/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/inv_sqrt_Quake.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:01:24,519 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:01:24,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:01:24,582 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:01:24,583 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:01:24,586 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:01:24,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:01:24,595 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:01:24,598 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:01:24,604 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:01:24,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:01:24,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:01:24,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:01:24,613 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:01:24,615 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:01:24,617 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:01:24,618 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:01:24,622 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:01:24,629 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:01:24,633 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:01:24,637 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:01:24,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:01:24,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:01:24,643 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:01:24,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 16:01:24,653 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 16:01:24,653 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 16:01:24,654 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 16:01:24,654 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 16:01:24,657 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 16:01:24,657 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:01:24,658 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:01:24,660 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:01:24,661 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:01:24,662 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:01:24,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:01:24,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:01:24,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:01:24,663 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:01:24,664 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:01:24,665 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:01:24,666 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-01-06 16:01:24,713 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:01:24,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:01:24,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:01:24,719 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:01:24,719 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:01:24,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:01:24,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:01:24,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:01:24,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:01:24,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:01:24,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:01:24,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:01:24,721 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:01:24,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:01:24,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:01:24,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:01:24,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:01:24,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:01:24,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:01:24,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:01:24,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:01:24,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:01:24,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:01:24,724 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:01:24,724 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:01:24,724 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:01:25,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:01:25,150 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:01:25,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:01:25,155 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:01:25,156 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:01:25,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2021-01-06 16:01:25,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/91eeb8072/f4cc6ab4f3974368b7bec2a5da9b4870/FLAG20efb8a5e [2021-01-06 16:01:25,811 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:01:25,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/inv_sqrt_Quake.c.v+cfa-reducer.c [2021-01-06 16:01:25,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/91eeb8072/f4cc6ab4f3974368b7bec2a5da9b4870/FLAG20efb8a5e [2021-01-06 16:01:26,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/91eeb8072/f4cc6ab4f3974368b7bec2a5da9b4870 [2021-01-06 16:01:26,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:01:26,180 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:01:26,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:01:26,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:01:26,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:01:26,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:01:26" (1/1) ... [2021-01-06 16:01:26,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d4502c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:26, skipping insertion in model container [2021-01-06 16:01:26,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:01:26" (1/1) ... [2021-01-06 16:01:26,202 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:01:26,226 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__a~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~InvSqrt__x~0,] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~InvSqrt__i~0,],f] left hand side expression in assignment: lhs: StructLHS[VariableLHS[~InvSqrt__i~0,],i] left hand side expression in assignment: lhs: VariableLHS[~InvSqrt__x~0,] left hand side expression in assignment: lhs: VariableLHS[~InvSqrt__x~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_72~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__r~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~0,] [2021-01-06 16:01:26,463 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/inv_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] left hand side expression in assignment: lhs: VariableLHS[~__return_87~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~0,] [2021-01-06 16:01:26,470 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:01:26,483 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__a~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~InvSqrt__x~0,] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#InvSqrt__i~0,],base],StructAccessExpression[IdentifierExpression[~#InvSqrt__i~0,],offset]]] left hand side expression in assignment: address: StructConstructor[[base,offset],[StructAccessExpression[IdentifierExpression[~#InvSqrt__i~0,],base],StructAccessExpression[IdentifierExpression[~#InvSqrt__i~0,],offset]]] left hand side expression in assignment: lhs: VariableLHS[~InvSqrt__x~0,] left hand side expression in assignment: lhs: VariableLHS[~InvSqrt__x~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_72~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__r~0,] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_2~0,] left hand side expression in assignment: lhs: VariableLHS[~__VERIFIER_assert__cond~0,] [2021-01-06 16:01:26,510 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/inv_sqrt_Quake.c.v+cfa-reducer.c[1479,1492] left hand side expression in assignment: lhs: VariableLHS[~__return_87~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main____CPAchecker_TMP_1~0,] [2021-01-06 16:01:26,513 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:01:26,532 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:01:26,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:26 WrapperNode [2021-01-06 16:01:26,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:01:26,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:01:26,535 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:01:26,535 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:01:26,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:26" (1/1) ... [2021-01-06 16:01:26,556 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:26" (1/1) ... [2021-01-06 16:01:26,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:01:26,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:01:26,584 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:01:26,584 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:01:26,594 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:26" (1/1) ... [2021-01-06 16:01:26,594 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:26" (1/1) ... [2021-01-06 16:01:26,597 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:26" (1/1) ... [2021-01-06 16:01:26,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:26" (1/1) ... [2021-01-06 16:01:26,605 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:26" (1/1) ... [2021-01-06 16:01:26,608 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:26" (1/1) ... [2021-01-06 16:01:26,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:26" (1/1) ... [2021-01-06 16:01:26,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:01:26,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:01:26,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:01:26,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:01:26,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:01:26,733 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:01:26,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:01:26,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-01-06 16:01:26,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-01-06 16:01:26,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-01-06 16:01:26,734 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:01:26,734 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:01:26,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-01-06 16:01:26,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-01-06 16:01:27,171 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:01:27,171 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-01-06 16:01:27,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:27 BoogieIcfgContainer [2021-01-06 16:01:27,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:01:27,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:01:27,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:01:27,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:01:27,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:01:26" (1/3) ... [2021-01-06 16:01:27,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d954d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:01:27, skipping insertion in model container [2021-01-06 16:01:27,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:26" (2/3) ... [2021-01-06 16:01:27,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17d954d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:01:27, skipping insertion in model container [2021-01-06 16:01:27,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:27" (3/3) ... [2021-01-06 16:01:27,193 INFO L111 eAbstractionObserver]: Analyzing ICFG inv_sqrt_Quake.c.v+cfa-reducer.c [2021-01-06 16:01:27,201 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:01:27,207 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:01:27,230 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:01:27,259 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:01:27,259 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:01:27,260 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:01:27,260 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:01:27,260 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:01:27,260 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:01:27,260 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:01:27,261 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:01:27,276 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2021-01-06 16:01:27,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 16:01:27,282 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:27,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:27,283 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:27,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:27,291 INFO L82 PathProgramCache]: Analyzing trace with hash -2137295023, now seen corresponding path program 1 times [2021-01-06 16:01:27,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:27,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771434474] [2021-01-06 16:01:27,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:27,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:01:27,447 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:01:27,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:01:27,479 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:01:27,510 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:01:27,512 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:01:27,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:01:27,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:01:27 BoogieIcfgContainer [2021-01-06 16:01:27,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:01:27,552 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:01:27,552 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:01:27,552 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:01:27,553 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:27" (3/4) ... [2021-01-06 16:01:27,557 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:01:27,557 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:01:27,560 INFO L168 Benchmark]: Toolchain (without parser) took 1379.83 ms. Allocated memory is still 164.6 MB. Free memory was 139.1 MB in the beginning and 126.3 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:27,560 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 164.6 MB. Free memory is still 144.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:01:27,562 INFO L168 Benchmark]: CACSL2BoogieTranslator took 349.88 ms. Allocated memory is still 164.6 MB. Free memory was 139.0 MB in the beginning and 128.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:27,562 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.10 ms. Allocated memory is still 164.6 MB. Free memory was 128.4 MB in the beginning and 127.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:27,563 INFO L168 Benchmark]: Boogie Preprocessor took 29.11 ms. Allocated memory is still 164.6 MB. Free memory was 126.9 MB in the beginning and 125.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:27,564 INFO L168 Benchmark]: RCFGBuilder took 563.62 ms. Allocated memory is still 164.6 MB. Free memory was 125.7 MB in the beginning and 140.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:27,565 INFO L168 Benchmark]: TraceAbstraction took 371.97 ms. Allocated memory is still 164.6 MB. Free memory was 140.0 MB in the beginning and 126.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:27,566 INFO L168 Benchmark]: Witness Printer took 5.52 ms. Allocated memory is still 164.6 MB. Free memory was 126.9 MB in the beginning and 126.3 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:01:27,571 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 164.6 MB. Free memory is still 144.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 349.88 ms. Allocated memory is still 164.6 MB. Free memory was 139.0 MB in the beginning and 128.4 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 48.10 ms. Allocated memory is still 164.6 MB. Free memory was 128.4 MB in the beginning and 127.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 29.11 ms. Allocated memory is still 164.6 MB. Free memory was 126.9 MB in the beginning and 125.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 563.62 ms. Allocated memory is still 164.6 MB. Free memory was 125.7 MB in the beginning and 140.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 371.97 ms. Allocated memory is still 164.6 MB. Free memory was 140.0 MB in the beginning and 126.9 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Witness Printer took 5.52 ms. Allocated memory is still 164.6 MB. Free memory was 126.9 MB in the beginning and 126.3 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 59]: 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 46, overapproximation of someBinaryArithmeticDOUBLEoperation at line 37. Possible FailurePath: [L1] int __return_main; [L17] float __return_72; [L18] int __return_87; VAL [__return_72=0, __return_87=0, __return_main=0] [L21] float main__a; [L22] float main__r; [L23] main__a = __VERIFIER_nondet_float() [L24] int main____CPAchecker_TMP_0; VAL [__return_72=0, __return_87=0, __return_main=0] [L25] COND TRUE main__a >= 0.10000000149011612 VAL [__return_72=0, __return_87=0, __return_main=0] [L27] COND TRUE main__a <= 100.0 [L29] main____CPAchecker_TMP_0 = 1 VAL [__return_72=0, __return_87=0, __return_main=0] [L30] COND TRUE main____CPAchecker_TMP_0 != 0 [L33] float __tmp_1; [L34] __tmp_1 = main__a [L35] float InvSqrt__x; [L36] InvSqrt__x = __tmp_1 [L37] float InvSqrt__xhalf = 0.5 * InvSqrt__x; [L38] union float_int InvSqrt__i; [L39] InvSqrt__i.f = InvSqrt__x [L40] EXPR InvSqrt__i.i [L40] InvSqrt__i.i = 1597463007 - ((InvSqrt__i.i) >> 1) [L41] EXPR InvSqrt__i.f [L41] InvSqrt__x = InvSqrt__i.f [L42] InvSqrt__x = InvSqrt__x * (1.5 - ((InvSqrt__xhalf * InvSqrt__x) * InvSqrt__x)) [L43] __return_72 = InvSqrt__x [L44] main__r = __return_72 [L45] int main____CPAchecker_TMP_1; VAL [__return_72=1597463008, __return_87=0, __return_main=0] [L46] COND FALSE !(main__r >= 0.0) VAL [__return_72=1597463008, __return_87=0, __return_main=0] [L72] main____CPAchecker_TMP_1 = 0 VAL [__return_72=1597463008, __return_87=0, __return_main=0] [L53] int __tmp_2; [L54] __tmp_2 = main____CPAchecker_TMP_1 [L55] int __VERIFIER_assert__cond; [L56] __VERIFIER_assert__cond = __tmp_2 VAL [__return_72=1597463008, __return_87=0, __return_main=0] [L57] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_72=1597463008, __return_87=0, __return_main=0] [L59] reach_error() VAL [__return_72=1597463008, __return_87=0, __return_main=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, 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=15occurred 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, 10 NumberOfCodeBlocks, 10 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...