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 0.1.24-55cd5f5 [2019-08-14 19:39:47,903 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-14 19:39:47,905 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-14 19:39:47,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-14 19:39:47,918 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-14 19:39:47,919 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-14 19:39:47,920 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-14 19:39:47,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-14 19:39:47,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-14 19:39:47,925 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-14 19:39:47,926 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-14 19:39:47,927 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-14 19:39:47,927 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-14 19:39:47,928 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-14 19:39:47,929 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-14 19:39:47,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-14 19:39:47,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-14 19:39:47,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-14 19:39:47,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-14 19:39:47,935 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-14 19:39:47,937 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-14 19:39:47,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-14 19:39:47,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-14 19:39:47,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-14 19:39:47,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-14 19:39:47,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-14 19:39:47,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-14 19:39:47,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-14 19:39:47,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-14 19:39:47,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-14 19:39:47,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-14 19:39:47,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-14 19:39:47,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-14 19:39:47,946 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-14 19:39:47,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-14 19:39:47,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-14 19:39:47,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-14 19:39:47,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-14 19:39:47,949 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-14 19:39:47,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-14 19:39:47,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-14 19:39:47,951 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 [2019-08-14 19:39:47,965 INFO L113 SettingsManager]: Loading preferences was successful [2019-08-14 19:39:47,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-08-14 19:39:47,966 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-08-14 19:39:47,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-08-14 19:39:47,967 INFO L138 SettingsManager]: * Use SBE=true [2019-08-14 19:39:47,967 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-08-14 19:39:47,967 INFO L138 SettingsManager]: * sizeof long=4 [2019-08-14 19:39:47,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-08-14 19:39:47,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-08-14 19:39:47,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-08-14 19:39:47,968 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-08-14 19:39:47,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-08-14 19:39:47,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-08-14 19:39:47,968 INFO L138 SettingsManager]: * sizeof long double=12 [2019-08-14 19:39:47,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-08-14 19:39:47,969 INFO L138 SettingsManager]: * Use constant arrays=true [2019-08-14 19:39:47,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-08-14 19:39:47,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-08-14 19:39:47,971 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-08-14 19:39:47,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-08-14 19:39:47,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-08-14 19:39:47,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-08-14 19:39:47,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-08-14 19:39:47,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-08-14 19:39:47,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-08-14 19:39:47,973 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-08-14 19:39:47,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-08-14 19:39:47,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-08-14 19:39:47,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-08-14 19:39:48,024 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-14 19:39:48,036 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-14 19:39:48,039 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-14 19:39:48,040 INFO L271 PluginConnector]: Initializing CDTParser... [2019-08-14 19:39:48,041 INFO L275 PluginConnector]: CDTParser initialized [2019-08-14 19:39:48,041 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2019-08-14 19:39:48,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd056637/b127bdab9f74427da80f390c37e183b8/FLAG636a07621 [2019-08-14 19:39:48,641 INFO L306 CDTParser]: Found 1 translation units. [2019-08-14 19:39:48,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/float-benchs/sqrt_Householder_constant.c.p+cfa-reducer.c [2019-08-14 19:39:48,651 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd056637/b127bdab9f74427da80f390c37e183b8/FLAG636a07621 [2019-08-14 19:39:49,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd056637/b127bdab9f74427da80f390c37e183b8 [2019-08-14 19:39:49,029 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-14 19:39:49,030 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-08-14 19:39:49,031 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-08-14 19:39:49,032 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-08-14 19:39:49,035 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-08-14 19:39:49,036 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 07:39:49" (1/1) ... [2019-08-14 19:39:49,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c11dfdf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 07:39:49, skipping insertion in model container [2019-08-14 19:39:49,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.08 07:39:49" (1/1) ... [2019-08-14 19:39:49,047 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-08-14 19:39:49,075 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-08-14 19:39:49,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-14 19:39:49,267 INFO L188 MainTranslator]: Completed pre-run [2019-08-14 19:39:49,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-08-14 19:39:49,404 INFO L192 MainTranslator]: Completed translation [2019-08-14 19:39:49,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 07:39:49 WrapperNode [2019-08-14 19:39:49,405 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-08-14 19:39:49,405 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-14 19:39:49,406 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-14 19:39:49,406 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-14 19:39:49,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 07:39:49" (1/1) ... [2019-08-14 19:39:49,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 07:39:49" (1/1) ... [2019-08-14 19:39:49,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 07:39:49" (1/1) ... [2019-08-14 19:39:49,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 07:39:49" (1/1) ... [2019-08-14 19:39:49,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 07:39:49" (1/1) ... [2019-08-14 19:39:49,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 07:39:49" (1/1) ... [2019-08-14 19:39:49,434 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 07:39:49" (1/1) ... [2019-08-14 19:39:49,436 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-14 19:39:49,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-14 19:39:49,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-14 19:39:49,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-14 19:39:49,438 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.08 07:39:49" (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 [2019-08-14 19:39:49,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-08-14 19:39:49,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-08-14 19:39:49,497 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-14 19:39:49,497 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-08-14 19:39:49,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-08-14 19:39:49,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-08-14 19:39:49,498 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-08-14 19:39:49,499 INFO L130 BoogieDeclarations]: Found specification of procedure SqrtR [2019-08-14 19:39:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-14 19:39:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-08-14 19:39:49,500 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-08-14 19:39:49,718 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-08-14 19:39:49,718 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-14 19:39:49,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.08 07:39:49 BoogieIcfgContainer [2019-08-14 19:39:49,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-14 19:39:49,721 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-14 19:39:49,721 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-14 19:39:49,721 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-14 19:39:49,723 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.08 07:39:49" (1/1) ... [2019-08-14 19:39:50,198 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-14 19:39:50,201 INFO L168 Benchmark]: Toolchain (without parser) took 1169.42 ms. Allocated memory was 130.5 MB in the beginning and 198.2 MB in the end (delta: 67.6 MB). Free memory was 86.4 MB in the beginning and 132.2 MB in the end (delta: -45.9 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2019-08-14 19:39:50,202 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 130.5 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-08-14 19:39:50,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.68 ms. Allocated memory was 130.5 MB in the beginning and 198.2 MB in the end (delta: 67.6 MB). Free memory was 86.1 MB in the beginning and 174.1 MB in the end (delta: -87.9 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2019-08-14 19:39:50,204 INFO L168 Benchmark]: Boogie Preprocessor took 30.96 ms. Allocated memory is still 198.2 MB. Free memory was 174.1 MB in the beginning and 172.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-08-14 19:39:50,205 INFO L168 Benchmark]: RCFGBuilder took 283.70 ms. Allocated memory is still 198.2 MB. Free memory was 172.7 MB in the beginning and 158.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2019-08-14 19:39:50,206 INFO L168 Benchmark]: Symbolic Interpretation took 477.36 ms. Allocated memory is still 198.2 MB. Free memory was 158.4 MB in the beginning and 132.2 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. [2019-08-14 19:39:50,210 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: Over-approximation of reachable states at this location 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 0.23 ms. Allocated memory is still 130.5 MB. Free memory was 104.8 MB in the beginning and 104.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 373.68 ms. Allocated memory was 130.5 MB in the beginning and 198.2 MB in the end (delta: 67.6 MB). Free memory was 86.1 MB in the beginning and 174.1 MB in the end (delta: -87.9 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.96 ms. Allocated memory is still 198.2 MB. Free memory was 174.1 MB in the beginning and 172.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 283.70 ms. Allocated memory is still 198.2 MB. Free memory was 172.7 MB in the beginning and 158.4 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 477.36 ms. Allocated memory is still 198.2 MB. Free memory was 158.4 MB in the beginning and 132.2 MB in the end (delta: 26.2 MB). Peak memory consumption was 26.2 MB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...