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/20170304-DifficultPathPrograms/invert_string.i_4.bpl
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This is Ultimate 0.1.24-0302a3f
[2019-02-25 16:54:04,392 INFO L170 SettingsManager]: Resetting all preferences to default values...
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[2019-02-25 16:54:04,411 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
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[2019-02-25 16:54:04,414 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2019-02-25 16:54:04,445 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values
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[2019-02-25 16:54:04,452 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2019-02-25 16:54:04,453 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values
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[2019-02-25 16:54:04,463 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
[2019-02-25 16:54:04,492 INFO L110 SettingsManager]: Loading preferences was successful
[2019-02-25 16:54:04,493 INFO L112 SettingsManager]: Preferences different from defaults after loading the file:
[2019-02-25 16:54:04,494 INFO L131 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults:
[2019-02-25 16:54:04,494 INFO L133 SettingsManager]: * Show backtranslation warnings=false
[2019-02-25 16:54:04,494 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2019-02-25 16:54:04,494 INFO L133 SettingsManager]: * User list type=DISABLED
[2019-02-25 16:54:04,494 INFO L133 SettingsManager]: * Inline calls to unimplemented procedures=true
[2019-02-25 16:54:04,494 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2019-02-25 16:54:04,495 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2019-02-25 16:54:04,495 INFO L133 SettingsManager]: * Underlying domain=OctagonDomain
[2019-02-25 16:54:04,495 INFO L133 SettingsManager]: * Abstract domain=ArrayDomain
[2019-02-25 16:54:04,495 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true
[2019-02-25 16:54:04,495 INFO L133 SettingsManager]: * Interval Domain=false
[2019-02-25 16:54:04,497 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-02-25 16:54:04,497 INFO L133 SettingsManager]: * Create parallel compositions if possible=false
[2019-02-25 16:54:04,497 INFO L133 SettingsManager]: * Use SBE=true
[2019-02-25 16:54:04,497 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-02-25 16:54:04,497 INFO L133 SettingsManager]: * sizeof long=4
[2019-02-25 16:54:04,498 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true
[2019-02-25 16:54:04,498 INFO L133 SettingsManager]: * sizeof POINTER=4
[2019-02-25 16:54:04,498 INFO L133 SettingsManager]: * Check division by zero=IGNORE
[2019-02-25 16:54:04,498 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2019-02-25 16:54:04,498 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-02-25 16:54:04,498 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2019-02-25 16:54:04,499 INFO L133 SettingsManager]: * sizeof long double=12
[2019-02-25 16:54:04,500 INFO L133 SettingsManager]: * Check if freed pointer was valid=false
[2019-02-25 16:54:04,500 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2019-02-25 16:54:04,501 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2019-02-25 16:54:04,501 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements
[2019-02-25 16:54:04,501 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode
[2019-02-25 16:54:04,501 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-02-25 16:54:04,501 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2019-02-25 16:54:04,502 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2019-02-25 16:54:04,502 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-02-25 16:54:04,502 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN
[2019-02-25 16:54:04,503 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2019-02-25 16:54:04,503 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-02-25 16:54:04,503 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2019-02-25 16:54:04,503 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES
[2019-02-25 16:54:04,552 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2019-02-25 16:54:04,572 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-02-25 16:54:04,578 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-02-25 16:54:04,580 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2019-02-25 16:54:04,580 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized
[2019-02-25 16:54:04,581 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/invert_string.i_4.bpl
[2019-02-25 16:54:04,581 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/invert_string.i_4.bpl'
[2019-02-25 16:54:04,627 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-02-25 16:54:04,628 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2019-02-25 16:54:04,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2019-02-25 16:54:04,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2019-02-25 16:54:04,629 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized
[2019-02-25 16:54:04,644 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 25.02 04:54:04" (1/1) ...
[2019-02-25 16:54:04,655 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 25.02 04:54:04" (1/1) ...
[2019-02-25 16:54:04,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-02-25 16:54:04,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-02-25 16:54:04,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2019-02-25 16:54:04,664 INFO L276 PluginConnector]: Boogie Preprocessor initialized
[2019-02-25 16:54:04,674 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 25.02 04:54:04" (1/1) ...
[2019-02-25 16:54:04,674 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 25.02 04:54:04" (1/1) ...
[2019-02-25 16:54:04,676 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 25.02 04:54:04" (1/1) ...
[2019-02-25 16:54:04,676 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 25.02 04:54:04" (1/1) ...
[2019-02-25 16:54:04,679 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 25.02 04:54:04" (1/1) ...
[2019-02-25 16:54:04,681 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 25.02 04:54:04" (1/1) ...
[2019-02-25 16:54:04,682 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 25.02 04:54:04" (1/1) ...
[2019-02-25 16:54:04,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-02-25 16:54:04,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-02-25 16:54:04,685 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2019-02-25 16:54:04,685 INFO L276 PluginConnector]: RCFGBuilder initialized
[2019-02-25 16:54:04,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 25.02 04:54:04" (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
[2019-02-25 16:54:04,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-02-25 16:54:04,752 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-02-25 16:54:05,049 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-02-25 16:54:05,049 INFO L286 CfgBuilder]: Removed 3 assue(true) statements.
[2019-02-25 16:54:05,052 INFO L202 PluginConnector]: Adding new model invert_string.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.02 04:54:05 BoogieIcfgContainer
[2019-02-25 16:54:05,053 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-02-25 16:54:05,053 INFO L113 PluginConnector]: ------------------------Abstract Interpretation----------------------------
[2019-02-25 16:54:05,053 INFO L271 PluginConnector]: Initializing Abstract Interpretation...
[2019-02-25 16:54:05,054 INFO L276 PluginConnector]: Abstract Interpretation initialized
[2019-02-25 16:54:05,055 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 25.02 04:54:05" (1/1) ...
[2019-02-25 16:54:05,116 INFO L101 FixpointEngine]: Starting fixpoint engine with domain ArrayDomain (maxUnwinding=3, maxParallelStates=2)
[2019-02-25 16:54:05,209 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.
[2019-02-25 16:54:20,277 INFO L263 AbstractInterpreter]: Some error location(s) were reachable
[2019-02-25 16:54:20,297 INFO L272 AbstractInterpreter]: Visited 7 different actions 141 times. Merged at 5 different actions 82 times. Widened at 4 different actions 56 times. Found 36 fixpoints after 3 different actions. Largest state had 0 variables.
[2019-02-25 16:54:20,300 INFO L132 PluginConnector]: ------------------------ END Abstract Interpretation----------------------------
[2019-02-25 16:54:20,301 INFO L168 Benchmark]: Toolchain (without parser) took 15673.33 ms. Allocated memory was 140.5 MB in the beginning and 1.0 GB in the end (delta: 867.2 MB). Free memory was 108.0 MB in the beginning and 480.2 MB in the end (delta: -372.2 MB). Peak memory consumption was 495.0 MB. Max. memory is 7.1 GB.
[2019-02-25 16:54:20,303 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 ms. Allocated memory is still 140.5 MB. Free memory is still 108.9 MB. There was no memory consumed. Max. memory is 7.1 GB.
[2019-02-25 16:54:20,304 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.26 ms. Allocated memory is still 140.5 MB. Free memory was 107.6 MB in the beginning and 105.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB.
[2019-02-25 16:54:20,305 INFO L168 Benchmark]: Boogie Preprocessor took 20.95 ms. Allocated memory is still 140.5 MB. Free memory was 105.9 MB in the beginning and 105.1 MB in the end (delta: 856.0 kB). Peak memory consumption was 856.0 kB. Max. memory is 7.1 GB.
[2019-02-25 16:54:20,306 INFO L168 Benchmark]: RCFGBuilder took 368.23 ms. Allocated memory is still 140.5 MB. Free memory was 105.1 MB in the beginning and 95.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB.
[2019-02-25 16:54:20,307 INFO L168 Benchmark]: Abstract Interpretation took 15246.76 ms. Allocated memory was 140.5 MB in the beginning and 1.0 GB in the end (delta: 867.2 MB). Free memory was 94.6 MB in the beginning and 480.2 MB in the end (delta: -385.6 MB). Peak memory consumption was 481.5 MB. Max. memory is 7.1 GB.
[2019-02-25 16:54:20,313 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 0.18 ms. Allocated memory is still 140.5 MB. Free memory is still 108.9 MB. There was no memory consumed. Max. memory is 7.1 GB.
* Boogie Procedure Inliner took 34.26 ms. Allocated memory is still 140.5 MB. Free memory was 107.6 MB in the beginning and 105.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 20.95 ms. Allocated memory is still 140.5 MB. Free memory was 105.9 MB in the beginning and 105.1 MB in the end (delta: 856.0 kB). Peak memory consumption was 856.0 kB. Max. memory is 7.1 GB.
* RCFGBuilder took 368.23 ms. Allocated memory is still 140.5 MB. Free memory was 105.1 MB in the beginning and 95.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB.
* Abstract Interpretation took 15246.76 ms. Allocated memory was 140.5 MB in the beginning and 1.0 GB in the end (delta: 867.2 MB). Free memory was 94.6 MB in the beginning and 480.2 MB in the end (delta: -385.6 MB). Peak memory consumption was 481.5 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...