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/2018ProgVerif-Sheet04Ex04.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-b03553c [2019-08-05 18:12:14,930 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-08-05 18:12:14,932 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-08-05 18:12:14,948 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-08-05 18:12:14,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-08-05 18:12:14,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-08-05 18:12:14,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-08-05 18:12:14,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-08-05 18:12:14,954 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-08-05 18:12:14,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-08-05 18:12:14,956 INFO L181 SettingsManager]: Resetting Symbolic Interpretation preferences to default values [2019-08-05 18:12:14,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-08-05 18:12:14,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-08-05 18:12:14,959 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-08-05 18:12:14,960 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-08-05 18:12:14,961 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-08-05 18:12:14,962 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-08-05 18:12:14,963 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-08-05 18:12:14,965 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-08-05 18:12:14,967 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-08-05 18:12:14,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-08-05 18:12:14,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-08-05 18:12:14,971 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-08-05 18:12:14,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-08-05 18:12:14,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-08-05 18:12:14,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-08-05 18:12:14,978 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-08-05 18:12:14,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-08-05 18:12:14,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-08-05 18:12:14,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-08-05 18:12:14,981 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-08-05 18:12:14,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-08-05 18:12:14,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-08-05 18:12:14,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-08-05 18:12:14,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-08-05 18:12:14,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-08-05 18:12:15,012 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-08-05 18:12:15,027 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-08-05 18:12:15,031 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-08-05 18:12:15,033 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-08-05 18:12:15,033 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2019-08-05 18:12:15,035 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/InvariantChecking/2018ProgVerif-Sheet04Ex04.bpl [2019-08-05 18:12:15,035 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/InvariantChecking/2018ProgVerif-Sheet04Ex04.bpl' [2019-08-05 18:12:15,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-08-05 18:12:15,076 INFO L131 ToolchainWalker]: Walking toolchain with 3 elements. [2019-08-05 18:12:15,077 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-08-05 18:12:15,077 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-08-05 18:12:15,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-08-05 18:12:15,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "2018ProgVerif-Sheet04Ex04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:15" (1/1) ... [2019-08-05 18:12:15,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "2018ProgVerif-Sheet04Ex04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:15" (1/1) ... [2019-08-05 18:12:15,115 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "2018ProgVerif-Sheet04Ex04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:15" (1/1) ... [2019-08-05 18:12:15,115 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "2018ProgVerif-Sheet04Ex04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:15" (1/1) ... [2019-08-05 18:12:15,119 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "2018ProgVerif-Sheet04Ex04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:15" (1/1) ... [2019-08-05 18:12:15,125 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "2018ProgVerif-Sheet04Ex04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:15" (1/1) ... [2019-08-05 18:12:15,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "2018ProgVerif-Sheet04Ex04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:15" (1/1) ... [2019-08-05 18:12:15,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-08-05 18:12:15,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-08-05 18:12:15,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-08-05 18:12:15,132 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-08-05 18:12:15,133 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "2018ProgVerif-Sheet04Ex04.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 05.08 06:12:15" (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 18:12:15,212 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-08-05 18:12:15,212 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-08-05 18:12:15,213 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-08-05 18:12:15,461 INFO L275 CfgBuilder]: Using library mode [2019-08-05 18:12:15,461 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-08-05 18:12:15,462 INFO L202 PluginConnector]: Adding new model 2018ProgVerif-Sheet04Ex04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 06:12:15 BoogieIcfgContainer [2019-08-05 18:12:15,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-08-05 18:12:15,463 INFO L113 PluginConnector]: ------------------------Symbolic Interpretation---------------------------- [2019-08-05 18:12:15,463 INFO L271 PluginConnector]: Initializing Symbolic Interpretation... [2019-08-05 18:12:15,463 INFO L275 PluginConnector]: Symbolic Interpretation initialized [2019-08-05 18:12:15,464 INFO L185 PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "2018ProgVerif-Sheet04Ex04.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.08 06:12:15" (1/1) ... [2019-08-05 18:12:15,475 INFO L148 IcfgInterpreter]: Started Sifa with 2 locations of interest [2019-08-05 18:12:15,478 INFO L155 IcfgInterpreter]: Building call graph [2019-08-05 18:12:15,485 INFO L160 IcfgInterpreter]: Initial procedures are [main] [2019-08-05 18:12:15,493 INFO L165 IcfgInterpreter]: Starting interpretation [2019-08-05 18:12:15,494 INFO L185 IcfgInterpreter]: Interpreting procedure main with input of size 1 [2019-08-05 18:12:15,583 INFO L169 IcfgInterpreter]: Interpretation finished [2019-08-05 18:12:15,583 INFO L177 IcfgInterpreter]: Final predicates for locations of interest are: [2019-08-05 18:12:15,588 INFO L179 IcfgInterpreter]: Location mainErr0ASSERT_VIOLATIONINVARIANTandASSERT has predicate 33#(and (= main_j main_i) (or (and (not (= (+ main_x 2) 0)) (or (not (= main_j main_i)) (= (+ main_y 1) (+ main_x 1))) (not (= (+ main_x 1) 0))) (and (= main_j main_y) (= main_i main_x))) (not (= main_y main_x))) [2019-08-05 18:12:15,589 INFO L179 IcfgInterpreter]: Location mainErr1ASSERT_VIOLATIONASSERT has predicate 27#(and (= main_j main_i) (= main_x 0) (not (= main_y 0)) (or (= main_y main_x) (not (= main_j main_i))) (not (= (+ main_x 1) 0))) [2019-08-05 18:12:15,590 WARN L88 terpretationObserver]: Some locations of interest might be reachable, see reported results. [2019-08-05 18:12:15,598 INFO L132 PluginConnector]: ------------------------ END Symbolic Interpretation---------------------------- [2019-08-05 18:12:15,601 INFO L168 Benchmark]: Toolchain (without parser) took 524.66 ms. Allocated memory is still 140.5 MB. Free memory was 107.7 MB in the beginning and 90.2 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 7.1 GB. [2019-08-05 18:12:15,602 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory is still 108.5 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-08-05 18:12:15,603 INFO L168 Benchmark]: Boogie Preprocessor took 51.37 ms. Allocated memory is still 140.5 MB. Free memory was 107.7 MB in the beginning and 105.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2019-08-05 18:12:15,604 INFO L168 Benchmark]: RCFGBuilder took 333.68 ms. Allocated memory is still 140.5 MB. Free memory was 105.5 MB in the beginning and 95.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-08-05 18:12:15,606 INFO L168 Benchmark]: Symbolic Interpretation took 135.07 ms. Allocated memory is still 140.5 MB. Free memory was 95.7 MB in the beginning and 90.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. [2019-08-05 18:12:15,610 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.plugins.symbolicinterpretation: - UnprovableResult [Line: 18]: Unable to prove that loop invariant is valid and assertion always holds Unable to prove that loop invariant is valid and assertion always holds Reason: Interpreter reached this location of interest. Location might be reachable.. Possible FailurePath: - UnprovableResult [Line: 24]: Unable to prove that assertion always holds Unable to prove that assertion 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 0.28 ms. Allocated memory is still 140.5 MB. Free memory is still 108.5 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.37 ms. Allocated memory is still 140.5 MB. Free memory was 107.7 MB in the beginning and 105.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 333.68 ms. Allocated memory is still 140.5 MB. Free memory was 105.5 MB in the beginning and 95.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Symbolic Interpretation took 135.07 ms. Allocated memory is still 140.5 MB. Free memory was 95.7 MB in the beginning and 90.2 MB in the end (delta: 5.5 MB). Peak memory consumption was 5.5 MB. Max. memory is 7.1 GB. RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...