 06:06:17,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 06:06:17,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 06:06:17,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 06:06:17,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 06:06:17,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 06:06:17,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 06:06:17,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 06:06:17,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 06:06:17,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 06:06:17,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 06:06:17,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 06:06:17,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 06:06:17,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 06:06:17,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 06:06:17,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 06:06:17,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 06:06:17,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 06:06:17,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 06:06:17,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 06:06:17,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 06:06:17,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 06:06:17,864 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 06:06:17,865 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 06:06:17,866 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/cast_union_tight.c [2020-12-23 06:06:17,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/52055512d/da7a38bf1ff44bc9adb388fa2dfd29df/FLAGa1e81dbe2 [2020-12-23 06:06:18,510 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 06:06:18,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/cast_union_tight.c [2020-12-23 06:06:18,518 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/52055512d/da7a38bf1ff44bc9adb388fa2dfd29df/FLAGa1e81dbe2 [2020-12-23 06:06:18,900 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/52055512d/da7a38bf1ff44bc9adb388fa2dfd29df [2020-12-23 06:06:18,904 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 06:06:18,907 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 06:06:18,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 06:06:18,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 06:06:18,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 06:06:18,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:06:18" (1/1) ... [2020-12-23 06:06:18,919 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15c7cd6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:06:18, skipping insertion in model container [2020-12-23 06:06:18,919 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 06:06:18" (1/1) ... [2020-12-23 06:06:18,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 06:06:18,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-23 06:06:19,157 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-benchs/cast_union_tight.c[495,508] left hand side expression in assignment: lhs: ArrayLHS[StructLHS[VariableLHS[~x~0,],i],[IntegerLiteral[0]]] left hand side expression in assignment: lhs: ArrayLHS[StructLHS[VariableLHS[~y~0,],i],[IntegerLiteral[0]]] left hand side expression in assignment: lhs: ArrayLHS[StructLHS[VariableLHS[~x~0,],i],[IntegerLiteral[1]]] left hand side expression in assignment: lhs: ArrayLHS[StructLHS[VariableLHS[~y~0,],i],[IntegerLiteral[1]]] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2020-12-23 06:06:19,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:06:19,196 INFO L203 MainTranslator]: Completed pre-run [2020-12-23 06:06:19,207 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-benchs/cast_union_tight.c[495,508] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#x~0,],base],StructAccessExpression[IdentifierExpression[~#x~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#y~0,],base],StructAccessExpression[IdentifierExpression[~#y~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#x~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~#x~0,],offset]]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#y~0,],base],BinaryExpression[ARITHPLUS,IntegerLiteral[4],StructAccessExpression[IdentifierExpression[~#y~0,],offset]]]] left hand side expression in assignment: lhs: VariableLHS[~a~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2020-12-23 06:06:19,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 06:06:19,233 INFO L208 MainTranslator]: Completed translation [2020-12-23 06:06:19,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:06:19 WrapperNode [2020-12-23 06:06:19,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 06:06:19,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 06:06:19,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 06:06:19,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 06:06:19,244 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:06:19" (1/1) ... [2020-12-23 06:06:19,253 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:06:19" (1/1) ... [2020-12-23 06:06:19,274 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 06:06:19,275 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 06:06:19,275 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 06:06:19,275 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 06:06:19,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:06:19" (1/1) ... [2020-12-23 06:06:19,285 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:06:19" (1/1) ... [2020-12-23 06:06:19,288 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:06:19" (1/1) ... [2020-12-23 06:06:19,288 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:06:19" (1/1) ... [2020-12-23 06:06:19,295 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:06:19" (1/1) ... [2020-12-23 06:06:19,297 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:06:19" (1/1) ... [2020-12-23 06:06:19,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:06:19" (1/1) ... [2020-12-23 06:06:19,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 06:06:19,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 06:06:19,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 06:06:19,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 06:06:19,302 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:06:19" (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 06:06:19,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 06:06:19,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 06:06:19,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-12-23 06:06:19,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-23 06:06:19,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 06:06:19,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 06:06:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-23 06:06:19,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-23 06:06:19,731 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 06:06:19,732 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2020-12-23 06:06:19,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:06:19 BoogieIcfgContainer [2020-12-23 06:06:19,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 06:06:19,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 06:06:19,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 06:06:19,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 06:06:19,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 06:06:18" (1/3) ... [2020-12-23 06:06:19,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d71da31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:06:19, skipping insertion in model container [2020-12-23 06:06:19,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 06:06:19" (2/3) ... [2020-12-23 06:06:19,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d71da31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 06:06:19, skipping insertion in model container [2020-12-23 06:06:19,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:06:19" (3/3) ... [2020-12-23 06:06:19,743 INFO L111 eAbstractionObserver]: Analyzing ICFG cast_union_tight.c [2020-12-23 06:06:19,750 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 06:06:19,755 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 06:06:19,777 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 06:06:19,846 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 06:06:19,847 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 06:06:19,847 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 06:06:19,847 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 06:06:19,847 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 06:06:19,847 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 06:06:19,847 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 06:06:19,847 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 06:06:19,862 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-12-23 06:06:19,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-23 06:06:19,868 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 06:06:19,868 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-23 06:06:19,869 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 06:06:19,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 06:06:19,875 INFO L82 PathProgramCache]: Analyzing trace with hash 28692803, now seen corresponding path program 1 times [2020-12-23 06:06:19,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 06:06:19,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259035593] [2020-12-23 06:06:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 06:06:20,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:06:20,054 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:06:20,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-23 06:06:20,123 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-23 06:06:20,165 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-23 06:06:20,166 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-23 06:06:20,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 06:06:20,201 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.12 06:06:20 BoogieIcfgContainer [2020-12-23 06:06:20,201 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-23 06:06:20,205 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-23 06:06:20,205 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-23 06:06:20,206 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-23 06:06:20,206 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 06:06:19" (3/4) ... [2020-12-23 06:06:20,211 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-23 06:06:20,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-23 06:06:20,216 INFO L168 Benchmark]: Toolchain (without parser) took 1306.44 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 120.4 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. [2020-12-23 06:06:20,219 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:06:20,223 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.73 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 115.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-23 06:06:20,225 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.04 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-23 06:06:20,227 INFO L168 Benchmark]: Boogie Preprocessor took 25.59 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:06:20,229 INFO L168 Benchmark]: RCFGBuilder took 432.11 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 99.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-12-23 06:06:20,230 INFO L168 Benchmark]: TraceAbstraction took 466.14 ms. Allocated memory is still 151.0 MB. Free memory was 98.6 MB in the beginning and 121.0 MB in the end (delta: -22.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-23 06:06:20,231 INFO L168 Benchmark]: Witness Printer took 6.30 ms. Allocated memory is still 151.0 MB. Free memory was 121.0 MB in the beginning and 120.4 MB in the end (delta: 531.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-23 06:06:20,249 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 123.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 323.73 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 115.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 39.04 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 113.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 25.59 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 112.6 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 432.11 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 99.0 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 466.14 ms. Allocated memory is still 151.0 MB. Free memory was 98.6 MB in the beginning and 121.0 MB in the end (delta: -22.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 6.30 ms. Allocated memory is still 151.0 MB. Free memory was 121.0 MB in the beginning and 120.4 MB in the end (delta: 531.4 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: 9]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 34, overapproximation of someBinaryArithmeticDOUBLEoperation at line 23, overapproximation of bitwiseXOr at line 22. Possible FailurePath: [L28] int a; [L29] double r; [L31] a = __VERIFIER_nondet_int() [L18] union u x, y; [L19] x.i[0] = 0x43300000 [L20] EXPR x.i[0] [L20] y.i[0] = x.i[0] [L21] x.i[1] = 0x80000000 [L22] EXPR x.i[1] [L22] y.i[1] = i ^ x.i[1] [L23] EXPR y.d [L23] EXPR x.d [L23] return y.d - x.d; [L23] return y.d - x.d; [L23] return y.d - x.d; [L33] r = cast(a) [L9] COND TRUE !(cond) [L9] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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...