java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AbstractInterpretationInline.xml -s ../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/SkatingStrawberry.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-1de736e-m [2019-02-15 12:25:41,915 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-02-15 12:25:41,920 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-02-15 12:25:41,936 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-02-15 12:25:41,937 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-02-15 12:25:41,939 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-02-15 12:25:41,940 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-02-15 12:25:41,942 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-02-15 12:25:41,945 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-02-15 12:25:41,946 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-02-15 12:25:41,956 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-02-15 12:25:41,956 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-02-15 12:25:41,957 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-02-15 12:25:41,958 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-02-15 12:25:41,962 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-02-15 12:25:41,963 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-02-15 12:25:41,963 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-02-15 12:25:41,968 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-02-15 12:25:41,974 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-02-15 12:25:41,976 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-02-15 12:25:41,978 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-02-15 12:25:41,979 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-02-15 12:25:41,983 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-02-15 12:25:41,999 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_array_oct.epf [2019-02-15 12:25:42,012 INFO L110 SettingsManager]: Loading preferences was successful [2019-02-15 12:25:42,013 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-02-15 12:25:42,014 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-02-15 12:25:42,014 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-02-15 12:25:42,014 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-02-15 12:25:42,014 INFO L133 SettingsManager]: * User list type=DISABLED [2019-02-15 12:25:42,015 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-02-15 12:25:42,015 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-02-15 12:25:42,015 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-02-15 12:25:42,015 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-02-15 12:25:42,016 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain [2019-02-15 12:25:42,016 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-02-15 12:25:42,016 INFO L133 SettingsManager]: * Interval Domain=false [2019-02-15 12:25:42,017 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-02-15 12:25:42,017 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-02-15 12:25:42,017 INFO L133 SettingsManager]: * Use SBE=true [2019-02-15 12:25:42,018 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-02-15 12:25:42,018 INFO L133 SettingsManager]: * sizeof long=4 [2019-02-15 12:25:42,018 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-02-15 12:25:42,018 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-02-15 12:25:42,018 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-02-15 12:25:42,019 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-02-15 12:25:42,019 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-02-15 12:25:42,019 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-02-15 12:25:42,019 INFO L133 SettingsManager]: * sizeof long double=12 [2019-02-15 12:25:42,019 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-02-15 12:25:42,020 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-02-15 12:25:42,020 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-02-15 12:25:42,020 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-02-15 12:25:42,020 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-02-15 12:25:42,021 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-02-15 12:25:42,021 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-02-15 12:25:42,021 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-02-15 12:25:42,021 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-02-15 12:25:42,021 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-02-15 12:25:42,022 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-02-15 12:25:42,022 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-02-15 12:25:42,022 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-02-15 12:25:42,022 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-02-15 12:25:42,078 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-02-15 12:25:42,097 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-02-15 12:25:42,105 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-02-15 12:25:42,108 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-02-15 12:25:42,108 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-02-15 12:25:42,109 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/SkatingStrawberry.bpl [2019-02-15 12:25:42,110 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/HierarchicalTraceAbstraction/SkatingStrawberry.bpl' [2019-02-15 12:25:42,153 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-02-15 12:25:42,154 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-02-15 12:25:42,155 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-02-15 12:25:42,155 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-02-15 12:25:42,155 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-02-15 12:25:42,170 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 12:25:42" (1/1) ... [2019-02-15 12:25:42,181 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 12:25:42" (1/1) ... [2019-02-15 12:25:42,187 WARN L165 Inliner]: Program contained no entry procedure! [2019-02-15 12:25:42,187 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start] [2019-02-15 12:25:42,187 WARN L175 Inliner]: Fallback enabled. All procedures will be processed. [2019-02-15 12:25:42,189 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-02-15 12:25:42,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-02-15 12:25:42,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-02-15 12:25:42,191 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-02-15 12:25:42,202 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 12:25:42" (1/1) ... [2019-02-15 12:25:42,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 12:25:42" (1/1) ... [2019-02-15 12:25:42,203 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 12:25:42" (1/1) ... [2019-02-15 12:25:42,204 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 12:25:42" (1/1) ... [2019-02-15 12:25:42,207 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 12:25:42" (1/1) ... [2019-02-15 12:25:42,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 12:25:42" (1/1) ... [2019-02-15 12:25:42,213 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 12:25:42" (1/1) ... [2019-02-15 12:25:42,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-02-15 12:25:42,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-02-15 12:25:42,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-02-15 12:25:42,215 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-02-15 12:25:42,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.02 12:25:42" (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 [2019-02-15 12:25:42,277 INFO L124 BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration [2019-02-15 12:25:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-02-15 12:25:42,277 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-02-15 12:25:42,566 INFO L278 CfgBuilder]: Using library mode [2019-02-15 12:25:42,567 INFO L286 CfgBuilder]: Removed 1 assue(true) statements. [2019-02-15 12:25:42,569 INFO L202 PluginConnector]: Adding new model SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:25:42 BoogieIcfgContainer [2019-02-15 12:25:42,569 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-02-15 12:25:42,570 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-02-15 12:25:42,570 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-02-15 12:25:42,571 INFO L276 PluginConnector]: Abstract Interpretation initialized [2019-02-15 12:25:42,572 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "SkatingStrawberry.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 12:25:42" (1/1) ... [2019-02-15 12:25:42,638 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2) [2019-02-15 12:25:43,699 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-02-15 12:25:43,720 INFO L272 AbstractInterpreter]: Visited 7 different actions 17 times. Merged at 5 different actions 7 times. Never widened. Found 4 fixpoints after 3 different actions. Largest state had 0 variables. [2019-02-15 12:25:43,722 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-02-15 12:25:43,723 INFO L168 Benchmark]: Toolchain (without parser) took 1569.56 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 109.3 MB in the beginning and 173.0 MB in the end (delta: -63.7 MB). Peak memory consumption was 87.9 MB. Max. memory is 7.1 GB. [2019-02-15 12:25:43,726 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory is still 110.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-02-15 12:25:43,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.98 ms. Allocated memory is still 141.0 MB. Free memory was 108.9 MB in the beginning and 107.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-02-15 12:25:43,728 INFO L168 Benchmark]: Boogie Preprocessor took 23.89 ms. Allocated memory is still 141.0 MB. Free memory was 107.2 MB in the beginning and 106.3 MB in the end (delta: 875.7 kB). Peak memory consumption was 875.7 kB. Max. memory is 7.1 GB. [2019-02-15 12:25:43,730 INFO L168 Benchmark]: RCFGBuilder took 354.49 ms. Allocated memory is still 141.0 MB. Free memory was 105.9 MB in the beginning and 97.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. [2019-02-15 12:25:43,731 INFO L168 Benchmark]: Abstract Interpretation took 1152.68 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 97.1 MB in the beginning and 173.0 MB in the end (delta: -75.9 MB). Peak memory consumption was 75.7 MB. Max. memory is 7.1 GB. [2019-02-15 12:25:43,737 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory is still 110.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 34.98 ms. Allocated memory is still 141.0 MB. Free memory was 108.9 MB in the beginning and 107.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 23.89 ms. Allocated memory is still 141.0 MB. Free memory was 107.2 MB in the beginning and 106.3 MB in the end (delta: 875.7 kB). Peak memory consumption was 875.7 kB. Max. memory is 7.1 GB. * RCFGBuilder took 354.49 ms. Allocated memory is still 141.0 MB. Free memory was 105.9 MB in the beginning and 97.1 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.8 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 1152.68 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 97.1 MB in the beginning and 173.0 MB in the end (delta: -75.9 MB). Peak memory consumption was 75.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 28]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L14] y := x + 1; [L15] a[x] := 1000; [L16] a[y] := 0; [L19] xold := x; [L20] yold := y; [L21] x := (x + 1) % 256; [L22] y := (y + 1) % 256; [L23] a[x] := a[xold]; [L24] a[y] := a[yold]; [L27] COND TRUE a[x] == 0 [L28] assert a[y] == 1000; RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...