java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-2989841 [2019-08-10 01:27:49,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-10 01:27:49,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-10 01:27:49,454 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-10 01:27:49,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-10 01:27:49,455 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-10 01:27:49,456 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-10 01:27:49,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-10 01:27:49,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-10 01:27:49,461 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-10 01:27:49,462 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-10 01:27:49,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-10 01:27:49,463 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-10 01:27:49,464 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-10 01:27:49,465 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-10 01:27:49,466 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-10 01:27:49,467 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-10 01:27:49,468 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-10 01:27:49,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-10 01:27:49,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-10 01:27:49,473 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-10 01:27:49,474 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-10 01:27:49,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-10 01:27:49,476 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-10 01:27:49,478 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-10 01:27:49,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-10 01:27:49,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-10 01:27:49,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-10 01:27:49,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-10 01:27:49,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-10 01:27:49,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-10 01:27:49,486 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-10 01:27:49,486 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-10 01:27:49,486 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-10 01:27:49,487 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-10 01:27:49,488 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-10 01:27:49,489 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-08-10 01:27:49,503 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-10 01:27:49,503 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-10 01:27:49,505 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-10 01:27:49,505 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-10 01:27:49,505 INFO L138 SettingsManager]: * Use SBE=true [2019-08-10 01:27:49,505 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-10 01:27:49,505 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-10 01:27:49,506 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-10 01:27:49,506 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-10 01:27:49,506 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-10 01:27:49,506 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-10 01:27:49,506 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-10 01:27:49,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-10 01:27:49,507 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-10 01:27:49,507 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-10 01:27:49,507 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-10 01:27:49,507 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-10 01:27:49,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-10 01:27:49,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-10 01:27:49,508 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-10 01:27:49,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-10 01:27:49,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-10 01:27:49,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-10 01:27:49,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-10 01:27:49,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-10 01:27:49,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-10 01:27:49,511 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-10 01:27:49,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-10 01:27:49,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-10 01:27:49,562 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-10 01:27:49,575 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-10 01:27:49,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-10 01:27:49,579 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-10 01:27:49,580 INFO L275 PluginConnector]: CDTParser initialized [2019-08-10 01:27:49,580 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2019-08-10 01:27:49,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b23ed4f22/800f994b35e64704a1c8f6b30d6e4192/FLAG735c4de30 [2019-08-10 01:27:50,081 INFO L306 CDTParser]: Found 1 translation units. [2019-08-10 01:27:50,084 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2019-08-10 01:27:50,095 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b23ed4f22/800f994b35e64704a1c8f6b30d6e4192/FLAG735c4de30 [2019-08-10 01:27:50,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b23ed4f22/800f994b35e64704a1c8f6b30d6e4192 [2019-08-10 01:27:50,471 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-10 01:27:50,473 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-10 01:27:50,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-10 01:27:50,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-10 01:27:50,477 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-10 01:27:50,478 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.08 01:27:50" (1/1) ... [2019-08-10 01:27:50,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40bd77ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 01:27:50, skipping insertion in model container [2019-08-10 01:27:50,481 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.08 01:27:50" (1/1) ... [2019-08-10 01:27:50,489 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-10 01:27:50,513 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-10 01:27:50,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-10 01:27:50,736 INFO L188 MainTranslator]: Completed pre-run [2019-08-10 01:27:50,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-10 01:27:50,867 INFO L192 MainTranslator]: Completed translation [2019-08-10 01:27:50,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 01:27:50 WrapperNode [2019-08-10 01:27:50,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-10 01:27:50,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-10 01:27:50,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-10 01:27:50,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-10 01:27:50,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 01:27:50" (1/1) ... [2019-08-10 01:27:50,878 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 01:27:50" (1/1) ... [2019-08-10 01:27:50,884 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 01:27:50" (1/1) ... [2019-08-10 01:27:50,884 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 01:27:50" (1/1) ... [2019-08-10 01:27:50,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 01:27:50" (1/1) ... [2019-08-10 01:27:50,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 01:27:50" (1/1) ... [2019-08-10 01:27:50,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 01:27:50" (1/1) ... [2019-08-10 01:27:50,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-10 01:27:50,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-10 01:27:50,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-10 01:27:50,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-10 01:27:50,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.08 01:27:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2019-08-10 01:27:50,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-10 01:27:50,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-10 01:27:50,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-10 01:27:50,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-10 01:27:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-08-10 01:27:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-08-10 01:27:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-08-10 01:27:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2019-08-10 01:27:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-10 01:27:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-10 01:27:50,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-10 01:27:51,182 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-10 01:27:51,182 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-10 01:27:51,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.08 01:27:51 BoogieIcfgContainer [2019-08-10 01:27:51,184 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-10 01:27:51,192 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-10 01:27:51,192 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-10 01:27:51,193 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-10 01:27:51,194 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.08 01:27:51" (1/1) ... [2019-08-10 01:27:51,598 WARN L88 terpretationObserver]: Some locations of interest might be reachable, see reported results. [2019-08-10 01:27:51,612 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-10 01:27:51,616 INFO L168 Benchmark]: Toolchain (without parser) took 1141.55 ms. Allocated memory was 139.5 MB in the beginning and 198.7 MB in the end (delta: 59.2 MB). Free memory was 86.7 MB in the beginning and 134.7 MB in the end (delta: -48.0 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2019-08-10 01:27:51,618 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 105.5 MB in the beginning and 105.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-10 01:27:51,619 INFO L168 Benchmark]: CACSL2BoogieTranslator took 394.30 ms. Allocated memory was 139.5 MB in the beginning and 198.7 MB in the end (delta: 59.2 MB). Free memory was 86.5 MB in the beginning and 176.2 MB in the end (delta: -89.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-08-10 01:27:51,620 INFO L168 Benchmark]: Boogie Preprocessor took 29.26 ms. Allocated memory is still 198.7 MB. Free memory was 176.2 MB in the beginning and 175.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. [2019-08-10 01:27:51,623 INFO L168 Benchmark]: RCFGBuilder took 286.91 ms. Allocated memory is still 198.7 MB. Free memory was 174.4 MB in the beginning and 160.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2019-08-10 01:27:51,623 INFO L168 Benchmark]: Symbolic Interpretation took 420.45 ms. Allocated memory is still 198.7 MB. Free memory was 160.1 MB in the beginning and 134.7 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2019-08-10 01:27:51,629 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.symbolicinterpretation: - UnprovableResult [Line: 96]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Interpreter reached this location of interest. Location might be reachable. Predicate is 474#(and (= main_~__tmp_2~0 main_~__VERIFIER_assert__cond~0) (or (and (= 1 main_~main____CPAchecker_TMP_0~0) (or (and (= main_~SqrtR____CPAchecker_TMP_0~0 main_~SqrtR__cond~0) (= main_~SqrtR__cond~0 0) (= main_~SqrtR__i~0 0) (= ~__return_125~0 main_~main__r~0)) (and (or (= main_~SqrtR____CPAchecker_TMP_1~0 0) (= main_~SqrtR____CPAchecker_TMP_1~0 1)) (= main_~SqrtR__cond~0 0) (= (+ main_~SqrtR____CPAchecker_TMP_2~0 1) main_~SqrtR__i~0) (= main_~SqrtR____CPAchecker_TMP_1~0 main_~SqrtR__cond~0) (= ~__return_125~0 main_~main__r~0)))) (and (= main_~SqrtR__cond~0 0) (= 0 main_~main____CPAchecker_TMP_0~0))) (= main_~__VERIFIER_assert__cond~0 0) (= main_~__tmp_2~0 main_~main____CPAchecker_TMP_0~0)). Possible FailurePath: * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 139.5 MB. Free memory was 105.5 MB in the beginning and 105.3 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 394.30 ms. Allocated memory was 139.5 MB in the beginning and 198.7 MB in the end (delta: 59.2 MB). Free memory was 86.5 MB in the beginning and 176.2 MB in the end (delta: -89.7 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.26 ms. Allocated memory is still 198.7 MB. Free memory was 176.2 MB in the beginning and 175.0 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 286.91 ms. Allocated memory is still 198.7 MB. Free memory was 174.4 MB in the beginning and 160.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 420.45 ms. Allocated memory is still 198.7 MB. Free memory was 160.1 MB in the beginning and 134.7 MB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...