java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/Sifa.xml -i ../../../trunk/examples/programs/toy/InvariantChecking/showcase/2019ProgVerif-Sheet12Ex03-Square.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b03553c [2019-08-05 18:12:12,343 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 18:12:12,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 18:12:12,360 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 18:12:12,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 18:12:12,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 18:12:12,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 18:12:12,366 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 18:12:12,368 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 18:12:12,369 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 18:12:12,371 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 18:12:12,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 18:12:12,372 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 18:12:12,373 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 18:12:12,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 18:12:12,383 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 18:12:12,383 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 18:12:12,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 18:12:12,389 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 18:12:12,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 18:12:12,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 18:12:12,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 18:12:12,397 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 18:12:12,398 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 18:12:12,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-08-05 18:12:12,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-08-05 18:12:12,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-08-05 18:12:12,405 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-08-05 18:12:12,405 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-08-05 18:12:12,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-08-05 18:12:12,408 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 18:12:12,408 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 18:12:12,409 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 18:12:12,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 18:12:12,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 18:12:12,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 18:12:12,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 18:12:12,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 18:12:12,413 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 18:12:12,414 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 18:12:12,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 18:12:12,451 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 18:12:12,467 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 18:12:12,472 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 18:12:12,474 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 18:12:12,475 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 18:12:12,476 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/InvariantChecking/showcase/2019ProgVerif-Sheet12Ex03-Square.bpl [2019-08-05 18:12:12,477 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/InvariantChecking/showcase/2019ProgVerif-Sheet12Ex03-Square.bpl' [2019-08-05 18:12:12,508 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 18:12:12,509 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2019-08-05 18:12:12,510 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 18:12:12,510 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 18:12:12,510 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 18:12:12,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "2019ProgVerif-Sheet12Ex03-Square.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:12" (1/1) ... [2019-08-05 18:12:12,538 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "2019ProgVerif-Sheet12Ex03-Square.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:12" (1/1) ... [2019-08-05 18:12:12,545 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "2019ProgVerif-Sheet12Ex03-Square.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:12" (1/1) ... [2019-08-05 18:12:12,545 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "2019ProgVerif-Sheet12Ex03-Square.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:12" (1/1) ... [2019-08-05 18:12:12,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "2019ProgVerif-Sheet12Ex03-Square.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:12" (1/1) ... [2019-08-05 18:12:12,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "2019ProgVerif-Sheet12Ex03-Square.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:12" (1/1) ... [2019-08-05 18:12:12,555 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "2019ProgVerif-Sheet12Ex03-Square.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:12" (1/1) ... [2019-08-05 18:12:12,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 18:12:12,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 18:12:12,557 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 18:12:12,557 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 18:12:12,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "2019ProgVerif-Sheet12Ex03-Square.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:12" (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:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-08-05 18:12:12,624 INFO L124 BoogieDeclarations]: Specification and implementation of procedure square given in one single declaration [2019-08-05 18:12:12,624 INFO L130 BoogieDeclarations]: Found specification of procedure square [2019-08-05 18:12:12,624 INFO L138 BoogieDeclarations]: Found implementation of procedure square [2019-08-05 18:12:12,693 WARN L731 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2019-08-05 18:12:12,862 INFO L275 CfgBuilder]: Using library mode [2019-08-05 18:12:12,863 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-08-05 18:12:12,864 INFO L202 PluginConnector]: Adding new model 2019ProgVerif-Sheet12Ex03-Square.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 06:12:12 BoogieIcfgContainer [2019-08-05 18:12:12,864 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 18:12:12,865 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-05 18:12:12,865 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-05 18:12:12,865 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-05 18:12:12,866 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "2019ProgVerif-Sheet12Ex03-Square.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 06:12:12" (1/1) ... [2019-08-05 18:12:12,877 INFO L148 IcfgInterpreter]: Started Sifa with 1 locations of interest [2019-08-05 18:12:12,880 INFO L155 IcfgInterpreter]: Building call graph [2019-08-05 18:12:12,887 INFO L160 IcfgInterpreter]: Initial procedures are [square] [2019-08-05 18:12:12,894 INFO L165 IcfgInterpreter]: Starting interpretation [2019-08-05 18:12:12,896 INFO L185 IcfgInterpreter]: Interpreting procedure square with input of size 1 [2019-08-05 18:12:12,986 INFO L169 IcfgInterpreter]: Interpretation finished [2019-08-05 18:12:12,986 INFO L177 IcfgInterpreter]: Final predicates for locations of interest are: [2019-08-05 18:12:12,988 INFO L179 IcfgInterpreter]: Location squareErr0ENSURES_VIOLATIONPOST_CONDITION has predicate 23#(and (not (<= (* 2 square_n) square_res)) (< square_i (+ square_n 1)) (not (< square_i square_n))) [2019-08-05 18:12:12,989 WARN L88 terpretationObserver]: Some locations of interest might be reachable, see reported results. [2019-08-05 18:12:12,996 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-05 18:12:12,999 INFO L168 Benchmark]: Toolchain (without parser) took 488.71 ms. Allocated memory is still 133.7 MB. Free memory was 110.1 MB in the beginning and 93.4 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.7 MB. Max. memory is 7.1 GB. [2019-08-05 18:12:13,000 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 133.7 MB. Free memory was 111.4 MB in the beginning and 111.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2019-08-05 18:12:13,001 INFO L168 Benchmark]: Boogie Preprocessor took 46.88 ms. Allocated memory is still 133.7 MB. Free memory was 110.1 MB in the beginning and 107.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-08-05 18:12:13,002 INFO L168 Benchmark]: RCFGBuilder took 307.55 ms. Allocated memory is still 133.7 MB. Free memory was 107.9 MB in the beginning and 98.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2019-08-05 18:12:13,003 INFO L168 Benchmark]: Symbolic Interpretation took 131.28 ms. Allocated memory is still 133.7 MB. Free memory was 98.4 MB in the beginning and 93.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2019-08-05 18:12:13,007 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.symbolicinterpretation: - UnprovableResult [Line: 11]: Unable to prove that procedure postcondition always holds Unable to prove that procedure postcondition always holds Reason: Interpreter reached this location of interest. Location might be reachable.. Possible FailurePath: * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 133.7 MB. Free memory was 111.4 MB in the beginning and 111.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * Boogie Preprocessor took 46.88 ms. Allocated memory is still 133.7 MB. Free memory was 110.1 MB in the beginning and 107.9 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 307.55 ms. Allocated memory is still 133.7 MB. Free memory was 107.9 MB in the beginning and 98.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 131.28 ms. Allocated memory is still 133.7 MB. Free memory was 98.4 MB in the beginning and 93.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...