java -ea -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_oct.epf -i ../../../trunk/examples/programs/20170304-DifficultPathPrograms/invert_string.i_4.bpl -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fa1c628-m [2019-01-31 15:27:08,601 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-31 15:27:08,603 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-31 15:27:08,615 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-31 15:27:08,616 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-31 15:27:08,617 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-31 15:27:08,618 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-31 15:27:08,621 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-31 15:27:08,622 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-31 15:27:08,623 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-31 15:27:08,624 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-01-31 15:27:08,641 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-31 15:27:08,641 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-31 15:27:08,647 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-31 15:27:08,651 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-31 15:27:08,652 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-31 15:27:08,654 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-31 15:27:08,657 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-31 15:27:08,657 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-31 15:27:08,659 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2019-01-31 15:27:08,663 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/array-bench/reach_32bit_oct.epf [2019-01-31 15:27:08,685 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-31 15:27:08,685 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-31 15:27:08,687 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2019-01-31 15:27:08,687 INFO L133 SettingsManager]: * Show backtranslation warnings=false [2019-01-31 15:27:08,687 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-01-31 15:27:08,687 INFO L133 SettingsManager]: * User list type=DISABLED [2019-01-31 15:27:08,687 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true [2019-01-31 15:27:08,688 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-01-31 15:27:08,688 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-01-31 15:27:08,688 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain [2019-01-31 15:27:08,688 INFO L133 SettingsManager]: * Abstract domain=OctagonDomain [2019-01-31 15:27:08,689 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-01-31 15:27:08,689 INFO L133 SettingsManager]: * Interval Domain=false [2019-01-31 15:27:08,690 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-31 15:27:08,690 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-31 15:27:08,690 INFO L133 SettingsManager]: * Use SBE=true [2019-01-31 15:27:08,691 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-31 15:27:08,692 INFO L133 SettingsManager]: * sizeof long=4 [2019-01-31 15:27:08,692 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-31 15:27:08,693 INFO L133 SettingsManager]: * sizeof POINTER=4 [2019-01-31 15:27:08,693 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-31 15:27:08,693 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-01-31 15:27:08,693 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-01-31 15:27:08,693 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-01-31 15:27:08,694 INFO L133 SettingsManager]: * sizeof long double=12 [2019-01-31 15:27:08,694 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-31 15:27:08,694 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-01-31 15:27:08,695 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-31 15:27:08,695 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-31 15:27:08,695 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2019-01-31 15:27:08,695 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-01-31 15:27:08,695 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-31 15:27:08,696 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-01-31 15:27:08,696 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-01-31 15:27:08,696 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-01-31 15:27:08,696 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-01-31 15:27:08,696 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in [2019-01-31 15:27:08,697 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-01-31 15:27:08,697 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-01-31 15:27:08,732 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-31 15:27:08,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-31 15:27:08,750 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-31 15:27:08,752 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2019-01-31 15:27:08,753 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized [2019-01-31 15:27:08,753 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/invert_string.i_4.bpl [2019-01-31 15:27:08,754 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/invert_string.i_4.bpl' [2019-01-31 15:27:08,820 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-31 15:27:08,823 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-01-31 15:27:08,823 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-31 15:27:08,824 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-31 15:27:08,824 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-31 15:27:08,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:27:08" (1/1) ... [2019-01-31 15:27:08,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:27:08" (1/1) ... [2019-01-31 15:27:08,864 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-31 15:27:08,865 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-31 15:27:08,865 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-31 15:27:08,866 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-31 15:27:08,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:27:08" (1/1) ... [2019-01-31 15:27:08,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:27:08" (1/1) ... [2019-01-31 15:27:08,880 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:27:08" (1/1) ... [2019-01-31 15:27:08,881 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:27:08" (1/1) ... [2019-01-31 15:27:08,885 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:27:08" (1/1) ... [2019-01-31 15:27:08,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:27:08" (1/1) ... [2019-01-31 15:27:08,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:27:08" (1/1) ... [2019-01-31 15:27:08,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-31 15:27:08,891 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-31 15:27:08,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-31 15:27:08,892 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-31 15:27:08,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 31.01 03:27:08" (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:8092 -smt2 -in -t:10000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:8092 -smt2 -in -t:10000 [2019-01-31 15:27:08,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-31 15:27:08,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-31 15:27:09,369 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-31 15:27:09,369 INFO L286 CfgBuilder]: Removed 3 assue(true) statements. [2019-01-31 15:27:09,370 INFO L202 PluginConnector]: Adding new model invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:27:09 BoogieIcfgContainer [2019-01-31 15:27:09,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-31 15:27:09,372 INFO L113 PluginConnector]: ------------------------Abstract Interpretation---------------------------- [2019-01-31 15:27:09,372 INFO L271 PluginConnector]: Initializing Abstract Interpretation... [2019-01-31 15:27:09,372 INFO L276 PluginConnector]: Abstract Interpretation initialized [2019-01-31 15:27:09,373 INFO L185 PluginConnector]: Executing the observer AbstractInterpretationRcfgObserver from plugin Abstract Interpretation for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 03:27:09" (1/1) ... [2019-01-31 15:27:09,422 INFO L101 FixpointEngine]: Starting fixpoint engine with domain OctagonDomain (maxUnwinding=3, maxParallelStates=2) [2019-01-31 15:27:09,476 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2019-01-31 15:27:11,960 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-01-31 15:27:11,979 INFO L272 AbstractInterpreter]: Visited 7 different actions 121 times. Merged at 5 different actions 70 times. Widened at 4 different actions 45 times. Found 30 fixpoints after 3 different actions. Largest state had 0 variables. [2019-01-31 15:27:11,981 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation---------------------------- [2019-01-31 15:27:11,983 INFO L168 Benchmark]: Toolchain (without parser) took 3161.66 ms. Allocated memory was 133.7 MB in the beginning and 196.6 MB in the end (delta: 62.9 MB). Free memory was 108.7 MB in the beginning and 121.0 MB in the end (delta: -12.3 MB). Peak memory consumption was 50.6 MB. Max. memory is 7.1 GB. [2019-01-31 15:27:11,985 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 133.7 MB. Free memory is still 110.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-01-31 15:27:11,986 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.55 ms. Allocated memory is still 133.7 MB. Free memory was 108.5 MB in the beginning and 106.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2019-01-31 15:27:11,987 INFO L168 Benchmark]: Boogie Preprocessor took 25.90 ms. Allocated memory is still 133.7 MB. Free memory was 106.9 MB in the beginning and 105.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2019-01-31 15:27:11,988 INFO L168 Benchmark]: RCFGBuilder took 479.47 ms. Allocated memory is still 133.7 MB. Free memory was 105.6 MB in the beginning and 93.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2019-01-31 15:27:11,990 INFO L168 Benchmark]: Abstract Interpretation took 2609.61 ms. Allocated memory was 133.7 MB in the beginning and 196.6 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 121.0 MB in the end (delta: -28.0 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. [2019-01-31 15:27:11,997 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - GenericResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 133.7 MB. Free memory is still 110.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 41.55 ms. Allocated memory is still 133.7 MB. Free memory was 108.5 MB in the beginning and 106.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 25.90 ms. Allocated memory is still 133.7 MB. Free memory was 106.9 MB in the beginning and 105.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 479.47 ms. Allocated memory is still 133.7 MB. Free memory was 105.6 MB in the beginning and 93.2 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * Abstract Interpretation took 2609.61 ms. Allocated memory was 133.7 MB in the beginning and 196.6 MB in the end (delta: 62.9 MB). Free memory was 93.0 MB in the beginning and 121.0 MB in the end (delta: -28.0 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: - UnprovableResult [Line: 80]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: abstract domain could reach this error location. Possible FailurePath: [L20] havoc main_#res; [L21] havoc main_#t~nondet0, main_#t~nondet2, main_#t~post1, main_#t~post4, main_#t~post3, main_#t~post6, main_#t~post5, main_~MAX~6, main_~str1~6, main_~str2~6, main_~cont~6, main_~i~6, main_~j~6; [L22] main_~MAX~6 := (if main_#t~nondet0 % 4294967296 % 4294967296 <= 2147483647 then main_#t~nondet0 % 4294967296 % 4294967296 else main_#t~nondet0 % 4294967296 % 4294967296 - 4294967296); [L23] havoc main_#t~nondet0; [L24] havoc main_~str1~6; [L25] havoc main_~str2~6; [L26] havoc main_~cont~6; [L27] havoc main_~i~6; [L28] havoc main_~j~6; [L29] main_~cont~6 := 0; [L30] main_~i~6 := 0; [L44] assume !!(main_~i~6 < main_~MAX~6); [L45] assume -128 <= main_#t~nondet2 && main_#t~nondet2 <= 127; [L46] main_~str1~6 := main_~str1~6[main_~i~6 := main_#t~nondet2]; [L47] havoc main_#t~nondet2; [L48] main_#t~post1 := main_~i~6; [L49] main_~i~6 := main_#t~post1 + 1; [L50] havoc main_#t~post1; [L38] assume !(main_~i~6 < main_~MAX~6); [L39] main_~str1~6 := main_~str1~6[main_~MAX~6 - 1 := 0]; [L40] main_~j~6 := 0; [L41] main_~i~6 := main_~MAX~6 - 1; [L70] assume !!(main_~i~6 >= 0); [L71] main_~str2~6 := main_~str2~6[main_~j~6 := main_~str1~6[0]]; [L72] main_#t~post4 := main_~j~6; [L73] main_~j~6 := main_#t~post4 + 1; [L74] havoc main_#t~post4; [L75] main_#t~post3 := main_~i~6; [L76] main_~i~6 := main_#t~post3 - 1; [L77] havoc main_#t~post3; [L58] assume !(main_~i~6 >= 0); [L59] main_~j~6 := main_~MAX~6 - 1; [L60] main_~i~6 := 0; [L62] assume !!(main_~i~6 < main_~MAX~6); [L63] __VERIFIER_assert_#in~cond := (if main_~str1~6[main_~i~6] == main_~str2~6[main_~j~6] then 1 else 0); [L64] havoc __VERIFIER_assert_~cond; [L65] __VERIFIER_assert_~cond := __VERIFIER_assert_#in~cond; [L66] assume __VERIFIER_assert_~cond == 0; [L67] assume !false; [L80] assert false; RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...