/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/sqrt_Householder_constant.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-178dd20 [2021-01-06 16:01:50,785 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-01-06 16:01:50,787 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-01-06 16:01:50,821 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-01-06 16:01:50,822 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-01-06 16:01:50,823 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-01-06 16:01:50,825 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-01-06 16:01:50,827 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-01-06 16:01:50,830 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-01-06 16:01:50,831 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-01-06 16:01:50,832 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-01-06 16:01:50,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-01-06 16:01:50,834 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-01-06 16:01:50,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-01-06 16:01:50,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-01-06 16:01:50,852 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-01-06 16:01:50,854 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-01-06 16:01:50,855 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-01-06 16:01:50,860 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-01-06 16:01:50,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-01-06 16:01:50,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-01-06 16:01:50,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-01-06 16:01:50,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-01-06 16:01:50,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-01-06 16:01:50,884 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-01-06 16:01:50,884 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-01-06 16:01:50,884 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-01-06 16:01:50,885 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-01-06 16:01:50,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-01-06 16:01:50,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-01-06 16:01:50,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-01-06 16:01:50,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-01-06 16:01:50,894 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-01-06 16:01:50,896 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-01-06 16:01:50,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-01-06 16:01:50,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-01-06 16:01:50,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-01-06 16:01:50,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-01-06 16:01:50,902 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-01-06 16:01:50,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-01-06 16:01:50,908 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-01-06 16:01:50,909 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 16:01:50,954 INFO L113 SettingsManager]: Loading preferences was successful [2021-01-06 16:01:50,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-01-06 16:01:50,959 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-01-06 16:01:50,959 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-01-06 16:01:50,959 INFO L138 SettingsManager]: * Use SBE=true [2021-01-06 16:01:50,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-01-06 16:01:50,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-01-06 16:01:50,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-01-06 16:01:50,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-01-06 16:01:50,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-01-06 16:01:50,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-01-06 16:01:50,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-01-06 16:01:50,962 INFO L138 SettingsManager]: * Use constant arrays=true [2021-01-06 16:01:50,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-01-06 16:01:50,962 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-01-06 16:01:50,962 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-01-06 16:01:50,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-01-06 16:01:50,963 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-01-06 16:01:50,963 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-01-06 16:01:50,963 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-01-06 16:01:50,963 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-01-06 16:01:50,964 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-01-06 16:01:50,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-01-06 16:01:50,964 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-01-06 16:01:50,964 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-01-06 16:01:50,964 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-01-06 16:01:51,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-01-06 16:01:51,416 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-01-06 16:01:51,419 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-01-06 16:01:51,421 INFO L271 PluginConnector]: Initializing CDTParser... [2021-01-06 16:01:51,424 INFO L275 PluginConnector]: CDTParser initialized [2021-01-06 16:01:51,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2021-01-06 16:01:51,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0c64ebf21/d08c9b780a9c449d80f88a2a51262ecd/FLAGf631b7921 [2021-01-06 16:01:52,157 INFO L306 CDTParser]: Found 1 translation units. [2021-01-06 16:01:52,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/float-benchs/sqrt_Householder_constant.c [2021-01-06 16:01:52,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0c64ebf21/d08c9b780a9c449d80f88a2a51262ecd/FLAGf631b7921 [2021-01-06 16:01:52,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/0c64ebf21/d08c9b780a9c449d80f88a2a51262ecd [2021-01-06 16:01:52,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-01-06 16:01:52,549 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-01-06 16:01:52,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-01-06 16:01:52,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-01-06 16:01:52,555 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-01-06 16:01:52,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:01:52" (1/1) ... [2021-01-06 16:01:52,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a735792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:52, skipping insertion in model container [2021-01-06 16:01:52,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.01 04:01:52" (1/1) ... [2021-01-06 16:01:52,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-01-06 16:01:52,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-01-06 16:01:52,733 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/sqrt_Householder_constant.c[831,844] left hand side expression in assignment: lhs: VariableLHS[~xn~0,] left hand side expression in assignment: lhs: VariableLHS[~xn~0,] left hand side expression in assignment: lhs: VariableLHS[~xnp1~0,] left hand side expression in assignment: lhs: VariableLHS[~residu~0,] left hand side expression in assignment: lhs: VariableLHS[~lsup~0,] left hand side expression in assignment: lhs: VariableLHS[~linf~0,] left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~xnp1~0,] left hand side expression in assignment: lhs: VariableLHS[~residu~0,] left hand side expression in assignment: lhs: VariableLHS[~xn~0,] left hand side expression in assignment: lhs: VariableLHS[~lsup~0,] left hand side expression in assignment: lhs: VariableLHS[~linf~0,] left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 16:01:52,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:01:52,772 INFO L203 MainTranslator]: Completed pre-run [2021-01-06 16:01:52,785 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/sqrt_Householder_constant.c[831,844] left hand side expression in assignment: lhs: VariableLHS[~xn~0,] left hand side expression in assignment: lhs: VariableLHS[~xn~0,] left hand side expression in assignment: lhs: VariableLHS[~xnp1~0,] left hand side expression in assignment: lhs: VariableLHS[~residu~0,] left hand side expression in assignment: lhs: VariableLHS[~lsup~0,] left hand side expression in assignment: lhs: VariableLHS[~linf~0,] left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~i~0,] left hand side expression in assignment: lhs: VariableLHS[~xnp1~0,] left hand side expression in assignment: lhs: VariableLHS[~residu~0,] left hand side expression in assignment: lhs: VariableLHS[~xn~0,] left hand side expression in assignment: lhs: VariableLHS[~lsup~0,] left hand side expression in assignment: lhs: VariableLHS[~linf~0,] left hand side expression in assignment: lhs: VariableLHS[~cond~0,] left hand side expression in assignment: lhs: VariableLHS[~d~0,] left hand side expression in assignment: lhs: VariableLHS[~r~0,] [2021-01-06 16:01:52,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-01-06 16:01:52,812 INFO L208 MainTranslator]: Completed translation [2021-01-06 16:01:52,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:52 WrapperNode [2021-01-06 16:01:52,812 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-01-06 16:01:52,814 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-01-06 16:01:52,814 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-01-06 16:01:52,814 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-01-06 16:01:52,822 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:52" (1/1) ... [2021-01-06 16:01:52,831 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:52" (1/1) ... [2021-01-06 16:01:52,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-01-06 16:01:52,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-01-06 16:01:52,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-01-06 16:01:52,851 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-01-06 16:01:52,858 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:52" (1/1) ... [2021-01-06 16:01:52,858 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:52" (1/1) ... [2021-01-06 16:01:52,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:52" (1/1) ... [2021-01-06 16:01:52,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:52" (1/1) ... [2021-01-06 16:01:52,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:52" (1/1) ... [2021-01-06 16:01:52,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:52" (1/1) ... [2021-01-06 16:01:52,872 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:52" (1/1) ... [2021-01-06 16:01:52,875 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-01-06 16:01:52,876 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-01-06 16:01:52,876 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-01-06 16:01:52,876 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-01-06 16:01:52,877 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:52" (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 16:01:52,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-01-06 16:01:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-01-06 16:01:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-01-06 16:01:52,970 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-01-06 16:01:53,294 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-01-06 16:01:53,294 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2021-01-06 16:01:53,299 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:53 BoogieIcfgContainer [2021-01-06 16:01:53,300 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-01-06 16:01:53,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-01-06 16:01:53,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-01-06 16:01:53,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-01-06 16:01:53,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.01 04:01:52" (1/3) ... [2021-01-06 16:01:53,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325bbf67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:01:53, skipping insertion in model container [2021-01-06 16:01:53,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.01 04:01:52" (2/3) ... [2021-01-06 16:01:53,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@325bbf67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.01 04:01:53, skipping insertion in model container [2021-01-06 16:01:53,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:53" (3/3) ... [2021-01-06 16:01:53,316 INFO L111 eAbstractionObserver]: Analyzing ICFG sqrt_Householder_constant.c [2021-01-06 16:01:53,323 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-01-06 16:01:53,329 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-01-06 16:01:53,354 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-01-06 16:01:53,422 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-01-06 16:01:53,423 INFO L378 AbstractCegarLoop]: Hoare is true [2021-01-06 16:01:53,423 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-01-06 16:01:53,423 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-01-06 16:01:53,423 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-01-06 16:01:53,423 INFO L382 AbstractCegarLoop]: Difference is false [2021-01-06 16:01:53,424 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-01-06 16:01:53,424 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-01-06 16:01:53,442 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2021-01-06 16:01:53,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-01-06 16:01:53,458 INFO L414 BasicCegarLoop]: Found error trace [2021-01-06 16:01:53,479 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-01-06 16:01:53,480 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-01-06 16:01:53,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-01-06 16:01:53,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1706227183, now seen corresponding path program 1 times [2021-01-06 16:01:53,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-01-06 16:01:53,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594401766] [2021-01-06 16:01:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-01-06 16:01:53,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:01:53,718 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:01:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-01-06 16:01:53,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-01-06 16:01:53,812 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-01-06 16:01:53,812 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-01-06 16:01:53,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-01-06 16:01:53,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.01 04:01:53 BoogieIcfgContainer [2021-01-06 16:01:53,870 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-01-06 16:01:53,873 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-01-06 16:01:53,874 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-01-06 16:01:53,874 INFO L275 PluginConnector]: Witness Printer initialized [2021-01-06 16:01:53,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.01 04:01:53" (3/4) ... [2021-01-06 16:01:53,889 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-01-06 16:01:53,890 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-01-06 16:01:53,893 INFO L168 Benchmark]: Toolchain (without parser) took 1342.38 ms. Allocated memory is still 166.7 MB. Free memory was 141.6 MB in the beginning and 138.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:53,896 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 166.7 MB. Free memory is still 138.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:01:53,900 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.82 ms. Allocated memory is still 166.7 MB. Free memory was 141.4 MB in the beginning and 131.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:53,901 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.05 ms. Allocated memory is still 166.7 MB. Free memory was 131.0 MB in the beginning and 129.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:53,903 INFO L168 Benchmark]: Boogie Preprocessor took 24.33 ms. Allocated memory is still 166.7 MB. Free memory was 129.4 MB in the beginning and 128.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:53,905 INFO L168 Benchmark]: RCFGBuilder took 424.20 ms. Allocated memory is still 166.7 MB. Free memory was 128.4 MB in the beginning and 115.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-01-06 16:01:53,906 INFO L168 Benchmark]: TraceAbstraction took 567.80 ms. Allocated memory is still 166.7 MB. Free memory was 114.8 MB in the beginning and 138.4 MB in the end (delta: -23.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:01:53,907 INFO L168 Benchmark]: Witness Printer took 16.51 ms. Allocated memory is still 166.7 MB. Free memory is still 138.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-01-06 16:01:53,920 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 166.7 MB. Free memory is still 138.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 261.82 ms. Allocated memory is still 166.7 MB. Free memory was 141.4 MB in the beginning and 131.2 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 36.05 ms. Allocated memory is still 166.7 MB. Free memory was 131.0 MB in the beginning and 129.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 24.33 ms. Allocated memory is still 166.7 MB. Free memory was 129.4 MB in the beginning and 128.4 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 424.20 ms. Allocated memory is still 166.7 MB. Free memory was 128.4 MB in the beginning and 115.2 MB in the end (delta: 13.2 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 567.80 ms. Allocated memory is still 166.7 MB. Free memory was 114.8 MB in the beginning and 138.4 MB in the end (delta: -23.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 16.51 ms. Allocated memory is still 166.7 MB. Free memory is still 138.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 20]: 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 55, overapproximation of someUnaryDOUBLEoperation at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 44. Possible FailurePath: [L22] double _EPS = 1e-6; VAL [_EPS=1/1000000] [L49] double d, r; [L51] d = 1. VAL [_EPS=1/1000000] [L51] COND TRUE d <= 20. [L26] double xn, xnp1, residu, lsup, linf; [L27] int i, cond; VAL [_EPS=1/1000000] [L28] COND TRUE Input <= 1.0 [L28] xn = 1.0 VAL [_EPS=1/1000000] [L29] xnp1 = xn [L30] residu = 2.0*_EPS*(xn+xnp1) [L31] lsup = _EPS * (xn+xnp1) [L32] linf = -lsup [L33] cond = ((residu > lsup) || (residu < linf)) [L34] i = 0 VAL [_EPS=1/1000000] [L35] COND FALSE !(\read(cond)) VAL [_EPS=1/1000000] [L44] return 1.0 / xnp1; VAL [_EPS=1/1000000] [L53] r = SqrtR(d) [L20] COND TRUE !(cond) VAL [_EPS=1/1000000] [L20] reach_error() VAL [_EPS=1/1000000] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 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=16occurred 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...