java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -s config/svcomp-Reach-32bit-Automizer_Default.epf --rcfgbuilder.command.for.external.solver 'z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000' -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --rcfgbuilder.size.of.a.code.block SingleStatement -i /storage/repos/svcomp/c/array-tiling/pr2_true-unreach-call.i


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


This is Ultimate 0.1.24-7aa59a0
[2019-05-23 11:26:08,310 INFO  L146                ILogger]: Resetting all preferences to default values...
[2019-05-23 11:26:08,312 INFO  L146                ILogger]: Resetting UltimateCore preferences to default values
[2019-05-23 11:26:08,324 INFO  L146                ILogger]: Ultimate Commandline Interface provides no preferences, ignoring...
[2019-05-23 11:26:08,324 INFO  L146                ILogger]: Resetting Boogie Preprocessor preferences to default values
[2019-05-23 11:26:08,325 INFO  L146                ILogger]: Resetting Boogie Procedure Inliner preferences to default values
[2019-05-23 11:26:08,326 INFO  L146                ILogger]: Resetting Abstract Interpretation preferences to default values
[2019-05-23 11:26:08,328 INFO  L146                ILogger]: Resetting LassoRanker preferences to default values
[2019-05-23 11:26:08,330 INFO  L146                ILogger]: Resetting Reaching Definitions preferences to default values
[2019-05-23 11:26:08,330 INFO  L146                ILogger]: Resetting SyntaxChecker preferences to default values
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[2019-05-23 11:26:08,332 INFO  L146                ILogger]: Resetting LTL2Aut preferences to default values
[2019-05-23 11:26:08,333 INFO  L146                ILogger]: Resetting PEA to Boogie preferences to default values
[2019-05-23 11:26:08,334 INFO  L146                ILogger]: Resetting BlockEncodingV2 preferences to default values
[2019-05-23 11:26:08,335 INFO  L146                ILogger]: Resetting ChcToBoogie preferences to default values
[2019-05-23 11:26:08,336 INFO  L146                ILogger]: Resetting AutomataScriptInterpreter preferences to default values
[2019-05-23 11:26:08,336 INFO  L146                ILogger]: Resetting BuchiAutomizer preferences to default values
[2019-05-23 11:26:08,338 INFO  L146                ILogger]: Resetting CACSL2BoogieTranslator preferences to default values
[2019-05-23 11:26:08,340 INFO  L146                ILogger]: Resetting CodeCheck preferences to default values
[2019-05-23 11:26:08,342 INFO  L146                ILogger]: Resetting InvariantSynthesis preferences to default values
[2019-05-23 11:26:08,343 INFO  L146                ILogger]: Resetting RCFGBuilder preferences to default values
[2019-05-23 11:26:08,344 INFO  L146                ILogger]: Resetting TraceAbstraction preferences to default values
[2019-05-23 11:26:08,347 INFO  L146                ILogger]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2019-05-23 11:26:08,347 INFO  L146                ILogger]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2019-05-23 11:26:08,347 INFO  L146                ILogger]: Resetting TreeAutomizer preferences to default values
[2019-05-23 11:26:08,348 INFO  L146                ILogger]: Resetting IcfgToChc preferences to default values
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[2019-05-23 11:26:08,350 INFO  L146                ILogger]: Resetting Boogie Printer preferences to default values
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[2019-05-23 11:26:08,352 INFO  L146                ILogger]: Resetting ReqPrinter preferences to default values
[2019-05-23 11:26:08,353 INFO  L146                ILogger]: Resetting Witness Printer preferences to default values
[2019-05-23 11:26:08,354 INFO  L146                ILogger]: Boogie PL CUP Parser provides no preferences, ignoring...
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[2019-05-23 11:26:08,355 INFO  L146                ILogger]: Resetting SmtParser preferences to default values
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[2019-05-23 11:26:08,357 INFO  L146                ILogger]: Finished resetting all preferences to default values...
[2019-05-23 11:26:08,357 INFO  L146                ILogger]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf
[2019-05-23 11:26:08,372 INFO  L146                ILogger]: Loading preferences was successful
[2019-05-23 11:26:08,372 INFO  L146                ILogger]: Preferences different from defaults after loading the file:
[2019-05-23 11:26:08,373 INFO  L146                ILogger]: Preferences of BlockEncodingV2 differ from their defaults:
[2019-05-23 11:26:08,373 INFO  L146                ILogger]:  * Create parallel compositions if possible=false
[2019-05-23 11:26:08,373 INFO  L146                ILogger]:  * Use SBE=true
[2019-05-23 11:26:08,374 INFO  L146                ILogger]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2019-05-23 11:26:08,374 INFO  L146                ILogger]:  * sizeof long=4
[2019-05-23 11:26:08,374 INFO  L146                ILogger]:  * Overapproximate operations on floating types=true
[2019-05-23 11:26:08,374 INFO  L146                ILogger]:  * sizeof POINTER=4
[2019-05-23 11:26:08,374 INFO  L146                ILogger]:  * Check division by zero=IGNORE
[2019-05-23 11:26:08,374 INFO  L146                ILogger]:  * Pointer to allocated memory at dereference=IGNORE
[2019-05-23 11:26:08,375 INFO  L146                ILogger]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2019-05-23 11:26:08,375 INFO  L146                ILogger]:  * Check array bounds for arrays that are off heap=IGNORE
[2019-05-23 11:26:08,375 INFO  L146                ILogger]:  * sizeof long double=12
[2019-05-23 11:26:08,375 INFO  L146                ILogger]:  * Check if freed pointer was valid=false
[2019-05-23 11:26:08,375 INFO  L146                ILogger]:  * Use constant arrays=true
[2019-05-23 11:26:08,376 INFO  L146                ILogger]:  * Pointer base address is valid at dereference=IGNORE
[2019-05-23 11:26:08,376 INFO  L146                ILogger]: Preferences of RCFGBuilder differ from their defaults:
[2019-05-23 11:26:08,376 INFO  L146                ILogger]:  * Size of a code block=SequenceOfStatements
[2019-05-23 11:26:08,376 INFO  L146                ILogger]:  * To the following directory=./dump/
[2019-05-23 11:26:08,376 INFO  L146                ILogger]:  * SMT solver=External_DefaultMode
[2019-05-23 11:26:08,377 INFO  L146                ILogger]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2019-05-23 11:26:08,377 INFO  L146                ILogger]: Preferences of TraceAbstraction differ from their defaults:
[2019-05-23 11:26:08,377 INFO  L146                ILogger]:  * Compute Interpolants along a Counterexample=FPandBP
[2019-05-23 11:26:08,377 INFO  L146                ILogger]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2019-05-23 11:26:08,377 INFO  L146                ILogger]:  * Trace refinement strategy=CAMEL
[2019-05-23 11:26:08,378 INFO  L146                ILogger]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2019-05-23 11:26:08,378 INFO  L146                ILogger]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2019-05-23 11:26:08,378 INFO  L146                ILogger]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Command for external solver -> z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000
Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement
[2019-05-23 11:26:08,419 INFO  L146                ILogger]: Repository-Root is: /tmp
[2019-05-23 11:26:08,433 INFO  L146                ILogger]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2019-05-23 11:26:08,436 INFO  L146                ILogger]: [Toolchain 1]: Toolchain selected.
[2019-05-23 11:26:08,438 INFO  L146                ILogger]: Initializing CDTParser...
[2019-05-23 11:26:08,438 INFO  L146                ILogger]: CDTParser initialized
[2019-05-23 11:26:08,439 INFO  L146                ILogger]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/array-tiling/pr2_true-unreach-call.i
[2019-05-23 11:26:08,494 INFO  L146                ILogger]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f884043/14c8c40dab624f9eaf8e662b44b848ca/FLAG8c807b59c
[2019-05-23 11:26:08,921 INFO  L146                ILogger]: Found 1 translation units.
[2019-05-23 11:26:08,921 INFO  L146                ILogger]: Scanning /storage/repos/svcomp/c/array-tiling/pr2_true-unreach-call.i
[2019-05-23 11:26:08,928 INFO  L146                ILogger]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f884043/14c8c40dab624f9eaf8e662b44b848ca/FLAG8c807b59c
[2019-05-23 11:26:09,304 INFO  L146                ILogger]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2f884043/14c8c40dab624f9eaf8e662b44b848ca
[2019-05-23 11:26:09,314 INFO  L146                ILogger]: ####################### [Toolchain 1] #######################
[2019-05-23 11:26:09,316 INFO  L146                ILogger]: Walking toolchain with 5 elements.
[2019-05-23 11:26:09,317 INFO  L146                ILogger]: ------------------------CACSL2BoogieTranslator----------------------------
[2019-05-23 11:26:09,317 INFO  L146                ILogger]: Initializing CACSL2BoogieTranslator...
[2019-05-23 11:26:09,320 INFO  L146                ILogger]: CACSL2BoogieTranslator initialized
[2019-05-23 11:26:09,322 INFO  L146                ILogger]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:09" (1/1) ...
[2019-05-23 11:26:09,324 INFO  L146                ILogger]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d24e05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09, skipping insertion in model container
[2019-05-23 11:26:09,325 INFO  L146                ILogger]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.05 11:26:09" (1/1) ...
[2019-05-23 11:26:09,332 INFO  L146                ILogger]: Starting translation in SV-COMP mode 
[2019-05-23 11:26:09,353 INFO  L146                ILogger]: Built tables and reachable declarations
[2019-05-23 11:26:09,557 INFO  L146                ILogger]: Analyzing one entry point: main
[2019-05-23 11:26:09,562 INFO  L146                ILogger]: Completed pre-run
[2019-05-23 11:26:09,595 INFO  L146                ILogger]: Analyzing one entry point: main
[2019-05-23 11:26:09,625 INFO  L146                ILogger]: Completed translation
[2019-05-23 11:26:09,626 INFO  L146                ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09 WrapperNode
[2019-05-23 11:26:09,626 INFO  L146                ILogger]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2019-05-23 11:26:09,627 INFO  L146                ILogger]: ------------------------Boogie Procedure Inliner----------------------------
[2019-05-23 11:26:09,627 INFO  L146                ILogger]: Initializing Boogie Procedure Inliner...
[2019-05-23 11:26:09,627 INFO  L146                ILogger]: Boogie Procedure Inliner initialized
[2019-05-23 11:26:09,636 INFO  L146                ILogger]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ...
[2019-05-23 11:26:09,645 INFO  L146                ILogger]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ...
[2019-05-23 11:26:09,666 INFO  L146                ILogger]: ------------------------ END Boogie Procedure Inliner----------------------------
[2019-05-23 11:26:09,667 INFO  L146                ILogger]: ------------------------Boogie Preprocessor----------------------------
[2019-05-23 11:26:09,667 INFO  L146                ILogger]: Initializing Boogie Preprocessor...
[2019-05-23 11:26:09,667 INFO  L146                ILogger]: Boogie Preprocessor initialized
[2019-05-23 11:26:09,678 INFO  L146                ILogger]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ...
[2019-05-23 11:26:09,678 INFO  L146                ILogger]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ...
[2019-05-23 11:26:09,680 INFO  L146                ILogger]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ...
[2019-05-23 11:26:09,680 INFO  L146                ILogger]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ...
[2019-05-23 11:26:09,687 INFO  L146                ILogger]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ...
[2019-05-23 11:26:09,786 INFO  L146                ILogger]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ...
[2019-05-23 11:26:09,787 INFO  L146                ILogger]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (1/1) ...
[2019-05-23 11:26:09,789 INFO  L146                ILogger]: ------------------------ END Boogie Preprocessor----------------------------
[2019-05-23 11:26:09,790 INFO  L146                ILogger]: ------------------------RCFGBuilder----------------------------
[2019-05-23 11:26:09,790 INFO  L146                ILogger]: Initializing RCFGBuilder...
[2019-05-23 11:26:09,790 INFO  L146                ILogger]: RCFGBuilder initialized
[2019-05-23 11:26:09,793 INFO  L146                ILogger]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (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:4096 -smt2 -in -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:4096 -smt2 -in -t:12000
[2019-05-23 11:26:09,850 INFO  L146                ILogger]: Found specification of procedure write~int
[2019-05-23 11:26:09,850 INFO  L146                ILogger]: Found specification of procedure ULTIMATE.start
[2019-05-23 11:26:09,850 INFO  L146                ILogger]: Found implementation of procedure ULTIMATE.start
[2019-05-23 11:26:09,850 INFO  L146                ILogger]: Found specification of procedure read~int
[2019-05-23 11:26:09,850 INFO  L146                ILogger]: Found specification of procedure #Ultimate.allocOnStack
[2019-05-23 11:26:09,851 INFO  L146                ILogger]: Found specification of procedure ULTIMATE.dealloc
[2019-05-23 11:26:10,305 INFO  L146                ILogger]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2019-05-23 11:26:10,306 INFO  L146                ILogger]: Removed 8 assume(true) statements.
[2019-05-23 11:26:10,307 INFO  L146                ILogger]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:10 BoogieIcfgContainer
[2019-05-23 11:26:10,307 INFO  L146                ILogger]: ------------------------ END RCFGBuilder----------------------------
[2019-05-23 11:26:10,308 INFO  L146                ILogger]: ------------------------TraceAbstraction----------------------------
[2019-05-23 11:26:10,308 INFO  L146                ILogger]: Initializing TraceAbstraction...
[2019-05-23 11:26:10,311 INFO  L146                ILogger]: TraceAbstraction initialized
[2019-05-23 11:26:10,312 INFO  L146                ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.05 11:26:09" (1/3) ...
[2019-05-23 11:26:10,313 INFO  L146                ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea63d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:10, skipping insertion in model container
[2019-05-23 11:26:10,313 INFO  L146                ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.05 11:26:09" (2/3) ...
[2019-05-23 11:26:10,313 INFO  L146                ILogger]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ea63d30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.05 11:26:10, skipping insertion in model container
[2019-05-23 11:26:10,314 INFO  L146                ILogger]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.05 11:26:10" (3/3) ...
[2019-05-23 11:26:10,315 INFO  L146                ILogger]: Analyzing ICFG pr2_true-unreach-call.i
[2019-05-23 11:26:10,325 INFO  L146                ILogger]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2019-05-23 11:26:10,338 INFO  L146                ILogger]: Appying trace abstraction to program that has 1 error locations.
[2019-05-23 11:26:10,356 INFO  L146                ILogger]: Starting to check reachability of 1 error locations.
[2019-05-23 11:26:10,386 INFO  L146                ILogger]: Using default assertion order modulation
[2019-05-23 11:26:10,387 INFO  L146                ILogger]: Interprodecural is true
[2019-05-23 11:26:10,387 INFO  L146                ILogger]: Hoare is true
[2019-05-23 11:26:10,388 INFO  L146                ILogger]: Compute interpolants for FPandBP
[2019-05-23 11:26:10,388 INFO  L146                ILogger]: Backedges is STRAIGHT_LINE
[2019-05-23 11:26:10,388 INFO  L146                ILogger]: Determinization is PREDICATE_ABSTRACTION
[2019-05-23 11:26:10,388 INFO  L146                ILogger]: Difference is false
[2019-05-23 11:26:10,388 INFO  L146                ILogger]: Minimize is MINIMIZE_SEVPA
[2019-05-23 11:26:10,388 INFO  L146                ILogger]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2019-05-23 11:26:10,406 INFO  L146                ILogger]: Start isEmpty. Operand 55 states.
[2019-05-23 11:26:10,413 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 29
[2019-05-23 11:26:10,413 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:10,415 INFO  L146                ILogger]: 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]
[2019-05-23 11:26:10,417 INFO  L146                ILogger]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:10,423 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:10,423 INFO  L146                ILogger]: Analyzing trace with hash 111381474, now seen corresponding path program 1 times
[2019-05-23 11:26:10,425 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:10,426 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:10,471 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:10,471 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:10,471 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:10,535 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:10,647 INFO  L146                ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:10,650 INFO  L146                ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-05-23 11:26:10,650 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-05-23 11:26:10,654 INFO  L146                ILogger]: Interpolant automaton has 5 states
[2019-05-23 11:26:10,667 INFO  L146                ILogger]: Constructing interpolant automaton starting with 5 interpolants.
[2019-05-23 11:26:10,668 INFO  L146                ILogger]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20
[2019-05-23 11:26:10,670 INFO  L146                ILogger]: Start difference. First operand 55 states. Second operand 5 states.
[2019-05-23 11:26:11,065 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:11,065 INFO  L146                ILogger]: Finished difference Result 120 states and 137 transitions.
[2019-05-23 11:26:11,066 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2019-05-23 11:26:11,067 INFO  L146                ILogger]: Start accepts. Automaton has 5 states. Word has length 28
[2019-05-23 11:26:11,068 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:11,077 INFO  L146                ILogger]: With dead ends: 120
[2019-05-23 11:26:11,078 INFO  L146                ILogger]: Without dead ends: 74
[2019-05-23 11:26:11,081 INFO  L146                ILogger]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72
[2019-05-23 11:26:11,100 INFO  L146                ILogger]: Start minimizeSevpa. Operand 74 states.
[2019-05-23 11:26:11,118 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 74 to 50.
[2019-05-23 11:26:11,120 INFO  L146                ILogger]: Start removeUnreachable. Operand 50 states.
[2019-05-23 11:26:11,121 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions.
[2019-05-23 11:26:11,123 INFO  L146                ILogger]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 28
[2019-05-23 11:26:11,123 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:11,124 INFO  L146                ILogger]: Abstraction has 50 states and 54 transitions.
[2019-05-23 11:26:11,124 INFO  L146                ILogger]: Interpolant automaton has 5 states.
[2019-05-23 11:26:11,124 INFO  L146                ILogger]: Start isEmpty. Operand 50 states and 54 transitions.
[2019-05-23 11:26:11,125 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 31
[2019-05-23 11:26:11,125 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:11,126 INFO  L146                ILogger]: 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]
[2019-05-23 11:26:11,126 INFO  L146                ILogger]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:11,126 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:11,127 INFO  L146                ILogger]: Analyzing trace with hash 398667871, now seen corresponding path program 1 times
[2019-05-23 11:26:11,127 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:11,127 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:11,128 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:11,129 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:11,129 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:11,150 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:11,233 INFO  L146                ILogger]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:11,234 INFO  L146                ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-05-23 11:26:11,234 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2019-05-23 11:26:11,236 INFO  L146                ILogger]: Interpolant automaton has 4 states
[2019-05-23 11:26:11,236 INFO  L146                ILogger]: Constructing interpolant automaton starting with 4 interpolants.
[2019-05-23 11:26:11,237 INFO  L146                ILogger]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-05-23 11:26:11,237 INFO  L146                ILogger]: Start difference. First operand 50 states and 54 transitions. Second operand 4 states.
[2019-05-23 11:26:11,359 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:11,359 INFO  L146                ILogger]: Finished difference Result 82 states and 90 transitions.
[2019-05-23 11:26:11,360 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2019-05-23 11:26:11,360 INFO  L146                ILogger]: Start accepts. Automaton has 4 states. Word has length 30
[2019-05-23 11:26:11,360 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:11,361 INFO  L146                ILogger]: With dead ends: 82
[2019-05-23 11:26:11,361 INFO  L146                ILogger]: Without dead ends: 59
[2019-05-23 11:26:11,363 INFO  L146                ILogger]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12
[2019-05-23 11:26:11,363 INFO  L146                ILogger]: Start minimizeSevpa. Operand 59 states.
[2019-05-23 11:26:11,368 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 59 to 51.
[2019-05-23 11:26:11,368 INFO  L146                ILogger]: Start removeUnreachable. Operand 51 states.
[2019-05-23 11:26:11,369 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions.
[2019-05-23 11:26:11,370 INFO  L146                ILogger]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 30
[2019-05-23 11:26:11,370 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:11,370 INFO  L146                ILogger]: Abstraction has 51 states and 55 transitions.
[2019-05-23 11:26:11,370 INFO  L146                ILogger]: Interpolant automaton has 4 states.
[2019-05-23 11:26:11,370 INFO  L146                ILogger]: Start isEmpty. Operand 51 states and 55 transitions.
[2019-05-23 11:26:11,372 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 39
[2019-05-23 11:26:11,372 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:11,372 INFO  L146                ILogger]: 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]
[2019-05-23 11:26:11,372 INFO  L146                ILogger]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:11,373 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:11,373 INFO  L146                ILogger]: Analyzing trace with hash -64035729, now seen corresponding path program 1 times
[2019-05-23 11:26:11,373 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:11,373 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:11,374 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:11,374 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:11,374 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:11,411 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:11,698 WARN  L146                ILogger]: Spent 116.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 10
[2019-05-23 11:26:12,322 WARN  L146                ILogger]: Spent 269.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 7
[2019-05-23 11:26:12,352 INFO  L146                ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:12,353 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:26:12,353 INFO  L146                ILogger]: Switched to mode Z3_FP
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
[2019-05-23 11:26:12,370 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:12,407 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:12,409 INFO  L146                ILogger]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core
[2019-05-23 11:26:12,419 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:26:12,538 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12
[2019-05-23 11:26:12,539 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:12,553 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:12,554 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:12,554 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:19
[2019-05-23 11:26:12,624 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21
[2019-05-23 11:26:12,629 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:12,633 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:12,639 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:12,641 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20
[2019-05-23 11:26:12,642 INFO  L146                ILogger]: Start of recursive call 3:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:12,649 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:12,650 INFO  L146                ILogger]: Start of recursive call 2: 1 dim-1 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:12,663 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:12,663 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:12,664 INFO  L146                ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:29, output treesize:20
[2019-05-23 11:26:12,781 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:12,782 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10
[2019-05-23 11:26:12,784 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:12,788 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:12,788 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:12,789 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:3
[2019-05-23 11:26:12,823 INFO  L146                ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:12,843 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:26:12,844 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 14
[2019-05-23 11:26:12,844 INFO  L146                ILogger]: Interpolant automaton has 14 states
[2019-05-23 11:26:12,844 INFO  L146                ILogger]: Constructing interpolant automaton starting with 14 interpolants.
[2019-05-23 11:26:12,845 INFO  L146                ILogger]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182
[2019-05-23 11:26:12,845 INFO  L146                ILogger]: Start difference. First operand 51 states and 55 transitions. Second operand 14 states.
[2019-05-23 11:26:13,808 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:13,809 INFO  L146                ILogger]: Finished difference Result 176 states and 192 transitions.
[2019-05-23 11:26:13,809 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2019-05-23 11:26:13,809 INFO  L146                ILogger]: Start accepts. Automaton has 14 states. Word has length 38
[2019-05-23 11:26:13,810 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:13,813 INFO  L146                ILogger]: With dead ends: 176
[2019-05-23 11:26:13,813 INFO  L146                ILogger]: Without dead ends: 154
[2019-05-23 11:26:13,814 INFO  L146                ILogger]: 0 DeclaredPredicates, 58 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506
[2019-05-23 11:26:13,815 INFO  L146                ILogger]: Start minimizeSevpa. Operand 154 states.
[2019-05-23 11:26:13,824 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 154 to 65.
[2019-05-23 11:26:13,824 INFO  L146                ILogger]: Start removeUnreachable. Operand 65 states.
[2019-05-23 11:26:13,825 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions.
[2019-05-23 11:26:13,825 INFO  L146                ILogger]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 38
[2019-05-23 11:26:13,826 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:13,826 INFO  L146                ILogger]: Abstraction has 65 states and 72 transitions.
[2019-05-23 11:26:13,826 INFO  L146                ILogger]: Interpolant automaton has 14 states.
[2019-05-23 11:26:13,826 INFO  L146                ILogger]: Start isEmpty. Operand 65 states and 72 transitions.
[2019-05-23 11:26:13,827 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 39
[2019-05-23 11:26:13,827 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:13,828 INFO  L146                ILogger]: 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]
[2019-05-23 11:26:13,828 INFO  L146                ILogger]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:13,828 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:13,828 INFO  L146                ILogger]: Analyzing trace with hash 471043279, now seen corresponding path program 1 times
[2019-05-23 11:26:13,828 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:13,829 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:13,830 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:13,830 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:13,830 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:13,860 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:14,130 INFO  L146                ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:14,131 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:26:14,131 INFO  L146                ILogger]: Switched to mode Z3_FP
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
[2019-05-23 11:26:14,151 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:14,185 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:14,187 INFO  L146                ILogger]: Trace formula consists of 65 conjuncts, 18 conjunts are in the unsatisfiable core
[2019-05-23 11:26:14,190 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:26:14,263 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12
[2019-05-23 11:26:14,264 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:14,318 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:14,319 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:14,319 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19
[2019-05-23 11:26:14,342 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 21
[2019-05-23 11:26:14,346 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:14,348 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:14,352 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:14,353 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 20
[2019-05-23 11:26:14,354 INFO  L146                ILogger]: Start of recursive call 3:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:14,360 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:14,361 INFO  L146                ILogger]: Start of recursive call 2: 1 dim-1 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:14,368 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:14,369 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:14,369 INFO  L146                ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:29, output treesize:20
[2019-05-23 11:26:14,464 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:14,465 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10
[2019-05-23 11:26:14,465 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:14,467 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:14,467 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:14,468 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:3
[2019-05-23 11:26:14,504 INFO  L146                ILogger]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:14,522 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:26:14,522 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 15
[2019-05-23 11:26:14,523 INFO  L146                ILogger]: Interpolant automaton has 15 states
[2019-05-23 11:26:14,523 INFO  L146                ILogger]: Constructing interpolant automaton starting with 15 interpolants.
[2019-05-23 11:26:14,524 INFO  L146                ILogger]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210
[2019-05-23 11:26:14,524 INFO  L146                ILogger]: Start difference. First operand 65 states and 72 transitions. Second operand 15 states.
[2019-05-23 11:26:15,889 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:15,889 INFO  L146                ILogger]: Finished difference Result 239 states and 262 transitions.
[2019-05-23 11:26:15,890 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 48 states. 
[2019-05-23 11:26:15,890 INFO  L146                ILogger]: Start accepts. Automaton has 15 states. Word has length 38
[2019-05-23 11:26:15,890 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:15,893 INFO  L146                ILogger]: With dead ends: 239
[2019-05-23 11:26:15,893 INFO  L146                ILogger]: Without dead ends: 237
[2019-05-23 11:26:15,895 INFO  L146                ILogger]: 0 DeclaredPredicates, 88 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 861 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=625, Invalid=2237, Unknown=0, NotChecked=0, Total=2862
[2019-05-23 11:26:15,895 INFO  L146                ILogger]: Start minimizeSevpa. Operand 237 states.
[2019-05-23 11:26:15,907 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 237 to 81.
[2019-05-23 11:26:15,907 INFO  L146                ILogger]: Start removeUnreachable. Operand 81 states.
[2019-05-23 11:26:15,908 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 81 states to 81 states and 92 transitions.
[2019-05-23 11:26:15,908 INFO  L146                ILogger]: Start accepts. Automaton has 81 states and 92 transitions. Word has length 38
[2019-05-23 11:26:15,908 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:15,909 INFO  L146                ILogger]: Abstraction has 81 states and 92 transitions.
[2019-05-23 11:26:15,909 INFO  L146                ILogger]: Interpolant automaton has 15 states.
[2019-05-23 11:26:15,909 INFO  L146                ILogger]: Start isEmpty. Operand 81 states and 92 transitions.
[2019-05-23 11:26:15,910 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 47
[2019-05-23 11:26:15,910 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:15,911 INFO  L146                ILogger]: trace histogram [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]
[2019-05-23 11:26:15,911 INFO  L146                ILogger]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:15,911 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:15,911 INFO  L146                ILogger]: Analyzing trace with hash -1477605249, now seen corresponding path program 2 times
[2019-05-23 11:26:15,911 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:15,912 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:15,912 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:15,912 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:15,913 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:15,935 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:16,276 INFO  L146                ILogger]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:16,276 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:26:16,276 INFO  L146                ILogger]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-05-23 11:26:16,286 INFO  L146                ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2019-05-23 11:26:16,319 INFO  L146                ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2019-05-23 11:26:16,319 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:16,322 INFO  L146                ILogger]: Trace formula consists of 75 conjuncts, 16 conjunts are in the unsatisfiable core
[2019-05-23 11:26:16,325 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:26:16,341 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12
[2019-05-23 11:26:16,342 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:16,352 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:16,352 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:16,352 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22
[2019-05-23 11:26:16,370 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 32
[2019-05-23 11:26:16,388 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,401 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,407 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,408 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 28
[2019-05-23 11:26:16,408 INFO  L146                ILogger]: Start of recursive call 3:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:16,414 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:16,415 INFO  L146                ILogger]: Start of recursive call 2: 1 dim-1 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:16,432 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:16,433 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:16,433 INFO  L146                ILogger]: Needed 3 recursive calls to eliminate 1 variables, input treesize:46, output treesize:34
[2019-05-23 11:26:16,577 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,578 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,578 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,579 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:16,580 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 35
[2019-05-23 11:26:16,580 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:16,635 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:16,635 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:16,636 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:39
[2019-05-23 11:26:16,665 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,666 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,669 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,672 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,673 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,675 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,677 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:16,677 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 50
[2019-05-23 11:26:16,678 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:16,693 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:16,694 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2019-05-23 11:26:16,694 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:55, output treesize:51
[2019-05-23 11:26:16,843 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,844 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,845 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,845 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,846 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:16,847 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:16,848 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 16
[2019-05-23 11:26:16,849 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:16,853 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:16,854 INFO  L146                ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:16,854 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:3
[2019-05-23 11:26:16,901 INFO  L146                ILogger]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:16,925 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:26:16,925 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 20
[2019-05-23 11:26:16,926 INFO  L146                ILogger]: Interpolant automaton has 20 states
[2019-05-23 11:26:16,926 INFO  L146                ILogger]: Constructing interpolant automaton starting with 20 interpolants.
[2019-05-23 11:26:16,927 INFO  L146                ILogger]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380
[2019-05-23 11:26:16,927 INFO  L146                ILogger]: Start difference. First operand 81 states and 92 transitions. Second operand 20 states.
[2019-05-23 11:26:18,633 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:18,634 INFO  L146                ILogger]: Finished difference Result 303 states and 337 transitions.
[2019-05-23 11:26:18,634 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. 
[2019-05-23 11:26:18,634 INFO  L146                ILogger]: Start accepts. Automaton has 20 states. Word has length 46
[2019-05-23 11:26:18,635 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:18,636 INFO  L146                ILogger]: With dead ends: 303
[2019-05-23 11:26:18,636 INFO  L146                ILogger]: Without dead ends: 270
[2019-05-23 11:26:18,638 INFO  L146                ILogger]: 0 DeclaredPredicates, 85 GetRequests, 38 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=353, Invalid=1627, Unknown=0, NotChecked=0, Total=1980
[2019-05-23 11:26:18,638 INFO  L146                ILogger]: Start minimizeSevpa. Operand 270 states.
[2019-05-23 11:26:18,648 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 270 to 98.
[2019-05-23 11:26:18,649 INFO  L146                ILogger]: Start removeUnreachable. Operand 98 states.
[2019-05-23 11:26:18,650 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 98 states to 98 states and 113 transitions.
[2019-05-23 11:26:18,650 INFO  L146                ILogger]: Start accepts. Automaton has 98 states and 113 transitions. Word has length 46
[2019-05-23 11:26:18,651 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:18,651 INFO  L146                ILogger]: Abstraction has 98 states and 113 transitions.
[2019-05-23 11:26:18,651 INFO  L146                ILogger]: Interpolant automaton has 20 states.
[2019-05-23 11:26:18,651 INFO  L146                ILogger]: Start isEmpty. Operand 98 states and 113 transitions.
[2019-05-23 11:26:18,653 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 47
[2019-05-23 11:26:18,653 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:18,653 INFO  L146                ILogger]: trace histogram [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]
[2019-05-23 11:26:18,653 INFO  L146                ILogger]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:18,653 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:18,653 INFO  L146                ILogger]: Analyzing trace with hash 643027167, now seen corresponding path program 1 times
[2019-05-23 11:26:18,654 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:18,654 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:18,654 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:18,655 INFO  L146                ILogger]: Changing assertion order to NOT_INCREMENTALLY
[2019-05-23 11:26:18,655 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:18,663 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:18,738 INFO  L146                ILogger]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:18,739 INFO  L146                ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-05-23 11:26:18,739 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-05-23 11:26:18,739 INFO  L146                ILogger]: Interpolant automaton has 3 states
[2019-05-23 11:26:18,740 INFO  L146                ILogger]: Constructing interpolant automaton starting with 3 interpolants.
[2019-05-23 11:26:18,740 INFO  L146                ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-05-23 11:26:18,740 INFO  L146                ILogger]: Start difference. First operand 98 states and 113 transitions. Second operand 3 states.
[2019-05-23 11:26:18,790 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:18,790 INFO  L146                ILogger]: Finished difference Result 162 states and 185 transitions.
[2019-05-23 11:26:18,792 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-05-23 11:26:18,792 INFO  L146                ILogger]: Start accepts. Automaton has 3 states. Word has length 46
[2019-05-23 11:26:18,793 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:18,794 INFO  L146                ILogger]: With dead ends: 162
[2019-05-23 11:26:18,794 INFO  L146                ILogger]: Without dead ends: 129
[2019-05-23 11:26:18,795 INFO  L146                ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-05-23 11:26:18,795 INFO  L146                ILogger]: Start minimizeSevpa. Operand 129 states.
[2019-05-23 11:26:18,809 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 129 to 106.
[2019-05-23 11:26:18,810 INFO  L146                ILogger]: Start removeUnreachable. Operand 106 states.
[2019-05-23 11:26:18,816 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 106 states to 106 states and 122 transitions.
[2019-05-23 11:26:18,816 INFO  L146                ILogger]: Start accepts. Automaton has 106 states and 122 transitions. Word has length 46
[2019-05-23 11:26:18,816 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:18,816 INFO  L146                ILogger]: Abstraction has 106 states and 122 transitions.
[2019-05-23 11:26:18,816 INFO  L146                ILogger]: Interpolant automaton has 3 states.
[2019-05-23 11:26:18,816 INFO  L146                ILogger]: Start isEmpty. Operand 106 states and 122 transitions.
[2019-05-23 11:26:18,822 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 53
[2019-05-23 11:26:18,822 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:18,822 INFO  L146                ILogger]: trace histogram [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]
[2019-05-23 11:26:18,822 INFO  L146                ILogger]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:18,823 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:18,823 INFO  L146                ILogger]: Analyzing trace with hash 2076610334, now seen corresponding path program 1 times
[2019-05-23 11:26:18,823 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:18,823 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:18,824 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:18,824 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:18,824 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:18,839 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:19,077 INFO  L146                ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:19,078 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:26:19,078 INFO  L146                ILogger]: Switched to mode Z3_FP
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
[2019-05-23 11:26:19,089 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:19,105 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:19,106 INFO  L146                ILogger]: Trace formula consists of 84 conjuncts, 21 conjunts are in the unsatisfiable core
[2019-05-23 11:26:19,108 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:26:19,239 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2019-05-23 11:26:19,239 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:19,242 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:19,243 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:19,243 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13
[2019-05-23 11:26:19,558 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2019-05-23 11:26:19,558 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:19,559 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:19,559 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:19,559 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3
[2019-05-23 11:26:19,588 INFO  L146                ILogger]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:19,611 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:26:19,612 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20
[2019-05-23 11:26:19,612 INFO  L146                ILogger]: Interpolant automaton has 20 states
[2019-05-23 11:26:19,612 INFO  L146                ILogger]: Constructing interpolant automaton starting with 20 interpolants.
[2019-05-23 11:26:19,613 INFO  L146                ILogger]: CoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380
[2019-05-23 11:26:19,613 INFO  L146                ILogger]: Start difference. First operand 106 states and 122 transitions. Second operand 20 states.
[2019-05-23 11:26:20,844 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:20,845 INFO  L146                ILogger]: Finished difference Result 267 states and 295 transitions.
[2019-05-23 11:26:20,845 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 43 states. 
[2019-05-23 11:26:20,845 INFO  L146                ILogger]: Start accepts. Automaton has 20 states. Word has length 52
[2019-05-23 11:26:20,846 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:20,847 INFO  L146                ILogger]: With dead ends: 267
[2019-05-23 11:26:20,847 INFO  L146                ILogger]: Without dead ends: 265
[2019-05-23 11:26:20,850 INFO  L146                ILogger]: 0 DeclaredPredicates, 99 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 841 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=657, Invalid=2423, Unknown=0, NotChecked=0, Total=3080
[2019-05-23 11:26:20,850 INFO  L146                ILogger]: Start minimizeSevpa. Operand 265 states.
[2019-05-23 11:26:20,859 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 265 to 144.
[2019-05-23 11:26:20,859 INFO  L146                ILogger]: Start removeUnreachable. Operand 144 states.
[2019-05-23 11:26:20,861 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 144 states to 144 states and 165 transitions.
[2019-05-23 11:26:20,861 INFO  L146                ILogger]: Start accepts. Automaton has 144 states and 165 transitions. Word has length 52
[2019-05-23 11:26:20,861 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:20,861 INFO  L146                ILogger]: Abstraction has 144 states and 165 transitions.
[2019-05-23 11:26:20,861 INFO  L146                ILogger]: Interpolant automaton has 20 states.
[2019-05-23 11:26:20,862 INFO  L146                ILogger]: Start isEmpty. Operand 144 states and 165 transitions.
[2019-05-23 11:26:20,863 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 53
[2019-05-23 11:26:20,863 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:20,863 INFO  L146                ILogger]: trace histogram [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]
[2019-05-23 11:26:20,864 INFO  L146                ILogger]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:20,864 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:20,864 INFO  L146                ILogger]: Analyzing trace with hash -1535412546, now seen corresponding path program 1 times
[2019-05-23 11:26:20,864 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:20,864 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:20,865 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:20,865 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:20,865 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:20,884 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:21,077 INFO  L146                ILogger]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:21,077 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:26:21,077 INFO  L146                ILogger]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-05-23 11:26:21,086 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:21,101 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:21,102 INFO  L146                ILogger]: Trace formula consists of 84 conjuncts, 15 conjunts are in the unsatisfiable core
[2019-05-23 11:26:21,104 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:26:21,191 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2019-05-23 11:26:21,191 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:21,201 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:21,202 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:21,202 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:20, output treesize:13
[2019-05-23 11:26:21,283 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2019-05-23 11:26:21,283 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:21,309 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:21,310 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:21,310 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3
[2019-05-23 11:26:21,329 INFO  L146                ILogger]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:21,348 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:26:21,348 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20
[2019-05-23 11:26:21,348 INFO  L146                ILogger]: Interpolant automaton has 20 states
[2019-05-23 11:26:21,349 INFO  L146                ILogger]: Constructing interpolant automaton starting with 20 interpolants.
[2019-05-23 11:26:21,349 INFO  L146                ILogger]: CoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380
[2019-05-23 11:26:21,349 INFO  L146                ILogger]: Start difference. First operand 144 states and 165 transitions. Second operand 20 states.
[2019-05-23 11:26:22,149 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:22,149 INFO  L146                ILogger]: Finished difference Result 316 states and 354 transitions.
[2019-05-23 11:26:22,150 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 16 states. 
[2019-05-23 11:26:22,150 INFO  L146                ILogger]: Start accepts. Automaton has 20 states. Word has length 52
[2019-05-23 11:26:22,150 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:22,152 INFO  L146                ILogger]: With dead ends: 316
[2019-05-23 11:26:22,153 INFO  L146                ILogger]: Without dead ends: 249
[2019-05-23 11:26:22,154 INFO  L146                ILogger]: 0 DeclaredPredicates, 76 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056
[2019-05-23 11:26:22,154 INFO  L146                ILogger]: Start minimizeSevpa. Operand 249 states.
[2019-05-23 11:26:22,163 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 249 to 183.
[2019-05-23 11:26:22,163 INFO  L146                ILogger]: Start removeUnreachable. Operand 183 states.
[2019-05-23 11:26:22,164 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 183 states to 183 states and 206 transitions.
[2019-05-23 11:26:22,165 INFO  L146                ILogger]: Start accepts. Automaton has 183 states and 206 transitions. Word has length 52
[2019-05-23 11:26:22,165 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:22,165 INFO  L146                ILogger]: Abstraction has 183 states and 206 transitions.
[2019-05-23 11:26:22,165 INFO  L146                ILogger]: Interpolant automaton has 20 states.
[2019-05-23 11:26:22,165 INFO  L146                ILogger]: Start isEmpty. Operand 183 states and 206 transitions.
[2019-05-23 11:26:22,166 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 55
[2019-05-23 11:26:22,167 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:22,167 INFO  L146                ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-05-23 11:26:22,167 INFO  L146                ILogger]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:22,167 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:22,167 INFO  L146                ILogger]: Analyzing trace with hash -833062033, now seen corresponding path program 1 times
[2019-05-23 11:26:22,168 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:22,168 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:22,168 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:22,169 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:22,169 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:22,187 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:22,866 WARN  L146                ILogger]: Spent 209.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13
[2019-05-23 11:26:23,297 INFO  L146                ILogger]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:23,297 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:26:23,297 INFO  L146                ILogger]: Switched to mode Z3_FP
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
[2019-05-23 11:26:23,306 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:23,323 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:23,324 INFO  L146                ILogger]: Trace formula consists of 85 conjuncts, 20 conjunts are in the unsatisfiable core
[2019-05-23 11:26:23,326 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:26:23,377 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12
[2019-05-23 11:26:23,377 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:23,385 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:23,385 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:23,385 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22
[2019-05-23 11:26:23,451 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:23,452 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28
[2019-05-23 11:26:23,453 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:23,461 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:23,462 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:23,462 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34
[2019-05-23 11:26:23,570 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:23,571 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:23,573 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:23,574 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:23,575 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 35
[2019-05-23 11:26:23,576 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:23,589 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:23,589 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:23,590 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:42, output treesize:38
[2019-05-23 11:26:23,649 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:23,650 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:23,651 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:23,665 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:23,665 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:23,666 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:23,667 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:23,667 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 45 treesize of output 50
[2019-05-23 11:26:23,668 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:23,682 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:23,683 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:23,683 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:54, output treesize:50
[2019-05-23 11:26:23,990 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:23,992 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:23,997 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:23,999 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,000 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,002 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,003 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,004 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,005 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,005 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,007 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:24,007 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 75 treesize of output 65
[2019-05-23 11:26:24,008 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:24,061 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:24,062 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2019-05-23 11:26:24,063 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:86, output treesize:82
[2019-05-23 11:26:24,114 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,115 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,116 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,117 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,118 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,120 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,121 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,122 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,123 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,124 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,126 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,127 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,131 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,132 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,133 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,134 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:24,134 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 90 treesize of output 77
[2019-05-23 11:26:24,135 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:24,152 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:24,154 INFO  L146                ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars,  End of recursive call: 2 dim-0 vars,  and 1 xjuncts.
[2019-05-23 11:26:24,154 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:101, output treesize:97
[2019-05-23 11:26:24,273 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,273 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,274 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,275 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,276 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,276 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,277 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,278 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,279 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,280 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,282 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,283 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,284 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,285 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:24,286 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:24,287 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 83 treesize of output 19
[2019-05-23 11:26:24,288 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:24,292 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:24,293 INFO  L146                ILogger]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:24,293 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 4 variables, input treesize:91, output treesize:3
[2019-05-23 11:26:24,338 INFO  L146                ILogger]: Checked inductivity of 27 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:24,356 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:26:24,357 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 18] total 32
[2019-05-23 11:26:24,358 INFO  L146                ILogger]: Interpolant automaton has 32 states
[2019-05-23 11:26:24,358 INFO  L146                ILogger]: Constructing interpolant automaton starting with 32 interpolants.
[2019-05-23 11:26:24,358 INFO  L146                ILogger]: CoverageRelationStatistics Valid=127, Invalid=865, Unknown=0, NotChecked=0, Total=992
[2019-05-23 11:26:24,358 INFO  L146                ILogger]: Start difference. First operand 183 states and 206 transitions. Second operand 32 states.
[2019-05-23 11:26:28,362 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:28,362 INFO  L146                ILogger]: Finished difference Result 350 states and 378 transitions.
[2019-05-23 11:26:28,363 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 40 states. 
[2019-05-23 11:26:28,363 INFO  L146                ILogger]: Start accepts. Automaton has 32 states. Word has length 54
[2019-05-23 11:26:28,363 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:28,364 INFO  L146                ILogger]: With dead ends: 350
[2019-05-23 11:26:28,364 INFO  L146                ILogger]: Without dead ends: 295
[2019-05-23 11:26:28,366 INFO  L146                ILogger]: 0 DeclaredPredicates, 108 GetRequests, 40 SyntacticMatches, 4 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 4.4s TimeCoverageRelationStatistics Valid=677, Invalid=3611, Unknown=2, NotChecked=0, Total=4290
[2019-05-23 11:26:28,367 INFO  L146                ILogger]: Start minimizeSevpa. Operand 295 states.
[2019-05-23 11:26:28,374 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 295 to 151.
[2019-05-23 11:26:28,374 INFO  L146                ILogger]: Start removeUnreachable. Operand 151 states.
[2019-05-23 11:26:28,375 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 151 states to 151 states and 168 transitions.
[2019-05-23 11:26:28,375 INFO  L146                ILogger]: Start accepts. Automaton has 151 states and 168 transitions. Word has length 54
[2019-05-23 11:26:28,375 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:28,375 INFO  L146                ILogger]: Abstraction has 151 states and 168 transitions.
[2019-05-23 11:26:28,376 INFO  L146                ILogger]: Interpolant automaton has 32 states.
[2019-05-23 11:26:28,376 INFO  L146                ILogger]: Start isEmpty. Operand 151 states and 168 transitions.
[2019-05-23 11:26:28,376 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 61
[2019-05-23 11:26:28,377 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:28,377 INFO  L146                ILogger]: trace histogram [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]
[2019-05-23 11:26:28,377 INFO  L146                ILogger]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:28,377 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:28,377 INFO  L146                ILogger]: Analyzing trace with hash 427933390, now seen corresponding path program 1 times
[2019-05-23 11:26:28,378 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:28,378 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:28,378 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:28,379 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:28,379 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:28,384 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:28,445 INFO  L146                ILogger]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked.
[2019-05-23 11:26:28,446 INFO  L146                ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-05-23 11:26:28,446 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2019-05-23 11:26:28,446 INFO  L146                ILogger]: Interpolant automaton has 3 states
[2019-05-23 11:26:28,447 INFO  L146                ILogger]: Constructing interpolant automaton starting with 3 interpolants.
[2019-05-23 11:26:28,447 INFO  L146                ILogger]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-05-23 11:26:28,447 INFO  L146                ILogger]: Start difference. First operand 151 states and 168 transitions. Second operand 3 states.
[2019-05-23 11:26:28,614 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:28,614 INFO  L146                ILogger]: Finished difference Result 205 states and 225 transitions.
[2019-05-23 11:26:28,615 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2019-05-23 11:26:28,615 INFO  L146                ILogger]: Start accepts. Automaton has 3 states. Word has length 60
[2019-05-23 11:26:28,615 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:28,616 INFO  L146                ILogger]: With dead ends: 205
[2019-05-23 11:26:28,617 INFO  L146                ILogger]: Without dead ends: 153
[2019-05-23 11:26:28,617 INFO  L146                ILogger]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6
[2019-05-23 11:26:28,618 INFO  L146                ILogger]: Start minimizeSevpa. Operand 153 states.
[2019-05-23 11:26:28,625 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 153 to 131.
[2019-05-23 11:26:28,625 INFO  L146                ILogger]: Start removeUnreachable. Operand 131 states.
[2019-05-23 11:26:28,626 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 131 states to 131 states and 142 transitions.
[2019-05-23 11:26:28,626 INFO  L146                ILogger]: Start accepts. Automaton has 131 states and 142 transitions. Word has length 60
[2019-05-23 11:26:28,626 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:28,626 INFO  L146                ILogger]: Abstraction has 131 states and 142 transitions.
[2019-05-23 11:26:28,627 INFO  L146                ILogger]: Interpolant automaton has 3 states.
[2019-05-23 11:26:28,627 INFO  L146                ILogger]: Start isEmpty. Operand 131 states and 142 transitions.
[2019-05-23 11:26:28,627 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 67
[2019-05-23 11:26:28,627 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:28,628 INFO  L146                ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 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]
[2019-05-23 11:26:28,628 INFO  L146                ILogger]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:28,628 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:28,628 INFO  L146                ILogger]: Analyzing trace with hash -2002101363, now seen corresponding path program 2 times
[2019-05-23 11:26:28,629 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:28,629 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:28,630 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:28,630 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:28,630 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:28,657 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:29,077 WARN  L146                ILogger]: Spent 218.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 5
[2019-05-23 11:26:29,496 INFO  L146                ILogger]: Checked inductivity of 31 backedges. 16 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:29,496 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:26:29,496 INFO  L146                ILogger]: Switched to mode Z3_FP
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
[2019-05-23 11:26:29,508 INFO  L146                ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2019-05-23 11:26:29,535 INFO  L146                ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2019-05-23 11:26:29,535 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:29,536 INFO  L146                ILogger]: Trace formula consists of 103 conjuncts, 12 conjunts are in the unsatisfiable core
[2019-05-23 11:26:29,539 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:26:29,830 INFO  L146                ILogger]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:29,848 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:26:29,848 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23
[2019-05-23 11:26:29,848 INFO  L146                ILogger]: Interpolant automaton has 23 states
[2019-05-23 11:26:29,848 INFO  L146                ILogger]: Constructing interpolant automaton starting with 23 interpolants.
[2019-05-23 11:26:29,849 INFO  L146                ILogger]: CoverageRelationStatistics Valid=108, Invalid=398, Unknown=0, NotChecked=0, Total=506
[2019-05-23 11:26:29,849 INFO  L146                ILogger]: Start difference. First operand 131 states and 142 transitions. Second operand 23 states.
[2019-05-23 11:26:30,804 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:30,805 INFO  L146                ILogger]: Finished difference Result 262 states and 281 transitions.
[2019-05-23 11:26:30,807 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 18 states. 
[2019-05-23 11:26:30,807 INFO  L146                ILogger]: Start accepts. Automaton has 23 states. Word has length 66
[2019-05-23 11:26:30,807 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:30,808 INFO  L146                ILogger]: With dead ends: 262
[2019-05-23 11:26:30,809 INFO  L146                ILogger]: Without dead ends: 175
[2019-05-23 11:26:30,810 INFO  L146                ILogger]: 0 DeclaredPredicates, 88 GetRequests, 56 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=247, Invalid=809, Unknown=0, NotChecked=0, Total=1056
[2019-05-23 11:26:30,810 INFO  L146                ILogger]: Start minimizeSevpa. Operand 175 states.
[2019-05-23 11:26:30,816 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 175 to 151.
[2019-05-23 11:26:30,817 INFO  L146                ILogger]: Start removeUnreachable. Operand 151 states.
[2019-05-23 11:26:30,817 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions.
[2019-05-23 11:26:30,818 INFO  L146                ILogger]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 66
[2019-05-23 11:26:30,818 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:30,818 INFO  L146                ILogger]: Abstraction has 151 states and 162 transitions.
[2019-05-23 11:26:30,818 INFO  L146                ILogger]: Interpolant automaton has 23 states.
[2019-05-23 11:26:30,818 INFO  L146                ILogger]: Start isEmpty. Operand 151 states and 162 transitions.
[2019-05-23 11:26:30,819 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 75
[2019-05-23 11:26:30,819 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:30,819 INFO  L146                ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 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]
[2019-05-23 11:26:30,819 INFO  L146                ILogger]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:30,820 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:30,820 INFO  L146                ILogger]: Analyzing trace with hash 248072093, now seen corresponding path program 3 times
[2019-05-23 11:26:30,820 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:30,820 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:30,821 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:30,821 INFO  L146                ILogger]: Changing assertion order to NOT_INCREMENTALLY
[2019-05-23 11:26:30,821 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:30,834 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:31,141 INFO  L146                ILogger]: Checked inductivity of 40 backedges. 8 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:31,141 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:26:31,141 INFO  L146                ILogger]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-05-23 11:26:31,149 INFO  L146                ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2019-05-23 11:26:31,170 INFO  L146                ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2019-05-23 11:26:31,170 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:31,171 INFO  L146                ILogger]: Trace formula consists of 113 conjuncts, 20 conjunts are in the unsatisfiable core
[2019-05-23 11:26:31,174 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:26:31,281 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12
[2019-05-23 11:26:31,281 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:31,288 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:31,289 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:31,289 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22
[2019-05-23 11:26:31,373 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:31,374 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25
[2019-05-23 11:26:31,375 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:31,382 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:31,383 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:31,383 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19
[2019-05-23 11:26:31,414 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:31,415 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25
[2019-05-23 11:26:31,416 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:31,459 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:31,460 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2019-05-23 11:26:31,460 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:31
[2019-05-23 11:26:31,674 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:31,675 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:31,675 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10
[2019-05-23 11:26:31,676 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:31,744 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:31,745 INFO  L146                ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:31,745 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:7
[2019-05-23 11:26:31,801 INFO  L146                ILogger]: Checked inductivity of 40 backedges. 22 proven. 14 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2019-05-23 11:26:31,819 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:26:31,820 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 28
[2019-05-23 11:26:31,820 INFO  L146                ILogger]: Interpolant automaton has 28 states
[2019-05-23 11:26:31,820 INFO  L146                ILogger]: Constructing interpolant automaton starting with 28 interpolants.
[2019-05-23 11:26:31,821 INFO  L146                ILogger]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756
[2019-05-23 11:26:31,821 INFO  L146                ILogger]: Start difference. First operand 151 states and 162 transitions. Second operand 28 states.
[2019-05-23 11:26:34,562 WARN  L146                ILogger]: Spent 157.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 19
[2019-05-23 11:26:35,529 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:35,529 INFO  L146                ILogger]: Finished difference Result 378 states and 398 transitions.
[2019-05-23 11:26:35,530 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 69 states. 
[2019-05-23 11:26:35,530 INFO  L146                ILogger]: Start accepts. Automaton has 28 states. Word has length 74
[2019-05-23 11:26:35,530 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:35,531 INFO  L146                ILogger]: With dead ends: 378
[2019-05-23 11:26:35,531 INFO  L146                ILogger]: Without dead ends: 356
[2019-05-23 11:26:35,534 INFO  L146                ILogger]: 0 DeclaredPredicates, 151 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2245 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=811, Invalid=7199, Unknown=0, NotChecked=0, Total=8010
[2019-05-23 11:26:35,535 INFO  L146                ILogger]: Start minimizeSevpa. Operand 356 states.
[2019-05-23 11:26:35,545 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 356 to 201.
[2019-05-23 11:26:35,545 INFO  L146                ILogger]: Start removeUnreachable. Operand 201 states.
[2019-05-23 11:26:35,546 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 201 states to 201 states and 213 transitions.
[2019-05-23 11:26:35,546 INFO  L146                ILogger]: Start accepts. Automaton has 201 states and 213 transitions. Word has length 74
[2019-05-23 11:26:35,547 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:35,547 INFO  L146                ILogger]: Abstraction has 201 states and 213 transitions.
[2019-05-23 11:26:35,547 INFO  L146                ILogger]: Interpolant automaton has 28 states.
[2019-05-23 11:26:35,547 INFO  L146                ILogger]: Start isEmpty. Operand 201 states and 213 transitions.
[2019-05-23 11:26:35,548 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 75
[2019-05-23 11:26:35,548 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:35,548 INFO  L146                ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 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]
[2019-05-23 11:26:35,549 INFO  L146                ILogger]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:35,549 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:35,549 INFO  L146                ILogger]: Analyzing trace with hash -1444145251, now seen corresponding path program 1 times
[2019-05-23 11:26:35,549 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:35,549 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:35,550 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:35,550 INFO  L146                ILogger]: Changing assertion order to NOT_INCREMENTALLY
[2019-05-23 11:26:35,550 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:35,559 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:35,745 INFO  L146                ILogger]: Checked inductivity of 40 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked.
[2019-05-23 11:26:35,745 INFO  L146                ILogger]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2019-05-23 11:26:35,746 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5
[2019-05-23 11:26:35,746 INFO  L146                ILogger]: Interpolant automaton has 5 states
[2019-05-23 11:26:35,746 INFO  L146                ILogger]: Constructing interpolant automaton starting with 5 interpolants.
[2019-05-23 11:26:35,746 INFO  L146                ILogger]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2019-05-23 11:26:35,746 INFO  L146                ILogger]: Start difference. First operand 201 states and 213 transitions. Second operand 5 states.
[2019-05-23 11:26:35,780 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:35,781 INFO  L146                ILogger]: Finished difference Result 277 states and 291 transitions.
[2019-05-23 11:26:35,784 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2019-05-23 11:26:35,784 INFO  L146                ILogger]: Start accepts. Automaton has 5 states. Word has length 74
[2019-05-23 11:26:35,784 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:35,785 INFO  L146                ILogger]: With dead ends: 277
[2019-05-23 11:26:35,785 INFO  L146                ILogger]: Without dead ends: 221
[2019-05-23 11:26:35,786 INFO  L146                ILogger]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30
[2019-05-23 11:26:35,786 INFO  L146                ILogger]: Start minimizeSevpa. Operand 221 states.
[2019-05-23 11:26:35,794 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 221 to 183.
[2019-05-23 11:26:35,794 INFO  L146                ILogger]: Start removeUnreachable. Operand 183 states.
[2019-05-23 11:26:35,795 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 183 states to 183 states and 192 transitions.
[2019-05-23 11:26:35,795 INFO  L146                ILogger]: Start accepts. Automaton has 183 states and 192 transitions. Word has length 74
[2019-05-23 11:26:35,796 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:35,796 INFO  L146                ILogger]: Abstraction has 183 states and 192 transitions.
[2019-05-23 11:26:35,796 INFO  L146                ILogger]: Interpolant automaton has 5 states.
[2019-05-23 11:26:35,796 INFO  L146                ILogger]: Start isEmpty. Operand 183 states and 192 transitions.
[2019-05-23 11:26:35,797 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 77
[2019-05-23 11:26:35,797 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:35,797 INFO  L146                ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 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]
[2019-05-23 11:26:35,797 INFO  L146                ILogger]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:35,797 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:35,798 INFO  L146                ILogger]: Analyzing trace with hash 1676512026, now seen corresponding path program 1 times
[2019-05-23 11:26:35,798 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:35,798 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:35,799 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:35,799 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:35,799 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:35,812 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:36,213 INFO  L146                ILogger]: Checked inductivity of 42 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked.
[2019-05-23 11:26:36,214 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:26:36,214 INFO  L146                ILogger]: Switched to mode Z3_FP
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
[2019-05-23 11:26:36,222 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:36,242 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:36,243 INFO  L146                ILogger]: Trace formula consists of 116 conjuncts, 30 conjunts are in the unsatisfiable core
[2019-05-23 11:26:36,249 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:26:36,313 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12
[2019-05-23 11:26:36,314 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:36,323 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:36,323 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:36,323 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19
[2019-05-23 11:26:36,345 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:36,347 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22
[2019-05-23 11:26:36,347 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:36,353 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:36,354 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:36,354 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22
[2019-05-23 11:26:36,500 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:36,500 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10
[2019-05-23 11:26:36,501 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:36,502 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:36,502 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:36,502 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:3
[2019-05-23 11:26:36,564 INFO  L146                ILogger]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:36,583 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:26:36,583 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 17] total 27
[2019-05-23 11:26:36,583 INFO  L146                ILogger]: Interpolant automaton has 27 states
[2019-05-23 11:26:36,584 INFO  L146                ILogger]: Constructing interpolant automaton starting with 27 interpolants.
[2019-05-23 11:26:36,584 INFO  L146                ILogger]: CoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702
[2019-05-23 11:26:36,584 INFO  L146                ILogger]: Start difference. First operand 183 states and 192 transitions. Second operand 27 states.
[2019-05-23 11:26:36,791 WARN  L146                ILogger]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 13
[2019-05-23 11:26:39,242 WARN  L146                ILogger]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 34
[2019-05-23 11:26:40,460 WARN  L146                ILogger]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 31
[2019-05-23 11:26:40,723 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:40,724 INFO  L146                ILogger]: Finished difference Result 351 states and 366 transitions.
[2019-05-23 11:26:40,724 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 51 states. 
[2019-05-23 11:26:40,724 INFO  L146                ILogger]: Start accepts. Automaton has 27 states. Word has length 76
[2019-05-23 11:26:40,725 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:40,726 INFO  L146                ILogger]: With dead ends: 351
[2019-05-23 11:26:40,726 INFO  L146                ILogger]: Without dead ends: 313
[2019-05-23 11:26:40,728 INFO  L146                ILogger]: 0 DeclaredPredicates, 138 GetRequests, 63 SyntacticMatches, 4 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1322 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=811, Invalid=4445, Unknown=0, NotChecked=0, Total=5256
[2019-05-23 11:26:40,729 INFO  L146                ILogger]: Start minimizeSevpa. Operand 313 states.
[2019-05-23 11:26:40,739 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 313 to 213.
[2019-05-23 11:26:40,739 INFO  L146                ILogger]: Start removeUnreachable. Operand 213 states.
[2019-05-23 11:26:40,740 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 213 states to 213 states and 222 transitions.
[2019-05-23 11:26:40,740 INFO  L146                ILogger]: Start accepts. Automaton has 213 states and 222 transitions. Word has length 76
[2019-05-23 11:26:40,741 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:40,741 INFO  L146                ILogger]: Abstraction has 213 states and 222 transitions.
[2019-05-23 11:26:40,741 INFO  L146                ILogger]: Interpolant automaton has 27 states.
[2019-05-23 11:26:40,741 INFO  L146                ILogger]: Start isEmpty. Operand 213 states and 222 transitions.
[2019-05-23 11:26:40,742 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 83
[2019-05-23 11:26:40,742 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:40,742 INFO  L146                ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-05-23 11:26:40,742 INFO  L146                ILogger]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:40,743 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:40,743 INFO  L146                ILogger]: Analyzing trace with hash 320565901, now seen corresponding path program 2 times
[2019-05-23 11:26:40,743 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:40,743 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:40,744 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:40,744 INFO  L146                ILogger]: Keeping assertion order NOT_INCREMENTALLY
[2019-05-23 11:26:40,744 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:40,755 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:41,138 INFO  L146                ILogger]: Checked inductivity of 57 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:41,139 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:26:41,139 INFO  L146                ILogger]: Switched to mode Z3_FP
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
[2019-05-23 11:26:41,148 INFO  L146                ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2019-05-23 11:26:41,169 INFO  L146                ILogger]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2019-05-23 11:26:41,169 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:41,170 INFO  L146                ILogger]: Trace formula consists of 123 conjuncts, 32 conjunts are in the unsatisfiable core
[2019-05-23 11:26:41,172 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:26:41,354 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12
[2019-05-23 11:26:41,354 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:41,364 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:41,365 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:41,365 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:32, output treesize:28
[2019-05-23 11:26:41,410 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:41,410 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28
[2019-05-23 11:26:41,411 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:41,423 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:41,423 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:41,423 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:44, output treesize:40
[2019-05-23 11:26:41,562 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:41,564 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:41,565 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:41,566 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:41,567 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 37
[2019-05-23 11:26:41,567 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:41,585 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:41,585 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:41,585 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:53, output treesize:49
[2019-05-23 11:26:41,641 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:41,642 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:41,643 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:41,644 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:41,646 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:41,647 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:41,648 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:41,649 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 55
[2019-05-23 11:26:41,649 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:41,663 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:41,664 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2019-05-23 11:26:41,664 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:74, output treesize:76
[2019-05-23 11:26:42,877 INFO  L146                ILogger]: Checked inductivity of 57 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:42,896 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:26:42,896 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 40
[2019-05-23 11:26:42,896 INFO  L146                ILogger]: Interpolant automaton has 40 states
[2019-05-23 11:26:42,897 INFO  L146                ILogger]: Constructing interpolant automaton starting with 40 interpolants.
[2019-05-23 11:26:42,897 INFO  L146                ILogger]: CoverageRelationStatistics Valid=171, Invalid=1389, Unknown=0, NotChecked=0, Total=1560
[2019-05-23 11:26:42,897 INFO  L146                ILogger]: Start difference. First operand 213 states and 222 transitions. Second operand 40 states.
[2019-05-23 11:26:47,740 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:47,740 INFO  L146                ILogger]: Finished difference Result 381 states and 395 transitions.
[2019-05-23 11:26:47,741 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 49 states. 
[2019-05-23 11:26:47,741 INFO  L146                ILogger]: Start accepts. Automaton has 40 states. Word has length 82
[2019-05-23 11:26:47,741 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:47,742 INFO  L146                ILogger]: With dead ends: 381
[2019-05-23 11:26:47,742 INFO  L146                ILogger]: Without dead ends: 359
[2019-05-23 11:26:47,746 INFO  L146                ILogger]: 0 DeclaredPredicates, 147 GetRequests, 63 SyntacticMatches, 1 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1730 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1001, Invalid=6139, Unknown=0, NotChecked=0, Total=7140
[2019-05-23 11:26:47,746 INFO  L146                ILogger]: Start minimizeSevpa. Operand 359 states.
[2019-05-23 11:26:47,757 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 359 to 204.
[2019-05-23 11:26:47,757 INFO  L146                ILogger]: Start removeUnreachable. Operand 204 states.
[2019-05-23 11:26:47,758 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 204 states to 204 states and 212 transitions.
[2019-05-23 11:26:47,758 INFO  L146                ILogger]: Start accepts. Automaton has 204 states and 212 transitions. Word has length 82
[2019-05-23 11:26:47,758 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:47,758 INFO  L146                ILogger]: Abstraction has 204 states and 212 transitions.
[2019-05-23 11:26:47,758 INFO  L146                ILogger]: Interpolant automaton has 40 states.
[2019-05-23 11:26:47,758 INFO  L146                ILogger]: Start isEmpty. Operand 204 states and 212 transitions.
[2019-05-23 11:26:47,759 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 85
[2019-05-23 11:26:47,759 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:47,760 INFO  L146                ILogger]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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]
[2019-05-23 11:26:47,760 INFO  L146                ILogger]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:47,760 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:47,760 INFO  L146                ILogger]: Analyzing trace with hash -1803320726, now seen corresponding path program 4 times
[2019-05-23 11:26:47,760 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:47,760 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:47,761 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:47,761 INFO  L146                ILogger]: Changing assertion order to NOT_INCREMENTALLY
[2019-05-23 11:26:47,761 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:47,773 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:48,040 INFO  L146                ILogger]: Checked inductivity of 59 backedges. 10 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:48,041 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:26:48,041 INFO  L146                ILogger]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-05-23 11:26:48,049 INFO  L146                ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2019-05-23 11:26:48,072 INFO  L146                ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2019-05-23 11:26:48,072 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:48,073 INFO  L146                ILogger]: Trace formula consists of 124 conjuncts, 28 conjunts are in the unsatisfiable core
[2019-05-23 11:26:48,075 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:26:48,183 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12
[2019-05-23 11:26:48,183 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:48,189 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:48,189 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:48,190 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22
[2019-05-23 11:26:48,241 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,242 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 28
[2019-05-23 11:26:48,242 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:48,252 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:48,252 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:48,253 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:38, output treesize:34
[2019-05-23 11:26:48,347 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,348 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,348 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,349 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:48,349 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 37
[2019-05-23 11:26:48,350 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:48,361 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:48,362 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:48,362 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:43
[2019-05-23 11:26:48,406 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,407 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,408 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,408 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,409 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,410 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,411 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:48,411 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 53 treesize of output 52
[2019-05-23 11:26:48,412 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:48,433 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:48,434 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2019-05-23 11:26:48,434 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:59, output treesize:55
[2019-05-23 11:26:48,906 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,909 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,910 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,911 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,911 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:26:48,913 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:48,913 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 48 treesize of output 16
[2019-05-23 11:26:48,913 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:48,916 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:48,916 INFO  L146                ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:48,916 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:51, output treesize:3
[2019-05-23 11:26:48,960 INFO  L146                ILogger]: Checked inductivity of 59 backedges. 10 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:48,979 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:26:48,979 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 20] total 33
[2019-05-23 11:26:48,979 INFO  L146                ILogger]: Interpolant automaton has 33 states
[2019-05-23 11:26:48,979 INFO  L146                ILogger]: Constructing interpolant automaton starting with 33 interpolants.
[2019-05-23 11:26:48,980 INFO  L146                ILogger]: CoverageRelationStatistics Valid=132, Invalid=924, Unknown=0, NotChecked=0, Total=1056
[2019-05-23 11:26:48,980 INFO  L146                ILogger]: Start difference. First operand 204 states and 212 transitions. Second operand 33 states.
[2019-05-23 11:26:52,207 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:52,207 INFO  L146                ILogger]: Finished difference Result 417 states and 432 transitions.
[2019-05-23 11:26:52,207 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 59 states. 
[2019-05-23 11:26:52,207 INFO  L146                ILogger]: Start accepts. Automaton has 33 states. Word has length 84
[2019-05-23 11:26:52,208 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:52,209 INFO  L146                ILogger]: With dead ends: 417
[2019-05-23 11:26:52,209 INFO  L146                ILogger]: Without dead ends: 395
[2019-05-23 11:26:52,212 INFO  L146                ILogger]: 0 DeclaredPredicates, 151 GetRequests, 69 SyntacticMatches, 2 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1965 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=777, Invalid=5865, Unknown=0, NotChecked=0, Total=6642
[2019-05-23 11:26:52,213 INFO  L146                ILogger]: Start minimizeSevpa. Operand 395 states.
[2019-05-23 11:26:52,223 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 395 to 177.
[2019-05-23 11:26:52,223 INFO  L146                ILogger]: Start removeUnreachable. Operand 177 states.
[2019-05-23 11:26:52,223 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 177 states to 177 states and 184 transitions.
[2019-05-23 11:26:52,224 INFO  L146                ILogger]: Start accepts. Automaton has 177 states and 184 transitions. Word has length 84
[2019-05-23 11:26:52,224 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:52,224 INFO  L146                ILogger]: Abstraction has 177 states and 184 transitions.
[2019-05-23 11:26:52,224 INFO  L146                ILogger]: Interpolant automaton has 33 states.
[2019-05-23 11:26:52,224 INFO  L146                ILogger]: Start isEmpty. Operand 177 states and 184 transitions.
[2019-05-23 11:26:52,225 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 89
[2019-05-23 11:26:52,225 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:52,225 INFO  L146                ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-05-23 11:26:52,225 INFO  L146                ILogger]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:52,226 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:52,226 INFO  L146                ILogger]: Analyzing trace with hash 1269405964, now seen corresponding path program 3 times
[2019-05-23 11:26:52,226 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:52,226 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:52,227 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:52,227 INFO  L146                ILogger]: Changing assertion order to NOT_INCREMENTALLY
[2019-05-23 11:26:52,227 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:52,241 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:52,524 INFO  L146                ILogger]: Checked inductivity of 76 backedges. 12 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:52,525 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:26:52,525 INFO  L146                ILogger]: Switched to mode Z3_FP
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
[2019-05-23 11:26:52,534 INFO  L146                ILogger]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2019-05-23 11:26:52,559 INFO  L146                ILogger]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2019-05-23 11:26:52,559 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:52,560 INFO  L146                ILogger]: Trace formula consists of 132 conjuncts, 29 conjunts are in the unsatisfiable core
[2019-05-23 11:26:52,562 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:26:52,638 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12
[2019-05-23 11:26:52,638 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:52,645 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:52,646 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2019-05-23 11:26:52,646 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:26, output treesize:22
[2019-05-23 11:26:52,845 INFO  L146                ILogger]: Checked inductivity of 76 backedges. 12 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:52,864 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:26:52,864 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 26
[2019-05-23 11:26:52,865 INFO  L146                ILogger]: Interpolant automaton has 26 states
[2019-05-23 11:26:52,865 INFO  L146                ILogger]: Constructing interpolant automaton starting with 26 interpolants.
[2019-05-23 11:26:52,865 INFO  L146                ILogger]: CoverageRelationStatistics Valid=74, Invalid=576, Unknown=0, NotChecked=0, Total=650
[2019-05-23 11:26:52,865 INFO  L146                ILogger]: Start difference. First operand 177 states and 184 transitions. Second operand 26 states.
[2019-05-23 11:26:54,291 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:54,291 INFO  L146                ILogger]: Finished difference Result 284 states and 294 transitions.
[2019-05-23 11:26:54,292 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 30 states. 
[2019-05-23 11:26:54,293 INFO  L146                ILogger]: Start accepts. Automaton has 26 states. Word has length 88
[2019-05-23 11:26:54,293 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:54,294 INFO  L146                ILogger]: With dead ends: 284
[2019-05-23 11:26:54,294 INFO  L146                ILogger]: Without dead ends: 262
[2019-05-23 11:26:54,295 INFO  L146                ILogger]: 0 DeclaredPredicates, 128 GetRequests, 77 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 553 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=280, Invalid=2072, Unknown=0, NotChecked=0, Total=2352
[2019-05-23 11:26:54,296 INFO  L146                ILogger]: Start minimizeSevpa. Operand 262 states.
[2019-05-23 11:26:54,306 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 262 to 191.
[2019-05-23 11:26:54,306 INFO  L146                ILogger]: Start removeUnreachable. Operand 191 states.
[2019-05-23 11:26:54,307 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 191 states to 191 states and 198 transitions.
[2019-05-23 11:26:54,307 INFO  L146                ILogger]: Start accepts. Automaton has 191 states and 198 transitions. Word has length 88
[2019-05-23 11:26:54,307 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:54,307 INFO  L146                ILogger]: Abstraction has 191 states and 198 transitions.
[2019-05-23 11:26:54,307 INFO  L146                ILogger]: Interpolant automaton has 26 states.
[2019-05-23 11:26:54,307 INFO  L146                ILogger]: Start isEmpty. Operand 191 states and 198 transitions.
[2019-05-23 11:26:54,308 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 91
[2019-05-23 11:26:54,308 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:54,309 INFO  L146                ILogger]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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]
[2019-05-23 11:26:54,309 INFO  L146                ILogger]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:54,309 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:54,309 INFO  L146                ILogger]: Analyzing trace with hash 1162206665, now seen corresponding path program 5 times
[2019-05-23 11:26:54,309 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:54,309 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:54,310 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:54,310 INFO  L146                ILogger]: Changing assertion order to NOT_INCREMENTALLY
[2019-05-23 11:26:54,310 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:54,321 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:54,879 INFO  L146                ILogger]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:54,879 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:26:54,879 INFO  L146                ILogger]: Switched to mode Z3_FP
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
[2019-05-23 11:26:54,888 INFO  L146                ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1
[2019-05-23 11:26:54,920 INFO  L146                ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2019-05-23 11:26:54,920 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:54,922 INFO  L146                ILogger]: Trace formula consists of 135 conjuncts, 33 conjunts are in the unsatisfiable core
[2019-05-23 11:26:54,923 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:26:55,057 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9
[2019-05-23 11:26:55,057 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:55,061 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:55,061 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:55,061 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13
[2019-05-23 11:26:55,297 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7
[2019-05-23 11:26:55,297 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:55,298 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:26:55,298 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:26:55,299 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3
[2019-05-23 11:26:55,363 INFO  L146                ILogger]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:55,382 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:26:55,382 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 32
[2019-05-23 11:26:55,382 INFO  L146                ILogger]: Interpolant automaton has 32 states
[2019-05-23 11:26:55,383 INFO  L146                ILogger]: Constructing interpolant automaton starting with 32 interpolants.
[2019-05-23 11:26:55,383 INFO  L146                ILogger]: CoverageRelationStatistics Valid=109, Invalid=883, Unknown=0, NotChecked=0, Total=992
[2019-05-23 11:26:55,383 INFO  L146                ILogger]: Start difference. First operand 191 states and 198 transitions. Second operand 32 states.
[2019-05-23 11:26:57,248 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:57,248 INFO  L146                ILogger]: Finished difference Result 329 states and 341 transitions.
[2019-05-23 11:26:57,248 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 66 states. 
[2019-05-23 11:26:57,249 INFO  L146                ILogger]: Start accepts. Automaton has 32 states. Word has length 90
[2019-05-23 11:26:57,249 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:57,251 INFO  L146                ILogger]: With dead ends: 329
[2019-05-23 11:26:57,251 INFO  L146                ILogger]: Without dead ends: 327
[2019-05-23 11:26:57,253 INFO  L146                ILogger]: 0 DeclaredPredicates, 164 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2390 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=999, Invalid=6833, Unknown=0, NotChecked=0, Total=7832
[2019-05-23 11:26:57,253 INFO  L146                ILogger]: Start minimizeSevpa. Operand 327 states.
[2019-05-23 11:26:57,265 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 327 to 221.
[2019-05-23 11:26:57,265 INFO  L146                ILogger]: Start removeUnreachable. Operand 221 states.
[2019-05-23 11:26:57,265 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 221 states to 221 states and 229 transitions.
[2019-05-23 11:26:57,265 INFO  L146                ILogger]: Start accepts. Automaton has 221 states and 229 transitions. Word has length 90
[2019-05-23 11:26:57,266 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:57,266 INFO  L146                ILogger]: Abstraction has 221 states and 229 transitions.
[2019-05-23 11:26:57,266 INFO  L146                ILogger]: Interpolant automaton has 32 states.
[2019-05-23 11:26:57,266 INFO  L146                ILogger]: Start isEmpty. Operand 221 states and 229 transitions.
[2019-05-23 11:26:57,267 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 103
[2019-05-23 11:26:57,267 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:57,267 INFO  L146                ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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]
[2019-05-23 11:26:57,268 INFO  L146                ILogger]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:57,268 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:57,268 INFO  L146                ILogger]: Analyzing trace with hash -1878627077, now seen corresponding path program 4 times
[2019-05-23 11:26:57,268 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:57,268 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:57,269 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:57,269 INFO  L146                ILogger]: Changing assertion order to NOT_INCREMENTALLY
[2019-05-23 11:26:57,269 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:57,278 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:58,057 INFO  L146                ILogger]: Checked inductivity of 126 backedges. 76 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:58,057 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:26:58,057 INFO  L146                ILogger]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2019-05-23 11:26:58,066 INFO  L146                ILogger]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2019-05-23 11:26:58,090 INFO  L146                ILogger]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2019-05-23 11:26:58,090 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:26:58,091 INFO  L146                ILogger]: Trace formula consists of 149 conjuncts, 18 conjunts are in the unsatisfiable core
[2019-05-23 11:26:58,092 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:26:58,592 INFO  L146                ILogger]: Checked inductivity of 126 backedges. 116 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:26:58,611 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:26:58,611 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 35
[2019-05-23 11:26:58,611 INFO  L146                ILogger]: Interpolant automaton has 35 states
[2019-05-23 11:26:58,611 INFO  L146                ILogger]: Constructing interpolant automaton starting with 35 interpolants.
[2019-05-23 11:26:58,612 INFO  L146                ILogger]: CoverageRelationStatistics Valid=208, Invalid=982, Unknown=0, NotChecked=0, Total=1190
[2019-05-23 11:26:58,612 INFO  L146                ILogger]: Start difference. First operand 221 states and 229 transitions. Second operand 35 states.
[2019-05-23 11:26:59,405 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:26:59,405 INFO  L146                ILogger]: Finished difference Result 433 states and 447 transitions.
[2019-05-23 11:26:59,406 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 29 states. 
[2019-05-23 11:26:59,406 INFO  L146                ILogger]: Start accepts. Automaton has 35 states. Word has length 102
[2019-05-23 11:26:59,406 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:26:59,408 INFO  L146                ILogger]: With dead ends: 433
[2019-05-23 11:26:59,408 INFO  L146                ILogger]: Without dead ends: 263
[2019-05-23 11:26:59,409 INFO  L146                ILogger]: 0 DeclaredPredicates, 138 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=521, Invalid=2235, Unknown=0, NotChecked=0, Total=2756
[2019-05-23 11:26:59,410 INFO  L146                ILogger]: Start minimizeSevpa. Operand 263 states.
[2019-05-23 11:26:59,422 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 263 to 245.
[2019-05-23 11:26:59,422 INFO  L146                ILogger]: Start removeUnreachable. Operand 245 states.
[2019-05-23 11:26:59,423 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 245 states to 245 states and 253 transitions.
[2019-05-23 11:26:59,423 INFO  L146                ILogger]: Start accepts. Automaton has 245 states and 253 transitions. Word has length 102
[2019-05-23 11:26:59,423 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:26:59,423 INFO  L146                ILogger]: Abstraction has 245 states and 253 transitions.
[2019-05-23 11:26:59,423 INFO  L146                ILogger]: Interpolant automaton has 35 states.
[2019-05-23 11:26:59,423 INFO  L146                ILogger]: Start isEmpty. Operand 245 states and 253 transitions.
[2019-05-23 11:26:59,424 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 111
[2019-05-23 11:26:59,424 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:26:59,424 INFO  L146                ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-05-23 11:26:59,425 INFO  L146                ILogger]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:26:59,425 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:26:59,425 INFO  L146                ILogger]: Analyzing trace with hash 1840427179, now seen corresponding path program 5 times
[2019-05-23 11:26:59,425 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:26:59,425 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:26:59,426 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:59,426 INFO  L146                ILogger]: Changing assertion order to NOT_INCREMENTALLY
[2019-05-23 11:26:59,426 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:26:59,437 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:27:00,003 WARN  L146                ILogger]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 12
[2019-05-23 11:27:00,560 INFO  L146                ILogger]: Checked inductivity of 143 backedges. 16 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:27:00,560 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:27:00,560 INFO  L146                ILogger]: Switched to mode Z3_FP
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
[2019-05-23 11:27:00,569 INFO  L146                ILogger]: Keeping assertion order INSIDE_LOOP_FIRST1
[2019-05-23 11:27:00,603 INFO  L146                ILogger]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2019-05-23 11:27:00,604 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:27:00,605 INFO  L146                ILogger]: Trace formula consists of 161 conjuncts, 38 conjunts are in the unsatisfiable core
[2019-05-23 11:27:00,607 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:27:00,900 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12
[2019-05-23 11:27:00,900 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:27:00,911 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:27:00,911 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:27:00,912 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:25
[2019-05-23 11:27:00,971 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:27:00,972 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22
[2019-05-23 11:27:00,972 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:27:00,982 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:27:00,982 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:27:00,982 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:32, output treesize:31
[2019-05-23 11:27:01,448 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:27:01,448 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13
[2019-05-23 11:27:01,449 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:27:01,451 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:27:01,451 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:27:01,452 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:7
[2019-05-23 11:27:01,534 INFO  L146                ILogger]: Checked inductivity of 143 backedges. 16 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:27:01,552 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:27:01,552 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 45
[2019-05-23 11:27:01,553 INFO  L146                ILogger]: Interpolant automaton has 45 states
[2019-05-23 11:27:01,553 INFO  L146                ILogger]: Constructing interpolant automaton starting with 45 interpolants.
[2019-05-23 11:27:01,554 INFO  L146                ILogger]: CoverageRelationStatistics Valid=171, Invalid=1809, Unknown=0, NotChecked=0, Total=1980
[2019-05-23 11:27:01,554 INFO  L146                ILogger]: Start difference. First operand 245 states and 253 transitions. Second operand 45 states.
[2019-05-23 11:27:04,987 INFO  L146                ILogger]: Subtrahend was deterministic. Have not used determinization.
[2019-05-23 11:27:04,987 INFO  L146                ILogger]: Finished difference Result 332 states and 343 transitions.
[2019-05-23 11:27:04,987 INFO  L146                ILogger]: Switched to read-only mode: deterministic interpolant automaton has 37 states. 
[2019-05-23 11:27:04,988 INFO  L146                ILogger]: Start accepts. Automaton has 45 states. Word has length 110
[2019-05-23 11:27:04,988 INFO  L146                ILogger]: Finished accepts. some prefix is accepted.
[2019-05-23 11:27:04,989 INFO  L146                ILogger]: With dead ends: 332
[2019-05-23 11:27:04,989 INFO  L146                ILogger]: Without dead ends: 310
[2019-05-23 11:27:04,990 INFO  L146                ILogger]: 0 DeclaredPredicates, 166 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1180 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=699, Invalid=5307, Unknown=0, NotChecked=0, Total=6006
[2019-05-23 11:27:04,990 INFO  L146                ILogger]: Start minimizeSevpa. Operand 310 states.
[2019-05-23 11:27:05,003 INFO  L146                ILogger]: Finished minimizeSevpa. Reduced states from 310 to 259.
[2019-05-23 11:27:05,004 INFO  L146                ILogger]: Start removeUnreachable. Operand 259 states.
[2019-05-23 11:27:05,004 INFO  L146                ILogger]: Finished removeUnreachable. Reduced from 259 states to 259 states and 267 transitions.
[2019-05-23 11:27:05,004 INFO  L146                ILogger]: Start accepts. Automaton has 259 states and 267 transitions. Word has length 110
[2019-05-23 11:27:05,005 INFO  L146                ILogger]: Finished accepts. word is rejected.
[2019-05-23 11:27:05,005 INFO  L146                ILogger]: Abstraction has 259 states and 267 transitions.
[2019-05-23 11:27:05,005 INFO  L146                ILogger]: Interpolant automaton has 45 states.
[2019-05-23 11:27:05,005 INFO  L146                ILogger]: Start isEmpty. Operand 259 states and 267 transitions.
[2019-05-23 11:27:05,006 INFO  L146                ILogger]: Finished isEmpty. Found accepting run of length 113
[2019-05-23 11:27:05,006 INFO  L146                ILogger]: Found error trace
[2019-05-23 11:27:05,006 INFO  L146                ILogger]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2019-05-23 11:27:05,006 INFO  L146                ILogger]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]===
[2019-05-23 11:27:05,007 INFO  L146                ILogger]: Initialized classic predicate unifier
[2019-05-23 11:27:05,007 INFO  L146                ILogger]: Analyzing trace with hash -1686732024, now seen corresponding path program 6 times
[2019-05-23 11:27:05,007 INFO  L146                ILogger]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2019-05-23 11:27:05,007 INFO  L146                ILogger]: Using refinement strategy CamelRefinementStrategy
[2019-05-23 11:27:05,008 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:27:05,008 INFO  L146                ILogger]: Changing assertion order to NOT_INCREMENTALLY
[2019-05-23 11:27:05,015 INFO  L146                ILogger]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2019-05-23 11:27:05,028 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:27:05,505 INFO  L146                ILogger]: Checked inductivity of 145 backedges. 18 proven. 127 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2019-05-23 11:27:05,505 INFO  L146                ILogger]: The current sequences of interpolants are not accepted, trying to find more.
[2019-05-23 11:27:05,505 INFO  L146                ILogger]: Switched to mode Z3_FP
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
[2019-05-23 11:27:05,516 INFO  L146                ILogger]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2019-05-23 11:27:05,558 INFO  L146                ILogger]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2019-05-23 11:27:05,558 INFO  L146                ILogger]: Conjunction of SSA is unsat
[2019-05-23 11:27:05,560 INFO  L146                ILogger]: Trace formula consists of 164 conjuncts, 32 conjunts are in the unsatisfiable core
[2019-05-23 11:27:05,562 INFO  L146                ILogger]: Computing forward predicates...
[2019-05-23 11:27:05,682 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12
[2019-05-23 11:27:05,682 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:27:05,690 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:27:05,690 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:27:05,690 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22
[2019-05-23 11:27:05,800 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:27:05,803 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25
[2019-05-23 11:27:05,804 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:27:05,816 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:27:05,816 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:27:05,816 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:19
[2019-05-23 11:27:05,853 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:27:05,853 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 25
[2019-05-23 11:27:05,854 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:27:05,864 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:27:05,865 INFO  L146                ILogger]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars,  End of recursive call: 1 dim-0 vars,  and 1 xjuncts.
[2019-05-23 11:27:05,865 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 2 variables, input treesize:35, output treesize:31
[2019-05-23 11:27:06,499 INFO  L146                ILogger]: detected not equals via solver
[2019-05-23 11:27:06,500 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:27:06,500 INFO  L146                ILogger]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10
[2019-05-23 11:27:06,501 INFO  L146                ILogger]: Start of recursive call 2:  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:27:06,505 INFO  L146                ILogger]: treesize reduction 0, result has 100.0 percent of original size
[2019-05-23 11:27:06,505 INFO  L146                ILogger]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars,  End of recursive call:  and 1 xjuncts.
[2019-05-23 11:27:06,505 INFO  L146                ILogger]: Needed 2 recursive calls to eliminate 3 variables, input treesize:32, output treesize:7
[2019-05-23 11:27:06,609 INFO  L146                ILogger]: Checked inductivity of 145 backedges. 60 proven. 81 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked.
[2019-05-23 11:27:06,628 INFO  L146                ILogger]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2019-05-23 11:27:06,628 INFO  L146                ILogger]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 40
[2019-05-23 11:27:06,629 INFO  L146                ILogger]: Interpolant automaton has 40 states
[2019-05-23 11:27:06,629 INFO  L146                ILogger]: Constructing interpolant automaton starting with 40 interpolants.
[2019-05-23 11:27:06,629 INFO  L146                ILogger]: CoverageRelationStatistics Valid=115, Invalid=1445, Unknown=0, NotChecked=0, Total=1560
[2019-05-23 11:27:06,630 INFO  L146                ILogger]: Start difference. First operand 259 states and 267 transitions. Second operand 40 states.
[2019-05-23 11:27:08,770 WARN  L146                ILogger]: Spent 292.00 ms on a formula simplification that was a NOOP. DAG size: 32
[2019-05-23 11:27:09,151 WARN  L146                ILogger]: Spent 281.00 ms on a formula simplification that was a NOOP. DAG size: 34
[2019-05-23 11:27:09,768 WARN  L146                ILogger]: Spent 286.00 ms on a formula simplification that was a NOOP. DAG size: 35
[2019-05-23 11:27:10,309 WARN  L146                ILogger]: Spent 293.00 ms on a formula simplification that was a NOOP. DAG size: 36
[2019-05-23 11:27:11,041 WARN  L146                ILogger]: Spent 567.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36
[2019-05-23 11:27:11,679 WARN  L146                ILogger]: Spent 559.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34
[2019-05-23 11:27:12,504 WARN  L146                ILogger]: Spent 563.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36
[2019-05-23 11:27:13,141 WARN  L146                ILogger]: Spent 341.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 37
[2019-05-23 11:27:13,555 WARN  L146                ILogger]: Spent 334.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 37
[2019-05-23 11:27:14,174 WARN  L146                ILogger]: Spent 562.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 34