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/abstractInterpretation/regression/all/stmt-multiassign-safe.bpl


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This is Ultimate 0.1.24-e6f8464
[2019-08-06 14:26:07,068 INFO  L177        SettingsManager]: Resetting all preferences to default values...
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[2019-08-06 14:26:07,197 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2019-08-06 14:26:07,216 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-08-06 14:26:07,221 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2019-08-06 14:26:07,224 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2019-08-06 14:26:07,225 INFO  L275        PluginConnector]: Boogie PL CUP Parser initialized
[2019-08-06 14:26:07,226 INFO  L428   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/abstractInterpretation/regression/all/stmt-multiassign-safe.bpl
[2019-08-06 14:26:07,226 INFO  L110           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/abstractInterpretation/regression/all/stmt-multiassign-safe.bpl'
[2019-08-06 14:26:07,258 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2019-08-06 14:26:07,261 INFO  L131        ToolchainWalker]: Walking toolchain with 3 elements.
[2019-08-06 14:26:07,261 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2019-08-06 14:26:07,261 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2019-08-06 14:26:07,261 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2019-08-06 14:26:07,286 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "stmt-multiassign-safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:26:07" (1/1) ...
[2019-08-06 14:26:07,290 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "stmt-multiassign-safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:26:07" (1/1) ...
[2019-08-06 14:26:07,297 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "stmt-multiassign-safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:26:07" (1/1) ...
[2019-08-06 14:26:07,297 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "stmt-multiassign-safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:26:07" (1/1) ...
[2019-08-06 14:26:07,300 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "stmt-multiassign-safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:26:07" (1/1) ...
[2019-08-06 14:26:07,302 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "stmt-multiassign-safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:26:07" (1/1) ...
[2019-08-06 14:26:07,304 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "stmt-multiassign-safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:26:07" (1/1) ...
[2019-08-06 14:26:07,305 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2019-08-06 14:26:07,306 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2019-08-06 14:26:07,306 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2019-08-06 14:26:07,307 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2019-08-06 14:26:07,308 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "stmt-multiassign-safe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 06.08 02:26:07" (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
[2019-08-06 14:26:07,383 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration
[2019-08-06 14:26:07,383 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2019-08-06 14:26:07,383 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2019-08-06 14:26:07,600 INFO  L278             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-08-06 14:26:07,600 INFO  L283             CfgBuilder]: Removed 0 assume(true) statements.
[2019-08-06 14:26:07,601 INFO  L202        PluginConnector]: Adding new model stmt-multiassign-safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 02:26:07 BoogieIcfgContainer
[2019-08-06 14:26:07,601 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2019-08-06 14:26:07,602 INFO  L113        PluginConnector]: ------------------------Symbolic Interpretation----------------------------
[2019-08-06 14:26:07,602 INFO  L271        PluginConnector]: Initializing Symbolic Interpretation...
[2019-08-06 14:26:07,602 INFO  L275        PluginConnector]: Symbolic Interpretation initialized
[2019-08-06 14:26:07,603 INFO  L185        PluginConnector]: Executing the observer SymbolicInterpretationObserver from plugin Symbolic Interpretation for "stmt-multiassign-safe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.08 02:26:07" (1/1) ...
[2019-08-06 14:26:07,613 INFO  L148        IcfgInterpreter]: Started Sifa with 2 locations of interest
[2019-08-06 14:26:07,616 INFO  L155        IcfgInterpreter]: Building call graph
[2019-08-06 14:26:07,622 INFO  L160        IcfgInterpreter]: Initial procedures are [ULTIMATE.start]
[2019-08-06 14:26:07,631 INFO  L165        IcfgInterpreter]: Starting interpretation
[2019-08-06 14:26:07,632 INFO  L185        IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1
[2019-08-06 14:26:07,666 INFO  L169        IcfgInterpreter]: Interpretation finished
[2019-08-06 14:26:07,666 INFO  L177        IcfgInterpreter]: Final predicates for locations of interest are:
[2019-08-06 14:26:07,669 INFO  L179        IcfgInterpreter]: Location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT has predicate 10#false
[2019-08-06 14:26:07,669 INFO  L179        IcfgInterpreter]: Location ULTIMATE.startErr1ASSERT_VIOLATIONASSERT has predicate 7#(and (= 1 ULTIMATE.start_y) (= 1 ULTIMATE.start_x) (or (not (= 1 ULTIMATE.start_x)) (not (= 1 ULTIMATE.start_y))))
[2019-08-06 14:26:07,670 WARN  L88    terpretationObserver]: Some locations of interest might be reachable, see reported results.
[2019-08-06 14:26:07,677 INFO  L132        PluginConnector]: ------------------------ END Symbolic Interpretation----------------------------
[2019-08-06 14:26:07,680 INFO  L168              Benchmark]: Toolchain (without parser) took 419.48 ms. Allocated memory is still 132.6 MB. Free memory was 107.8 MB in the beginning and 92.7 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB.
[2019-08-06 14:26:07,681 INFO  L168              Benchmark]: Boogie PL CUP Parser took 0.25 ms. Allocated memory is still 132.6 MB. Free memory is still 108.6 MB. There was no memory consumed. Max. memory is 7.1 GB.
[2019-08-06 14:26:07,682 INFO  L168              Benchmark]: Boogie Preprocessor took 44.73 ms. Allocated memory is still 132.6 MB. Free memory was 107.8 MB in the beginning and 105.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB.
[2019-08-06 14:26:07,684 INFO  L168              Benchmark]: RCFGBuilder took 295.41 ms. Allocated memory is still 132.6 MB. Free memory was 105.6 MB in the beginning and 96.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
[2019-08-06 14:26:07,685 INFO  L168              Benchmark]: Symbolic Interpretation took 75.50 ms. Allocated memory is still 132.6 MB. Free memory was 96.5 MB in the beginning and 92.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB.
[2019-08-06 14:26:07,689 INFO  L335   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.plugins.symbolicinterpretation:
  - PositiveResult [Line: 11]: assertion always holds
    For all program executions holds that assertion always holds at this location
  - UnprovableResult [Line: 13]: 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 0.25 ms. Allocated memory is still 132.6 MB. Free memory is still 108.6 MB. There was no memory consumed. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 44.73 ms. Allocated memory is still 132.6 MB. Free memory was 107.8 MB in the beginning and 105.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 295.41 ms. Allocated memory is still 132.6 MB. Free memory was 105.6 MB in the beginning and 96.5 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB.
 * Symbolic Interpretation took 75.50 ms. Allocated memory is still 132.6 MB. Free memory was 96.5 MB in the beginning and 92.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB.
RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces
Received shutdown request...