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/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label36_true-unreach-call.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.23-1dbac8b
[2018-10-26 21:53:21,355 INFO  L170        SettingsManager]: Resetting all preferences to default values...
[2018-10-26 21:53:21,357 INFO  L174        SettingsManager]: Resetting UltimateCore preferences to default values
[2018-10-26 21:53:21,369 INFO  L177        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-10-26 21:53:21,369 INFO  L174        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-10-26 21:53:21,370 INFO  L174        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-10-26 21:53:21,372 INFO  L174        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-10-26 21:53:21,373 INFO  L174        SettingsManager]: Resetting LassoRanker preferences to default values
[2018-10-26 21:53:21,375 INFO  L174        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2018-10-26 21:53:21,376 INFO  L174        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2018-10-26 21:53:21,377 INFO  L177        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2018-10-26 21:53:21,377 INFO  L174        SettingsManager]: Resetting LTL2Aut preferences to default values
[2018-10-26 21:53:21,378 INFO  L174        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2018-10-26 21:53:21,379 INFO  L174        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2018-10-26 21:53:21,380 INFO  L174        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2018-10-26 21:53:21,381 INFO  L174        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-10-26 21:53:21,382 INFO  L174        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-10-26 21:53:21,384 INFO  L174        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-10-26 21:53:21,386 INFO  L174        SettingsManager]: Resetting CodeCheck preferences to default values
[2018-10-26 21:53:21,387 INFO  L174        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-10-26 21:53:21,388 INFO  L174        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-10-26 21:53:21,390 INFO  L174        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-10-26 21:53:21,393 INFO  L177        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2018-10-26 21:53:21,394 INFO  L177        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2018-10-26 21:53:21,394 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-10-26 21:53:21,395 INFO  L174        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2018-10-26 21:53:21,396 INFO  L174        SettingsManager]: Resetting Boogie Printer preferences to default values
[2018-10-26 21:53:21,396 INFO  L174        SettingsManager]: Resetting ReqPrinter preferences to default values
[2018-10-26 21:53:21,399 INFO  L174        SettingsManager]: Resetting Witness Printer preferences to default values
[2018-10-26 21:53:21,402 INFO  L177        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2018-10-26 21:53:21,402 INFO  L174        SettingsManager]: Resetting CDTParser preferences to default values
[2018-10-26 21:53:21,404 INFO  L177        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2018-10-26 21:53:21,404 INFO  L177        SettingsManager]: ReqParser provides no preferences, ignoring...
[2018-10-26 21:53:21,404 INFO  L174        SettingsManager]: Resetting SmtParser preferences to default values
[2018-10-26 21:53:21,406 INFO  L174        SettingsManager]: Resetting Witness Parser preferences to default values
[2018-10-26 21:53:21,407 INFO  L181        SettingsManager]: Finished resetting all preferences to default values...
[2018-10-26 21:53:21,407 INFO  L98         SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf
[2018-10-26 21:53:21,436 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-10-26 21:53:21,436 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-10-26 21:53:21,437 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-10-26 21:53:21,437 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-10-26 21:53:21,441 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-10-26 21:53:21,441 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-10-26 21:53:21,442 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-10-26 21:53:21,442 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-10-26 21:53:21,442 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-10-26 21:53:21,442 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-10-26 21:53:21,442 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-10-26 21:53:21,444 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-10-26 21:53:21,444 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-10-26 21:53:21,444 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-10-26 21:53:21,444 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-10-26 21:53:21,444 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-10-26 21:53:21,445 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-10-26 21:53:21,445 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-10-26 21:53:21,445 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-10-26 21:53:21,445 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-26 21:53:21,445 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-10-26 21:53:21,446 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-10-26 21:53:21,447 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-10-26 21:53:21,447 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-10-26 21:53:21,447 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-10-26 21:53:21,447 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-10-26 21:53:21,448 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-10-26 21:53:21,448 INFO  L133        SettingsManager]:  * To the following directory=dump/
[2018-10-26 21:53:21,506 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-10-26 21:53:21,518 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-10-26 21:53:21,522 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-10-26 21:53:21,524 INFO  L271        PluginConnector]: Initializing CDTParser...
[2018-10-26 21:53:21,524 INFO  L276        PluginConnector]: CDTParser initialized
[2018-10-26 21:53:21,525 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label36_true-unreach-call.c
[2018-10-26 21:53:21,584 INFO  L218              CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/05918531d/90f0c842da5349ab9e73e3fe802326d3/FLAG1974bc843
[2018-10-26 21:53:22,290 INFO  L298              CDTParser]: Found 1 translation units.
[2018-10-26 21:53:22,291 INFO  L158              CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label36_true-unreach-call.c
[2018-10-26 21:53:22,315 INFO  L346              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/05918531d/90f0c842da5349ab9e73e3fe802326d3/FLAG1974bc843
[2018-10-26 21:53:22,334 INFO  L354              CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/05918531d/90f0c842da5349ab9e73e3fe802326d3
[2018-10-26 21:53:22,345 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-10-26 21:53:22,347 INFO  L131        ToolchainWalker]: Walking toolchain with 5 elements.
[2018-10-26 21:53:22,348 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-10-26 21:53:22,348 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-10-26 21:53:22,353 INFO  L276        PluginConnector]: CACSL2BoogieTranslator initialized
[2018-10-26 21:53:22,354 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:53:22" (1/1) ...
[2018-10-26 21:53:22,357 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@100fc25b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:22, skipping insertion in model container
[2018-10-26 21:53:22,358 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:53:22" (1/1) ...
[2018-10-26 21:53:22,369 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2018-10-26 21:53:22,499 INFO  L174         MainTranslator]: Built tables and reachable declarations
[2018-10-26 21:53:23,473 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-26 21:53:23,478 INFO  L189         MainTranslator]: Completed pre-run
[2018-10-26 21:53:23,891 INFO  L202          PostProcessor]: Analyzing one entry point: main
[2018-10-26 21:53:23,916 INFO  L193         MainTranslator]: Completed translation
[2018-10-26 21:53:23,916 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23 WrapperNode
[2018-10-26 21:53:23,917 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-10-26 21:53:23,917 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-10-26 21:53:23,918 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-10-26 21:53:23,919 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-10-26 21:53:23,929 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ...
[2018-10-26 21:53:23,984 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ...
[2018-10-26 21:53:24,435 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-10-26 21:53:24,436 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-10-26 21:53:24,436 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-10-26 21:53:24,436 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-10-26 21:53:24,447 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ...
[2018-10-26 21:53:24,447 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ...
[2018-10-26 21:53:24,499 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ...
[2018-10-26 21:53:24,500 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ...
[2018-10-26 21:53:24,640 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ...
[2018-10-26 21:53:24,683 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ...
[2018-10-26 21:53:24,726 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (1/1) ...
[2018-10-26 21:53:24,765 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-10-26 21:53:24,766 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-10-26 21:53:24,766 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-10-26 21:53:24,766 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-10-26 21:53:24,767 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (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
[2018-10-26 21:53:24,834 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2018-10-26 21:53:24,835 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-10-26 21:53:24,835 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-10-26 21:53:35,247 INFO  L341             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-10-26 21:53:35,249 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:53:35 BoogieIcfgContainer
[2018-10-26 21:53:35,249 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-10-26 21:53:35,251 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-10-26 21:53:35,251 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-10-26 21:53:35,254 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-10-26 21:53:35,255 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:53:22" (1/3) ...
[2018-10-26 21:53:35,255 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a22646c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:53:35, skipping insertion in model container
[2018-10-26 21:53:35,256 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:23" (2/3) ...
[2018-10-26 21:53:35,256 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a22646c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:53:35, skipping insertion in model container
[2018-10-26 21:53:35,256 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:53:35" (3/3) ...
[2018-10-26 21:53:35,258 INFO  L112   eAbstractionObserver]: Analyzing ICFG Problem17_label36_true-unreach-call.c
[2018-10-26 21:53:35,269 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-10-26 21:53:35,279 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-10-26 21:53:35,297 INFO  L257      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2018-10-26 21:53:35,342 INFO  L135   ementStrategyFactory]: Using default assertion order modulation
[2018-10-26 21:53:35,343 INFO  L382      AbstractCegarLoop]: Interprodecural is true
[2018-10-26 21:53:35,343 INFO  L383      AbstractCegarLoop]: Hoare is true
[2018-10-26 21:53:35,343 INFO  L384      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-10-26 21:53:35,343 INFO  L385      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-10-26 21:53:35,343 INFO  L386      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-10-26 21:53:35,344 INFO  L387      AbstractCegarLoop]: Difference is false
[2018-10-26 21:53:35,344 INFO  L388      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-10-26 21:53:35,344 INFO  L393      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-10-26 21:53:35,377 INFO  L276                IsEmpty]: Start isEmpty. Operand 591 states.
[2018-10-26 21:53:35,387 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2018-10-26 21:53:35,388 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 21:53:35,389 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-10-26 21:53:35,392 INFO  L424      AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 21:53:35,398 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 21:53:35,399 INFO  L82        PathProgramCache]: Analyzing trace with hash 1482679290, now seen corresponding path program 1 times
[2018-10-26 21:53:35,401 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 21:53:35,402 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 21:53:35,451 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 21:53:35,452 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 21:53:35,452 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 21:53:35,571 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 21:53:35,976 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-26 21:53:35,979 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 21:53:35,979 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-26 21:53:35,985 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-26 21:53:36,001 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-26 21:53:36,002 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 21:53:36,005 INFO  L87              Difference]: Start difference. First operand 591 states. Second operand 4 states.
[2018-10-26 21:53:48,689 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 21:53:48,689 INFO  L93              Difference]: Finished difference Result 2097 states and 3909 transitions.
[2018-10-26 21:53:48,690 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-26 21:53:48,691 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 58
[2018-10-26 21:53:48,692 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 21:53:48,724 INFO  L225             Difference]: With dead ends: 2097
[2018-10-26 21:53:48,724 INFO  L226             Difference]: Without dead ends: 1499
[2018-10-26 21:53:48,732 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 21:53:48,753 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 1499 states.
[2018-10-26 21:53:48,865 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1485.
[2018-10-26 21:53:48,867 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 1485 states.
[2018-10-26 21:53:48,872 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2304 transitions.
[2018-10-26 21:53:48,874 INFO  L78                 Accepts]: Start accepts. Automaton has 1485 states and 2304 transitions. Word has length 58
[2018-10-26 21:53:48,874 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 21:53:48,875 INFO  L481      AbstractCegarLoop]: Abstraction has 1485 states and 2304 transitions.
[2018-10-26 21:53:48,875 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-26 21:53:48,875 INFO  L276                IsEmpty]: Start isEmpty. Operand 1485 states and 2304 transitions.
[2018-10-26 21:53:48,884 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 127
[2018-10-26 21:53:48,885 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 21:53:48,887 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, 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]
[2018-10-26 21:53:48,887 INFO  L424      AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 21:53:48,887 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 21:53:48,888 INFO  L82        PathProgramCache]: Analyzing trace with hash 1628254546, now seen corresponding path program 1 times
[2018-10-26 21:53:48,888 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 21:53:48,888 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 21:53:48,889 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 21:53:48,890 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 21:53:48,890 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 21:53:48,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 21:53:49,146 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-26 21:53:49,146 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-26 21:53:49,146 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-10-26 21:53:49,148 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-26 21:53:49,149 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-26 21:53:49,149 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 21:53:49,149 INFO  L87              Difference]: Start difference. First operand 1485 states and 2304 transitions. Second operand 4 states.
[2018-10-26 21:53:55,481 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-26 21:53:55,482 INFO  L93              Difference]: Finished difference Result 4257 states and 6664 transitions.
[2018-10-26 21:53:55,482 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-26 21:53:55,482 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 126
[2018-10-26 21:53:55,483 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-26 21:53:55,497 INFO  L225             Difference]: With dead ends: 4257
[2018-10-26 21:53:55,497 INFO  L226             Difference]: Without dead ends: 2774
[2018-10-26 21:53:55,503 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-10-26 21:53:55,505 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 2774 states.
[2018-10-26 21:53:55,555 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2774.
[2018-10-26 21:53:55,555 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 2774 states.
[2018-10-26 21:53:55,561 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 3714 transitions.
[2018-10-26 21:53:55,561 INFO  L78                 Accepts]: Start accepts. Automaton has 2774 states and 3714 transitions. Word has length 126
[2018-10-26 21:53:55,562 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-26 21:53:55,562 INFO  L481      AbstractCegarLoop]: Abstraction has 2774 states and 3714 transitions.
[2018-10-26 21:53:55,562 INFO  L482      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-26 21:53:55,562 INFO  L276                IsEmpty]: Start isEmpty. Operand 2774 states and 3714 transitions.
[2018-10-26 21:53:55,565 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2018-10-26 21:53:55,565 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-26 21:53:55,565 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, 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]
[2018-10-26 21:53:55,566 INFO  L424      AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-10-26 21:53:55,568 INFO  L141       PredicateUnifier]: Initialized classic predicate unifier
[2018-10-26 21:53:55,568 INFO  L82        PathProgramCache]: Analyzing trace with hash -431004601, now seen corresponding path program 1 times
[2018-10-26 21:53:55,568 INFO  L225   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-26 21:53:55,568 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-26 21:53:55,569 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 21:53:55,570 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 21:53:55,570 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-26 21:53:55,629 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 21:53:55,875 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-26 21:53:55,875 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-26 21:53:55,875 INFO  L225   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3
Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-26 21:53:55,891 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-26 21:53:55,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-26 21:53:55,959 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-26 21:54:12,510 WARN  L179               SmtUtils]: Spent 16.28 s on a formula simplification. DAG size of input: 135 DAG size of output: 73
[2018-10-26 21:54:13,080 INFO  L134       CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-26 21:54:13,111 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences.
[2018-10-26 21:54:13,111 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6
[2018-10-26 21:54:13,113 INFO  L460      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-26 21:54:13,114 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-26 21:54:13,114 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42
[2018-10-26 21:54:13,114 INFO  L87              Difference]: Start difference. First operand 2774 states and 3714 transitions. Second operand 7 states.
[2018-10-26 21:54:23,557 WARN  L179               SmtUtils]: Spent 8.09 s on a formula simplification that was a NOOP. DAG size: 78
[2018-10-26 21:54:33,025 WARN  L179               SmtUtils]: Spent 8.10 s on a formula simplification that was a NOOP. DAG size: 77
Received shutdown request...
[2018-10-26 21:57:53,612 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-26 21:57:53,613 WARN  L550      AbstractCegarLoop]: Verification canceled
[2018-10-26 21:57:53,619 WARN  L205   ceAbstractionStarter]: Timeout
[2018-10-26 21:57:53,620 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:57:53 BoogieIcfgContainer
[2018-10-26 21:57:53,620 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-10-26 21:57:53,621 INFO  L168              Benchmark]: Toolchain (without parser) took 271275.33 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -601.0 MB). Peak memory consumption was 538.8 MB. Max. memory is 7.1 GB.
[2018-10-26 21:57:53,622 INFO  L168              Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-26 21:57:53,623 INFO  L168              Benchmark]: CACSL2BoogieTranslator took 1569.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB.
[2018-10-26 21:57:53,624 INFO  L168              Benchmark]: Boogie Procedure Inliner took 518.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -925.9 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB.
[2018-10-26 21:57:53,625 INFO  L168              Benchmark]: Boogie Preprocessor took 330.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB.
[2018-10-26 21:57:53,626 INFO  L168              Benchmark]: RCFGBuilder took 10483.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 470.4 MB). Peak memory consumption was 470.4 MB. Max. memory is 7.1 GB.
[2018-10-26 21:57:53,626 INFO  L168              Benchmark]: TraceAbstraction took 258369.64 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 339.7 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -324.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB.
[2018-10-26 21:57:53,632 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * CACSL2BoogieTranslator took 1569.05 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 518.02 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -925.9 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 330.07 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 41.4 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB.
 * RCFGBuilder took 10483.30 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 470.4 MB). Peak memory consumption was 470.4 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 258369.64 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 339.7 MB). Free memory was 1.7 GB in the beginning and 2.0 GB in the end (delta: -324.3 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - TimeoutResultAtElement [Line: 179]: Timeout (TraceAbstraction)
    Unable to prove that call of __VERIFIER_error() unreachable (line 179). Cancelled while BasicCegarLoop was constructing difference of abstraction (2774states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (6996 states constructedinput type IntersectNwa).
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 258.2s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 239.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1234 SDtfs, 4116 SDslu, 780 SDs, 0 SdLazy, 7886 SolverSat, 2365 SolverUnsat, 94 SolverUnknown, 0 SolverNotchecked, 219.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 143 GetRequests, 129 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 33.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2774occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 17.8s InterpolantComputationTime, 442 NumberOfCodeBlocks, 442 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 438 ConstructedInterpolants, 56 QuantifiedInterpolants, 1302530 SizeOfPredicates, 1 NumberOfNonLiveVariables, 193 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 110/165 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Completed graceful shutdown