java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label14_true-unreach-call.c


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This is Ultimate 0.1.23-0fd1304
[2018-10-24 00:52:06,185 INFO  L170        SettingsManager]: Resetting all preferences to default values...
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[2018-10-24 00:52:06,235 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
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[2018-10-24 00:52:06,237 INFO  L98         SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf
[2018-10-24 00:52:06,265 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-10-24 00:52:06,266 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-10-24 00:52:06,267 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-10-24 00:52:06,267 INFO  L133        SettingsManager]:  * User list type=DISABLED
[2018-10-24 00:52:06,267 INFO  L133        SettingsManager]:  * calls to implemented procedures=false
[2018-10-24 00:52:06,267 INFO  L131        SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-10-24 00:52:06,267 INFO  L133        SettingsManager]:  * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2018-10-24 00:52:06,268 INFO  L133        SettingsManager]:  * Abstract domain=CompoundDomain
[2018-10-24 00:52:06,268 INFO  L133        SettingsManager]:  * Log string format=TERM
[2018-10-24 00:52:06,268 INFO  L133        SettingsManager]:  * Check feasibility of abstract posts with an SMT solver=true
[2018-10-24 00:52:06,268 INFO  L133        SettingsManager]:  * Use the RCFG-of-the-future interface=true
[2018-10-24 00:52:06,268 INFO  L133        SettingsManager]:  * Interval Domain=false
[2018-10-24 00:52:06,269 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-10-24 00:52:06,269 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-10-24 00:52:06,269 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-10-24 00:52:06,270 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-10-24 00:52:06,270 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-10-24 00:52:06,270 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-10-24 00:52:06,270 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-10-24 00:52:06,270 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-10-24 00:52:06,270 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-10-24 00:52:06,271 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-10-24 00:52:06,271 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-10-24 00:52:06,271 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-10-24 00:52:06,271 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-24 00:52:06,271 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-10-24 00:52:06,272 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-10-24 00:52:06,272 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-10-24 00:52:06,272 INFO  L133        SettingsManager]:  * Trace refinement strategy=TAIPAN
[2018-10-24 00:52:06,272 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-10-24 00:52:06,272 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-10-24 00:52:06,273 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-10-24 00:52:06,273 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-10-24 00:52:06,273 INFO  L133        SettingsManager]:  * Abstract interpretation Mode=USE_PREDICATES
[2018-10-24 00:52:06,322 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-10-24 00:52:06,340 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-10-24 00:52:06,343 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-10-24 00:52:06,345 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-10-24 00:52:06,346 INFO  L276        PluginConnector]: CDTParser initialized
[2018-10-24 00:52:06,346 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label14_true-unreach-call.c
[2018-10-24 00:52:06,408 INFO  L218              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/278869343/283387d8952f4f7c8bfaf443a64a063f/FLAGe4dd3c4db
[2018-10-24 00:52:07,010 INFO  L298              CDTParser]: Found 1 translation units.
[2018-10-24 00:52:07,011 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label14_true-unreach-call.c
[2018-10-24 00:52:07,033 INFO  L346              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/278869343/283387d8952f4f7c8bfaf443a64a063f/FLAGe4dd3c4db
[2018-10-24 00:52:07,055 INFO  L354              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/278869343/283387d8952f4f7c8bfaf443a64a063f
[2018-10-24 00:52:07,069 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-10-24 00:52:07,071 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-10-24 00:52:07,072 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-10-24 00:52:07,072 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-10-24 00:52:07,076 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-10-24 00:52:07,077 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:52:07" (1/1) ...
[2018-10-24 00:52:07,080 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12b8561a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:52:07, skipping insertion in model container
[2018-10-24 00:52:07,081 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 12:52:07" (1/1) ...
[2018-10-24 00:52:07,092 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-10-24 00:52:07,168 INFO  L174         MainTranslator]: Built tables and reachable declarations
[2018-10-24 00:52:07,609 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-24 00:52:07,614 INFO  L189         MainTranslator]: Completed pre-run
[2018-10-24 00:52:07,733 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-24 00:52:07,757 INFO  L193         MainTranslator]: Completed translation
[2018-10-24 00:52:07,758 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:52:07 WrapperNode
[2018-10-24 00:52:07,758 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-10-24 00:52:07,759 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-10-24 00:52:07,759 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-10-24 00:52:07,759 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-10-24 00:52:07,769 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:52:07" (1/1) ...
[2018-10-24 00:52:07,800 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:52:07" (1/1) ...
[2018-10-24 00:52:07,970 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-10-24 00:52:07,971 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-10-24 00:52:07,971 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-10-24 00:52:07,971 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-10-24 00:52:07,982 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:52:07" (1/1) ...
[2018-10-24 00:52:07,982 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:52:07" (1/1) ...
[2018-10-24 00:52:07,989 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:52:07" (1/1) ...
[2018-10-24 00:52:07,989 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:52:07" (1/1) ...
[2018-10-24 00:52:08,024 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:52:07" (1/1) ...
[2018-10-24 00:52:08,034 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:52:07" (1/1) ...
[2018-10-24 00:52:08,041 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:52:07" (1/1) ...
[2018-10-24 00:52:08,050 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-10-24 00:52:08,050 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-10-24 00:52:08,051 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-10-24 00:52:08,051 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-10-24 00:52:08,052 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:52:07" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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
[2018-10-24 00:52:08,127 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-10-24 00:52:08,128 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-10-24 00:52:08,128 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2018-10-24 00:52:08,128 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2018-10-24 00:52:08,128 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-10-24 00:52:08,128 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-10-24 00:52:08,129 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2018-10-24 00:52:08,129 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2018-10-24 00:52:11,441 INFO  L341             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-10-24 00:52:11,442 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:52:11 BoogieIcfgContainer
[2018-10-24 00:52:11,442 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-10-24 00:52:11,444 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-10-24 00:52:11,447 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-10-24 00:52:11,450 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-10-24 00:52:11,451 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 12:52:07" (1/3) ...
[2018-10-24 00:52:11,451 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b88c425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:52:11, skipping insertion in model container
[2018-10-24 00:52:11,452 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 12:52:07" (2/3) ...
[2018-10-24 00:52:11,453 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b88c425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 12:52:11, skipping insertion in model container
[2018-10-24 00:52:11,453 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 12:52:11" (3/3) ...
[2018-10-24 00:52:11,455 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem10_label14_true-unreach-call.c
[2018-10-24 00:52:11,466 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-10-24 00:52:11,483 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-10-24 00:52:11,503 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-10-24 00:52:11,540 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-10-24 00:52:11,540 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-10-24 00:52:11,540 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-10-24 00:52:11,541 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-10-24 00:52:11,541 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-10-24 00:52:11,541 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-10-24 00:52:11,542 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-10-24 00:52:11,542 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-10-24 00:52:11,569 INFO  L276                IsEmpty]: Start isEmpty. Operand 216 states.
[2018-10-24 00:52:11,577 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2018-10-24 00:52:11,577 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 00:52:11,578 INFO  L375         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-24 00:52:11,581 INFO  L424      AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 00:52:11,588 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 00:52:11,589 INFO  L82        PathProgramCache]: Analyzing trace with hash -1440498332, now seen corresponding path program 1 times
[2018-10-24 00:52:11,591 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-24 00:52:11,651 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 00:52:11,651 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 00:52:11,652 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 00:52:11,652 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-24 00:52:11,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 00:52:12,101 WARN  L179               SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-10-24 00:52:12,228 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-24 00:52:12,231 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-24 00:52:12,232 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-24 00:52:12,232 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-10-24 00:52:12,238 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-24 00:52:12,255 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-24 00:52:12,256 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-24 00:52:12,259 INFO  L87              Difference]: Start difference. First operand 216 states. Second operand 3 states.
[2018-10-24 00:52:13,815 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-24 00:52:13,816 INFO  L93              Difference]: Finished difference Result 574 states and 992 transitions.
[2018-10-24 00:52:13,818 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-24 00:52:13,820 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 38
[2018-10-24 00:52:13,820 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-24 00:52:13,838 INFO  L225             Difference]: With dead ends: 574
[2018-10-24 00:52:13,838 INFO  L226             Difference]: Without dead ends: 356
[2018-10-24 00:52:13,845 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2018-10-24 00:52:13,865 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 356 states.
[2018-10-24 00:52:13,917 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356.
[2018-10-24 00:52:13,919 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 356 states.
[2018-10-24 00:52:13,923 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions.
[2018-10-24 00:52:13,925 INFO  L78                 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 38
[2018-10-24 00:52:13,926 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-24 00:52:13,926 INFO  L481      AbstractCegarLoop]: Abstraction has 356 states and 609 transitions.
[2018-10-24 00:52:13,926 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-24 00:52:13,926 INFO  L276                IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions.
[2018-10-24 00:52:13,935 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 159
[2018-10-24 00:52:13,935 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 00:52:13,936 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-24 00:52:13,936 INFO  L424      AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 00:52:13,937 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 00:52:13,937 INFO  L82        PathProgramCache]: Analyzing trace with hash 247043784, now seen corresponding path program 1 times
[2018-10-24 00:52:13,937 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-24 00:52:13,939 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 00:52:13,939 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 00:52:13,939 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 00:52:13,939 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-24 00:52:14,025 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 00:52:14,406 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-24 00:52:14,406 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-24 00:52:14,407 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-10-24 00:52:14,407 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-10-24 00:52:14,409 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-10-24 00:52:14,410 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-10-24 00:52:14,410 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-10-24 00:52:14,410 INFO  L87              Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states.
[2018-10-24 00:52:17,356 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-24 00:52:17,357 INFO  L93              Difference]: Finished difference Result 1140 states and 2022 transitions.
[2018-10-24 00:52:17,364 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-24 00:52:17,364 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 158
[2018-10-24 00:52:17,365 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-24 00:52:17,371 INFO  L225             Difference]: With dead ends: 1140
[2018-10-24 00:52:17,372 INFO  L226             Difference]: Without dead ends: 790
[2018-10-24 00:52:17,375 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2018-10-24 00:52:17,376 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 790 states.
[2018-10-24 00:52:17,423 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 784.
[2018-10-24 00:52:17,424 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 784 states.
[2018-10-24 00:52:17,432 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1300 transitions.
[2018-10-24 00:52:17,433 INFO  L78                 Accepts]: Start accepts. Automaton has 784 states and 1300 transitions. Word has length 158
[2018-10-24 00:52:17,433 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-24 00:52:17,434 INFO  L481      AbstractCegarLoop]: Abstraction has 784 states and 1300 transitions.
[2018-10-24 00:52:17,434 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-10-24 00:52:17,434 INFO  L276                IsEmpty]: Start isEmpty. Operand 784 states and 1300 transitions.
[2018-10-24 00:52:17,440 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2018-10-24 00:52:17,440 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 00:52:17,441 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-24 00:52:17,441 INFO  L424      AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 00:52:17,441 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 00:52:17,441 INFO  L82        PathProgramCache]: Analyzing trace with hash 1650350691, now seen corresponding path program 1 times
[2018-10-24 00:52:17,442 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-24 00:52:17,443 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 00:52:17,443 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 00:52:17,443 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 00:52:17,443 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-24 00:52:17,487 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 00:52:17,761 WARN  L179               SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-10-24 00:52:17,844 INFO  L134       CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-24 00:52:17,844 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-24 00:52:17,845 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2018-10-24 00:52:17,845 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-10-24 00:52:17,845 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-10-24 00:52:17,846 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-10-24 00:52:17,846 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30
[2018-10-24 00:52:17,846 INFO  L87              Difference]: Start difference. First operand 784 states and 1300 transitions. Second operand 6 states.
[2018-10-24 00:52:22,342 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-24 00:52:22,343 INFO  L93              Difference]: Finished difference Result 1975 states and 3367 transitions.
[2018-10-24 00:52:22,344 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-24 00:52:22,344 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 165
[2018-10-24 00:52:22,345 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-24 00:52:22,354 INFO  L225             Difference]: With dead ends: 1975
[2018-10-24 00:52:22,354 INFO  L226             Difference]: Without dead ends: 1197
[2018-10-24 00:52:22,362 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2018-10-24 00:52:22,364 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1197 states.
[2018-10-24 00:52:22,410 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1177.
[2018-10-24 00:52:22,411 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1177 states.
[2018-10-24 00:52:22,418 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1754 transitions.
[2018-10-24 00:52:22,419 INFO  L78                 Accepts]: Start accepts. Automaton has 1177 states and 1754 transitions. Word has length 165
[2018-10-24 00:52:22,419 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-24 00:52:22,419 INFO  L481      AbstractCegarLoop]: Abstraction has 1177 states and 1754 transitions.
[2018-10-24 00:52:22,420 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-10-24 00:52:22,422 INFO  L276                IsEmpty]: Start isEmpty. Operand 1177 states and 1754 transitions.
[2018-10-24 00:52:22,430 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 230
[2018-10-24 00:52:22,430 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 00:52:22,431 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-24 00:52:22,431 INFO  L424      AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 00:52:22,431 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 00:52:22,431 INFO  L82        PathProgramCache]: Analyzing trace with hash -837763145, now seen corresponding path program 1 times
[2018-10-24 00:52:22,432 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-24 00:52:22,432 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 00:52:22,433 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 00:52:22,433 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 00:52:22,433 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-24 00:52:22,496 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 00:52:23,127 WARN  L179               SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13
[2018-10-24 00:52:23,711 INFO  L134       CoverageAnalysis]: Checked inductivity of 133 backedges. 131 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-24 00:52:23,711 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-24 00:52:23,711 INFO  L194   anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION
[2018-10-24 00:52:23,712 INFO  L200      CegarAbsIntRunner]: Running AI on error trace of length 230 with the following transitions: 
[2018-10-24 00:52:23,715 INFO  L202      CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822]
[2018-10-24 00:52:23,795 INFO  L148    AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain]
[2018-10-24 00:52:23,795 INFO  L101         FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2)
[2018-10-24 00:52:25,928 WARN  L79         EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.
[2018-10-24 00:52:49,819 INFO  L266    AbstractInterpreter]: Error location(s) were unreachable
[2018-10-24 00:52:49,821 INFO  L272    AbstractInterpreter]: Visited 128 different actions 738 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables.
[2018-10-24 00:52:49,840 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 00:52:49,840 INFO  L398   sIntCurrentIteration]: Generating AbsInt predicates
[2018-10-24 00:52:53,473 INFO  L232   lantSequenceWeakener]: Weakened 56 states. On average, predicates are now at 75.3% of their original sizes.
[2018-10-24 00:52:53,474 INFO  L411   sIntCurrentIteration]: Unifying AI predicates
[2018-10-24 00:53:11,320 INFO  L422   sIntCurrentIteration]: Finished generation of AbsInt predicates
[2018-10-24 00:53:11,321 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-10-24 00:53:11,321 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [13] total 27
[2018-10-24 00:53:11,321 INFO  L258   anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-10-24 00:53:11,322 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 16 states
[2018-10-24 00:53:11,322 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2018-10-24 00:53:11,323 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240
[2018-10-24 00:53:11,323 INFO  L87              Difference]: Start difference. First operand 1177 states and 1754 transitions. Second operand 16 states.
[2018-10-24 00:55:16,909 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-24 00:55:16,910 INFO  L93              Difference]: Finished difference Result 2808 states and 4265 transitions.
[2018-10-24 00:55:16,910 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. 
[2018-10-24 00:55:16,910 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states. Word has length 229
[2018-10-24 00:55:16,911 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-24 00:55:16,920 INFO  L225             Difference]: With dead ends: 2808
[2018-10-24 00:55:16,920 INFO  L226             Difference]: Without dead ends: 1637
[2018-10-24 00:55:16,925 INFO  L605         BasicCegarLoop]: 2 DeclaredPredicates, 236 GetRequests, 188 SyntacticMatches, 26 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552
[2018-10-24 00:55:16,926 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1637 states.
[2018-10-24 00:55:17,036 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1619.
[2018-10-24 00:55:17,037 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1619 states.
[2018-10-24 00:55:17,043 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1619 states to 1619 states and 2226 transitions.
[2018-10-24 00:55:17,044 INFO  L78                 Accepts]: Start accepts. Automaton has 1619 states and 2226 transitions. Word has length 229
[2018-10-24 00:55:17,044 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-24 00:55:17,044 INFO  L481      AbstractCegarLoop]: Abstraction has 1619 states and 2226 transitions.
[2018-10-24 00:55:17,044 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 16 states.
[2018-10-24 00:55:17,045 INFO  L276                IsEmpty]: Start isEmpty. Operand 1619 states and 2226 transitions.
[2018-10-24 00:55:17,051 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 239
[2018-10-24 00:55:17,051 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-24 00:55:17,052 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-24 00:55:17,052 INFO  L424      AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-24 00:55:17,052 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 00:55:17,052 INFO  L82        PathProgramCache]: Analyzing trace with hash 910411004, now seen corresponding path program 1 times
[2018-10-24 00:55:17,053 INFO  L69    tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy
[2018-10-24 00:55:17,054 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 00:55:17,054 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-24 00:55:17,054 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-24 00:55:17,054 INFO  L288   anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-10-24 00:55:17,089 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-24 00:55:17,365 WARN  L179               SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-10-24 00:55:17,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 142 backedges. 63 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked.
[2018-10-24 00:55:17,654 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-24 00:55:17,654 INFO  L194   anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION
[2018-10-24 00:55:17,654 INFO  L200      CegarAbsIntRunner]: Running AI on error trace of length 239 with the following transitions: 
[2018-10-24 00:55:17,655 INFO  L202      CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [205], [207], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822]
[2018-10-24 00:55:17,666 INFO  L148    AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain]
[2018-10-24 00:55:17,667 INFO  L101         FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2)
[2018-10-24 00:55:19,270 WARN  L79         EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation.
[2018-10-24 00:55:39,967 INFO  L266    AbstractInterpreter]: Error location(s) were unreachable
[2018-10-24 00:55:39,967 INFO  L272    AbstractInterpreter]: Visited 128 different actions 738 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 24 variables.
[2018-10-24 00:55:39,972 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-24 00:55:39,972 INFO  L398   sIntCurrentIteration]: Generating AbsInt predicates
[2018-10-24 00:55:42,252 INFO  L232   lantSequenceWeakener]: Weakened 53 states. On average, predicates are now at 74.1% of their original sizes.
[2018-10-24 00:55:42,253 INFO  L411   sIntCurrentIteration]: Unifying AI predicates
Received shutdown request...
[2018-10-24 00:56:02,869 WARN  L550      AbstractCegarLoop]: Verification canceled
[2018-10-24 00:56:02,874 WARN  L205   ceAbstractionStarter]: Timeout
[2018-10-24 00:56:02,875 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 12:56:02 BoogieIcfgContainer
[2018-10-24 00:56:02,875 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-10-24 00:56:02,876 INFO  L168              Benchmark]: Toolchain (without parser) took 235806.39 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.1 GB). Peak memory consumption was 569.4 MB. Max. memory is 7.1 GB.
[2018-10-24 00:56:02,877 INFO  L168              Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-24 00:56:02,878 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 686.34 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB.
[2018-10-24 00:56:02,880 INFO  L168              Benchmark]: Boogie Procedure Inliner took 211.24 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 714.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB.
[2018-10-24 00:56:02,882 INFO  L168              Benchmark]: Boogie Preprocessor took 79.36 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-24 00:56:02,882 INFO  L168              Benchmark]: RCFGBuilder took 3391.99 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 121.1 MB). Peak memory consumption was 121.1 MB. Max. memory is 7.1 GB.
[2018-10-24 00:56:02,883 INFO  L168              Benchmark]: TraceAbstraction took 231431.42 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 491.3 MB. Max. memory is 7.1 GB.
[2018-10-24 00:56:02,892 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 686.34 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 211.24 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 714.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -789.3 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 79.36 ms. Allocated memory is still 2.2 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * RCFGBuilder took 3391.99 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 121.1 MB). Peak memory consumption was 121.1 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 231431.42 ms. Allocated memory was 2.2 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.0 GB in the beginning and 3.4 GB in the end (delta: -1.4 GB). Peak memory consumption was 491.3 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction)
    Unable to prove that call of __VERIFIER_error() unreachable (line 97). Cancelled while BasicCegarLoop was analyzing trace of length 239 with TraceHistMax 3,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 15 known predicates.
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 231.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 134.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 455 SDtfs, 2720 SDslu, 552 SDs, 0 SdLazy, 4740 SolverSat, 898 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 68.4s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 260 GetRequests, 195 SyntacticMatches, 30 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 19.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1619occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 48.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9949275362318839 AbsIntWeakeningRatio, 0.11182795698924732 AbsIntAvgWeakeningVarsNumRemoved, 173.2537634408602 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 44 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 590 NumberOfCodeBlocks, 590 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 586 ConstructedInterpolants, 0 QuantifiedInterpolants, 902241 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 193/195 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown