java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label47_true-unreach-call.c
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This is Ultimate 0.1.23-69f5bdd-m
[2018-09-18 10:15:52,947 INFO L170 SettingsManager]: Resetting all preferences to default values...
[2018-09-18 10:15:52,949 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values
[2018-09-18 10:15:52,961 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2018-09-18 10:15:52,962 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2018-09-18 10:15:52,963 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2018-09-18 10:15:52,964 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2018-09-18 10:15:52,966 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values
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[2018-09-18 10:15:52,974 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2018-09-18 10:15:52,975 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-09-18 10:15:52,977 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
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[2018-09-18 10:15:52,980 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-09-18 10:15:52,982 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values
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[2018-09-18 10:15:52,986 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-09-18 10:15:52,987 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values
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[2018-09-18 10:15:52,993 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values
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[2018-09-18 10:15:52,995 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf
[2018-09-18 10:15:53,012 INFO L110 SettingsManager]: Loading preferences was successful
[2018-09-18 10:15:53,012 INFO L112 SettingsManager]: Preferences different from defaults after loading the file:
[2018-09-18 10:15:53,015 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-09-18 10:15:53,015 INFO L133 SettingsManager]: * User list type=DISABLED
[2018-09-18 10:15:53,016 INFO L133 SettingsManager]: * calls to implemented procedures=false
[2018-09-18 10:15:53,016 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults:
[2018-09-18 10:15:53,016 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain
[2018-09-18 10:15:53,016 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain
[2018-09-18 10:15:53,016 INFO L133 SettingsManager]: * Log string format=TERM
[2018-09-18 10:15:53,017 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true
[2018-09-18 10:15:53,017 INFO L133 SettingsManager]: * Parallel states before merging=1
[2018-09-18 10:15:53,017 INFO L133 SettingsManager]: * Interval Domain=false
[2018-09-18 10:15:53,020 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-09-18 10:15:53,020 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true
[2018-09-18 10:15:53,020 INFO L133 SettingsManager]: * Check division by zero=IGNORE
[2018-09-18 10:15:53,022 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2018-09-18 10:15:53,022 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-09-18 10:15:53,022 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2018-09-18 10:15:53,022 INFO L133 SettingsManager]: * Check if freed pointer was valid=false
[2018-09-18 10:15:53,023 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2018-09-18 10:15:53,023 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-09-18 10:15:53,023 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements
[2018-09-18 10:15:53,023 INFO L133 SettingsManager]: * To the following directory=./dump/
[2018-09-18 10:15:53,024 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode
[2018-09-18 10:15:53,024 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-09-18 10:15:53,024 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-09-18 10:15:53,024 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2018-09-18 10:15:53,025 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-09-18 10:15:53,025 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN
[2018-09-18 10:15:53,025 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2018-09-18 10:15:53,025 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-09-18 10:15:53,025 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-09-18 10:15:53,026 INFO L133 SettingsManager]: * To the following directory=dump/
[2018-09-18 10:15:53,026 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES
[2018-09-18 10:15:53,081 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2018-09-18 10:15:53,100 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-09-18 10:15:53,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-09-18 10:15:53,108 INFO L271 PluginConnector]: Initializing CDTParser...
[2018-09-18 10:15:53,109 INFO L276 PluginConnector]: CDTParser initialized
[2018-09-18 10:15:53,109 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label47_true-unreach-call.c
[2018-09-18 10:15:53,446 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123d159f2/2803e479681044839102d7334429f4ad/FLAG4fb0eecc5
[2018-09-18 10:15:53,799 INFO L277 CDTParser]: Found 1 translation units.
[2018-09-18 10:15:53,803 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label47_true-unreach-call.c
[2018-09-18 10:15:53,828 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123d159f2/2803e479681044839102d7334429f4ad/FLAG4fb0eecc5
[2018-09-18 10:15:53,849 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/123d159f2/2803e479681044839102d7334429f4ad
[2018-09-18 10:15:53,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-09-18 10:15:53,867 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements.
[2018-09-18 10:15:53,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2018-09-18 10:15:53,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator...
[2018-09-18 10:15:53,878 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized
[2018-09-18 10:15:53,879 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:15:53" (1/1) ...
[2018-09-18 10:15:53,882 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ca53d20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:53, skipping insertion in model container
[2018-09-18 10:15:53,882 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:15:53" (1/1) ...
[2018-09-18 10:15:53,894 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode
[2018-09-18 10:15:54,641 INFO L170 PostProcessor]: Settings: Checked method=main
[2018-09-18 10:15:54,661 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode
[2018-09-18 10:15:54,910 INFO L170 PostProcessor]: Settings: Checked method=main
[2018-09-18 10:15:54,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:54 WrapperNode
[2018-09-18 10:15:54,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2018-09-18 10:15:54,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-09-18 10:15:54,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-09-18 10:15:54,991 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized
[2018-09-18 10:15:55,002 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:54" (1/1) ...
[2018-09-18 10:15:55,044 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:54" (1/1) ...
[2018-09-18 10:15:55,146 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-09-18 10:15:55,147 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-09-18 10:15:55,147 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2018-09-18 10:15:55,147 INFO L276 PluginConnector]: Boogie Preprocessor initialized
[2018-09-18 10:15:55,391 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:54" (1/1) ...
[2018-09-18 10:15:55,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:54" (1/1) ...
[2018-09-18 10:15:55,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:54" (1/1) ...
[2018-09-18 10:15:55,401 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:54" (1/1) ...
[2018-09-18 10:15:55,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:54" (1/1) ...
[2018-09-18 10:15:55,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:54" (1/1) ...
[2018-09-18 10:15:55,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:54" (1/1) ...
[2018-09-18 10:15:55,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-09-18 10:15:55,554 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-09-18 10:15:55,554 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2018-09-18 10:15:55,554 INFO L276 PluginConnector]: RCFGBuilder initialized
[2018-09-18 10:15:55,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:54" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-09-18 10:15:55,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2018-09-18 10:15:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2018-09-18 10:15:55,631 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output
[2018-09-18 10:15:55,631 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output
[2018-09-18 10:15:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-09-18 10:15:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-09-18 10:15:55,632 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2018-09-18 10:15:55,632 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2018-09-18 10:16:01,277 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-09-18 10:16:01,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:16:01 BoogieIcfgContainer
[2018-09-18 10:16:01,278 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-09-18 10:16:01,280 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-09-18 10:16:01,281 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2018-09-18 10:16:01,285 INFO L276 PluginConnector]: TraceAbstraction initialized
[2018-09-18 10:16:01,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:15:53" (1/3) ...
[2018-09-18 10:16:01,286 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e816e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:16:01, skipping insertion in model container
[2018-09-18 10:16:01,287 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:15:54" (2/3) ...
[2018-09-18 10:16:01,288 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74e816e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:16:01, skipping insertion in model container
[2018-09-18 10:16:01,288 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:16:01" (3/3) ...
[2018-09-18 10:16:01,291 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label47_true-unreach-call.c
[2018-09-18 10:16:01,302 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-09-18 10:16:01,313 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-09-18 10:16:01,377 INFO L130 ementStrategyFactory]: Using default assertion order modulation
[2018-09-18 10:16:01,378 INFO L381 AbstractCegarLoop]: Interprodecural is true
[2018-09-18 10:16:01,378 INFO L382 AbstractCegarLoop]: Hoare is true
[2018-09-18 10:16:01,378 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-09-18 10:16:01,379 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-09-18 10:16:01,379 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-09-18 10:16:01,379 INFO L386 AbstractCegarLoop]: Difference is false
[2018-09-18 10:16:01,379 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-09-18 10:16:01,379 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-09-18 10:16:01,422 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states.
[2018-09-18 10:16:01,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205
[2018-09-18 10:16:01,460 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:16:01,462 INFO L376 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:16:01,463 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:16:01,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1857262073, now seen corresponding path program 1 times
[2018-09-18 10:16:01,473 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:16:01,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:01,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:01,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:01,536 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:16:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:02,487 WARN L178 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 4
[2018-09-18 10:16:02,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:02,808 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-18 10:16:02,808 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-09-18 10:16:02,808 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-18 10:16:02,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-09-18 10:16:02,831 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-09-18 10:16:02,832 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-09-18 10:16:02,835 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states.
[2018-09-18 10:16:06,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:16:06,275 INFO L93 Difference]: Finished difference Result 1082 states and 1941 transitions.
[2018-09-18 10:16:06,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2018-09-18 10:16:06,278 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 204
[2018-09-18 10:16:06,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:16:06,304 INFO L225 Difference]: With dead ends: 1082
[2018-09-18 10:16:06,304 INFO L226 Difference]: Without dead ends: 764
[2018-09-18 10:16:06,312 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2018-09-18 10:16:06,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states.
[2018-09-18 10:16:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 522.
[2018-09-18 10:16:06,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states.
[2018-09-18 10:16:06,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 918 transitions.
[2018-09-18 10:16:06,404 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 918 transitions. Word has length 204
[2018-09-18 10:16:06,405 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:16:06,406 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 918 transitions.
[2018-09-18 10:16:06,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-09-18 10:16:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 918 transitions.
[2018-09-18 10:16:06,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216
[2018-09-18 10:16:06,419 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:16:06,422 INFO L376 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:16:06,422 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:16:06,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1605898472, now seen corresponding path program 1 times
[2018-09-18 10:16:06,423 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:16:06,424 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:06,424 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:06,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:06,425 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:16:06,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:06,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:06,719 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-18 10:16:06,719 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2018-09-18 10:16:06,720 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-18 10:16:06,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-09-18 10:16:06,722 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-09-18 10:16:06,722 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2018-09-18 10:16:06,723 INFO L87 Difference]: Start difference. First operand 522 states and 918 transitions. Second operand 5 states.
[2018-09-18 10:16:10,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:16:10,028 INFO L93 Difference]: Finished difference Result 1610 states and 2933 transitions.
[2018-09-18 10:16:10,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2018-09-18 10:16:10,028 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215
[2018-09-18 10:16:10,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:16:10,043 INFO L225 Difference]: With dead ends: 1610
[2018-09-18 10:16:10,043 INFO L226 Difference]: Without dead ends: 1094
[2018-09-18 10:16:10,047 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56
[2018-09-18 10:16:10,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states.
[2018-09-18 10:16:10,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1071.
[2018-09-18 10:16:10,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states.
[2018-09-18 10:16:10,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1767 transitions.
[2018-09-18 10:16:10,131 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1767 transitions. Word has length 215
[2018-09-18 10:16:10,131 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:16:10,131 INFO L480 AbstractCegarLoop]: Abstraction has 1071 states and 1767 transitions.
[2018-09-18 10:16:10,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-09-18 10:16:10,132 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1767 transitions.
[2018-09-18 10:16:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226
[2018-09-18 10:16:10,138 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:16:10,140 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:16:10,140 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:16:10,141 INFO L82 PathProgramCache]: Analyzing trace with hash -305112671, now seen corresponding path program 1 times
[2018-09-18 10:16:10,141 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:16:10,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:10,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:10,142 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:10,142 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:16:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:10,397 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2018-09-18 10:16:10,397 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:16:10,398 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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
[2018-09-18 10:16:10,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:10,408 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:16:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:10,614 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:16:10,861 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2018-09-18 10:16:10,861 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:16:11,156 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2018-09-18 10:16:11,180 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences.
[2018-09-18 10:16:11,181 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10
[2018-09-18 10:16:11,181 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-18 10:16:11,182 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-09-18 10:16:11,182 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-09-18 10:16:11,182 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90
[2018-09-18 10:16:11,183 INFO L87 Difference]: Start difference. First operand 1071 states and 1767 transitions. Second operand 5 states.
[2018-09-18 10:16:13,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:16:13,356 INFO L93 Difference]: Finished difference Result 3239 states and 5428 transitions.
[2018-09-18 10:16:13,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2018-09-18 10:16:13,359 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 225
[2018-09-18 10:16:13,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:16:13,373 INFO L225 Difference]: With dead ends: 3239
[2018-09-18 10:16:13,374 INFO L226 Difference]: Without dead ends: 2174
[2018-09-18 10:16:13,378 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 458 GetRequests, 444 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132
[2018-09-18 10:16:13,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2174 states.
[2018-09-18 10:16:13,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2174 to 2150.
[2018-09-18 10:16:13,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2150 states.
[2018-09-18 10:16:13,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2150 states to 2150 states and 3572 transitions.
[2018-09-18 10:16:13,461 INFO L78 Accepts]: Start accepts. Automaton has 2150 states and 3572 transitions. Word has length 225
[2018-09-18 10:16:13,462 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:16:13,462 INFO L480 AbstractCegarLoop]: Abstraction has 2150 states and 3572 transitions.
[2018-09-18 10:16:13,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-09-18 10:16:13,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2150 states and 3572 transitions.
[2018-09-18 10:16:13,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229
[2018-09-18 10:16:13,473 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:16:13,473 INFO L376 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:16:13,474 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:16:13,474 INFO L82 PathProgramCache]: Analyzing trace with hash 1231516388, now seen corresponding path program 1 times
[2018-09-18 10:16:13,474 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:16:13,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:13,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:13,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:13,476 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:16:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:13,768 WARN L178 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-09-18 10:16:13,873 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:13,874 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:16:13,874 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:16:13,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:13,883 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:16:14,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:14,088 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:16:14,260 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:14,260 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:16:14,716 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:14,738 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:16:14,738 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu
Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000
[2018-09-18 10:16:14,756 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:14,757 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:16:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:15,160 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:16:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:15,621 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:16:15,768 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:15,771 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-18 10:16:15,771 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 14
[2018-09-18 10:16:15,771 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-18 10:16:15,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-09-18 10:16:15,773 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-09-18 10:16:15,773 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182
[2018-09-18 10:16:15,774 INFO L87 Difference]: Start difference. First operand 2150 states and 3572 transitions. Second operand 8 states.
[2018-09-18 10:16:19,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:16:19,544 INFO L93 Difference]: Finished difference Result 7906 states and 14277 transitions.
[2018-09-18 10:16:19,549 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2018-09-18 10:16:19,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 228
[2018-09-18 10:16:19,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:16:19,594 INFO L225 Difference]: With dead ends: 7906
[2018-09-18 10:16:19,594 INFO L226 Difference]: Without dead ends: 5762
[2018-09-18 10:16:19,611 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 924 GetRequests, 904 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342
[2018-09-18 10:16:19,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5762 states.
[2018-09-18 10:16:19,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5762 to 5660.
[2018-09-18 10:16:19,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5660 states.
[2018-09-18 10:16:19,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5660 states to 5660 states and 8666 transitions.
[2018-09-18 10:16:19,862 INFO L78 Accepts]: Start accepts. Automaton has 5660 states and 8666 transitions. Word has length 228
[2018-09-18 10:16:19,863 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:16:19,863 INFO L480 AbstractCegarLoop]: Abstraction has 5660 states and 8666 transitions.
[2018-09-18 10:16:19,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-09-18 10:16:19,863 INFO L276 IsEmpty]: Start isEmpty. Operand 5660 states and 8666 transitions.
[2018-09-18 10:16:19,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254
[2018-09-18 10:16:19,890 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:16:19,890 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:16:19,891 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:16:19,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1459994688, now seen corresponding path program 1 times
[2018-09-18 10:16:19,891 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:16:19,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:19,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:19,893 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:19,893 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:16:19,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 52 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2018-09-18 10:16:20,241 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:16:20,242 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:16:20,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:20,250 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:16:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:20,468 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:16:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2018-09-18 10:16:20,830 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:16:21,007 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2018-09-18 10:16:21,028 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:16:21,029 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu
Starting monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000
[2018-09-18 10:16:21,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:21,047 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:16:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:21,498 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:16:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2018-09-18 10:16:22,186 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:16:22,517 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked.
[2018-09-18 10:16:22,526 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-18 10:16:22,527 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 17
[2018-09-18 10:16:22,527 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-18 10:16:22,528 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-09-18 10:16:22,528 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-09-18 10:16:22,528 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272
[2018-09-18 10:16:22,529 INFO L87 Difference]: Start difference. First operand 5660 states and 8666 transitions. Second operand 9 states.
[2018-09-18 10:16:25,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:16:25,432 INFO L93 Difference]: Finished difference Result 16388 states and 25740 transitions.
[2018-09-18 10:16:25,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2018-09-18 10:16:25,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 253
[2018-09-18 10:16:25,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:16:25,496 INFO L225 Difference]: With dead ends: 16388
[2018-09-18 10:16:25,496 INFO L226 Difference]: Without dead ends: 10734
[2018-09-18 10:16:25,535 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1028 GetRequests, 1005 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552
[2018-09-18 10:16:25,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10734 states.
[2018-09-18 10:16:25,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10734 to 10013.
[2018-09-18 10:16:25,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10013 states.
[2018-09-18 10:16:25,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10013 states to 10013 states and 14172 transitions.
[2018-09-18 10:16:25,865 INFO L78 Accepts]: Start accepts. Automaton has 10013 states and 14172 transitions. Word has length 253
[2018-09-18 10:16:25,866 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:16:25,866 INFO L480 AbstractCegarLoop]: Abstraction has 10013 states and 14172 transitions.
[2018-09-18 10:16:25,866 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-09-18 10:16:25,866 INFO L276 IsEmpty]: Start isEmpty. Operand 10013 states and 14172 transitions.
[2018-09-18 10:16:25,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273
[2018-09-18 10:16:25,901 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:16:25,901 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:16:25,902 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:16:25,902 INFO L82 PathProgramCache]: Analyzing trace with hash 665990590, now seen corresponding path program 1 times
[2018-09-18 10:16:25,902 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:16:25,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:25,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:25,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:25,904 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:16:25,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:26,717 WARN L178 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 12
[2018-09-18 10:16:27,183 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 27
[2018-09-18 10:16:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 0 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:27,369 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:16:27,369 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:16:27,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:27,388 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:16:27,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:27,564 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:16:27,915 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:27,916 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:16:28,064 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 18
[2018-09-18 10:16:28,559 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:28,581 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences.
[2018-09-18 10:16:28,581 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [10] total 15
[2018-09-18 10:16:28,581 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-18 10:16:28,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-09-18 10:16:28,582 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-09-18 10:16:28,582 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210
[2018-09-18 10:16:28,582 INFO L87 Difference]: Start difference. First operand 10013 states and 14172 transitions. Second operand 5 states.
[2018-09-18 10:16:28,819 WARN L178 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 16
[2018-09-18 10:16:31,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:16:31,458 INFO L93 Difference]: Finished difference Result 24896 states and 35432 transitions.
[2018-09-18 10:16:31,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2018-09-18 10:16:31,461 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272
[2018-09-18 10:16:31,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:16:31,517 INFO L225 Difference]: With dead ends: 24896
[2018-09-18 10:16:31,517 INFO L226 Difference]: Without dead ends: 14889
[2018-09-18 10:16:31,565 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 559 GetRequests, 541 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306
[2018-09-18 10:16:31,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14889 states.
[2018-09-18 10:16:31,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14889 to 14527.
[2018-09-18 10:16:31,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14527 states.
[2018-09-18 10:16:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14527 states to 14527 states and 19518 transitions.
[2018-09-18 10:16:31,945 INFO L78 Accepts]: Start accepts. Automaton has 14527 states and 19518 transitions. Word has length 272
[2018-09-18 10:16:31,945 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:16:31,945 INFO L480 AbstractCegarLoop]: Abstraction has 14527 states and 19518 transitions.
[2018-09-18 10:16:31,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-09-18 10:16:31,946 INFO L276 IsEmpty]: Start isEmpty. Operand 14527 states and 19518 transitions.
[2018-09-18 10:16:31,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285
[2018-09-18 10:16:31,991 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:16:31,991 INFO L376 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:16:31,991 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:16:31,992 INFO L82 PathProgramCache]: Analyzing trace with hash -1493397055, now seen corresponding path program 1 times
[2018-09-18 10:16:31,992 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:16:31,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:31,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:31,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:31,993 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:16:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:32,659 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 14
[2018-09-18 10:16:32,922 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:32,923 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:16:32,923 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:16:32,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:32,932 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:16:33,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:33,112 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:16:33,306 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 84 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:33,306 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:16:33,687 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 79 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:33,710 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:16:33,711 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu
Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000
[2018-09-18 10:16:33,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:33,729 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:16:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:34,175 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:16:34,590 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:34,590 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:16:35,049 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 79 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:35,051 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-18 10:16:35,052 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8, 8, 8] total 30
[2018-09-18 10:16:35,052 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-18 10:16:35,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states
[2018-09-18 10:16:35,053 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2018-09-18 10:16:35,054 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=706, Unknown=0, NotChecked=0, Total=870
[2018-09-18 10:16:35,054 INFO L87 Difference]: Start difference. First operand 14527 states and 19518 transitions. Second operand 12 states.
[2018-09-18 10:16:46,056 WARN L178 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 27
[2018-09-18 10:16:46,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:16:46,908 INFO L93 Difference]: Finished difference Result 68254 states and 94685 transitions.
[2018-09-18 10:16:46,908 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states.
[2018-09-18 10:16:46,908 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 284
[2018-09-18 10:16:46,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:16:47,165 INFO L225 Difference]: With dead ends: 68254
[2018-09-18 10:16:47,166 INFO L226 Difference]: Without dead ends: 53733
[2018-09-18 10:16:47,241 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1220 GetRequests, 1126 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2979 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1487, Invalid=7633, Unknown=0, NotChecked=0, Total=9120
[2018-09-18 10:16:47,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53733 states.
[2018-09-18 10:16:48,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53733 to 52270.
[2018-09-18 10:16:48,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52270 states.
[2018-09-18 10:16:49,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52270 states to 52270 states and 67977 transitions.
[2018-09-18 10:16:49,015 INFO L78 Accepts]: Start accepts. Automaton has 52270 states and 67977 transitions. Word has length 284
[2018-09-18 10:16:49,015 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:16:49,015 INFO L480 AbstractCegarLoop]: Abstraction has 52270 states and 67977 transitions.
[2018-09-18 10:16:49,015 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2018-09-18 10:16:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 52270 states and 67977 transitions.
[2018-09-18 10:16:49,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284
[2018-09-18 10:16:49,104 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:16:49,104 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:16:49,105 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:16:49,105 INFO L82 PathProgramCache]: Analyzing trace with hash -595670805, now seen corresponding path program 1 times
[2018-09-18 10:16:49,105 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:16:49,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:49,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:49,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:49,108 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:16:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:49,521 WARN L178 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4
[2018-09-18 10:16:50,266 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:50,266 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:16:50,266 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:16:50,280 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:50,281 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:16:50,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:50,450 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:16:50,652 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:50,652 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:16:50,817 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:16:50,839 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences.
[2018-09-18 10:16:50,839 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8
[2018-09-18 10:16:50,839 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-18 10:16:50,840 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-09-18 10:16:50,841 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-09-18 10:16:50,841 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2018-09-18 10:16:50,841 INFO L87 Difference]: Start difference. First operand 52270 states and 67977 transitions. Second operand 3 states.
[2018-09-18 10:16:52,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:16:52,784 INFO L93 Difference]: Finished difference Result 128351 states and 170474 transitions.
[2018-09-18 10:16:52,784 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2018-09-18 10:16:52,785 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 283
[2018-09-18 10:16:52,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:16:53,056 INFO L225 Difference]: With dead ends: 128351
[2018-09-18 10:16:53,056 INFO L226 Difference]: Without dead ends: 76087
[2018-09-18 10:16:53,178 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 575 GetRequests, 565 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56
[2018-09-18 10:16:53,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76087 states.
[2018-09-18 10:16:54,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76087 to 74759.
[2018-09-18 10:16:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74759 states.
[2018-09-18 10:16:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74759 states to 74759 states and 97675 transitions.
[2018-09-18 10:16:55,095 INFO L78 Accepts]: Start accepts. Automaton has 74759 states and 97675 transitions. Word has length 283
[2018-09-18 10:16:55,095 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:16:55,095 INFO L480 AbstractCegarLoop]: Abstraction has 74759 states and 97675 transitions.
[2018-09-18 10:16:55,095 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-09-18 10:16:55,096 INFO L276 IsEmpty]: Start isEmpty. Operand 74759 states and 97675 transitions.
[2018-09-18 10:16:55,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316
[2018-09-18 10:16:55,157 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:16:55,158 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:16:55,158 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:16:55,158 INFO L82 PathProgramCache]: Analyzing trace with hash -128437811, now seen corresponding path program 1 times
[2018-09-18 10:16:55,159 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:16:55,159 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:55,159 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:55,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:16:55,160 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:16:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:55,782 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 123 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2018-09-18 10:16:55,782 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:16:55,782 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:16:55,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:55,796 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:16:56,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:56,018 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:16:56,241 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2018-09-18 10:16:56,241 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:16:56,398 WARN L178 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23
[2018-09-18 10:16:56,544 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 123 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2018-09-18 10:16:56,567 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:16:56,567 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu
Starting monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000
[2018-09-18 10:16:56,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:16:56,583 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:16:57,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:16:57,108 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:16:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2018-09-18 10:16:57,272 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:16:58,175 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 123 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2018-09-18 10:16:58,178 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-18 10:16:58,179 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 20
[2018-09-18 10:16:58,179 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-18 10:16:58,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-09-18 10:16:58,181 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-09-18 10:16:58,186 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380
[2018-09-18 10:16:58,187 INFO L87 Difference]: Start difference. First operand 74759 states and 97675 transitions. Second operand 10 states.
[2018-09-18 10:17:08,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:17:08,921 INFO L93 Difference]: Finished difference Result 171852 states and 249376 transitions.
[2018-09-18 10:17:08,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2018-09-18 10:17:08,922 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 315
[2018-09-18 10:17:08,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:17:09,474 INFO L225 Difference]: With dead ends: 171852
[2018-09-18 10:17:09,475 INFO L226 Difference]: Without dead ends: 97093
[2018-09-18 10:17:09,638 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1353 GetRequests, 1289 SyntacticMatches, 1 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1167 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=753, Invalid=3407, Unknown=0, NotChecked=0, Total=4160
[2018-09-18 10:17:09,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97093 states.
[2018-09-18 10:17:11,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97093 to 87630.
[2018-09-18 10:17:11,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87630 states.
[2018-09-18 10:17:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87630 states to 87630 states and 109623 transitions.
[2018-09-18 10:17:11,654 INFO L78 Accepts]: Start accepts. Automaton has 87630 states and 109623 transitions. Word has length 315
[2018-09-18 10:17:11,654 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:17:11,655 INFO L480 AbstractCegarLoop]: Abstraction has 87630 states and 109623 transitions.
[2018-09-18 10:17:11,655 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-09-18 10:17:11,655 INFO L276 IsEmpty]: Start isEmpty. Operand 87630 states and 109623 transitions.
[2018-09-18 10:17:11,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317
[2018-09-18 10:17:11,724 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:17:11,725 INFO L376 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:17:11,725 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:17:11,725 INFO L82 PathProgramCache]: Analyzing trace with hash -2079012350, now seen corresponding path program 1 times
[2018-09-18 10:17:11,726 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:17:11,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:17:11,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:17:11,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:17:11,727 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:17:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:17:12,269 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:17:12,269 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:17:12,269 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:17:12,284 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:17:12,284 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:17:12,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:17:12,497 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:17:12,601 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2018-09-18 10:17:12,601 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:17:12,786 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked.
[2018-09-18 10:17:12,807 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences.
[2018-09-18 10:17:12,808 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 6
[2018-09-18 10:17:12,808 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-18 10:17:12,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-09-18 10:17:12,809 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-09-18 10:17:12,809 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2018-09-18 10:17:12,809 INFO L87 Difference]: Start difference. First operand 87630 states and 109623 transitions. Second operand 3 states.
[2018-09-18 10:17:16,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:17:16,126 INFO L93 Difference]: Finished difference Result 236442 states and 297293 transitions.
[2018-09-18 10:17:16,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2018-09-18 10:17:16,126 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 316
[2018-09-18 10:17:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:17:16,596 INFO L225 Difference]: With dead ends: 236442
[2018-09-18 10:17:16,596 INFO L226 Difference]: Without dead ends: 148823
[2018-09-18 10:17:16,790 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 630 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30
[2018-09-18 10:17:16,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148823 states.
[2018-09-18 10:17:18,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148823 to 143888.
[2018-09-18 10:17:18,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143888 states.
[2018-09-18 10:17:20,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143888 states to 143888 states and 177103 transitions.
[2018-09-18 10:17:20,331 INFO L78 Accepts]: Start accepts. Automaton has 143888 states and 177103 transitions. Word has length 316
[2018-09-18 10:17:20,331 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:17:20,331 INFO L480 AbstractCegarLoop]: Abstraction has 143888 states and 177103 transitions.
[2018-09-18 10:17:20,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-09-18 10:17:20,331 INFO L276 IsEmpty]: Start isEmpty. Operand 143888 states and 177103 transitions.
[2018-09-18 10:17:20,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374
[2018-09-18 10:17:20,451 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:17:20,451 INFO L376 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:17:20,452 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:17:20,452 INFO L82 PathProgramCache]: Analyzing trace with hash 2023749092, now seen corresponding path program 1 times
[2018-09-18 10:17:20,452 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:17:20,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:17:20,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:17:20,453 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:17:20,454 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:17:20,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:17:21,161 WARN L178 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 13
[2018-09-18 10:17:21,429 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:17:21,430 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:17:21,430 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:17:21,441 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:17:21,442 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:17:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:17:21,656 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:17:21,844 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 163 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2018-09-18 10:17:21,844 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:17:22,011 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2018-09-18 10:17:22,033 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:17:22,033 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu
Starting monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000
[2018-09-18 10:17:22,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:17:22,049 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:17:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:17:22,569 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:17:22,698 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 163 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2018-09-18 10:17:22,698 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:17:22,876 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 224 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2018-09-18 10:17:22,879 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-18 10:17:22,880 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4, 4, 4] total 13
[2018-09-18 10:17:22,880 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-18 10:17:22,881 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-09-18 10:17:22,881 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-09-18 10:17:22,881 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156
[2018-09-18 10:17:22,882 INFO L87 Difference]: Start difference. First operand 143888 states and 177103 transitions. Second operand 8 states.
[2018-09-18 10:17:32,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:17:32,137 INFO L93 Difference]: Finished difference Result 308336 states and 399770 transitions.
[2018-09-18 10:17:32,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2018-09-18 10:17:32,138 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 373
[2018-09-18 10:17:32,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:17:32,780 INFO L225 Difference]: With dead ends: 308336
[2018-09-18 10:17:32,780 INFO L226 Difference]: Without dead ends: 164494
[2018-09-18 10:17:33,052 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1538 GetRequests, 1500 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=303, Invalid=1029, Unknown=0, NotChecked=0, Total=1332
[2018-09-18 10:17:33,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164494 states.
[2018-09-18 10:17:36,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164494 to 152226.
[2018-09-18 10:17:36,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152226 states.
[2018-09-18 10:17:42,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152226 states to 152226 states and 182708 transitions.
[2018-09-18 10:17:42,818 INFO L78 Accepts]: Start accepts. Automaton has 152226 states and 182708 transitions. Word has length 373
[2018-09-18 10:17:42,819 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:17:42,819 INFO L480 AbstractCegarLoop]: Abstraction has 152226 states and 182708 transitions.
[2018-09-18 10:17:42,819 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-09-18 10:17:42,819 INFO L276 IsEmpty]: Start isEmpty. Operand 152226 states and 182708 transitions.
[2018-09-18 10:17:42,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384
[2018-09-18 10:17:42,942 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:17:42,943 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1]
[2018-09-18 10:17:42,943 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:17:42,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1311332543, now seen corresponding path program 1 times
[2018-09-18 10:17:42,943 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:17:42,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:17:42,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:17:42,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:17:42,944 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:17:43,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:17:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 204 proven. 30 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2018-09-18 10:17:43,385 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:17:43,385 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:17:43,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:17:43,393 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:17:43,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:17:43,642 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:17:43,838 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 206 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked.
[2018-09-18 10:17:43,838 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:17:44,032 INFO L134 CoverageAnalysis]: Checked inductivity of 279 backedges. 178 proven. 68 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked.
[2018-09-18 10:17:44,053 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences.
[2018-09-18 10:17:44,053 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 11
[2018-09-18 10:17:44,053 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-18 10:17:44,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-09-18 10:17:44,054 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-09-18 10:17:44,054 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110
[2018-09-18 10:17:44,055 INFO L87 Difference]: Start difference. First operand 152226 states and 182708 transitions. Second operand 5 states.
[2018-09-18 10:17:48,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:17:48,598 INFO L93 Difference]: Finished difference Result 366931 states and 439753 transitions.
[2018-09-18 10:17:48,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2018-09-18 10:17:48,599 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 383
[2018-09-18 10:17:48,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:17:49,165 INFO L225 Difference]: With dead ends: 366931
[2018-09-18 10:17:49,166 INFO L226 Difference]: Without dead ends: 214756
[2018-09-18 10:17:49,304 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 772 GetRequests, 758 SyntacticMatches, 4 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132
[2018-09-18 10:17:49,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214756 states.
[2018-09-18 10:17:52,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214756 to 203656.
[2018-09-18 10:17:52,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203656 states.
[2018-09-18 10:17:53,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203656 states to 203656 states and 242682 transitions.
[2018-09-18 10:17:53,197 INFO L78 Accepts]: Start accepts. Automaton has 203656 states and 242682 transitions. Word has length 383
[2018-09-18 10:17:53,197 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:17:53,197 INFO L480 AbstractCegarLoop]: Abstraction has 203656 states and 242682 transitions.
[2018-09-18 10:17:53,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-09-18 10:17:53,197 INFO L276 IsEmpty]: Start isEmpty. Operand 203656 states and 242682 transitions.
[2018-09-18 10:17:53,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385
[2018-09-18 10:17:53,371 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:17:53,371 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1]
[2018-09-18 10:17:53,371 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:17:53,371 INFO L82 PathProgramCache]: Analyzing trace with hash -499605935, now seen corresponding path program 1 times
[2018-09-18 10:17:53,372 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:17:53,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:17:53,373 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:17:53,373 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:17:53,373 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:17:53,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:17:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 206 proven. 31 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2018-09-18 10:17:53,819 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:17:53,819 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:17:53,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:17:53,827 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:17:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:17:54,075 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:17:54,194 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2018-09-18 10:17:54,194 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:17:54,321 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 206 proven. 31 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2018-09-18 10:17:54,343 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:17:54,344 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu
Starting monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000
[2018-09-18 10:17:54,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:17:54,362 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:17:54,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:17:54,957 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:17:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 235 proven. 2 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2018-09-18 10:17:55,764 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:17:55,924 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 206 proven. 31 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked.
[2018-09-18 10:17:55,927 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-18 10:17:55,927 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 14
[2018-09-18 10:17:55,928 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-18 10:17:55,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-09-18 10:17:55,930 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-09-18 10:17:55,930 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182
[2018-09-18 10:17:55,930 INFO L87 Difference]: Start difference. First operand 203656 states and 242682 transitions. Second operand 6 states.
[2018-09-18 10:18:01,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:18:01,255 INFO L93 Difference]: Finished difference Result 373719 states and 460252 transitions.
[2018-09-18 10:18:01,256 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2018-09-18 10:18:01,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 384
[2018-09-18 10:18:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:18:02,751 INFO L225 Difference]: With dead ends: 373719
[2018-09-18 10:18:02,751 INFO L226 Difference]: Without dead ends: 170238
[2018-09-18 10:18:02,975 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1546 GetRequests, 1529 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272
[2018-09-18 10:18:03,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170238 states.
[2018-09-18 10:18:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170238 to 160482.
[2018-09-18 10:18:06,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160482 states.
[2018-09-18 10:18:06,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160482 states to 160482 states and 184609 transitions.
[2018-09-18 10:18:06,923 INFO L78 Accepts]: Start accepts. Automaton has 160482 states and 184609 transitions. Word has length 384
[2018-09-18 10:18:06,923 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:18:06,924 INFO L480 AbstractCegarLoop]: Abstraction has 160482 states and 184609 transitions.
[2018-09-18 10:18:06,924 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-09-18 10:18:06,924 INFO L276 IsEmpty]: Start isEmpty. Operand 160482 states and 184609 transitions.
[2018-09-18 10:18:07,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 408
[2018-09-18 10:18:07,072 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:18:07,073 INFO L376 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, 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, 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, 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]
[2018-09-18 10:18:07,073 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:18:07,073 INFO L82 PathProgramCache]: Analyzing trace with hash 876396658, now seen corresponding path program 1 times
[2018-09-18 10:18:07,073 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:18:07,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:18:07,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:18:07,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:18:07,075 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:18:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:18:07,649 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 263 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:18:07,649 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:18:07,649 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:18:07,659 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:18:07,659 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:18:07,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:18:07,888 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:18:08,163 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked.
[2018-09-18 10:18:08,164 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:18:08,723 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 197 proven. 63 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked.
[2018-09-18 10:18:08,746 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences.
[2018-09-18 10:18:08,746 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 12
[2018-09-18 10:18:08,746 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-18 10:18:08,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-09-18 10:18:08,747 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-09-18 10:18:08,747 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132
[2018-09-18 10:18:08,747 INFO L87 Difference]: Start difference. First operand 160482 states and 184609 transitions. Second operand 5 states.
[2018-09-18 10:18:13,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:18:13,181 INFO L93 Difference]: Finished difference Result 376456 states and 431310 transitions.
[2018-09-18 10:18:13,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2018-09-18 10:18:13,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 407
[2018-09-18 10:18:13,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:18:13,742 INFO L225 Difference]: With dead ends: 376456
[2018-09-18 10:18:13,742 INFO L226 Difference]: Without dead ends: 217646
[2018-09-18 10:18:13,945 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 821 GetRequests, 809 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182
[2018-09-18 10:18:14,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217646 states.
[2018-09-18 10:18:17,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217646 to 212508.
[2018-09-18 10:18:17,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212508 states.
[2018-09-18 10:18:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212508 states to 212508 states and 242059 transitions.
[2018-09-18 10:18:17,962 INFO L78 Accepts]: Start accepts. Automaton has 212508 states and 242059 transitions. Word has length 407
[2018-09-18 10:18:17,963 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:18:17,963 INFO L480 AbstractCegarLoop]: Abstraction has 212508 states and 242059 transitions.
[2018-09-18 10:18:17,963 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-09-18 10:18:17,963 INFO L276 IsEmpty]: Start isEmpty. Operand 212508 states and 242059 transitions.
[2018-09-18 10:18:18,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413
[2018-09-18 10:18:18,115 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:18:18,115 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:18:18,115 INFO L423 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:18:18,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1852815756, now seen corresponding path program 1 times
[2018-09-18 10:18:18,116 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:18:18,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:18:18,116 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:18:18,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:18:18,117 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:18:18,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:18:18,342 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 207 proven. 4 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked.
[2018-09-18 10:18:18,343 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:18:18,343 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:18:18,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:18:18,352 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:18:18,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:18:18,619 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:18:18,711 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 215 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked.
[2018-09-18 10:18:18,712 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:18:19,797 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 207 proven. 4 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked.
[2018-09-18 10:18:19,820 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences.
[2018-09-18 10:18:19,820 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 4] total 4
[2018-09-18 10:18:19,820 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence
[2018-09-18 10:18:19,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-09-18 10:18:19,821 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-09-18 10:18:19,821 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2018-09-18 10:18:19,821 INFO L87 Difference]: Start difference. First operand 212508 states and 242059 transitions. Second operand 3 states.
[2018-09-18 10:18:22,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:18:22,483 INFO L93 Difference]: Finished difference Result 401588 states and 456929 transitions.
[2018-09-18 10:18:22,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2018-09-18 10:18:22,483 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 412
[2018-09-18 10:18:22,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:18:23,084 INFO L225 Difference]: With dead ends: 401588
[2018-09-18 10:18:23,084 INFO L226 Difference]: Without dead ends: 210812
[2018-09-18 10:18:23,300 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 827 GetRequests, 825 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12
[2018-09-18 10:18:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210812 states.
[2018-09-18 10:18:27,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210812 to 210798.
[2018-09-18 10:18:27,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210798 states.
[2018-09-18 10:18:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210798 states to 210798 states and 240065 transitions.
[2018-09-18 10:18:27,592 INFO L78 Accepts]: Start accepts. Automaton has 210798 states and 240065 transitions. Word has length 412
[2018-09-18 10:18:27,592 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:18:27,592 INFO L480 AbstractCegarLoop]: Abstraction has 210798 states and 240065 transitions.
[2018-09-18 10:18:27,592 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-09-18 10:18:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 210798 states and 240065 transitions.
[2018-09-18 10:18:27,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423
[2018-09-18 10:18:27,728 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:18:27,728 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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]
[2018-09-18 10:18:27,729 INFO L423 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:18:27,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1560998664, now seen corresponding path program 1 times
[2018-09-18 10:18:27,729 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:18:27,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:18:27,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:18:27,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:18:27,730 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:18:27,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:18:28,609 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 258 proven. 30 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked.
[2018-09-18 10:18:28,610 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:18:28,610 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:18:28,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:18:28,618 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:18:28,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:18:28,895 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:18:28,975 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked.
[2018-09-18 10:18:28,975 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:18:29,103 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 258 proven. 30 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked.
[2018-09-18 10:18:29,126 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:18:29,126 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu
Starting monitored process 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000
[2018-09-18 10:18:29,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:18:29,143 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:18:29,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:18:29,801 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:18:29,951 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 293 proven. 2 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked.
[2018-09-18 10:18:29,951 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:18:30,126 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 258 proven. 30 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked.
[2018-09-18 10:18:30,129 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-18 10:18:30,130 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 15
[2018-09-18 10:18:30,130 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-18 10:18:30,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-09-18 10:18:30,131 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-09-18 10:18:30,131 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210
[2018-09-18 10:18:30,131 INFO L87 Difference]: Start difference. First operand 210798 states and 240065 transitions. Second operand 7 states.
[2018-09-18 10:18:38,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:18:38,446 INFO L93 Difference]: Finished difference Result 387067 states and 448797 transitions.
[2018-09-18 10:18:38,446 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2018-09-18 10:18:38,446 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 422
[2018-09-18 10:18:38,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:18:38,935 INFO L225 Difference]: With dead ends: 387067
[2018-09-18 10:18:38,936 INFO L226 Difference]: Without dead ends: 178972
[2018-09-18 10:18:39,172 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1696 GetRequests, 1679 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272
[2018-09-18 10:18:39,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178972 states.
[2018-09-18 10:18:42,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178972 to 170609.
[2018-09-18 10:18:42,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170609 states.
[2018-09-18 10:18:42,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170609 states to 170609 states and 189658 transitions.
[2018-09-18 10:18:42,470 INFO L78 Accepts]: Start accepts. Automaton has 170609 states and 189658 transitions. Word has length 422
[2018-09-18 10:18:42,470 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:18:42,470 INFO L480 AbstractCegarLoop]: Abstraction has 170609 states and 189658 transitions.
[2018-09-18 10:18:42,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-09-18 10:18:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 170609 states and 189658 transitions.
[2018-09-18 10:18:42,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 431
[2018-09-18 10:18:42,574 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:18:42,575 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:18:42,575 INFO L423 AbstractCegarLoop]: === Iteration 17 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:18:42,575 INFO L82 PathProgramCache]: Analyzing trace with hash -926211969, now seen corresponding path program 1 times
[2018-09-18 10:18:42,575 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:18:42,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:18:42,576 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:18:42,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:18:42,576 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:18:42,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:18:42,981 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 229 proven. 14 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked.
[2018-09-18 10:18:42,981 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:18:42,981 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:18:42,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:18:42,991 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:18:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:18:43,267 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:18:43,628 WARN L178 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 10
[2018-09-18 10:18:44,522 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 241 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked.
[2018-09-18 10:18:44,522 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:18:44,824 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 229 proven. 14 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked.
[2018-09-18 10:18:44,848 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:18:44,848 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu
Starting monitored process 24 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 24 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000
[2018-09-18 10:18:44,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:18:44,867 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:18:45,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:18:45,566 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:18:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 376 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked.
[2018-09-18 10:18:45,822 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:18:45,951 WARN L178 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 15
[2018-09-18 10:18:46,606 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 239 proven. 153 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked.
[2018-09-18 10:18:46,609 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-18 10:18:46,609 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 10, 11] total 25
[2018-09-18 10:18:46,609 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-18 10:18:46,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-09-18 10:18:46,611 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-09-18 10:18:46,611 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=490, Unknown=0, NotChecked=0, Total=600
[2018-09-18 10:18:46,612 INFO L87 Difference]: Start difference. First operand 170609 states and 189658 transitions. Second operand 6 states.
[2018-09-18 10:18:53,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:18:53,691 INFO L93 Difference]: Finished difference Result 342650 states and 403627 transitions.
[2018-09-18 10:18:53,691 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2018-09-18 10:18:53,691 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 430
[2018-09-18 10:18:53,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:18:54,380 INFO L225 Difference]: With dead ends: 342650
[2018-09-18 10:18:54,380 INFO L226 Difference]: Without dead ends: 191410
[2018-09-18 10:18:54,599 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1733 GetRequests, 1704 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870
[2018-09-18 10:18:54,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191410 states.
[2018-09-18 10:18:59,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191410 to 175649.
[2018-09-18 10:18:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175649 states.
[2018-09-18 10:18:59,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175649 states to 175649 states and 194781 transitions.
[2018-09-18 10:18:59,476 INFO L78 Accepts]: Start accepts. Automaton has 175649 states and 194781 transitions. Word has length 430
[2018-09-18 10:18:59,476 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:18:59,476 INFO L480 AbstractCegarLoop]: Abstraction has 175649 states and 194781 transitions.
[2018-09-18 10:18:59,476 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-09-18 10:18:59,477 INFO L276 IsEmpty]: Start isEmpty. Operand 175649 states and 194781 transitions.
[2018-09-18 10:18:59,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440
[2018-09-18 10:18:59,605 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:18:59,606 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:18:59,606 INFO L423 AbstractCegarLoop]: === Iteration 18 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:18:59,606 INFO L82 PathProgramCache]: Analyzing trace with hash 457484241, now seen corresponding path program 1 times
[2018-09-18 10:18:59,606 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:18:59,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:18:59,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:18:59,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:18:59,607 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:18:59,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:19:00,100 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 380 proven. 42 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked.
[2018-09-18 10:19:00,100 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:19:00,100 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:19:00,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:19:00,109 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:19:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:19:00,391 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:19:00,482 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 382 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked.
[2018-09-18 10:19:00,482 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:19:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 382 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked.
[2018-09-18 10:19:00,685 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:19:00,685 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu
Starting monitored process 26 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 26 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000
[2018-09-18 10:19:00,702 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:19:00,702 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:19:01,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:19:01,418 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:19:01,548 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 338 proven. 67 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked.
[2018-09-18 10:19:01,548 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:19:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 382 proven. 4 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked.
[2018-09-18 10:19:02,285 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-18 10:19:02,286 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 6, 5] total 9
[2018-09-18 10:19:02,286 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-18 10:19:02,288 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-09-18 10:19:02,288 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-09-18 10:19:02,288 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72
[2018-09-18 10:19:02,288 INFO L87 Difference]: Start difference. First operand 175649 states and 194781 transitions. Second operand 7 states.
[2018-09-18 10:19:07,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:19:07,835 INFO L93 Difference]: Finished difference Result 398701 states and 454801 transitions.
[2018-09-18 10:19:07,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2018-09-18 10:19:07,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 439
[2018-09-18 10:19:07,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:19:08,524 INFO L225 Difference]: With dead ends: 398701
[2018-09-18 10:19:08,524 INFO L226 Difference]: Without dead ends: 253236
[2018-09-18 10:19:08,666 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1766 GetRequests, 1746 SyntacticMatches, 11 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110
[2018-09-18 10:19:08,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253236 states.
[2018-09-18 10:19:13,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253236 to 249271.
[2018-09-18 10:19:13,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249271 states.
[2018-09-18 10:19:14,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249271 states to 249271 states and 278964 transitions.
[2018-09-18 10:19:14,084 INFO L78 Accepts]: Start accepts. Automaton has 249271 states and 278964 transitions. Word has length 439
[2018-09-18 10:19:14,085 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-18 10:19:14,085 INFO L480 AbstractCegarLoop]: Abstraction has 249271 states and 278964 transitions.
[2018-09-18 10:19:14,085 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-09-18 10:19:14,085 INFO L276 IsEmpty]: Start isEmpty. Operand 249271 states and 278964 transitions.
[2018-09-18 10:19:14,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 449
[2018-09-18 10:19:14,297 INFO L368 BasicCegarLoop]: Found error trace
[2018-09-18 10:19:14,298 INFO L376 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2018-09-18 10:19:14,298 INFO L423 AbstractCegarLoop]: === Iteration 19 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2018-09-18 10:19:14,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1348690835, now seen corresponding path program 1 times
[2018-09-18 10:19:14,298 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy
[2018-09-18 10:19:14,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:19:14,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:19:14,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-18 10:19:14,299 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation)
[2018-09-18 10:19:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:19:14,805 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 313 proven. 93 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked.
[2018-09-18 10:19:14,806 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:19:14,806 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-18 10:19:14,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:19:14,814 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:19:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:19:15,881 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:19:16,047 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 407 proven. 6 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked.
[2018-09-18 10:19:16,047 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:19:16,364 WARN L178 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 41
[2018-09-18 10:19:16,813 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 313 proven. 100 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked.
[2018-09-18 10:19:16,834 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-18 10:19:16,835 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu
Starting monitored process 28 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 28 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000
[2018-09-18 10:19:16,852 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-18 10:19:16,852 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP)
[2018-09-18 10:19:17,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-18 10:19:17,553 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-18 10:19:17,990 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 463 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2018-09-18 10:19:17,991 INFO L316 TraceCheckSpWp]: Computing backward predicates...
[2018-09-18 10:19:18,724 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 384 proven. 95 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-18 10:19:18,727 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences.
[2018-09-18 10:19:18,728 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8, 11, 11] total 32
[2018-09-18 10:19:18,729 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences
[2018-09-18 10:19:18,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-09-18 10:19:18,730 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-09-18 10:19:18,730 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=849, Unknown=0, NotChecked=0, Total=992
[2018-09-18 10:19:18,731 INFO L87 Difference]: Start difference. First operand 249271 states and 278964 transitions. Second operand 10 states.
[2018-09-18 10:19:28,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-18 10:19:28,044 INFO L93 Difference]: Finished difference Result 451047 states and 517488 transitions.
[2018-09-18 10:19:28,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2018-09-18 10:19:28,044 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 448
[2018-09-18 10:19:28,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-18 10:19:28,804 INFO L225 Difference]: With dead ends: 451047
[2018-09-18 10:19:28,804 INFO L226 Difference]: Without dead ends: 251310
[2018-09-18 10:19:29,027 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1812 GetRequests, 1772 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=222, Invalid=1260, Unknown=0, NotChecked=0, Total=1482
[2018-09-18 10:19:29,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251310 states.
Received shutdown request...
[2018-09-18 10:19:30,048 WARN L549 AbstractCegarLoop]: Verification canceled
[2018-09-18 10:19:30,053 WARN L206 ceAbstractionStarter]: Timeout
[2018-09-18 10:19:30,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:19:30 BoogieIcfgContainer
[2018-09-18 10:19:30,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-09-18 10:19:30,055 INFO L168 Benchmark]: Toolchain (without parser) took 216191.89 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 938.3 MB in the end (delta: 473.0 MB). Peak memory consumption was 4.0 GB. Max. memory is 7.1 GB.
[2018-09-18 10:19:30,056 INFO L168 Benchmark]: CDTParser took 0.21 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.
[2018-09-18 10:19:30,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1121.36 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB.
[2018-09-18 10:19:30,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 155.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB.
[2018-09-18 10:19:30,057 INFO L168 Benchmark]: Boogie Preprocessor took 406.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -939.2 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB.
[2018-09-18 10:19:30,058 INFO L168 Benchmark]: RCFGBuilder took 5725.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 257.6 MB). Peak memory consumption was 257.6 MB. Max. memory is 7.1 GB.
[2018-09-18 10:19:30,059 INFO L168 Benchmark]: TraceAbstraction took 208773.26 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 938.3 MB in the end (delta: 1.0 GB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB.
[2018-09-18 10:19:30,063 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
* CACSL2BoogieTranslator took 1121.36 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: 95.1 MB). Peak memory consumption was 95.1 MB. Max. memory is 7.1 GB.
* Boogie Procedure Inliner took 155.53 ms. Allocated memory is still 1.5 GB. Free memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB.
* Boogie Preprocessor took 406.41 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.7 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -939.2 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB.
* RCFGBuilder took 5725.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 257.6 MB). Peak memory consumption was 257.6 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 208773.26 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.5 GB). Free memory was 2.0 GB in the beginning and 938.3 MB in the end (delta: 1.0 GB). Peak memory consumption was 3.8 GB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- TimeoutResultAtElement [Line: 1626]: Timeout (TraceAbstraction)
Unable to prove that call of __VERIFIER_error() unreachable (line 1626). Cancelled while executing MinimizeSevpa.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 208.6s OverallTime, 19 OverallIterations, 5 TraceHistogramMax, 113.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4354 SDtfs, 27895 SDslu, 6424 SDs, 0 SdLazy, 38919 SolverSat, 7427 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 51.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 19280 GetRequests, 18833 SyntacticMatches, 44 SemanticMatches, 403 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5437 ImplicationChecksByTransitivity, 16.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249271occurred in iteration=18, 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: 50.9s AutomataMinimizationTime, 19 MinimizatonAttempts, 85028 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 1.6s SsaConstructionTime, 9.5s SatisfiabilityAnalysisTime, 27.7s InterpolantComputationTime, 15743 NumberOfCodeBlocks, 15743 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 25120 ConstructedInterpolants, 0 QuantifiedInterpolants, 25018264 SizeOfPredicates, 117 NumberOfNonLiveVariables, 35185 ConjunctsInSsa, 382 ConjunctsInUnsatCore, 73 InterpolantComputations, 12 PerfectInterpolantSequences, 14680/16026 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-19-30-075.csv
Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem03_label47_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-19-30-075.csv
Completed graceful shutdown