java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -s ../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf -i ../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-sophisticated.bpl


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This is Ultimate 0.1.23-2eb0a67
[2018-10-03 09:18:32,891 INFO  L170        SettingsManager]: Resetting all preferences to default values...
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[2018-10-03 09:18:32,955 INFO  L174        SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2018-10-03 09:18:32,966 INFO  L98         SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/pu-bench/svcomp-Reach-32bit-Automizer_Default_PUPT.epf
[2018-10-03 09:18:32,990 INFO  L110        SettingsManager]: Loading preferences was successful
[2018-10-03 09:18:32,990 INFO  L112        SettingsManager]: Preferences different from defaults after loading the file:
[2018-10-03 09:18:32,991 INFO  L131        SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-10-03 09:18:32,992 INFO  L133        SettingsManager]:  * to procedures, called more than once=true
[2018-10-03 09:18:32,993 INFO  L131        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-10-03 09:18:32,993 INFO  L133        SettingsManager]:  * Create parallel compositions if possible=false
[2018-10-03 09:18:32,994 INFO  L133        SettingsManager]:  * Use SBE=true
[2018-10-03 09:18:32,994 INFO  L131        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-10-03 09:18:32,994 INFO  L133        SettingsManager]:  * sizeof long=4
[2018-10-03 09:18:32,994 INFO  L133        SettingsManager]:  * Overapproximate operations on floating types=true
[2018-10-03 09:18:32,995 INFO  L133        SettingsManager]:  * sizeof POINTER=4
[2018-10-03 09:18:32,996 INFO  L133        SettingsManager]:  * Check division by zero=IGNORE
[2018-10-03 09:18:32,996 INFO  L133        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2018-10-03 09:18:32,996 INFO  L133        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-10-03 09:18:32,996 INFO  L133        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2018-10-03 09:18:32,996 INFO  L133        SettingsManager]:  * sizeof long double=12
[2018-10-03 09:18:32,997 INFO  L133        SettingsManager]:  * Check if freed pointer was valid=false
[2018-10-03 09:18:32,997 INFO  L133        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2018-10-03 09:18:32,997 INFO  L131        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-10-03 09:18:32,997 INFO  L133        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2018-10-03 09:18:32,998 INFO  L133        SettingsManager]:  * To the following directory=./dump/
[2018-10-03 09:18:32,999 INFO  L133        SettingsManager]:  * SMT solver=External_DefaultMode
[2018-10-03 09:18:32,999 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-03 09:18:32,999 INFO  L131        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-10-03 09:18:32,999 INFO  L133        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2018-10-03 09:18:33,000 INFO  L133        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-10-03 09:18:33,000 INFO  L133        SettingsManager]:  * Trace refinement strategy=CAMEL
[2018-10-03 09:18:33,000 INFO  L133        SettingsManager]:  * SMT solver=External_ModelsAndUnsatCoreMode
[2018-10-03 09:18:33,000 INFO  L133        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-10-03 09:18:33,000 INFO  L133        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-10-03 09:18:33,001 INFO  L133        SettingsManager]:  * Use predicate trie based predicate unification=true
[2018-10-03 09:18:33,061 INFO  L81    nceAwareModelManager]: Repository-Root is: /tmp
[2018-10-03 09:18:33,076 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-10-03 09:18:33,081 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-10-03 09:18:33,083 INFO  L271        PluginConnector]: Initializing Boogie PL CUP Parser...
[2018-10-03 09:18:33,083 INFO  L276        PluginConnector]: Boogie PL CUP Parser initialized
[2018-10-03 09:18:33,084 INFO  L418   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-sophisticated.bpl
[2018-10-03 09:18:33,085 INFO  L111           BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/Luxembourg-sophisticated.bpl'
[2018-10-03 09:18:33,127 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-10-03 09:18:33,130 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2018-10-03 09:18:33,131 INFO  L113        PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-10-03 09:18:33,132 INFO  L271        PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-10-03 09:18:33,132 INFO  L276        PluginConnector]: Boogie Procedure Inliner initialized
[2018-10-03 09:18:33,152 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:18:33" (1/1) ...
[2018-10-03 09:18:33,165 INFO  L185        PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:18:33" (1/1) ...
[2018-10-03 09:18:33,170 WARN  L165                Inliner]: Program contained no entry procedure!
[2018-10-03 09:18:33,170 WARN  L168                Inliner]: Missing entry procedures: [ULTIMATE.start]
[2018-10-03 09:18:33,170 WARN  L175                Inliner]: Fallback enabled. All procedures will be processed.
[2018-10-03 09:18:33,172 INFO  L132        PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-10-03 09:18:33,173 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-10-03 09:18:33,173 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2018-10-03 09:18:33,173 INFO  L276        PluginConnector]: Boogie Preprocessor initialized
[2018-10-03 09:18:33,184 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:18:33" (1/1) ...
[2018-10-03 09:18:33,184 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:18:33" (1/1) ...
[2018-10-03 09:18:33,185 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:18:33" (1/1) ...
[2018-10-03 09:18:33,185 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:18:33" (1/1) ...
[2018-10-03 09:18:33,189 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:18:33" (1/1) ...
[2018-10-03 09:18:33,194 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:18:33" (1/1) ...
[2018-10-03 09:18:33,195 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:18:33" (1/1) ...
[2018-10-03 09:18:33,197 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-10-03 09:18:33,197 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-10-03 09:18:33,197 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2018-10-03 09:18:33,197 INFO  L276        PluginConnector]: RCFGBuilder initialized
[2018-10-03 09:18:33,199 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:18:33" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-10-03 09:18:33,266 INFO  L124     BoogieDeclarations]: Specification and implementation of procedure main given in one single declaration
[2018-10-03 09:18:33,267 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2018-10-03 09:18:33,267 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2018-10-03 09:18:33,511 INFO  L337             CfgBuilder]: Using library mode
[2018-10-03 09:18:33,511 INFO  L202        PluginConnector]: Adding new model Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:18:33 BoogieIcfgContainer
[2018-10-03 09:18:33,512 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-10-03 09:18:33,513 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-10-03 09:18:33,513 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2018-10-03 09:18:33,516 INFO  L276        PluginConnector]: TraceAbstraction initialized
[2018-10-03 09:18:33,517 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 03.10 09:18:33" (1/2) ...
[2018-10-03 09:18:33,518 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138a4ced and model type Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 09:18:33, skipping insertion in model container
[2018-10-03 09:18:33,518 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 09:18:33" (2/2) ...
[2018-10-03 09:18:33,520 INFO  L112   eAbstractionObserver]: Analyzing ICFG Luxembourg-sophisticated.bpl
[2018-10-03 09:18:33,530 INFO  L136   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-10-03 09:18:33,538 INFO  L148   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-10-03 09:18:33,592 INFO  L133   ementStrategyFactory]: Using default assertion order modulation
[2018-10-03 09:18:33,593 INFO  L381      AbstractCegarLoop]: Interprodecural is true
[2018-10-03 09:18:33,593 INFO  L382      AbstractCegarLoop]: Hoare is true
[2018-10-03 09:18:33,593 INFO  L383      AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-10-03 09:18:33,593 INFO  L384      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-10-03 09:18:33,593 INFO  L385      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-10-03 09:18:33,594 INFO  L386      AbstractCegarLoop]: Difference is false
[2018-10-03 09:18:33,594 INFO  L387      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-10-03 09:18:33,594 INFO  L392      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-10-03 09:18:33,610 INFO  L276                IsEmpty]: Start isEmpty. Operand 7 states.
[2018-10-03 09:18:33,626 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2018-10-03 09:18:33,627 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:33,632 INFO  L375         BasicCegarLoop]: trace histogram [1, 1, 1]
[2018-10-03 09:18:33,634 INFO  L423      AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:33,642 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:33,642 INFO  L82        PathProgramCache]: Analyzing trace with hash 30240, now seen corresponding path program 1 times
[2018-10-03 09:18:33,644 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:33,645 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:33,705 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:33,705 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:33,705 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:33,740 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:33,840 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:33,843 INFO  L312   seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-10-03 09:18:33,844 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2
[2018-10-03 09:18:33,849 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-10-03 09:18:33,864 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-10-03 09:18:33,865 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:33,868 INFO  L87              Difference]: Start difference. First operand 7 states. Second operand 3 states.
[2018-10-03 09:18:33,934 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:33,935 INFO  L93              Difference]: Finished difference Result 15 states and 18 transitions.
[2018-10-03 09:18:33,936 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. 
[2018-10-03 09:18:33,937 INFO  L78                 Accepts]: Start accepts. Automaton has 3 states. Word has length 3
[2018-10-03 09:18:33,938 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:33,951 INFO  L225             Difference]: With dead ends: 15
[2018-10-03 09:18:33,952 INFO  L226             Difference]: Without dead ends: 7
[2018-10-03 09:18:33,955 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 1
[2018-10-03 09:18:33,979 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 7 states.
[2018-10-03 09:18:33,998 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 6.
[2018-10-03 09:18:34,000 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2018-10-03 09:18:34,000 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 7 transitions.
[2018-10-03 09:18:34,003 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states and 7 transitions. Word has length 3
[2018-10-03 09:18:34,003 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:34,003 INFO  L480      AbstractCegarLoop]: Abstraction has 6 states and 7 transitions.
[2018-10-03 09:18:34,003 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-10-03 09:18:34,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 6 states and 7 transitions.
[2018-10-03 09:18:34,004 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2018-10-03 09:18:34,004 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:34,005 INFO  L375         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2018-10-03 09:18:34,005 INFO  L423      AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:34,005 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:34,005 INFO  L82        PathProgramCache]: Analyzing trace with hash 28755491, now seen corresponding path program 1 times
[2018-10-03 09:18:34,006 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:34,006 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:34,007 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:34,007 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:34,007 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:34,015 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:34,137 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:34,138 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:34,138 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:34,153 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:34,182 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:34,195 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:34,246 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:34,267 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:34,267 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3
[2018-10-03 09:18:34,268 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-03 09:18:34,268 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-03 09:18:34,268 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:34,269 INFO  L87              Difference]: Start difference. First operand 6 states and 7 transitions. Second operand 4 states.
[2018-10-03 09:18:34,318 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:34,318 INFO  L93              Difference]: Finished difference Result 11 states and 14 transitions.
[2018-10-03 09:18:34,319 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-03 09:18:34,319 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 5
[2018-10-03 09:18:34,319 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:34,320 INFO  L225             Difference]: With dead ends: 11
[2018-10-03 09:18:34,320 INFO  L226             Difference]: Without dead ends: 9
[2018-10-03 09:18:34,321 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 2
[2018-10-03 09:18:34,321 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2018-10-03 09:18:34,323 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8.
[2018-10-03 09:18:34,323 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2018-10-03 09:18:34,323 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions.
[2018-10-03 09:18:34,324 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 5
[2018-10-03 09:18:34,324 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:34,324 INFO  L480      AbstractCegarLoop]: Abstraction has 8 states and 10 transitions.
[2018-10-03 09:18:34,324 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-03 09:18:34,324 INFO  L276                IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions.
[2018-10-03 09:18:34,325 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2018-10-03 09:18:34,325 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:34,325 INFO  L375         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1]
[2018-10-03 09:18:34,325 INFO  L423      AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:34,325 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:34,326 INFO  L82        PathProgramCache]: Analyzing trace with hash 28757413, now seen corresponding path program 1 times
[2018-10-03 09:18:34,326 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:34,326 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:34,327 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:34,327 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:34,327 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:34,331 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:34,367 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:34,367 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:34,367 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:34,377 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:34,389 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:34,391 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:34,419 INFO  L134       CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:34,439 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:34,439 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3
[2018-10-03 09:18:34,439 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-10-03 09:18:34,440 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-10-03 09:18:34,440 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:34,440 INFO  L87              Difference]: Start difference. First operand 8 states and 10 transitions. Second operand 4 states.
[2018-10-03 09:18:34,464 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:34,464 INFO  L93              Difference]: Finished difference Result 12 states and 15 transitions.
[2018-10-03 09:18:34,465 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. 
[2018-10-03 09:18:34,465 INFO  L78                 Accepts]: Start accepts. Automaton has 4 states. Word has length 5
[2018-10-03 09:18:34,465 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:34,466 INFO  L225             Difference]: With dead ends: 12
[2018-10-03 09:18:34,466 INFO  L226             Difference]: Without dead ends: 10
[2018-10-03 09:18:34,466 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 2
[2018-10-03 09:18:34,467 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2018-10-03 09:18:34,468 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 8.
[2018-10-03 09:18:34,469 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2018-10-03 09:18:34,469 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 10 transitions.
[2018-10-03 09:18:34,469 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states and 10 transitions. Word has length 5
[2018-10-03 09:18:34,470 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:34,470 INFO  L480      AbstractCegarLoop]: Abstraction has 8 states and 10 transitions.
[2018-10-03 09:18:34,470 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-10-03 09:18:34,470 INFO  L276                IsEmpty]: Start isEmpty. Operand 8 states and 10 transitions.
[2018-10-03 09:18:34,471 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2018-10-03 09:18:34,471 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:34,471 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1]
[2018-10-03 09:18:34,471 INFO  L423      AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:34,472 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:34,472 INFO  L82        PathProgramCache]: Analyzing trace with hash 1863917926, now seen corresponding path program 2 times
[2018-10-03 09:18:34,472 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:34,472 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:34,474 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:34,474 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:34,474 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:34,479 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:34,524 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:34,525 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:34,525 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:34,537 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:34,546 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:34,547 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:34,548 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:34,598 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:34,618 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:34,618 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4
[2018-10-03 09:18:34,618 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-10-03 09:18:34,619 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-10-03 09:18:34,619 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:34,619 INFO  L87              Difference]: Start difference. First operand 8 states and 10 transitions. Second operand 5 states.
[2018-10-03 09:18:34,654 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:34,654 INFO  L93              Difference]: Finished difference Result 14 states and 18 transitions.
[2018-10-03 09:18:34,655 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2018-10-03 09:18:34,655 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 7
[2018-10-03 09:18:34,655 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:34,656 INFO  L225             Difference]: With dead ends: 14
[2018-10-03 09:18:34,656 INFO  L226             Difference]: Without dead ends: 12
[2018-10-03 09:18:34,656 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 3
[2018-10-03 09:18:34,656 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2018-10-03 09:18:34,659 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10.
[2018-10-03 09:18:34,659 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2018-10-03 09:18:34,660 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions.
[2018-10-03 09:18:34,660 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 7
[2018-10-03 09:18:34,660 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:34,660 INFO  L480      AbstractCegarLoop]: Abstraction has 10 states and 13 transitions.
[2018-10-03 09:18:34,660 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-10-03 09:18:34,661 INFO  L276                IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions.
[2018-10-03 09:18:34,661 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2018-10-03 09:18:34,661 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:34,661 INFO  L375         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1]
[2018-10-03 09:18:34,662 INFO  L423      AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:34,662 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:34,662 INFO  L82        PathProgramCache]: Analyzing trace with hash 1863919848, now seen corresponding path program 1 times
[2018-10-03 09:18:34,662 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:34,663 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:34,664 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:34,664 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:34,664 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:34,669 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:34,897 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:34,898 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:34,898 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:34,913 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:34,933 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:34,935 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:35,025 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:35,046 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:35,046 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4
[2018-10-03 09:18:35,046 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-10-03 09:18:35,047 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-10-03 09:18:35,047 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:35,047 INFO  L87              Difference]: Start difference. First operand 10 states and 13 transitions. Second operand 5 states.
[2018-10-03 09:18:35,102 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:35,102 INFO  L93              Difference]: Finished difference Result 14 states and 18 transitions.
[2018-10-03 09:18:35,103 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2018-10-03 09:18:35,103 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 7
[2018-10-03 09:18:35,103 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:35,104 INFO  L225             Difference]: With dead ends: 14
[2018-10-03 09:18:35,104 INFO  L226             Difference]: Without dead ends: 12
[2018-10-03 09:18:35,104 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 3
[2018-10-03 09:18:35,105 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2018-10-03 09:18:35,107 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 10.
[2018-10-03 09:18:35,108 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2018-10-03 09:18:35,108 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions.
[2018-10-03 09:18:35,109 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 7
[2018-10-03 09:18:35,109 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:35,109 INFO  L480      AbstractCegarLoop]: Abstraction has 10 states and 13 transitions.
[2018-10-03 09:18:35,109 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-10-03 09:18:35,109 INFO  L276                IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions.
[2018-10-03 09:18:35,110 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2018-10-03 09:18:35,110 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:35,110 INFO  L375         BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1]
[2018-10-03 09:18:35,111 INFO  L423      AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:35,111 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:35,111 INFO  L82        PathProgramCache]: Analyzing trace with hash 1865764968, now seen corresponding path program 2 times
[2018-10-03 09:18:35,111 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:35,111 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:35,112 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:35,113 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:35,114 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:35,120 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:35,194 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:35,194 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:35,194 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:35,203 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:35,222 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:35,223 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:35,224 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:35,261 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:35,291 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:35,291 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4
[2018-10-03 09:18:35,292 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-10-03 09:18:35,292 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-10-03 09:18:35,292 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:35,293 INFO  L87              Difference]: Start difference. First operand 10 states and 13 transitions. Second operand 5 states.
[2018-10-03 09:18:35,330 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:35,330 INFO  L93              Difference]: Finished difference Result 17 states and 22 transitions.
[2018-10-03 09:18:35,333 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2018-10-03 09:18:35,333 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 7
[2018-10-03 09:18:35,333 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:35,334 INFO  L225             Difference]: With dead ends: 17
[2018-10-03 09:18:35,334 INFO  L226             Difference]: Without dead ends: 15
[2018-10-03 09:18:35,335 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 3
[2018-10-03 09:18:35,335 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2018-10-03 09:18:35,338 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12.
[2018-10-03 09:18:35,338 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2018-10-03 09:18:35,339 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions.
[2018-10-03 09:18:35,339 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 7
[2018-10-03 09:18:35,339 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:35,339 INFO  L480      AbstractCegarLoop]: Abstraction has 12 states and 16 transitions.
[2018-10-03 09:18:35,339 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-10-03 09:18:35,340 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions.
[2018-10-03 09:18:35,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2018-10-03 09:18:35,340 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:35,340 INFO  L375         BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1]
[2018-10-03 09:18:35,340 INFO  L423      AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:35,341 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:35,341 INFO  L82        PathProgramCache]: Analyzing trace with hash 1865766890, now seen corresponding path program 2 times
[2018-10-03 09:18:35,341 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:35,341 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:35,342 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:35,342 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:35,342 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:35,347 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:35,390 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:35,391 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:35,391 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:35,401 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:35,406 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:35,406 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:35,407 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:35,556 INFO  L134       CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:35,577 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:35,577 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4
[2018-10-03 09:18:35,578 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-10-03 09:18:35,578 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-10-03 09:18:35,578 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:35,578 INFO  L87              Difference]: Start difference. First operand 12 states and 16 transitions. Second operand 5 states.
[2018-10-03 09:18:35,612 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:35,612 INFO  L93              Difference]: Finished difference Result 16 states and 21 transitions.
[2018-10-03 09:18:35,613 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. 
[2018-10-03 09:18:35,613 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 7
[2018-10-03 09:18:35,614 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:35,614 INFO  L225             Difference]: With dead ends: 16
[2018-10-03 09:18:35,614 INFO  L226             Difference]: Without dead ends: 14
[2018-10-03 09:18:35,615 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 3
[2018-10-03 09:18:35,615 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2018-10-03 09:18:35,618 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 10.
[2018-10-03 09:18:35,619 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2018-10-03 09:18:35,619 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 13 transitions.
[2018-10-03 09:18:35,619 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states and 13 transitions. Word has length 7
[2018-10-03 09:18:35,620 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:35,620 INFO  L480      AbstractCegarLoop]: Abstraction has 10 states and 13 transitions.
[2018-10-03 09:18:35,620 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-10-03 09:18:35,620 INFO  L276                IsEmpty]: Start isEmpty. Operand 10 states and 13 transitions.
[2018-10-03 09:18:35,620 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2018-10-03 09:18:35,620 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:35,620 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1]
[2018-10-03 09:18:35,621 INFO  L423      AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:35,621 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:35,621 INFO  L82        PathProgramCache]: Analyzing trace with hash 223459305, now seen corresponding path program 3 times
[2018-10-03 09:18:35,621 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:35,621 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:35,622 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:35,622 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:35,622 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:35,630 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:35,691 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:35,691 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:35,691 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:35,702 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:35,713 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2018-10-03 09:18:35,714 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:35,715 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:35,751 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:35,772 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:35,772 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2018-10-03 09:18:35,773 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-10-03 09:18:35,773 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-10-03 09:18:35,773 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:35,773 INFO  L87              Difference]: Start difference. First operand 10 states and 13 transitions. Second operand 6 states.
[2018-10-03 09:18:35,842 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:35,842 INFO  L93              Difference]: Finished difference Result 19 states and 25 transitions.
[2018-10-03 09:18:35,843 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-10-03 09:18:35,843 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 9
[2018-10-03 09:18:35,843 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:35,843 INFO  L225             Difference]: With dead ends: 19
[2018-10-03 09:18:35,844 INFO  L226             Difference]: Without dead ends: 17
[2018-10-03 09:18:35,844 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 4
[2018-10-03 09:18:35,844 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2018-10-03 09:18:35,849 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14.
[2018-10-03 09:18:35,849 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2018-10-03 09:18:35,850 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions.
[2018-10-03 09:18:35,850 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 9
[2018-10-03 09:18:35,850 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:35,850 INFO  L480      AbstractCegarLoop]: Abstraction has 14 states and 19 transitions.
[2018-10-03 09:18:35,850 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-10-03 09:18:35,850 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions.
[2018-10-03 09:18:35,851 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2018-10-03 09:18:35,851 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:35,851 INFO  L375         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1]
[2018-10-03 09:18:35,852 INFO  L423      AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:35,852 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:35,852 INFO  L82        PathProgramCache]: Analyzing trace with hash 223461227, now seen corresponding path program 3 times
[2018-10-03 09:18:35,852 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:35,852 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:35,853 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:35,853 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:35,853 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:35,858 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:35,902 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:35,902 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:35,902 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:35,913 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:35,920 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2018-10-03 09:18:35,920 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:35,921 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:35,959 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:35,981 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:35,982 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2018-10-03 09:18:35,982 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-10-03 09:18:35,982 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-10-03 09:18:35,982 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:35,983 INFO  L87              Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 6 states.
[2018-10-03 09:18:36,151 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:36,151 INFO  L93              Difference]: Finished difference Result 18 states and 24 transitions.
[2018-10-03 09:18:36,152 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-10-03 09:18:36,152 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 9
[2018-10-03 09:18:36,152 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:36,153 INFO  L225             Difference]: With dead ends: 18
[2018-10-03 09:18:36,153 INFO  L226             Difference]: Without dead ends: 16
[2018-10-03 09:18:36,153 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 4
[2018-10-03 09:18:36,153 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2018-10-03 09:18:36,156 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12.
[2018-10-03 09:18:36,156 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2018-10-03 09:18:36,157 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions.
[2018-10-03 09:18:36,157 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 9
[2018-10-03 09:18:36,158 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:36,158 INFO  L480      AbstractCegarLoop]: Abstraction has 12 states and 16 transitions.
[2018-10-03 09:18:36,158 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-10-03 09:18:36,158 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions.
[2018-10-03 09:18:36,158 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2018-10-03 09:18:36,159 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:36,159 INFO  L375         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1]
[2018-10-03 09:18:36,159 INFO  L423      AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:36,159 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:36,160 INFO  L82        PathProgramCache]: Analyzing trace with hash 225306347, now seen corresponding path program 4 times
[2018-10-03 09:18:36,160 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:36,160 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:36,161 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:36,161 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:36,161 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:36,165 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:36,494 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:36,494 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:36,494 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:36,502 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:36,514 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:36,514 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:36,516 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:36,538 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:36,559 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:36,560 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2018-10-03 09:18:36,560 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-10-03 09:18:36,560 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-10-03 09:18:36,560 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:36,561 INFO  L87              Difference]: Start difference. First operand 12 states and 16 transitions. Second operand 6 states.
[2018-10-03 09:18:36,598 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:36,599 INFO  L93              Difference]: Finished difference Result 19 states and 25 transitions.
[2018-10-03 09:18:36,599 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-10-03 09:18:36,599 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 9
[2018-10-03 09:18:36,599 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:36,600 INFO  L225             Difference]: With dead ends: 19
[2018-10-03 09:18:36,600 INFO  L226             Difference]: Without dead ends: 17
[2018-10-03 09:18:36,600 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 4
[2018-10-03 09:18:36,601 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2018-10-03 09:18:36,604 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 14.
[2018-10-03 09:18:36,604 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2018-10-03 09:18:36,605 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions.
[2018-10-03 09:18:36,605 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 9
[2018-10-03 09:18:36,605 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:36,606 INFO  L480      AbstractCegarLoop]: Abstraction has 14 states and 19 transitions.
[2018-10-03 09:18:36,606 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-10-03 09:18:36,606 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions.
[2018-10-03 09:18:36,606 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2018-10-03 09:18:36,606 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:36,607 INFO  L375         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1]
[2018-10-03 09:18:36,607 INFO  L423      AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:36,607 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:36,607 INFO  L82        PathProgramCache]: Analyzing trace with hash 225308269, now seen corresponding path program 5 times
[2018-10-03 09:18:36,607 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:36,608 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:36,608 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:36,609 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:36,609 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:36,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:36,665 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:36,665 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:36,665 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:36,673 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:36,682 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2018-10-03 09:18:36,682 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:36,683 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:36,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:36,742 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:36,742 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2018-10-03 09:18:36,743 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-10-03 09:18:36,743 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-10-03 09:18:36,743 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:36,743 INFO  L87              Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 6 states.
[2018-10-03 09:18:36,764 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:36,764 INFO  L93              Difference]: Finished difference Result 18 states and 24 transitions.
[2018-10-03 09:18:36,765 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-10-03 09:18:36,766 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 9
[2018-10-03 09:18:36,766 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:36,767 INFO  L225             Difference]: With dead ends: 18
[2018-10-03 09:18:36,767 INFO  L226             Difference]: Without dead ends: 16
[2018-10-03 09:18:36,767 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 4
[2018-10-03 09:18:36,767 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2018-10-03 09:18:36,771 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12.
[2018-10-03 09:18:36,771 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2018-10-03 09:18:36,772 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions.
[2018-10-03 09:18:36,772 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 9
[2018-10-03 09:18:36,772 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:36,772 INFO  L480      AbstractCegarLoop]: Abstraction has 12 states and 16 transitions.
[2018-10-03 09:18:36,772 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-10-03 09:18:36,773 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions.
[2018-10-03 09:18:36,773 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2018-10-03 09:18:36,773 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:36,773 INFO  L375         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1]
[2018-10-03 09:18:36,774 INFO  L423      AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:36,774 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:36,774 INFO  L82        PathProgramCache]: Analyzing trace with hash 1998466667, now seen corresponding path program 6 times
[2018-10-03 09:18:36,774 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:36,774 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:36,775 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:36,775 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:36,775 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:36,783 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:36,828 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:36,829 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:36,829 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:36,839 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:18:36,878 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s)
[2018-10-03 09:18:36,879 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:36,880 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:37,026 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:37,047 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:37,047 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2018-10-03 09:18:37,047 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-10-03 09:18:37,048 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-10-03 09:18:37,048 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:37,048 INFO  L87              Difference]: Start difference. First operand 12 states and 16 transitions. Second operand 6 states.
[2018-10-03 09:18:37,077 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:37,077 INFO  L93              Difference]: Finished difference Result 23 states and 31 transitions.
[2018-10-03 09:18:37,078 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-10-03 09:18:37,078 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 9
[2018-10-03 09:18:37,078 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:37,079 INFO  L225             Difference]: With dead ends: 23
[2018-10-03 09:18:37,079 INFO  L226             Difference]: Without dead ends: 21
[2018-10-03 09:18:37,080 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4
[2018-10-03 09:18:37,080 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2018-10-03 09:18:37,087 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16.
[2018-10-03 09:18:37,087 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2018-10-03 09:18:37,088 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions.
[2018-10-03 09:18:37,088 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 9
[2018-10-03 09:18:37,088 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:37,088 INFO  L480      AbstractCegarLoop]: Abstraction has 16 states and 22 transitions.
[2018-10-03 09:18:37,089 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-10-03 09:18:37,089 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions.
[2018-10-03 09:18:37,090 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2018-10-03 09:18:37,090 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:37,090 INFO  L375         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1]
[2018-10-03 09:18:37,090 INFO  L423      AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:37,090 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:37,090 INFO  L82        PathProgramCache]: Analyzing trace with hash 1998468589, now seen corresponding path program 7 times
[2018-10-03 09:18:37,091 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:37,091 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:37,091 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:37,092 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:37,093 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:37,096 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:37,162 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:37,162 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:37,163 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:37,170 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:37,174 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:37,176 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:37,195 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:37,216 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:37,216 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2018-10-03 09:18:37,216 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-10-03 09:18:37,217 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-10-03 09:18:37,217 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:37,217 INFO  L87              Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 6 states.
[2018-10-03 09:18:37,252 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:37,252 INFO  L93              Difference]: Finished difference Result 23 states and 31 transitions.
[2018-10-03 09:18:37,252 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-10-03 09:18:37,253 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 9
[2018-10-03 09:18:37,253 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:37,253 INFO  L225             Difference]: With dead ends: 23
[2018-10-03 09:18:37,253 INFO  L226             Difference]: Without dead ends: 21
[2018-10-03 09:18:37,254 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 4
[2018-10-03 09:18:37,254 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2018-10-03 09:18:37,259 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 14.
[2018-10-03 09:18:37,259 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2018-10-03 09:18:37,259 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions.
[2018-10-03 09:18:37,260 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 9
[2018-10-03 09:18:37,260 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:37,260 INFO  L480      AbstractCegarLoop]: Abstraction has 14 states and 19 transitions.
[2018-10-03 09:18:37,260 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-10-03 09:18:37,260 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions.
[2018-10-03 09:18:37,261 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2018-10-03 09:18:37,261 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:37,261 INFO  L375         BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1]
[2018-10-03 09:18:37,261 INFO  L423      AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:37,261 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:37,262 INFO  L82        PathProgramCache]: Analyzing trace with hash 2000313709, now seen corresponding path program 8 times
[2018-10-03 09:18:37,262 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:37,262 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:37,263 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:37,263 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:37,263 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:37,267 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:37,346 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:37,347 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:37,347 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:37,355 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:37,361 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:37,362 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:37,362 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:37,396 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:37,422 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:37,422 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2018-10-03 09:18:37,423 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-10-03 09:18:37,423 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-10-03 09:18:37,423 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:37,423 INFO  L87              Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 6 states.
[2018-10-03 09:18:37,469 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:37,469 INFO  L93              Difference]: Finished difference Result 21 states and 28 transitions.
[2018-10-03 09:18:37,472 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-10-03 09:18:37,473 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 9
[2018-10-03 09:18:37,473 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:37,473 INFO  L225             Difference]: With dead ends: 21
[2018-10-03 09:18:37,473 INFO  L226             Difference]: Without dead ends: 19
[2018-10-03 09:18:37,474 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4
[2018-10-03 09:18:37,474 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2018-10-03 09:18:37,478 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16.
[2018-10-03 09:18:37,478 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2018-10-03 09:18:37,479 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions.
[2018-10-03 09:18:37,479 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 9
[2018-10-03 09:18:37,479 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:37,479 INFO  L480      AbstractCegarLoop]: Abstraction has 16 states and 22 transitions.
[2018-10-03 09:18:37,480 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-10-03 09:18:37,480 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions.
[2018-10-03 09:18:37,480 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2018-10-03 09:18:37,480 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:37,480 INFO  L375         BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1]
[2018-10-03 09:18:37,481 INFO  L423      AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:37,481 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:37,481 INFO  L82        PathProgramCache]: Analyzing trace with hash 2000315631, now seen corresponding path program 3 times
[2018-10-03 09:18:37,481 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:37,481 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:37,482 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:37,482 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:37,482 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:37,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:37,580 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:37,581 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:37,581 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:37,589 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:37,594 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2018-10-03 09:18:37,594 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:37,595 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:37,622 INFO  L134       CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:37,644 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:37,645 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5
[2018-10-03 09:18:37,645 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-10-03 09:18:37,645 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-10-03 09:18:37,645 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:37,645 INFO  L87              Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 6 states.
[2018-10-03 09:18:37,679 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:37,680 INFO  L93              Difference]: Finished difference Result 20 states and 27 transitions.
[2018-10-03 09:18:37,681 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. 
[2018-10-03 09:18:37,681 INFO  L78                 Accepts]: Start accepts. Automaton has 6 states. Word has length 9
[2018-10-03 09:18:37,681 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:37,681 INFO  L225             Difference]: With dead ends: 20
[2018-10-03 09:18:37,682 INFO  L226             Difference]: Without dead ends: 18
[2018-10-03 09:18:37,682 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 4
[2018-10-03 09:18:37,683 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2018-10-03 09:18:37,687 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 12.
[2018-10-03 09:18:37,687 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2018-10-03 09:18:37,687 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 16 transitions.
[2018-10-03 09:18:37,688 INFO  L78                 Accepts]: Start accepts. Automaton has 12 states and 16 transitions. Word has length 9
[2018-10-03 09:18:37,688 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:37,688 INFO  L480      AbstractCegarLoop]: Abstraction has 12 states and 16 transitions.
[2018-10-03 09:18:37,688 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-10-03 09:18:37,688 INFO  L276                IsEmpty]: Start isEmpty. Operand 12 states and 16 transitions.
[2018-10-03 09:18:37,689 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:37,689 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:37,689 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1]
[2018-10-03 09:18:37,689 INFO  L423      AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:37,689 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:37,690 INFO  L82        PathProgramCache]: Analyzing trace with hash -4277844, now seen corresponding path program 4 times
[2018-10-03 09:18:37,690 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:37,690 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:37,691 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:37,691 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:37,691 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:37,696 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:37,779 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:37,779 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:37,779 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:37,788 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:37,796 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:37,797 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:37,798 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:37,865 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:37,886 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:37,886 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:37,887 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:37,887 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:37,887 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:37,887 INFO  L87              Difference]: Start difference. First operand 12 states and 16 transitions. Second operand 7 states.
[2018-10-03 09:18:37,918 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:37,919 INFO  L93              Difference]: Finished difference Result 25 states and 34 transitions.
[2018-10-03 09:18:37,919 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:37,919 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:37,919 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:37,920 INFO  L225             Difference]: With dead ends: 25
[2018-10-03 09:18:37,920 INFO  L226             Difference]: Without dead ends: 23
[2018-10-03 09:18:37,921 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 5
[2018-10-03 09:18:37,921 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2018-10-03 09:18:37,928 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18.
[2018-10-03 09:18:37,930 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2018-10-03 09:18:37,930 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions.
[2018-10-03 09:18:37,930 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 11
[2018-10-03 09:18:37,931 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:37,931 INFO  L480      AbstractCegarLoop]: Abstraction has 18 states and 25 transitions.
[2018-10-03 09:18:37,931 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:37,931 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions.
[2018-10-03 09:18:37,931 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:37,932 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:37,932 INFO  L375         BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1]
[2018-10-03 09:18:37,932 INFO  L423      AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:37,932 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:37,933 INFO  L82        PathProgramCache]: Analyzing trace with hash -4275922, now seen corresponding path program 9 times
[2018-10-03 09:18:37,933 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:37,933 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:37,934 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:37,934 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:37,934 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:37,942 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:38,192 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:38,192 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:38,192 INFO  L227   ckRefinementStrategy]: 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
[2018-10-03 09:18:38,207 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:38,237 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2018-10-03 09:18:38,237 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:38,238 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:38,256 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:38,279 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:38,280 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:38,280 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:38,280 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:38,280 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:38,280 INFO  L87              Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 7 states.
[2018-10-03 09:18:38,330 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:38,330 INFO  L93              Difference]: Finished difference Result 25 states and 34 transitions.
[2018-10-03 09:18:38,330 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:38,330 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:38,330 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:38,331 INFO  L225             Difference]: With dead ends: 25
[2018-10-03 09:18:38,331 INFO  L226             Difference]: Without dead ends: 23
[2018-10-03 09:18:38,331 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.2s impTime 5
[2018-10-03 09:18:38,331 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2018-10-03 09:18:38,338 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16.
[2018-10-03 09:18:38,338 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2018-10-03 09:18:38,339 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions.
[2018-10-03 09:18:38,339 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 11
[2018-10-03 09:18:38,339 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:38,339 INFO  L480      AbstractCegarLoop]: Abstraction has 16 states and 22 transitions.
[2018-10-03 09:18:38,339 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:38,339 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions.
[2018-10-03 09:18:38,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:38,340 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:38,340 INFO  L375         BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1]
[2018-10-03 09:18:38,340 INFO  L423      AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:38,341 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:38,341 INFO  L82        PathProgramCache]: Analyzing trace with hash -2430802, now seen corresponding path program 10 times
[2018-10-03 09:18:38,341 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:38,341 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:38,342 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:38,342 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:38,342 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:38,345 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:38,415 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:38,416 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:38,416 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:38,428 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:38,436 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:38,437 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:38,437 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:38,472 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:38,496 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:38,497 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:38,497 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:38,497 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:38,497 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:38,497 INFO  L87              Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 7 states.
[2018-10-03 09:18:38,558 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:38,558 INFO  L93              Difference]: Finished difference Result 23 states and 31 transitions.
[2018-10-03 09:18:38,559 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:38,560 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:38,560 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:38,560 INFO  L225             Difference]: With dead ends: 23
[2018-10-03 09:18:38,560 INFO  L226             Difference]: Without dead ends: 21
[2018-10-03 09:18:38,561 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 5
[2018-10-03 09:18:38,561 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2018-10-03 09:18:38,568 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18.
[2018-10-03 09:18:38,568 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2018-10-03 09:18:38,569 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions.
[2018-10-03 09:18:38,569 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 11
[2018-10-03 09:18:38,569 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:38,569 INFO  L480      AbstractCegarLoop]: Abstraction has 18 states and 25 transitions.
[2018-10-03 09:18:38,569 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:38,570 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions.
[2018-10-03 09:18:38,570 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:38,570 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:38,570 INFO  L375         BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1]
[2018-10-03 09:18:38,571 INFO  L423      AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:38,571 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:38,571 INFO  L82        PathProgramCache]: Analyzing trace with hash -2428880, now seen corresponding path program 11 times
[2018-10-03 09:18:38,571 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:38,571 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:38,572 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:38,572 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:38,572 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:38,576 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:38,680 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:38,684 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:38,684 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:38,692 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:38,701 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2018-10-03 09:18:38,701 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:38,702 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:38,738 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:38,760 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:38,760 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:38,760 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:38,760 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:38,761 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:38,761 INFO  L87              Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 7 states.
[2018-10-03 09:18:38,975 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:38,975 INFO  L93              Difference]: Finished difference Result 22 states and 30 transitions.
[2018-10-03 09:18:38,976 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:38,976 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:38,976 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:38,976 INFO  L225             Difference]: With dead ends: 22
[2018-10-03 09:18:38,977 INFO  L226             Difference]: Without dead ends: 20
[2018-10-03 09:18:38,977 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 5
[2018-10-03 09:18:38,977 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2018-10-03 09:18:38,982 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14.
[2018-10-03 09:18:38,982 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2018-10-03 09:18:38,983 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions.
[2018-10-03 09:18:38,983 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 11
[2018-10-03 09:18:38,983 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:38,984 INFO  L480      AbstractCegarLoop]: Abstraction has 14 states and 19 transitions.
[2018-10-03 09:18:38,984 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:38,984 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions.
[2018-10-03 09:18:38,984 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:38,984 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:38,984 INFO  L375         BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1]
[2018-10-03 09:18:38,985 INFO  L423      AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:38,985 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:38,985 INFO  L82        PathProgramCache]: Analyzing trace with hash 1770729518, now seen corresponding path program 12 times
[2018-10-03 09:18:38,985 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:38,985 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:38,986 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:38,986 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:38,986 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:38,989 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:39,100 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:39,100 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:39,100 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:39,108 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:18:39,115 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2018-10-03 09:18:39,116 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:39,117 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:39,145 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:39,166 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:39,166 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:39,167 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:39,167 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:39,167 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:39,167 INFO  L87              Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 7 states.
[2018-10-03 09:18:39,303 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:39,303 INFO  L93              Difference]: Finished difference Result 25 states and 34 transitions.
[2018-10-03 09:18:39,303 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:39,303 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:39,304 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:39,304 INFO  L225             Difference]: With dead ends: 25
[2018-10-03 09:18:39,304 INFO  L226             Difference]: Without dead ends: 23
[2018-10-03 09:18:39,305 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 5
[2018-10-03 09:18:39,305 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2018-10-03 09:18:39,311 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18.
[2018-10-03 09:18:39,311 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2018-10-03 09:18:39,312 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions.
[2018-10-03 09:18:39,312 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 11
[2018-10-03 09:18:39,312 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:39,312 INFO  L480      AbstractCegarLoop]: Abstraction has 18 states and 25 transitions.
[2018-10-03 09:18:39,312 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:39,313 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions.
[2018-10-03 09:18:39,313 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:39,313 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:39,313 INFO  L375         BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1]
[2018-10-03 09:18:39,313 INFO  L423      AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:39,314 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:39,314 INFO  L82        PathProgramCache]: Analyzing trace with hash 1770731440, now seen corresponding path program 13 times
[2018-10-03 09:18:39,314 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:39,314 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:39,315 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:39,315 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:39,315 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:39,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:39,392 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:39,392 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:39,393 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:39,419 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:39,436 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:39,438 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:39,509 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:39,531 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:39,531 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:39,531 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:39,531 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:39,531 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:39,531 INFO  L87              Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 7 states.
[2018-10-03 09:18:39,578 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:39,579 INFO  L93              Difference]: Finished difference Result 25 states and 34 transitions.
[2018-10-03 09:18:39,579 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:39,579 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:39,579 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:39,579 INFO  L225             Difference]: With dead ends: 25
[2018-10-03 09:18:39,580 INFO  L226             Difference]: Without dead ends: 23
[2018-10-03 09:18:39,580 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 5
[2018-10-03 09:18:39,580 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2018-10-03 09:18:39,586 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 16.
[2018-10-03 09:18:39,586 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2018-10-03 09:18:39,586 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions.
[2018-10-03 09:18:39,586 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 11
[2018-10-03 09:18:39,587 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:39,587 INFO  L480      AbstractCegarLoop]: Abstraction has 16 states and 22 transitions.
[2018-10-03 09:18:39,587 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:39,587 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions.
[2018-10-03 09:18:39,587 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:39,587 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:39,588 INFO  L375         BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1]
[2018-10-03 09:18:39,588 INFO  L423      AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:39,588 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:39,588 INFO  L82        PathProgramCache]: Analyzing trace with hash 1772576560, now seen corresponding path program 14 times
[2018-10-03 09:18:39,588 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:39,588 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:39,589 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:39,589 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:39,589 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:39,592 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:39,650 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:39,650 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:39,650 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:39,658 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:39,664 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:39,665 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:39,668 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:39,702 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:39,723 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:39,724 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:39,724 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:39,724 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:39,724 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:39,724 INFO  L87              Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 7 states.
[2018-10-03 09:18:39,895 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:39,895 INFO  L93              Difference]: Finished difference Result 23 states and 31 transitions.
[2018-10-03 09:18:39,895 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:39,896 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:39,896 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:39,896 INFO  L225             Difference]: With dead ends: 23
[2018-10-03 09:18:39,896 INFO  L226             Difference]: Without dead ends: 21
[2018-10-03 09:18:39,897 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 5
[2018-10-03 09:18:39,897 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2018-10-03 09:18:39,906 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18.
[2018-10-03 09:18:39,906 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2018-10-03 09:18:39,906 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions.
[2018-10-03 09:18:39,906 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 11
[2018-10-03 09:18:39,907 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:39,907 INFO  L480      AbstractCegarLoop]: Abstraction has 18 states and 25 transitions.
[2018-10-03 09:18:39,907 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:39,907 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions.
[2018-10-03 09:18:39,907 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:39,907 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:39,908 INFO  L375         BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1]
[2018-10-03 09:18:39,908 INFO  L423      AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:39,908 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:39,908 INFO  L82        PathProgramCache]: Analyzing trace with hash 1772578482, now seen corresponding path program 15 times
[2018-10-03 09:18:39,908 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:39,908 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:39,909 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:39,909 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:39,909 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:39,917 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:40,322 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:40,322 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:40,322 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:40,330 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:40,339 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2018-10-03 09:18:40,339 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:40,340 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:40,359 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:40,386 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:40,386 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:40,386 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:40,387 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:40,387 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:40,387 INFO  L87              Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 7 states.
[2018-10-03 09:18:40,480 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:40,480 INFO  L93              Difference]: Finished difference Result 22 states and 30 transitions.
[2018-10-03 09:18:40,480 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:40,480 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:40,480 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:40,481 INFO  L225             Difference]: With dead ends: 22
[2018-10-03 09:18:40,481 INFO  L226             Difference]: Without dead ends: 20
[2018-10-03 09:18:40,481 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 5
[2018-10-03 09:18:40,481 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2018-10-03 09:18:40,487 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 14.
[2018-10-03 09:18:40,487 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2018-10-03 09:18:40,488 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions.
[2018-10-03 09:18:40,488 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 11
[2018-10-03 09:18:40,488 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:40,488 INFO  L480      AbstractCegarLoop]: Abstraction has 14 states and 19 transitions.
[2018-10-03 09:18:40,488 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:40,488 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions.
[2018-10-03 09:18:40,488 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:40,489 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:40,490 INFO  L375         BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1]
[2018-10-03 09:18:40,490 INFO  L423      AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:40,490 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:40,490 INFO  L82        PathProgramCache]: Analyzing trace with hash 675780526, now seen corresponding path program 16 times
[2018-10-03 09:18:40,490 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:40,490 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:40,491 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:40,491 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:40,491 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:40,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:40,559 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:40,560 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:40,560 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:40,570 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:40,598 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:40,599 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:40,600 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:40,634 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:40,655 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:40,655 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:40,655 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:40,655 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:40,655 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:40,656 INFO  L87              Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 7 states.
[2018-10-03 09:18:40,749 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:40,750 INFO  L93              Difference]: Finished difference Result 31 states and 43 transitions.
[2018-10-03 09:18:40,750 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:40,750 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:40,750 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:40,751 INFO  L225             Difference]: With dead ends: 31
[2018-10-03 09:18:40,751 INFO  L226             Difference]: Without dead ends: 29
[2018-10-03 09:18:40,751 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 5
[2018-10-03 09:18:40,751 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-10-03 09:18:40,761 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20.
[2018-10-03 09:18:40,761 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:18:40,761 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:18:40,761 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 11
[2018-10-03 09:18:40,762 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:40,762 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:18:40,762 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:40,762 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:18:40,762 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:40,763 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:40,763 INFO  L375         BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1]
[2018-10-03 09:18:40,763 INFO  L423      AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:40,763 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:40,763 INFO  L82        PathProgramCache]: Analyzing trace with hash 675782448, now seen corresponding path program 17 times
[2018-10-03 09:18:40,763 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:40,764 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:40,764 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:40,765 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:40,765 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:40,767 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:40,867 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:40,867 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:40,867 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:40,875 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:40,882 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s)
[2018-10-03 09:18:40,882 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:40,884 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:40,906 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:40,927 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:40,927 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:40,928 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:40,928 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:40,928 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:40,928 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 7 states.
[2018-10-03 09:18:40,981 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:40,981 INFO  L93              Difference]: Finished difference Result 29 states and 40 transitions.
[2018-10-03 09:18:40,981 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:40,981 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:40,982 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:40,982 INFO  L225             Difference]: With dead ends: 29
[2018-10-03 09:18:40,982 INFO  L226             Difference]: Without dead ends: 27
[2018-10-03 09:18:40,982 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 5
[2018-10-03 09:18:40,982 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2018-10-03 09:18:40,991 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 18.
[2018-10-03 09:18:40,992 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2018-10-03 09:18:40,992 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions.
[2018-10-03 09:18:40,992 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 11
[2018-10-03 09:18:40,992 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:40,992 INFO  L480      AbstractCegarLoop]: Abstraction has 18 states and 25 transitions.
[2018-10-03 09:18:40,992 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:40,993 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions.
[2018-10-03 09:18:40,993 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:40,993 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:40,993 INFO  L375         BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1]
[2018-10-03 09:18:40,993 INFO  L423      AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:40,994 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:40,994 INFO  L82        PathProgramCache]: Analyzing trace with hash 677627568, now seen corresponding path program 18 times
[2018-10-03 09:18:40,994 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:40,994 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:40,995 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:40,995 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:40,995 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:40,997 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:41,038 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:41,038 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:41,038 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:41,047 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:18:41,068 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2018-10-03 09:18:41,069 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:41,070 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:41,177 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:41,208 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:41,208 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:41,208 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:41,208 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:41,209 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:41,209 INFO  L87              Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 7 states.
[2018-10-03 09:18:41,286 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:41,287 INFO  L93              Difference]: Finished difference Result 31 states and 43 transitions.
[2018-10-03 09:18:41,287 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:41,287 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:41,287 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:41,287 INFO  L225             Difference]: With dead ends: 31
[2018-10-03 09:18:41,288 INFO  L226             Difference]: Without dead ends: 29
[2018-10-03 09:18:41,288 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 5
[2018-10-03 09:18:41,288 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-10-03 09:18:41,296 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20.
[2018-10-03 09:18:41,296 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:18:41,297 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:18:41,297 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 11
[2018-10-03 09:18:41,297 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:41,297 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:18:41,297 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:41,298 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:18:41,298 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:41,298 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:41,298 INFO  L375         BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1]
[2018-10-03 09:18:41,298 INFO  L423      AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:41,299 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:41,299 INFO  L82        PathProgramCache]: Analyzing trace with hash 677629490, now seen corresponding path program 19 times
[2018-10-03 09:18:41,299 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:41,299 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:41,300 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:41,300 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:41,300 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:41,303 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:41,351 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:41,351 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:41,351 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:41,359 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:41,365 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:41,366 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:41,395 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:41,416 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:41,417 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:41,417 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:41,417 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:41,417 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:41,417 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 7 states.
[2018-10-03 09:18:41,442 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:41,442 INFO  L93              Difference]: Finished difference Result 29 states and 40 transitions.
[2018-10-03 09:18:41,443 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:41,443 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:41,443 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:41,444 INFO  L225             Difference]: With dead ends: 29
[2018-10-03 09:18:41,444 INFO  L226             Difference]: Without dead ends: 27
[2018-10-03 09:18:41,444 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 5
[2018-10-03 09:18:41,444 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2018-10-03 09:18:41,451 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 16.
[2018-10-03 09:18:41,451 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2018-10-03 09:18:41,451 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions.
[2018-10-03 09:18:41,451 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 11
[2018-10-03 09:18:41,451 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:41,451 INFO  L480      AbstractCegarLoop]: Abstraction has 16 states and 22 transitions.
[2018-10-03 09:18:41,452 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:41,452 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions.
[2018-10-03 09:18:41,452 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:41,452 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:41,452 INFO  L375         BasicCegarLoop]: trace histogram [4, 2, 2, 1, 1, 1]
[2018-10-03 09:18:41,453 INFO  L423      AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:41,453 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:41,453 INFO  L82        PathProgramCache]: Analyzing trace with hash -1844179408, now seen corresponding path program 20 times
[2018-10-03 09:18:41,453 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:41,453 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:41,454 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:41,454 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:41,454 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:41,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:41,500 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:41,500 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:41,500 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:41,510 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:41,534 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:41,534 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:41,535 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:41,562 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:41,583 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:41,583 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:41,583 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:41,583 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:41,583 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:41,584 INFO  L87              Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 7 states.
[2018-10-03 09:18:41,732 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:41,732 INFO  L93              Difference]: Finished difference Result 27 states and 37 transitions.
[2018-10-03 09:18:41,733 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:41,733 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:41,733 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:41,733 INFO  L225             Difference]: With dead ends: 27
[2018-10-03 09:18:41,733 INFO  L226             Difference]: Without dead ends: 25
[2018-10-03 09:18:41,734 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 5
[2018-10-03 09:18:41,734 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2018-10-03 09:18:41,744 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 20.
[2018-10-03 09:18:41,744 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:18:41,744 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:18:41,744 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 11
[2018-10-03 09:18:41,744 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:41,745 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:18:41,745 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:41,745 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:18:41,745 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:41,745 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:41,745 INFO  L375         BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1]
[2018-10-03 09:18:41,746 INFO  L423      AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:41,746 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:41,746 INFO  L82        PathProgramCache]: Analyzing trace with hash -1844177486, now seen corresponding path program 21 times
[2018-10-03 09:18:41,746 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:41,746 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:41,747 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:41,747 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:41,747 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:41,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:41,821 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:41,822 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:41,822 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:41,831 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:41,849 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s)
[2018-10-03 09:18:41,850 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:41,851 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:41,913 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:41,935 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:41,935 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:41,935 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:41,935 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:41,935 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:41,935 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 7 states.
[2018-10-03 09:18:41,960 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:41,961 INFO  L93              Difference]: Finished difference Result 27 states and 37 transitions.
[2018-10-03 09:18:41,961 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:41,961 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:41,961 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:41,962 INFO  L225             Difference]: With dead ends: 27
[2018-10-03 09:18:41,962 INFO  L226             Difference]: Without dead ends: 25
[2018-10-03 09:18:41,962 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 5
[2018-10-03 09:18:41,963 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2018-10-03 09:18:41,972 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 18.
[2018-10-03 09:18:41,972 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2018-10-03 09:18:41,973 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions.
[2018-10-03 09:18:41,973 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 11
[2018-10-03 09:18:41,973 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:41,973 INFO  L480      AbstractCegarLoop]: Abstraction has 18 states and 25 transitions.
[2018-10-03 09:18:41,973 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:41,973 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions.
[2018-10-03 09:18:41,974 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:41,974 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:41,974 INFO  L375         BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1]
[2018-10-03 09:18:41,974 INFO  L423      AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:41,974 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:41,975 INFO  L82        PathProgramCache]: Analyzing trace with hash -1842332366, now seen corresponding path program 22 times
[2018-10-03 09:18:41,975 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:41,975 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:41,976 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:41,976 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:41,976 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:41,978 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:42,016 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:42,016 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:42,016 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:42,024 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:42,038 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:42,038 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:42,039 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:42,064 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:42,085 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:42,085 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:42,085 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:42,085 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:42,085 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:42,085 INFO  L87              Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 7 states.
[2018-10-03 09:18:42,129 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:42,129 INFO  L93              Difference]: Finished difference Result 25 states and 34 transitions.
[2018-10-03 09:18:42,129 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:42,130 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:42,130 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:42,130 INFO  L225             Difference]: With dead ends: 25
[2018-10-03 09:18:42,130 INFO  L226             Difference]: Without dead ends: 23
[2018-10-03 09:18:42,131 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 5
[2018-10-03 09:18:42,131 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2018-10-03 09:18:42,140 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20.
[2018-10-03 09:18:42,140 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:18:42,140 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:18:42,140 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 11
[2018-10-03 09:18:42,141 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:42,141 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:18:42,141 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:42,141 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:18:42,141 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-10-03 09:18:42,142 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:42,142 INFO  L375         BasicCegarLoop]: trace histogram [4, 4, 1, 1, 1]
[2018-10-03 09:18:42,142 INFO  L423      AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:42,142 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:42,142 INFO  L82        PathProgramCache]: Analyzing trace with hash -1842330444, now seen corresponding path program 4 times
[2018-10-03 09:18:42,142 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:42,143 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:42,143 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:42,143 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:42,144 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:42,146 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:42,191 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:42,191 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:42,192 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:42,202 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:42,236 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:42,237 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:42,238 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:42,291 INFO  L134       CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:42,312 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:42,312 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6
[2018-10-03 09:18:42,312 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2018-10-03 09:18:42,312 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2018-10-03 09:18:42,313 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:42,313 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 7 states.
[2018-10-03 09:18:42,336 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:42,337 INFO  L93              Difference]: Finished difference Result 24 states and 33 transitions.
[2018-10-03 09:18:42,337 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2018-10-03 09:18:42,337 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 11
[2018-10-03 09:18:42,337 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:42,338 INFO  L225             Difference]: With dead ends: 24
[2018-10-03 09:18:42,338 INFO  L226             Difference]: Without dead ends: 22
[2018-10-03 09:18:42,338 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 5
[2018-10-03 09:18:42,339 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2018-10-03 09:18:42,344 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 14.
[2018-10-03 09:18:42,344 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2018-10-03 09:18:42,345 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 19 transitions.
[2018-10-03 09:18:42,345 INFO  L78                 Accepts]: Start accepts. Automaton has 14 states and 19 transitions. Word has length 11
[2018-10-03 09:18:42,345 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:42,345 INFO  L480      AbstractCegarLoop]: Abstraction has 14 states and 19 transitions.
[2018-10-03 09:18:42,345 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2018-10-03 09:18:42,345 INFO  L276                IsEmpty]: Start isEmpty. Operand 14 states and 19 transitions.
[2018-10-03 09:18:42,345 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:42,345 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:42,346 INFO  L375         BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1]
[2018-10-03 09:18:42,346 INFO  L423      AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:42,346 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:42,346 INFO  L82        PathProgramCache]: Analyzing trace with hash 183654063, now seen corresponding path program 5 times
[2018-10-03 09:18:42,346 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:42,346 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:42,347 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:42,347 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:42,347 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:42,350 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:42,406 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:42,407 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:42,407 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:42,417 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:42,490 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2018-10-03 09:18:42,491 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:42,492 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:42,668 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:42,688 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:42,689 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:42,689 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:42,689 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:42,689 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:42,689 INFO  L87              Difference]: Start difference. First operand 14 states and 19 transitions. Second operand 8 states.
[2018-10-03 09:18:42,727 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:42,727 INFO  L93              Difference]: Finished difference Result 33 states and 46 transitions.
[2018-10-03 09:18:42,727 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:42,727 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:42,728 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:42,728 INFO  L225             Difference]: With dead ends: 33
[2018-10-03 09:18:42,728 INFO  L226             Difference]: Without dead ends: 31
[2018-10-03 09:18:42,728 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 6
[2018-10-03 09:18:42,728 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2018-10-03 09:18:42,739 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22.
[2018-10-03 09:18:42,740 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:42,740 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:42,740 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13
[2018-10-03 09:18:42,740 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:42,740 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:42,740 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:42,741 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:42,741 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:42,741 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:42,741 INFO  L375         BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1]
[2018-10-03 09:18:42,741 INFO  L423      AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:42,742 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:42,742 INFO  L82        PathProgramCache]: Analyzing trace with hash 183655985, now seen corresponding path program 23 times
[2018-10-03 09:18:42,742 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:42,742 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:42,743 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:42,743 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:42,743 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:42,745 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:42,814 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:42,814 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:42,815 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:42,824 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:42,831 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2018-10-03 09:18:42,831 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:42,832 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:42,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:42,900 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:42,900 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:42,900 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:42,901 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:42,901 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:42,901 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states.
[2018-10-03 09:18:42,934 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:42,934 INFO  L93              Difference]: Finished difference Result 31 states and 43 transitions.
[2018-10-03 09:18:42,935 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:42,935 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:42,935 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:42,935 INFO  L225             Difference]: With dead ends: 31
[2018-10-03 09:18:42,935 INFO  L226             Difference]: Without dead ends: 29
[2018-10-03 09:18:42,936 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6
[2018-10-03 09:18:42,936 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-10-03 09:18:42,947 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20.
[2018-10-03 09:18:42,947 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:18:42,948 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:18:42,948 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 13
[2018-10-03 09:18:42,948 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:42,948 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:18:42,948 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:42,948 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:18:42,948 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:42,948 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:42,949 INFO  L375         BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1]
[2018-10-03 09:18:42,949 INFO  L423      AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:42,949 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:42,949 INFO  L82        PathProgramCache]: Analyzing trace with hash 185501105, now seen corresponding path program 24 times
[2018-10-03 09:18:42,949 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:42,949 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:42,950 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:42,950 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:42,950 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:42,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:43,024 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:43,024 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:43,025 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:43,033 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:18:43,039 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2018-10-03 09:18:43,039 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:43,041 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:43,088 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:43,109 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:43,109 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:43,109 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:43,110 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:43,110 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:43,110 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 8 states.
[2018-10-03 09:18:43,286 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:43,286 INFO  L93              Difference]: Finished difference Result 33 states and 46 transitions.
[2018-10-03 09:18:43,286 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:43,286 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:43,286 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:43,287 INFO  L225             Difference]: With dead ends: 33
[2018-10-03 09:18:43,287 INFO  L226             Difference]: Without dead ends: 31
[2018-10-03 09:18:43,287 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6
[2018-10-03 09:18:43,287 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2018-10-03 09:18:43,300 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22.
[2018-10-03 09:18:43,300 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:43,301 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:43,301 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13
[2018-10-03 09:18:43,301 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:43,301 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:43,301 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:43,302 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:43,302 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:43,302 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:43,302 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:43,303 INFO  L423      AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:43,303 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:43,303 INFO  L82        PathProgramCache]: Analyzing trace with hash 185503027, now seen corresponding path program 25 times
[2018-10-03 09:18:43,303 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:43,303 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:43,304 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:43,304 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:43,304 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:43,306 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:43,362 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:43,363 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:43,363 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:43,381 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:43,394 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:43,395 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:43,427 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:43,448 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:43,448 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:43,448 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:43,448 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:43,449 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:43,449 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states.
[2018-10-03 09:18:43,483 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:43,484 INFO  L93              Difference]: Finished difference Result 31 states and 43 transitions.
[2018-10-03 09:18:43,484 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:43,484 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:43,485 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:43,485 INFO  L225             Difference]: With dead ends: 31
[2018-10-03 09:18:43,485 INFO  L226             Difference]: Without dead ends: 29
[2018-10-03 09:18:43,486 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:43,486 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-10-03 09:18:43,495 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18.
[2018-10-03 09:18:43,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2018-10-03 09:18:43,496 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions.
[2018-10-03 09:18:43,496 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 13
[2018-10-03 09:18:43,496 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:43,496 INFO  L480      AbstractCegarLoop]: Abstraction has 18 states and 25 transitions.
[2018-10-03 09:18:43,496 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:43,496 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions.
[2018-10-03 09:18:43,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:43,497 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:43,497 INFO  L375         BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1]
[2018-10-03 09:18:43,497 INFO  L423      AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:43,497 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:43,497 INFO  L82        PathProgramCache]: Analyzing trace with hash 1958661425, now seen corresponding path program 26 times
[2018-10-03 09:18:43,497 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:43,497 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:43,498 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:43,498 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:43,498 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:43,500 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:43,696 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:43,696 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:43,696 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:43,704 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:43,708 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:43,708 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:43,709 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:43,728 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:43,749 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:43,750 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:43,750 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:43,750 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:43,750 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:43,750 INFO  L87              Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 8 states.
[2018-10-03 09:18:43,790 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:43,791 INFO  L93              Difference]: Finished difference Result 29 states and 40 transitions.
[2018-10-03 09:18:43,791 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:43,791 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:43,791 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:43,792 INFO  L225             Difference]: With dead ends: 29
[2018-10-03 09:18:43,792 INFO  L226             Difference]: Without dead ends: 27
[2018-10-03 09:18:43,792 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 6
[2018-10-03 09:18:43,792 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2018-10-03 09:18:43,804 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22.
[2018-10-03 09:18:43,805 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:43,805 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:43,805 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13
[2018-10-03 09:18:43,805 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:43,805 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:43,805 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:43,805 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:43,805 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:43,806 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:43,806 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:43,806 INFO  L423      AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:43,806 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:43,807 INFO  L82        PathProgramCache]: Analyzing trace with hash 1958663347, now seen corresponding path program 27 times
[2018-10-03 09:18:43,807 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:43,807 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:43,808 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:43,808 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:43,808 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:43,810 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:43,862 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:43,863 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:43,863 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:43,872 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:43,880 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2018-10-03 09:18:43,880 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:43,882 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:43,921 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:43,942 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:43,942 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:43,942 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:43,942 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:43,942 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:43,942 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states.
[2018-10-03 09:18:43,974 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:43,974 INFO  L93              Difference]: Finished difference Result 29 states and 40 transitions.
[2018-10-03 09:18:43,975 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:43,975 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:43,975 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:43,975 INFO  L225             Difference]: With dead ends: 29
[2018-10-03 09:18:43,975 INFO  L226             Difference]: Without dead ends: 27
[2018-10-03 09:18:43,976 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:43,976 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2018-10-03 09:18:43,988 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20.
[2018-10-03 09:18:43,988 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:18:43,988 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:18:43,988 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 13
[2018-10-03 09:18:43,988 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:43,988 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:18:43,989 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:43,989 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:18:43,989 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:43,989 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:43,989 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:43,990 INFO  L423      AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:43,990 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:43,990 INFO  L82        PathProgramCache]: Analyzing trace with hash 1960508467, now seen corresponding path program 28 times
[2018-10-03 09:18:43,990 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:43,990 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:43,991 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:43,991 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:43,991 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:43,993 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:44,039 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:44,040 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:44,040 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:44,048 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:44,061 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:44,061 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:44,062 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:44,104 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:44,124 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:44,124 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:44,125 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:44,125 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:44,125 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:44,125 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 8 states.
[2018-10-03 09:18:44,198 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:44,198 INFO  L93              Difference]: Finished difference Result 27 states and 37 transitions.
[2018-10-03 09:18:44,199 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:44,199 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:44,199 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:44,199 INFO  L225             Difference]: With dead ends: 27
[2018-10-03 09:18:44,200 INFO  L226             Difference]: Without dead ends: 25
[2018-10-03 09:18:44,200 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:44,200 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2018-10-03 09:18:44,216 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22.
[2018-10-03 09:18:44,217 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:44,217 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:44,217 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13
[2018-10-03 09:18:44,217 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:44,217 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:44,218 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:44,218 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:44,218 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:44,218 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:44,218 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:44,218 INFO  L423      AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:44,219 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:44,219 INFO  L82        PathProgramCache]: Analyzing trace with hash 1960510389, now seen corresponding path program 29 times
[2018-10-03 09:18:44,219 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:44,219 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:44,220 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:44,220 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:44,220 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:44,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:44,292 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:44,293 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:44,293 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:44,302 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:44,311 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2018-10-03 09:18:44,311 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:44,313 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:44,354 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:44,375 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:44,375 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:44,376 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:44,376 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:44,376 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:44,376 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states.
[2018-10-03 09:18:44,410 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:44,410 INFO  L93              Difference]: Finished difference Result 26 states and 36 transitions.
[2018-10-03 09:18:44,411 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:44,411 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:44,411 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:44,412 INFO  L225             Difference]: With dead ends: 26
[2018-10-03 09:18:44,412 INFO  L226             Difference]: Without dead ends: 24
[2018-10-03 09:18:44,412 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6
[2018-10-03 09:18:44,413 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2018-10-03 09:18:44,425 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16.
[2018-10-03 09:18:44,426 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2018-10-03 09:18:44,426 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions.
[2018-10-03 09:18:44,426 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 13
[2018-10-03 09:18:44,426 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:44,426 INFO  L480      AbstractCegarLoop]: Abstraction has 16 states and 22 transitions.
[2018-10-03 09:18:44,426 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:44,427 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions.
[2018-10-03 09:18:44,427 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:44,427 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:44,427 INFO  L375         BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1]
[2018-10-03 09:18:44,427 INFO  L423      AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:44,428 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:44,428 INFO  L82        PathProgramCache]: Analyzing trace with hash 863712433, now seen corresponding path program 30 times
[2018-10-03 09:18:44,428 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:44,428 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:44,429 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:44,429 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:44,429 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:44,431 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:44,519 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:44,519 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:44,519 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:44,527 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:18:44,564 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2018-10-03 09:18:44,564 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:44,566 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:44,603 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:44,623 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:44,624 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:44,624 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:44,624 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:44,624 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:44,624 INFO  L87              Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 8 states.
[2018-10-03 09:18:44,681 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:44,681 INFO  L93              Difference]: Finished difference Result 33 states and 46 transitions.
[2018-10-03 09:18:44,681 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:44,681 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:44,681 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:44,682 INFO  L225             Difference]: With dead ends: 33
[2018-10-03 09:18:44,682 INFO  L226             Difference]: Without dead ends: 31
[2018-10-03 09:18:44,682 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6
[2018-10-03 09:18:44,682 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2018-10-03 09:18:44,696 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22.
[2018-10-03 09:18:44,697 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:44,697 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:44,697 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13
[2018-10-03 09:18:44,697 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:44,697 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:44,697 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:44,697 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:44,698 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:44,698 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:44,698 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:44,698 INFO  L423      AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:44,698 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:44,698 INFO  L82        PathProgramCache]: Analyzing trace with hash 863714355, now seen corresponding path program 31 times
[2018-10-03 09:18:44,698 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:44,698 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:44,699 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:44,699 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:44,699 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:44,701 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:44,767 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:44,767 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:44,767 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:44,775 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:44,796 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:44,798 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:44,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:44,853 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:44,854 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:44,854 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:44,854 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:44,854 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:44,854 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states.
[2018-10-03 09:18:45,070 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:45,070 INFO  L93              Difference]: Finished difference Result 31 states and 43 transitions.
[2018-10-03 09:18:45,070 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:45,070 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:45,071 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:45,071 INFO  L225             Difference]: With dead ends: 31
[2018-10-03 09:18:45,071 INFO  L226             Difference]: Without dead ends: 29
[2018-10-03 09:18:45,071 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:45,071 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-10-03 09:18:45,091 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20.
[2018-10-03 09:18:45,091 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:18:45,091 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:18:45,091 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 13
[2018-10-03 09:18:45,092 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:45,092 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:18:45,092 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:45,092 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:18:45,092 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:45,092 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:45,092 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:45,093 INFO  L423      AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:45,093 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:45,093 INFO  L82        PathProgramCache]: Analyzing trace with hash 865559475, now seen corresponding path program 32 times
[2018-10-03 09:18:45,093 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:45,093 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:45,094 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:45,094 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:45,094 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:45,096 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:45,331 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:45,332 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:45,332 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:45,339 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:45,343 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:45,344 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:45,344 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:45,397 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:45,419 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:45,419 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:45,420 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:45,420 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:45,420 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:45,420 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 8 states.
[2018-10-03 09:18:45,476 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:45,477 INFO  L93              Difference]: Finished difference Result 33 states and 46 transitions.
[2018-10-03 09:18:45,477 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:45,477 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:45,477 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:45,477 INFO  L225             Difference]: With dead ends: 33
[2018-10-03 09:18:45,477 INFO  L226             Difference]: Without dead ends: 31
[2018-10-03 09:18:45,478 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 6
[2018-10-03 09:18:45,478 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2018-10-03 09:18:45,491 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22.
[2018-10-03 09:18:45,491 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:45,491 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:45,491 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13
[2018-10-03 09:18:45,492 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:45,492 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:45,492 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:45,492 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:45,492 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:45,492 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:45,492 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:45,492 INFO  L423      AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:45,493 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:45,493 INFO  L82        PathProgramCache]: Analyzing trace with hash 865561397, now seen corresponding path program 33 times
[2018-10-03 09:18:45,493 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:45,493 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:45,493 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:45,494 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:45,494 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:45,495 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:45,545 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:45,545 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:45,545 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:45,556 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:45,562 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2018-10-03 09:18:45,562 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:45,563 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:45,584 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:45,605 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:45,605 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:45,605 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:45,606 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:45,606 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:45,606 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states.
[2018-10-03 09:18:45,649 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:45,649 INFO  L93              Difference]: Finished difference Result 31 states and 43 transitions.
[2018-10-03 09:18:45,649 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:45,650 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:45,650 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:45,650 INFO  L225             Difference]: With dead ends: 31
[2018-10-03 09:18:45,650 INFO  L226             Difference]: Without dead ends: 29
[2018-10-03 09:18:45,650 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:45,651 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-10-03 09:18:45,662 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 18.
[2018-10-03 09:18:45,662 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2018-10-03 09:18:45,662 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions.
[2018-10-03 09:18:45,662 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 13
[2018-10-03 09:18:45,662 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:45,662 INFO  L480      AbstractCegarLoop]: Abstraction has 18 states and 25 transitions.
[2018-10-03 09:18:45,663 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:45,663 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions.
[2018-10-03 09:18:45,663 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:45,663 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:45,663 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:45,663 INFO  L423      AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:45,663 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:45,664 INFO  L82        PathProgramCache]: Analyzing trace with hash -1656247501, now seen corresponding path program 34 times
[2018-10-03 09:18:45,664 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:45,664 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:45,664 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:45,664 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:45,665 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:45,666 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:45,753 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:45,753 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:45,753 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:45,761 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:45,765 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:45,766 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:45,766 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:45,793 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:45,815 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:45,815 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:45,815 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:45,816 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:45,816 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:45,816 INFO  L87              Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 8 states.
[2018-10-03 09:18:45,851 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:45,852 INFO  L93              Difference]: Finished difference Result 29 states and 40 transitions.
[2018-10-03 09:18:45,852 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:45,852 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:45,852 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:45,853 INFO  L225             Difference]: With dead ends: 29
[2018-10-03 09:18:45,853 INFO  L226             Difference]: Without dead ends: 27
[2018-10-03 09:18:45,853 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6
[2018-10-03 09:18:45,853 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2018-10-03 09:18:45,867 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22.
[2018-10-03 09:18:45,867 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:45,868 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:45,868 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13
[2018-10-03 09:18:45,868 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:45,868 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:45,868 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:45,868 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:45,868 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:45,868 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:45,868 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:45,869 INFO  L423      AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:45,869 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:45,869 INFO  L82        PathProgramCache]: Analyzing trace with hash -1656245579, now seen corresponding path program 35 times
[2018-10-03 09:18:45,869 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:45,869 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:45,869 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:45,870 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:45,870 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:45,871 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:46,019 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:46,019 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:46,019 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:46,028 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:46,036 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2018-10-03 09:18:46,036 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:46,037 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:46,061 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:46,082 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:46,082 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:46,083 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:46,083 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:46,083 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:46,083 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states.
[2018-10-03 09:18:46,114 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:46,114 INFO  L93              Difference]: Finished difference Result 29 states and 40 transitions.
[2018-10-03 09:18:46,114 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:46,114 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:46,115 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:46,115 INFO  L225             Difference]: With dead ends: 29
[2018-10-03 09:18:46,115 INFO  L226             Difference]: Without dead ends: 27
[2018-10-03 09:18:46,115 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6
[2018-10-03 09:18:46,116 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2018-10-03 09:18:46,130 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 20.
[2018-10-03 09:18:46,130 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:18:46,130 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:18:46,131 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 13
[2018-10-03 09:18:46,131 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:46,131 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:18:46,131 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:46,131 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:18:46,131 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:46,131 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:46,131 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:46,132 INFO  L423      AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:46,132 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:46,132 INFO  L82        PathProgramCache]: Analyzing trace with hash -1654400459, now seen corresponding path program 36 times
[2018-10-03 09:18:46,132 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:46,132 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:46,133 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:46,133 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:46,133 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:46,135 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:46,181 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:46,182 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:46,182 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:46,190 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:18:46,199 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2018-10-03 09:18:46,199 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:46,200 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:46,227 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:46,248 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:46,249 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:46,249 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:46,249 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:46,249 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:46,249 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 8 states.
[2018-10-03 09:18:46,287 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:46,287 INFO  L93              Difference]: Finished difference Result 27 states and 37 transitions.
[2018-10-03 09:18:46,287 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:46,287 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:46,287 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:46,288 INFO  L225             Difference]: With dead ends: 27
[2018-10-03 09:18:46,288 INFO  L226             Difference]: Without dead ends: 25
[2018-10-03 09:18:46,288 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:46,288 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2018-10-03 09:18:46,303 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22.
[2018-10-03 09:18:46,303 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:46,304 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:46,304 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13
[2018-10-03 09:18:46,304 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:46,304 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:46,304 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:46,304 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:46,304 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:46,304 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:46,305 INFO  L375         BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1]
[2018-10-03 09:18:46,305 INFO  L423      AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:46,305 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:46,305 INFO  L82        PathProgramCache]: Analyzing trace with hash -1654398537, now seen corresponding path program 37 times
[2018-10-03 09:18:46,305 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:46,305 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:46,306 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:46,306 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:46,306 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:46,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:46,358 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:46,358 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:46,359 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:46,368 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:46,372 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:46,373 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:46,408 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:46,438 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:46,438 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:46,438 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:46,438 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:46,438 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:46,438 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states.
[2018-10-03 09:18:46,532 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:46,532 INFO  L93              Difference]: Finished difference Result 26 states and 36 transitions.
[2018-10-03 09:18:46,532 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:46,532 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:46,533 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:46,533 INFO  L225             Difference]: With dead ends: 26
[2018-10-03 09:18:46,533 INFO  L226             Difference]: Without dead ends: 24
[2018-10-03 09:18:46,533 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:46,533 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2018-10-03 09:18:46,543 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 16.
[2018-10-03 09:18:46,543 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2018-10-03 09:18:46,543 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions.
[2018-10-03 09:18:46,544 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 13
[2018-10-03 09:18:46,544 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:46,544 INFO  L480      AbstractCegarLoop]: Abstraction has 16 states and 22 transitions.
[2018-10-03 09:18:46,544 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:46,544 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions.
[2018-10-03 09:18:46,544 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:46,544 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:46,544 INFO  L375         BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1]
[2018-10-03 09:18:46,544 INFO  L423      AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:46,544 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:46,545 INFO  L82        PathProgramCache]: Analyzing trace with hash 884718641, now seen corresponding path program 38 times
[2018-10-03 09:18:46,545 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:46,545 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:46,545 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:46,545 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:46,546 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:46,547 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:46,635 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:46,635 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:46,635 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:46,643 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:46,656 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:46,656 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:46,657 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:46,683 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:46,704 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:46,705 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:46,705 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:46,705 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:46,705 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:46,705 INFO  L87              Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 8 states.
[2018-10-03 09:18:46,758 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:46,758 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:18:46,758 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:46,759 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:46,759 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:46,759 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:18:46,759 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:18:46,759 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6
[2018-10-03 09:18:46,759 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:18:46,780 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24.
[2018-10-03 09:18:46,780 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:46,780 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:46,780 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13
[2018-10-03 09:18:46,781 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:46,781 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:46,781 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:46,781 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:46,781 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:46,781 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:46,781 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:46,782 INFO  L423      AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:46,782 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:46,782 INFO  L82        PathProgramCache]: Analyzing trace with hash 884720563, now seen corresponding path program 39 times
[2018-10-03 09:18:46,782 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:46,782 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:46,783 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:46,783 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:46,783 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:46,784 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:47,303 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:47,303 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:47,304 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 49 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:47,310 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:47,317 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2018-10-03 09:18:47,317 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:47,318 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:47,337 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:47,358 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:47,358 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:47,359 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:47,359 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:47,359 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:47,359 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states.
[2018-10-03 09:18:47,420 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:47,420 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:18:47,420 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:47,420 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:47,420 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:47,421 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:18:47,421 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:18:47,421 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.3s impTime 6
[2018-10-03 09:18:47,421 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:18:47,438 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22.
[2018-10-03 09:18:47,438 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:47,438 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:47,439 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13
[2018-10-03 09:18:47,439 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:47,439 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:47,439 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:47,439 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:47,439 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:47,439 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:47,439 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:47,439 INFO  L423      AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:47,440 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:47,440 INFO  L82        PathProgramCache]: Analyzing trace with hash 886565683, now seen corresponding path program 40 times
[2018-10-03 09:18:47,440 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:47,440 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:47,440 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:47,440 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:47,441 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:47,442 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:47,480 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:47,480 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:47,480 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 50 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:47,488 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:47,493 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:47,493 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:47,494 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:47,521 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:47,542 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:47,542 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:47,543 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:47,543 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:47,543 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:47,543 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states.
[2018-10-03 09:18:47,595 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:47,595 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:18:47,596 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:47,596 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:47,596 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:47,596 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:18:47,596 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:18:47,596 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:47,597 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:18:47,615 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24.
[2018-10-03 09:18:47,616 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:47,616 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:47,616 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13
[2018-10-03 09:18:47,616 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:47,616 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:47,616 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:47,616 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:47,617 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:47,617 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:47,617 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:47,617 INFO  L423      AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:47,617 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:47,617 INFO  L82        PathProgramCache]: Analyzing trace with hash 886567605, now seen corresponding path program 41 times
[2018-10-03 09:18:47,618 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:47,618 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:47,618 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:47,618 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:47,618 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:47,620 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:47,754 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:47,754 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:47,755 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 51 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:47,764 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:47,770 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2018-10-03 09:18:47,770 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:47,771 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:47,788 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:47,809 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:47,809 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:47,809 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:47,809 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:47,809 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:47,810 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states.
[2018-10-03 09:18:47,855 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:47,855 INFO  L93              Difference]: Finished difference Result 35 states and 49 transitions.
[2018-10-03 09:18:47,855 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:47,855 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:47,855 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:47,856 INFO  L225             Difference]: With dead ends: 35
[2018-10-03 09:18:47,856 INFO  L226             Difference]: Without dead ends: 33
[2018-10-03 09:18:47,856 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6
[2018-10-03 09:18:47,857 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-10-03 09:18:47,873 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 20.
[2018-10-03 09:18:47,873 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:18:47,873 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:18:47,873 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 13
[2018-10-03 09:18:47,873 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:47,873 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:18:47,874 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:47,874 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:18:47,874 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:47,874 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:47,874 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:47,874 INFO  L423      AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:47,874 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:47,875 INFO  L82        PathProgramCache]: Analyzing trace with hash -1635241293, now seen corresponding path program 42 times
[2018-10-03 09:18:47,875 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:47,875 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:47,876 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:47,876 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:47,876 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:47,877 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:47,921 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:47,921 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:47,921 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 52 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:47,931 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:18:47,940 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2018-10-03 09:18:47,940 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:47,940 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:47,960 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:47,981 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:47,981 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:47,981 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:47,982 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:47,982 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:47,982 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 8 states.
[2018-10-03 09:18:48,071 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:48,072 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:18:48,072 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:48,072 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:48,072 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:48,072 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:18:48,073 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:18:48,073 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:48,073 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:18:48,093 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24.
[2018-10-03 09:18:48,093 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:48,093 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:48,093 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13
[2018-10-03 09:18:48,093 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:48,093 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:48,093 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:48,094 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:48,094 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:48,094 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:48,094 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:48,094 INFO  L423      AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:48,094 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:48,094 INFO  L82        PathProgramCache]: Analyzing trace with hash -1635239371, now seen corresponding path program 43 times
[2018-10-03 09:18:48,094 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:48,094 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:48,095 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:48,095 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:48,095 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:48,097 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:48,140 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:48,140 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:48,140 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 53 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:48,149 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:48,153 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:48,154 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:48,244 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:48,264 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:48,264 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:48,264 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:48,264 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:48,264 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:48,264 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states.
[2018-10-03 09:18:48,330 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:48,331 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:18:48,331 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:48,331 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:48,331 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:48,331 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:18:48,331 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:18:48,332 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6
[2018-10-03 09:18:48,332 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:18:48,353 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22.
[2018-10-03 09:18:48,353 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:48,354 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:48,354 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13
[2018-10-03 09:18:48,354 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:48,354 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:48,354 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:48,354 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:48,354 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:48,354 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:48,354 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:48,355 INFO  L423      AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:48,355 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:48,355 INFO  L82        PathProgramCache]: Analyzing trace with hash -1633394251, now seen corresponding path program 44 times
[2018-10-03 09:18:48,355 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:48,355 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:48,355 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:48,356 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:48,356 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:48,357 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:48,408 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:48,408 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:48,408 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 54 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:48,417 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:48,422 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:48,422 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:48,423 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:48,443 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:48,465 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:48,465 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:48,465 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:48,465 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:48,465 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:48,466 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states.
[2018-10-03 09:18:48,538 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:48,539 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:18:48,539 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:48,539 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:48,539 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:48,540 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:18:48,540 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:18:48,540 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:48,540 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:18:48,560 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24.
[2018-10-03 09:18:48,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:48,561 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:48,561 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13
[2018-10-03 09:18:48,561 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:48,561 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:48,561 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:48,561 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:48,561 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:48,561 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:48,562 INFO  L375         BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1]
[2018-10-03 09:18:48,562 INFO  L423      AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:48,562 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:48,562 INFO  L82        PathProgramCache]: Analyzing trace with hash -1633392329, now seen corresponding path program 45 times
[2018-10-03 09:18:48,562 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:48,562 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:48,562 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:48,563 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:48,563 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:48,564 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:48,618 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:48,618 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:48,619 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 55 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:48,627 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:48,634 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2018-10-03 09:18:48,634 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:48,635 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:48,667 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:48,687 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:48,687 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:48,687 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:48,687 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:48,687 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:48,687 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states.
[2018-10-03 09:18:48,732 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:48,732 INFO  L93              Difference]: Finished difference Result 35 states and 49 transitions.
[2018-10-03 09:18:48,733 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:48,733 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:48,733 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:48,733 INFO  L225             Difference]: With dead ends: 35
[2018-10-03 09:18:48,734 INFO  L226             Difference]: Without dead ends: 33
[2018-10-03 09:18:48,734 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:48,734 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-10-03 09:18:48,752 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 18.
[2018-10-03 09:18:48,752 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2018-10-03 09:18:48,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions.
[2018-10-03 09:18:48,753 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 13
[2018-10-03 09:18:48,753 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:48,753 INFO  L480      AbstractCegarLoop]: Abstraction has 18 states and 25 transitions.
[2018-10-03 09:18:48,753 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:48,753 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions.
[2018-10-03 09:18:48,753 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:48,753 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:48,753 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:48,754 INFO  L423      AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:48,754 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:48,754 INFO  L82        PathProgramCache]: Analyzing trace with hash 1564777011, now seen corresponding path program 46 times
[2018-10-03 09:18:48,754 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:48,754 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:48,755 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:48,755 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:48,755 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:48,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:48,845 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:48,846 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:48,846 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 56 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:48,855 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:48,860 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:48,860 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:48,861 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:48,881 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:48,900 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:48,900 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:48,900 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:48,900 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:48,900 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:48,901 INFO  L87              Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 8 states.
[2018-10-03 09:18:48,957 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:48,958 INFO  L93              Difference]: Finished difference Result 35 states and 49 transitions.
[2018-10-03 09:18:48,958 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:48,958 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:48,958 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:48,958 INFO  L225             Difference]: With dead ends: 35
[2018-10-03 09:18:48,959 INFO  L226             Difference]: Without dead ends: 33
[2018-10-03 09:18:48,959 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6
[2018-10-03 09:18:48,959 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-10-03 09:18:48,984 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24.
[2018-10-03 09:18:48,984 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:48,985 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:48,985 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13
[2018-10-03 09:18:48,985 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:48,985 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:48,985 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:48,985 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:48,985 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:48,985 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:48,985 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:48,986 INFO  L423      AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:48,986 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:48,986 INFO  L82        PathProgramCache]: Analyzing trace with hash 1564778933, now seen corresponding path program 47 times
[2018-10-03 09:18:48,986 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:48,986 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:48,986 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:48,986 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:48,987 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:48,988 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:49,037 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:49,037 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:49,038 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 57 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:49,047 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:49,053 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2018-10-03 09:18:49,054 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:49,055 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:49,102 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:49,124 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:49,125 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:49,125 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:49,125 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:49,125 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:49,125 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states.
[2018-10-03 09:18:49,184 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:49,184 INFO  L93              Difference]: Finished difference Result 33 states and 46 transitions.
[2018-10-03 09:18:49,185 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:49,185 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:49,185 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:49,185 INFO  L225             Difference]: With dead ends: 33
[2018-10-03 09:18:49,185 INFO  L226             Difference]: Without dead ends: 31
[2018-10-03 09:18:49,186 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:49,186 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2018-10-03 09:18:49,208 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22.
[2018-10-03 09:18:49,208 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:49,208 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:49,209 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13
[2018-10-03 09:18:49,209 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:49,209 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:49,209 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:49,209 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:49,209 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:49,209 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:49,209 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:49,210 INFO  L423      AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:49,210 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:49,210 INFO  L82        PathProgramCache]: Analyzing trace with hash 1566624053, now seen corresponding path program 48 times
[2018-10-03 09:18:49,210 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:49,210 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:49,210 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:49,211 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:49,211 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:49,212 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:49,260 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:49,261 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:49,261 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 58 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:49,269 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:18:49,276 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s)
[2018-10-03 09:18:49,276 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:49,277 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:49,303 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:49,324 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:49,324 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:49,324 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:49,324 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:49,325 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:49,325 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states.
[2018-10-03 09:18:49,390 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:49,390 INFO  L93              Difference]: Finished difference Result 35 states and 49 transitions.
[2018-10-03 09:18:49,392 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:49,392 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:49,392 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:49,392 INFO  L225             Difference]: With dead ends: 35
[2018-10-03 09:18:49,393 INFO  L226             Difference]: Without dead ends: 33
[2018-10-03 09:18:49,393 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:49,393 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-10-03 09:18:49,418 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24.
[2018-10-03 09:18:49,418 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:49,419 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:49,419 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13
[2018-10-03 09:18:49,419 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:49,419 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:49,419 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:49,419 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:49,419 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:49,420 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:49,420 INFO  L375         BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1]
[2018-10-03 09:18:49,420 INFO  L423      AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:49,420 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:49,420 INFO  L82        PathProgramCache]: Analyzing trace with hash 1566625975, now seen corresponding path program 49 times
[2018-10-03 09:18:49,420 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:49,420 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:49,421 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:49,421 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:49,421 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:49,423 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:49,507 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:49,507 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:49,507 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 59 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:49,527 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:49,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:49,533 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:49,570 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:49,594 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:49,594 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:49,594 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:49,594 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:49,595 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:49,595 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states.
[2018-10-03 09:18:49,759 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:49,760 INFO  L93              Difference]: Finished difference Result 33 states and 46 transitions.
[2018-10-03 09:18:49,760 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:49,760 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:49,760 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:49,761 INFO  L225             Difference]: With dead ends: 33
[2018-10-03 09:18:49,761 INFO  L226             Difference]: Without dead ends: 31
[2018-10-03 09:18:49,761 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6
[2018-10-03 09:18:49,761 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2018-10-03 09:18:49,782 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 20.
[2018-10-03 09:18:49,782 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:18:49,783 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:18:49,783 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 13
[2018-10-03 09:18:49,783 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:49,783 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:18:49,783 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:49,783 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:18:49,783 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:49,784 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:49,784 INFO  L375         BasicCegarLoop]: trace histogram [5, 3, 2, 1, 1, 1]
[2018-10-03 09:18:49,784 INFO  L423      AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:49,784 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:49,784 INFO  L82        PathProgramCache]: Analyzing trace with hash -955182923, now seen corresponding path program 50 times
[2018-10-03 09:18:49,784 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:49,784 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:49,785 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:49,785 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:49,785 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:49,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:49,856 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:49,856 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:49,856 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 60 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:49,863 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:49,868 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:49,869 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:49,869 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:49,909 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:49,928 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:49,928 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:49,929 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:49,929 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:49,929 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:49,929 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 8 states.
[2018-10-03 09:18:49,993 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:49,993 INFO  L93              Difference]: Finished difference Result 31 states and 43 transitions.
[2018-10-03 09:18:49,993 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:49,993 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:49,993 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:49,994 INFO  L225             Difference]: With dead ends: 31
[2018-10-03 09:18:49,994 INFO  L226             Difference]: Without dead ends: 29
[2018-10-03 09:18:49,994 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 6
[2018-10-03 09:18:49,994 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-10-03 09:18:50,016 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24.
[2018-10-03 09:18:50,017 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:50,017 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:50,017 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13
[2018-10-03 09:18:50,017 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:50,017 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:50,017 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:50,017 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:50,018 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:50,018 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:50,018 INFO  L375         BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1]
[2018-10-03 09:18:50,018 INFO  L423      AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:50,018 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:50,018 INFO  L82        PathProgramCache]: Analyzing trace with hash -955181001, now seen corresponding path program 51 times
[2018-10-03 09:18:50,018 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:50,019 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:50,019 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,019 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,019 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,020 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:50,055 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:50,055 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:50,056 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 61 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:50,065 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:50,074 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2018-10-03 09:18:50,074 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:50,075 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:50,107 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:50,127 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:50,127 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:50,127 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:50,128 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:50,128 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:50,128 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states.
[2018-10-03 09:18:50,216 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:50,217 INFO  L93              Difference]: Finished difference Result 31 states and 43 transitions.
[2018-10-03 09:18:50,217 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:50,217 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:50,217 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:50,217 INFO  L225             Difference]: With dead ends: 31
[2018-10-03 09:18:50,217 INFO  L226             Difference]: Without dead ends: 29
[2018-10-03 09:18:50,218 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:50,218 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-10-03 09:18:50,239 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22.
[2018-10-03 09:18:50,239 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:50,240 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:50,240 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 13
[2018-10-03 09:18:50,240 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:50,240 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:50,240 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:50,240 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:50,240 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:50,240 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:50,240 INFO  L375         BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1]
[2018-10-03 09:18:50,241 INFO  L423      AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:50,241 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:50,241 INFO  L82        PathProgramCache]: Analyzing trace with hash -953335881, now seen corresponding path program 52 times
[2018-10-03 09:18:50,241 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:50,241 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:50,241 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,241 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,242 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,243 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:50,287 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:50,287 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:50,288 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 62 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:50,295 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:50,328 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:50,329 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:50,329 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:50,364 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:50,386 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:50,386 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:50,386 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:50,386 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:50,386 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:50,387 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 8 states.
[2018-10-03 09:18:50,435 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:50,435 INFO  L93              Difference]: Finished difference Result 29 states and 40 transitions.
[2018-10-03 09:18:50,435 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:50,435 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:50,435 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:50,436 INFO  L225             Difference]: With dead ends: 29
[2018-10-03 09:18:50,436 INFO  L226             Difference]: Without dead ends: 27
[2018-10-03 09:18:50,436 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:50,436 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2018-10-03 09:18:50,460 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24.
[2018-10-03 09:18:50,460 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:50,460 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:50,460 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 13
[2018-10-03 09:18:50,460 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:50,460 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:50,460 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:50,460 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:50,461 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-10-03 09:18:50,461 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:50,461 INFO  L375         BasicCegarLoop]: trace histogram [5, 5, 1, 1, 1]
[2018-10-03 09:18:50,461 INFO  L423      AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:50,461 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:50,461 INFO  L82        PathProgramCache]: Analyzing trace with hash -953333959, now seen corresponding path program 5 times
[2018-10-03 09:18:50,461 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:50,461 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:50,462 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,462 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,462 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:50,514 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:50,515 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:50,515 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 63 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:50,524 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:50,530 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2018-10-03 09:18:50,531 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:50,531 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:50,550 INFO  L134       CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:50,572 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:50,572 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7
[2018-10-03 09:18:50,572 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-10-03 09:18:50,572 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-10-03 09:18:50,573 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:50,573 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 8 states.
[2018-10-03 09:18:50,623 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:50,624 INFO  L93              Difference]: Finished difference Result 28 states and 39 transitions.
[2018-10-03 09:18:50,624 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2018-10-03 09:18:50,624 INFO  L78                 Accepts]: Start accepts. Automaton has 8 states. Word has length 13
[2018-10-03 09:18:50,624 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:50,624 INFO  L225             Difference]: With dead ends: 28
[2018-10-03 09:18:50,624 INFO  L226             Difference]: Without dead ends: 26
[2018-10-03 09:18:50,625 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 6
[2018-10-03 09:18:50,625 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2018-10-03 09:18:50,642 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 16.
[2018-10-03 09:18:50,642 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2018-10-03 09:18:50,642 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 22 transitions.
[2018-10-03 09:18:50,642 INFO  L78                 Accepts]: Start accepts. Automaton has 16 states and 22 transitions. Word has length 13
[2018-10-03 09:18:50,642 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:50,642 INFO  L480      AbstractCegarLoop]: Abstraction has 16 states and 22 transitions.
[2018-10-03 09:18:50,642 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-10-03 09:18:50,642 INFO  L276                IsEmpty]: Start isEmpty. Operand 16 states and 22 transitions.
[2018-10-03 09:18:50,643 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:50,643 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:50,643 INFO  L375         BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1]
[2018-10-03 09:18:50,643 INFO  L423      AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:50,643 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:50,643 INFO  L82        PathProgramCache]: Analyzing trace with hash 397590258, now seen corresponding path program 6 times
[2018-10-03 09:18:50,643 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:50,643 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:50,644 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,644 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,644 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,645 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:50,705 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:50,706 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:50,706 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 64 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:50,715 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:18:50,726 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-10-03 09:18:50,726 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:50,727 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:50,760 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:50,784 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:50,784 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:50,784 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:50,784 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:50,784 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:50,785 INFO  L87              Difference]: Start difference. First operand 16 states and 22 transitions. Second operand 9 states.
[2018-10-03 09:18:50,864 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:50,865 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:18:50,865 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:50,865 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:50,865 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:50,866 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:18:50,866 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:18:50,866 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:50,867 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:18:50,898 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26.
[2018-10-03 09:18:50,898 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:50,898 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:50,899 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:50,899 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:50,899 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:50,899 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:50,899 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:50,899 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:50,899 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:50,900 INFO  L375         BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1]
[2018-10-03 09:18:50,900 INFO  L423      AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:50,900 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:50,900 INFO  L82        PathProgramCache]: Analyzing trace with hash 397592180, now seen corresponding path program 53 times
[2018-10-03 09:18:50,900 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:50,900 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:50,901 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,901 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,901 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:50,903 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:50,967 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:50,968 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:50,968 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 65 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:50,976 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:50,983 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2018-10-03 09:18:50,983 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:50,984 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:51,007 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:51,028 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:51,028 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:51,028 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:51,028 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:51,029 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:51,029 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:51,106 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:51,107 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:18:51,107 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:51,107 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:51,107 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:51,107 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:18:51,107 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:18:51,108 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:51,108 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:18:51,137 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24.
[2018-10-03 09:18:51,137 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:51,137 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:51,138 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15
[2018-10-03 09:18:51,138 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:51,138 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:51,138 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:51,138 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:51,138 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:51,138 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:51,138 INFO  L375         BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1]
[2018-10-03 09:18:51,138 INFO  L423      AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:51,139 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:51,139 INFO  L82        PathProgramCache]: Analyzing trace with hash 399437300, now seen corresponding path program 54 times
[2018-10-03 09:18:51,139 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:51,139 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:51,139 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:51,139 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:51,140 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:51,141 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:51,209 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:51,209 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:51,209 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 66 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:51,216 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:18:51,224 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-10-03 09:18:51,224 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:51,225 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:51,292 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:51,312 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:51,313 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:51,313 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:51,313 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:51,313 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:51,313 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states.
[2018-10-03 09:18:51,401 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:51,402 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:18:51,402 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:51,402 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:51,402 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:51,402 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:18:51,402 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:18:51,403 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:18:51,403 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:18:51,434 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26.
[2018-10-03 09:18:51,434 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:51,434 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:51,434 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:51,434 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:51,434 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:51,434 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:51,435 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:51,435 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:51,435 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:51,435 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:51,435 INFO  L423      AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:51,435 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:51,435 INFO  L82        PathProgramCache]: Analyzing trace with hash 399439222, now seen corresponding path program 55 times
[2018-10-03 09:18:51,435 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:51,435 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:51,436 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:51,436 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:51,436 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:51,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:51,490 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:51,491 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:51,491 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 67 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:51,499 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:51,505 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:51,506 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:51,531 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:51,552 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:51,553 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:51,553 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:51,553 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:51,553 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:51,553 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:51,627 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:51,628 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:18:51,628 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:51,628 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:51,628 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:51,629 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:18:51,629 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:18:51,629 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:51,630 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:18:51,658 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 22.
[2018-10-03 09:18:51,658 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:51,658 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:51,658 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 15
[2018-10-03 09:18:51,658 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:51,658 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:51,659 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:51,659 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:51,659 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:51,659 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:51,659 INFO  L375         BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1]
[2018-10-03 09:18:51,659 INFO  L423      AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:51,659 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:51,659 INFO  L82        PathProgramCache]: Analyzing trace with hash -2122369676, now seen corresponding path program 56 times
[2018-10-03 09:18:51,659 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:51,660 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:51,660 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:51,660 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:51,660 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:51,662 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:51,722 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:51,722 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:51,723 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 68 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:51,730 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:51,735 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:51,735 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:51,736 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:51,760 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:51,781 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:51,782 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:51,782 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:51,782 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:51,782 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:51,782 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 9 states.
[2018-10-03 09:18:51,865 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:51,866 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:18:51,866 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:51,866 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:51,866 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:51,867 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:18:51,867 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:18:51,867 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:51,868 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:18:51,900 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26.
[2018-10-03 09:18:51,900 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:51,900 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:51,901 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:51,901 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:51,901 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:51,901 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:51,901 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:51,901 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:51,901 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:51,901 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:51,901 INFO  L423      AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:51,902 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:51,902 INFO  L82        PathProgramCache]: Analyzing trace with hash -2122367754, now seen corresponding path program 57 times
[2018-10-03 09:18:51,902 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:51,902 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:51,902 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:51,902 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:51,903 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:51,904 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:52,388 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:52,388 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:52,388 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 69 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:52,395 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:52,402 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2018-10-03 09:18:52,402 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:52,403 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:52,421 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:52,443 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:52,443 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:52,443 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:52,443 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:52,443 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:52,443 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:52,530 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:52,530 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:18:52,530 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:52,531 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:52,531 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:52,531 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:18:52,531 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:18:52,531 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.3s impTime 7
[2018-10-03 09:18:52,531 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:18:52,561 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24.
[2018-10-03 09:18:52,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:52,561 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:52,562 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15
[2018-10-03 09:18:52,562 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:52,562 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:52,562 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:52,562 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:52,562 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:52,562 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:52,562 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:52,562 INFO  L423      AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:52,562 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:52,563 INFO  L82        PathProgramCache]: Analyzing trace with hash -2120522634, now seen corresponding path program 58 times
[2018-10-03 09:18:52,563 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:52,563 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:52,563 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:52,563 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:52,563 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:52,565 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:52,629 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:52,629 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:52,629 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 70 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:52,637 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:52,659 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:52,660 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:52,660 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:52,687 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:52,711 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:52,711 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:52,711 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:52,711 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:52,711 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:52,712 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states.
[2018-10-03 09:18:52,799 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:52,800 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:18:52,800 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:52,800 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:52,800 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:52,801 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:18:52,801 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:18:52,801 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:52,801 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:18:52,833 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26.
[2018-10-03 09:18:52,833 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:52,833 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:52,833 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:52,834 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:52,834 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:52,834 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:52,834 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:52,834 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:52,834 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:52,834 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:18:52,834 INFO  L423      AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:52,834 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:52,834 INFO  L82        PathProgramCache]: Analyzing trace with hash -2120520712, now seen corresponding path program 59 times
[2018-10-03 09:18:52,835 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:52,835 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:52,835 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:52,835 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:52,835 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:52,836 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:52,884 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:52,885 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:52,885 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 71 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:52,894 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:52,905 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2018-10-03 09:18:52,905 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:52,906 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:52,963 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:52,984 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:52,984 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:52,985 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:52,985 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:52,985 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:52,985 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:53,077 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:53,077 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:18:53,077 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:53,077 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:53,078 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:53,078 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:18:53,078 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:18:53,078 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:53,078 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:18:53,106 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20.
[2018-10-03 09:18:53,106 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:18:53,106 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:18:53,106 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 15
[2018-10-03 09:18:53,106 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:53,106 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:18:53,106 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:53,107 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:18:53,107 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:53,107 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:53,107 INFO  L375         BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1]
[2018-10-03 09:18:53,107 INFO  L423      AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:53,107 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:53,107 INFO  L82        PathProgramCache]: Analyzing trace with hash 1077648628, now seen corresponding path program 60 times
[2018-10-03 09:18:53,107 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:53,107 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:53,108 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:53,108 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:53,108 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:53,109 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:53,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:53,164 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:53,164 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 72 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:53,173 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:18:53,180 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-10-03 09:18:53,180 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:53,181 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:53,221 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:53,244 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:53,244 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:53,244 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:53,245 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:53,245 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:53,245 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 9 states.
[2018-10-03 09:18:53,324 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:53,325 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:18:53,325 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:53,325 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:53,325 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:53,325 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:18:53,325 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:18:53,326 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:53,326 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:18:53,359 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26.
[2018-10-03 09:18:53,360 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:53,360 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:53,360 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:53,360 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:53,360 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:53,360 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:53,360 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:53,360 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:53,360 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:53,361 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:53,361 INFO  L423      AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:53,361 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:53,361 INFO  L82        PathProgramCache]: Analyzing trace with hash 1077650550, now seen corresponding path program 61 times
[2018-10-03 09:18:53,361 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:53,361 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:53,361 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:53,362 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:53,362 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:53,363 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:53,496 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:53,497 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:53,497 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 73 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:53,505 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:53,509 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:53,510 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:53,542 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:53,563 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:53,563 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:53,563 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:53,563 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:53,563 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:53,563 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:53,646 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:53,646 INFO  L93              Difference]: Finished difference Result 35 states and 49 transitions.
[2018-10-03 09:18:53,646 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:53,646 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:53,647 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:53,647 INFO  L225             Difference]: With dead ends: 35
[2018-10-03 09:18:53,647 INFO  L226             Difference]: Without dead ends: 33
[2018-10-03 09:18:53,648 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:18:53,648 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-10-03 09:18:53,686 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24.
[2018-10-03 09:18:53,686 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:53,686 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:53,687 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15
[2018-10-03 09:18:53,687 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:53,687 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:53,687 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:53,687 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:53,687 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:53,687 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:53,688 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:53,688 INFO  L423      AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:53,688 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:53,688 INFO  L82        PathProgramCache]: Analyzing trace with hash 1079495670, now seen corresponding path program 62 times
[2018-10-03 09:18:53,688 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:53,688 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:53,689 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:53,689 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:53,689 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:53,691 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:53,749 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:53,749 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:53,749 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 74 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:53,758 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:53,763 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:53,763 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:53,764 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:53,791 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:53,812 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:53,812 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:53,812 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:53,812 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:53,812 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:53,813 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states.
[2018-10-03 09:18:53,914 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:53,915 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:18:53,915 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:53,916 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:53,916 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:53,916 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:18:53,916 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:18:53,917 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:53,917 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:18:53,956 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26.
[2018-10-03 09:18:53,957 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:53,957 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:53,957 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:53,957 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:53,957 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:53,957 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:53,957 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:53,958 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:53,958 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:53,958 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:18:53,958 INFO  L423      AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:53,958 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:53,958 INFO  L82        PathProgramCache]: Analyzing trace with hash 1079497592, now seen corresponding path program 63 times
[2018-10-03 09:18:53,959 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:53,959 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:53,959 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:53,959 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:53,960 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:53,961 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:54,038 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:54,038 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:54,038 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 75 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:54,046 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:54,057 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2018-10-03 09:18:54,058 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:54,058 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:54,096 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:54,118 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:54,118 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:54,118 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:54,118 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:54,118 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:54,118 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:54,192 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:54,192 INFO  L93              Difference]: Finished difference Result 35 states and 49 transitions.
[2018-10-03 09:18:54,192 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:54,192 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:54,192 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:54,193 INFO  L225             Difference]: With dead ends: 35
[2018-10-03 09:18:54,193 INFO  L226             Difference]: Without dead ends: 33
[2018-10-03 09:18:54,193 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:18:54,193 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-10-03 09:18:54,222 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22.
[2018-10-03 09:18:54,222 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:54,223 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:54,223 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 15
[2018-10-03 09:18:54,223 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:54,223 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:54,223 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:54,223 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:54,223 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:54,223 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:54,223 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:54,224 INFO  L423      AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:54,224 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:54,224 INFO  L82        PathProgramCache]: Analyzing trace with hash -1442311306, now seen corresponding path program 64 times
[2018-10-03 09:18:54,224 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:54,224 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:54,224 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:54,224 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:54,225 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:54,226 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:54,469 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:54,469 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:54,469 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 76 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:54,477 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:54,482 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:54,482 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:54,483 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:54,510 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:54,532 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:54,532 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:54,532 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:54,532 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:54,532 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:54,532 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 9 states.
[2018-10-03 09:18:54,594 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:54,594 INFO  L93              Difference]: Finished difference Result 33 states and 46 transitions.
[2018-10-03 09:18:54,594 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:54,594 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:54,594 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:54,595 INFO  L225             Difference]: With dead ends: 33
[2018-10-03 09:18:54,595 INFO  L226             Difference]: Without dead ends: 31
[2018-10-03 09:18:54,595 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 7
[2018-10-03 09:18:54,595 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2018-10-03 09:18:54,631 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26.
[2018-10-03 09:18:54,631 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:54,631 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:54,632 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:54,632 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:54,632 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:54,632 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:54,632 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:54,632 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:54,632 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:54,632 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:18:54,632 INFO  L423      AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:54,632 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:54,633 INFO  L82        PathProgramCache]: Analyzing trace with hash -1442309384, now seen corresponding path program 65 times
[2018-10-03 09:18:54,633 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:54,633 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:54,633 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:54,633 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:54,633 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:54,634 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:54,729 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:54,729 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:54,729 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 77 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:54,737 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:54,751 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2018-10-03 09:18:54,751 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:54,752 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:54,792 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:54,812 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:54,812 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:54,812 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:54,813 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:54,813 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:54,813 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:54,889 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:54,889 INFO  L93              Difference]: Finished difference Result 33 states and 46 transitions.
[2018-10-03 09:18:54,889 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:54,889 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:54,889 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:54,890 INFO  L225             Difference]: With dead ends: 33
[2018-10-03 09:18:54,890 INFO  L226             Difference]: Without dead ends: 31
[2018-10-03 09:18:54,890 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:18:54,890 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2018-10-03 09:18:54,924 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24.
[2018-10-03 09:18:54,925 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:54,925 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:54,925 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15
[2018-10-03 09:18:54,925 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:54,925 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:54,925 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:54,925 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:54,925 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:54,926 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:54,926 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:18:54,926 INFO  L423      AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:54,926 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:54,926 INFO  L82        PathProgramCache]: Analyzing trace with hash -1440464264, now seen corresponding path program 66 times
[2018-10-03 09:18:54,926 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:54,926 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:54,927 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:54,927 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:54,927 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:54,928 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:55,216 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:55,216 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:55,216 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 78 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:55,223 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:18:55,231 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-10-03 09:18:55,231 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:55,232 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:55,254 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:55,275 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:55,276 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:55,276 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:55,276 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:55,276 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:55,276 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states.
[2018-10-03 09:18:55,343 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:55,344 INFO  L93              Difference]: Finished difference Result 31 states and 43 transitions.
[2018-10-03 09:18:55,344 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:55,344 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:55,344 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:55,344 INFO  L225             Difference]: With dead ends: 31
[2018-10-03 09:18:55,344 INFO  L226             Difference]: Without dead ends: 29
[2018-10-03 09:18:55,345 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.1s impTime 7
[2018-10-03 09:18:55,345 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-10-03 09:18:55,380 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26.
[2018-10-03 09:18:55,380 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:55,381 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:55,381 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:55,381 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:55,381 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:55,381 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:55,381 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:55,381 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:55,381 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:55,381 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:55,382 INFO  L423      AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:55,382 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:55,382 INFO  L82        PathProgramCache]: Analyzing trace with hash -1440462342, now seen corresponding path program 67 times
[2018-10-03 09:18:55,382 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:55,382 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:55,382 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:55,382 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:55,382 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:55,383 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:55,430 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:55,430 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:55,430 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 79 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:55,437 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:55,450 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:55,451 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:55,494 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:55,514 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:55,514 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:55,514 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:55,514 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:55,514 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:55,515 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:55,575 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:55,575 INFO  L93              Difference]: Finished difference Result 30 states and 42 transitions.
[2018-10-03 09:18:55,576 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:55,576 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:55,576 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:55,576 INFO  L225             Difference]: With dead ends: 30
[2018-10-03 09:18:55,577 INFO  L226             Difference]: Without dead ends: 28
[2018-10-03 09:18:55,577 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:55,577 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2018-10-03 09:18:55,603 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18.
[2018-10-03 09:18:55,603 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2018-10-03 09:18:55,603 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions.
[2018-10-03 09:18:55,603 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 15
[2018-10-03 09:18:55,603 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:55,603 INFO  L480      AbstractCegarLoop]: Abstraction has 18 states and 25 transitions.
[2018-10-03 09:18:55,603 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:55,603 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions.
[2018-10-03 09:18:55,604 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:55,604 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:55,604 INFO  L375         BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1]
[2018-10-03 09:18:55,604 INFO  L423      AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:55,604 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:55,604 INFO  L82        PathProgramCache]: Analyzing trace with hash 1098654836, now seen corresponding path program 68 times
[2018-10-03 09:18:55,604 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:55,604 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:55,605 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:55,605 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:55,605 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:55,606 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:55,690 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:55,690 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:55,690 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 80 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:55,699 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:55,707 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:55,707 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:55,708 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:55,739 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:55,761 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:55,761 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:55,761 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:55,761 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:55,761 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:55,761 INFO  L87              Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 9 states.
[2018-10-03 09:18:55,866 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:55,867 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:18:55,867 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:55,867 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:55,867 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:55,867 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:18:55,867 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:18:55,868 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:18:55,868 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:18:55,908 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26.
[2018-10-03 09:18:55,908 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:55,908 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:55,908 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:55,908 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:55,908 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:55,909 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:55,909 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:55,909 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:55,909 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:55,909 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:55,909 INFO  L423      AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:55,909 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:55,909 INFO  L82        PathProgramCache]: Analyzing trace with hash 1098656758, now seen corresponding path program 69 times
[2018-10-03 09:18:55,909 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:55,910 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:55,910 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:55,910 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:55,910 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:55,911 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:55,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:55,968 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:55,968 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 81 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:55,976 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:55,984 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2018-10-03 09:18:55,984 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:55,985 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:56,026 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:56,045 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:56,046 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:56,046 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:56,046 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:56,046 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:56,046 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:56,145 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:56,146 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:18:56,146 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:56,146 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:56,146 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:56,147 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:18:56,147 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:18:56,147 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:56,147 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:18:56,186 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24.
[2018-10-03 09:18:56,186 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:56,186 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:56,187 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15
[2018-10-03 09:18:56,187 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:56,187 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:56,187 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:56,187 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:56,187 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:56,187 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:56,187 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:56,187 INFO  L423      AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:56,187 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:56,188 INFO  L82        PathProgramCache]: Analyzing trace with hash 1100501878, now seen corresponding path program 70 times
[2018-10-03 09:18:56,188 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:56,188 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:56,188 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:56,188 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:56,189 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:56,189 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:56,236 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:56,236 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:56,236 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 82 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:56,243 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:56,251 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:56,252 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:56,252 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:56,294 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:56,314 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:56,314 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:56,314 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:56,314 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:56,314 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:56,314 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states.
[2018-10-03 09:18:56,406 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:56,407 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:18:56,407 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:56,407 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:56,407 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:56,408 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:18:56,408 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:18:56,408 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:56,408 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:18:56,450 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26.
[2018-10-03 09:18:56,450 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:56,450 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:56,451 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:56,451 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:56,451 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:56,451 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:56,451 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:56,451 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:56,451 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:56,451 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:18:56,451 INFO  L423      AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:56,451 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:56,452 INFO  L82        PathProgramCache]: Analyzing trace with hash 1100503800, now seen corresponding path program 71 times
[2018-10-03 09:18:56,452 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:56,452 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:56,452 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:56,452 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:56,452 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:56,453 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:56,510 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:56,510 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:56,510 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 83 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:56,519 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:56,530 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2018-10-03 09:18:56,530 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:56,531 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:56,563 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:56,582 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:56,582 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:56,583 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:56,583 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:56,583 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:56,583 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:56,687 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:56,688 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:18:56,688 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:56,688 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:56,688 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:56,688 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:18:56,688 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:18:56,689 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:56,689 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:18:56,722 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 22.
[2018-10-03 09:18:56,722 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:56,722 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:56,722 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 15
[2018-10-03 09:18:56,723 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:56,723 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:56,723 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:56,723 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:56,723 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:56,723 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:56,723 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:56,723 INFO  L423      AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:56,723 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:56,723 INFO  L82        PathProgramCache]: Analyzing trace with hash -1421305098, now seen corresponding path program 72 times
[2018-10-03 09:18:56,724 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:56,724 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:56,724 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:56,724 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:56,724 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:56,725 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:56,806 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:56,806 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:56,806 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 84 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:56,814 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:18:56,821 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-10-03 09:18:56,822 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:56,823 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:56,841 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:56,862 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:56,863 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:56,863 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:56,863 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:56,863 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:56,863 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 9 states.
[2018-10-03 09:18:56,971 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:56,972 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:18:56,972 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:56,972 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:56,972 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:56,973 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:18:56,973 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:18:56,973 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:56,974 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:18:57,019 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26.
[2018-10-03 09:18:57,019 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:57,020 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:57,020 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:57,020 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:57,020 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:57,020 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:57,020 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:57,020 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:57,020 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:57,020 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:18:57,021 INFO  L423      AbstractCegarLoop]: === Iteration 85 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:57,021 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:57,021 INFO  L82        PathProgramCache]: Analyzing trace with hash -1421303176, now seen corresponding path program 73 times
[2018-10-03 09:18:57,021 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:57,021 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:57,022 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:57,022 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:57,022 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:57,023 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:57,082 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:57,082 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:57,082 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 85 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:57,094 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:57,100 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:57,101 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:57,135 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:57,156 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:57,156 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:57,156 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:57,156 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:57,156 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:57,157 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:57,259 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:57,260 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:18:57,260 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:57,260 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:57,260 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:57,261 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:18:57,261 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:18:57,261 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:57,261 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:18:57,303 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24.
[2018-10-03 09:18:57,303 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:57,303 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:57,304 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15
[2018-10-03 09:18:57,304 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:57,304 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:57,304 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:57,304 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:57,304 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:57,304 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:57,304 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:18:57,305 INFO  L423      AbstractCegarLoop]: === Iteration 86 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:57,305 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:57,305 INFO  L82        PathProgramCache]: Analyzing trace with hash -1419458056, now seen corresponding path program 74 times
[2018-10-03 09:18:57,305 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:57,305 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:57,307 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:57,307 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:57,307 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:57,309 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:57,373 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:57,374 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:57,374 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 86 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:57,382 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:57,387 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:57,387 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:57,387 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:57,422 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:57,444 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:57,444 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:57,444 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:57,444 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:57,444 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:57,444 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states.
[2018-10-03 09:18:57,542 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:57,543 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:18:57,543 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:57,543 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:57,544 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:57,544 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:18:57,544 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:18:57,545 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:57,545 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:18:57,588 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26.
[2018-10-03 09:18:57,589 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:57,589 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:57,589 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:57,589 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:57,589 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:57,590 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:57,590 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:57,590 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:57,590 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:57,590 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:57,590 INFO  L423      AbstractCegarLoop]: === Iteration 87 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:57,590 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:57,590 INFO  L82        PathProgramCache]: Analyzing trace with hash -1419456134, now seen corresponding path program 75 times
[2018-10-03 09:18:57,591 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:57,591 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:57,591 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:57,591 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:57,591 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:57,592 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:57,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:57,653 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:57,653 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 87 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:57,661 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:57,669 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2018-10-03 09:18:57,670 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:57,671 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:57,705 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:57,729 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:57,729 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:57,730 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:57,730 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:57,730 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:57,730 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:57,818 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:57,819 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:18:57,819 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:57,819 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:57,819 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:57,819 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:18:57,819 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:18:57,820 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:57,820 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:18:57,851 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20.
[2018-10-03 09:18:57,851 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:18:57,851 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:18:57,851 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 15
[2018-10-03 09:18:57,852 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:57,852 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:18:57,852 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:57,852 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:18:57,852 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:57,852 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:57,852 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:57,852 INFO  L423      AbstractCegarLoop]: === Iteration 88 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:57,852 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:57,852 INFO  L82        PathProgramCache]: Analyzing trace with hash 1778713206, now seen corresponding path program 76 times
[2018-10-03 09:18:57,852 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:57,853 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:57,853 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:57,853 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:57,853 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:57,854 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:57,915 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:57,915 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:57,915 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 88 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:57,924 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:57,932 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:57,933 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:57,933 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:57,971 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:57,993 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:57,993 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:57,994 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:57,994 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:57,994 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:57,994 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 9 states.
[2018-10-03 09:18:58,102 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:58,102 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:18:58,102 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:58,102 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:58,103 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:58,103 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:18:58,104 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:18:58,104 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:58,104 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:18:58,153 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26.
[2018-10-03 09:18:58,153 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:58,153 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:58,153 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:58,154 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:58,154 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:58,154 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:58,154 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:58,154 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:58,154 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:58,154 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:18:58,154 INFO  L423      AbstractCegarLoop]: === Iteration 89 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:58,154 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:58,155 INFO  L82        PathProgramCache]: Analyzing trace with hash 1778715128, now seen corresponding path program 77 times
[2018-10-03 09:18:58,155 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:58,155 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:58,155 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:58,155 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:58,155 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:58,157 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:58,256 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:58,256 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:58,256 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 89 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:58,264 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:18:58,271 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2018-10-03 09:18:58,271 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:58,272 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:58,309 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:58,329 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:58,330 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:58,330 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:58,330 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:58,330 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:58,330 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:58,420 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:58,421 INFO  L93              Difference]: Finished difference Result 35 states and 49 transitions.
[2018-10-03 09:18:58,421 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:58,421 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:58,422 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:58,422 INFO  L225             Difference]: With dead ends: 35
[2018-10-03 09:18:58,422 INFO  L226             Difference]: Without dead ends: 33
[2018-10-03 09:18:58,422 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:18:58,422 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-10-03 09:18:58,464 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24.
[2018-10-03 09:18:58,464 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:58,464 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:58,464 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15
[2018-10-03 09:18:58,465 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:58,465 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:58,465 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:58,465 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:58,465 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:58,465 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:58,465 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:18:58,465 INFO  L423      AbstractCegarLoop]: === Iteration 90 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:58,465 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:58,465 INFO  L82        PathProgramCache]: Analyzing trace with hash 1780560248, now seen corresponding path program 78 times
[2018-10-03 09:18:58,465 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:58,466 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:58,466 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:58,466 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:58,466 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:58,467 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:58,524 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:58,525 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:58,525 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 90 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:58,533 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:18:58,544 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-10-03 09:18:58,545 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:58,546 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:58,590 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:58,609 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:58,610 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:58,610 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:58,610 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:58,610 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:58,610 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states.
[2018-10-03 09:18:58,708 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:58,709 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:18:58,709 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:58,709 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:58,709 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:58,710 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:18:58,710 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:18:58,710 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:58,710 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:18:58,774 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26.
[2018-10-03 09:18:58,774 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:58,774 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:58,774 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:58,774 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:58,775 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:58,775 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:58,775 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:58,775 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:58,775 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:58,775 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:58,775 INFO  L423      AbstractCegarLoop]: === Iteration 91 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:58,775 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:58,776 INFO  L82        PathProgramCache]: Analyzing trace with hash 1780562170, now seen corresponding path program 79 times
[2018-10-03 09:18:58,776 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:58,776 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:58,776 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:58,776 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:58,777 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:58,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:58,865 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:58,866 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:58,866 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 91 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:58,873 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:58,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:58,878 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:58,896 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:58,918 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:58,918 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:58,918 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:58,918 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:58,918 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:58,919 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:59,023 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:59,023 INFO  L93              Difference]: Finished difference Result 35 states and 49 transitions.
[2018-10-03 09:18:59,023 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:59,023 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:59,023 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:59,024 INFO  L225             Difference]: With dead ends: 35
[2018-10-03 09:18:59,024 INFO  L226             Difference]: Without dead ends: 33
[2018-10-03 09:18:59,024 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:59,024 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-10-03 09:18:59,061 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 22.
[2018-10-03 09:18:59,061 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:18:59,061 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:18:59,061 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 15
[2018-10-03 09:18:59,061 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:59,061 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:18:59,062 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:59,062 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:18:59,062 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:59,062 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:59,062 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:18:59,062 INFO  L423      AbstractCegarLoop]: === Iteration 92 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:59,062 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:59,062 INFO  L82        PathProgramCache]: Analyzing trace with hash -741246728, now seen corresponding path program 80 times
[2018-10-03 09:18:59,062 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:59,062 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:59,063 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:59,063 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:18:59,063 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:59,064 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:59,121 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:59,122 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:59,122 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 92 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:59,131 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:18:59,136 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:18:59,136 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:59,137 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:59,162 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:59,184 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:59,184 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:59,184 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:59,185 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:59,185 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:59,185 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 9 states.
[2018-10-03 09:18:59,273 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:59,273 INFO  L93              Difference]: Finished difference Result 33 states and 46 transitions.
[2018-10-03 09:18:59,273 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:59,274 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:59,274 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:59,274 INFO  L225             Difference]: With dead ends: 33
[2018-10-03 09:18:59,274 INFO  L226             Difference]: Without dead ends: 31
[2018-10-03 09:18:59,275 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:59,275 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2018-10-03 09:18:59,320 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26.
[2018-10-03 09:18:59,320 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:59,321 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:59,321 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:59,321 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:59,321 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:59,321 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:59,321 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:59,321 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:59,321 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:59,321 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:59,322 INFO  L423      AbstractCegarLoop]: === Iteration 93 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:59,322 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:59,322 INFO  L82        PathProgramCache]: Analyzing trace with hash -741244806, now seen corresponding path program 81 times
[2018-10-03 09:18:59,322 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:59,322 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:59,322 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:59,323 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:59,323 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:59,324 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:59,510 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:59,511 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:59,511 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 93 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:59,520 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:18:59,527 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2018-10-03 09:18:59,527 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:59,528 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:59,556 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:59,577 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:59,577 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:59,578 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:59,578 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:59,578 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:59,578 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:18:59,659 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:59,660 INFO  L93              Difference]: Finished difference Result 33 states and 46 transitions.
[2018-10-03 09:18:59,660 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:59,660 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:59,660 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:59,661 INFO  L225             Difference]: With dead ends: 33
[2018-10-03 09:18:59,661 INFO  L226             Difference]: Without dead ends: 31
[2018-10-03 09:18:59,661 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 7
[2018-10-03 09:18:59,662 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2018-10-03 09:18:59,712 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24.
[2018-10-03 09:18:59,712 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:18:59,712 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:18:59,712 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15
[2018-10-03 09:18:59,713 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:59,713 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:18:59,713 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:59,713 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:18:59,713 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:59,713 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:59,713 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:18:59,714 INFO  L423      AbstractCegarLoop]: === Iteration 94 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:59,714 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:59,714 INFO  L82        PathProgramCache]: Analyzing trace with hash -739399686, now seen corresponding path program 82 times
[2018-10-03 09:18:59,714 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:59,714 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:59,715 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:59,715 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:59,715 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:59,716 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:18:59,782 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:59,782 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:18:59,782 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 94 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:18:59,790 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:18:59,795 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:18:59,795 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:18:59,796 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:18:59,819 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:18:59,842 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:18:59,842 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:18:59,842 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:18:59,843 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:18:59,843 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:18:59,843 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states.
[2018-10-03 09:18:59,938 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:18:59,939 INFO  L93              Difference]: Finished difference Result 31 states and 43 transitions.
[2018-10-03 09:18:59,939 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:18:59,939 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:18:59,939 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:18:59,939 INFO  L225             Difference]: With dead ends: 31
[2018-10-03 09:18:59,939 INFO  L226             Difference]: Without dead ends: 29
[2018-10-03 09:18:59,940 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:18:59,940 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-10-03 09:18:59,982 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 26.
[2018-10-03 09:18:59,982 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:18:59,982 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:18:59,983 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:18:59,983 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:18:59,983 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:18:59,983 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:18:59,983 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:18:59,983 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:18:59,983 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:18:59,983 INFO  L375         BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1]
[2018-10-03 09:18:59,983 INFO  L423      AbstractCegarLoop]: === Iteration 95 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:18:59,983 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:18:59,984 INFO  L82        PathProgramCache]: Analyzing trace with hash -739397764, now seen corresponding path program 83 times
[2018-10-03 09:18:59,984 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:18:59,984 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:18:59,984 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:59,985 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:18:59,985 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:18:59,986 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:00,077 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:00,077 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:00,077 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 95 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:00,086 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:00,096 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2018-10-03 09:19:00,096 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:00,097 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:00,118 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:00,140 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:00,140 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:00,141 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:00,141 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:00,141 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:00,141 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:19:00,223 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:00,223 INFO  L93              Difference]: Finished difference Result 30 states and 42 transitions.
[2018-10-03 09:19:00,223 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:00,224 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:00,224 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:00,224 INFO  L225             Difference]: With dead ends: 30
[2018-10-03 09:19:00,224 INFO  L226             Difference]: Without dead ends: 28
[2018-10-03 09:19:00,224 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:19:00,224 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2018-10-03 09:19:00,252 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 18.
[2018-10-03 09:19:00,252 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2018-10-03 09:19:00,252 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions.
[2018-10-03 09:19:00,252 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 15
[2018-10-03 09:19:00,253 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:00,253 INFO  L480      AbstractCegarLoop]: Abstraction has 18 states and 25 transitions.
[2018-10-03 09:19:00,253 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:00,253 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions.
[2018-10-03 09:19:00,253 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:00,253 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:00,253 INFO  L375         BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1]
[2018-10-03 09:19:00,253 INFO  L423      AbstractCegarLoop]: === Iteration 96 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:00,253 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:00,254 INFO  L82        PathProgramCache]: Analyzing trace with hash -189215756, now seen corresponding path program 84 times
[2018-10-03 09:19:00,254 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:00,254 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:00,254 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:00,255 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:00,255 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:00,256 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:00,306 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:00,306 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:00,306 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 96 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:00,316 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:00,325 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-10-03 09:19:00,325 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:00,326 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:00,375 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:00,397 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:00,397 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:00,397 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:00,397 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:00,397 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:00,397 INFO  L87              Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 9 states.
[2018-10-03 09:19:00,538 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:00,539 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:19:00,539 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:00,539 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:00,539 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:00,540 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:19:00,540 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:19:00,540 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:00,540 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:19:00,596 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28.
[2018-10-03 09:19:00,596 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:00,596 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:00,596 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:00,597 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:00,597 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:00,597 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:00,597 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:00,597 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:00,597 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:00,597 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:00,598 INFO  L423      AbstractCegarLoop]: === Iteration 97 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:00,598 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:00,598 INFO  L82        PathProgramCache]: Analyzing trace with hash -189213834, now seen corresponding path program 85 times
[2018-10-03 09:19:00,598 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:00,598 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:00,599 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:00,599 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:00,599 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:00,600 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:00,663 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:00,664 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:00,664 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 97 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:00,671 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:00,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:00,688 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:00,708 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:00,729 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:00,729 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:00,730 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:00,730 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:00,730 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:00,730 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:00,873 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:00,873 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:19:00,873 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:00,873 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:00,874 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:00,874 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:19:00,874 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:19:00,874 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:00,875 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:19:00,927 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 26.
[2018-10-03 09:19:00,927 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:00,927 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:00,927 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:19:00,927 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:00,927 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:00,928 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:00,928 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:00,928 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:00,928 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:00,928 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:00,928 INFO  L423      AbstractCegarLoop]: === Iteration 98 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:00,928 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:00,928 INFO  L82        PathProgramCache]: Analyzing trace with hash -187368714, now seen corresponding path program 86 times
[2018-10-03 09:19:00,928 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:00,928 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:00,929 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:00,929 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:00,929 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:00,930 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:01,011 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:01,011 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:01,011 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 98 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:01,020 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:01,025 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:01,025 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:01,026 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:01,057 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:01,078 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:01,079 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:01,079 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:01,079 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:01,079 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:01,079 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:19:01,236 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:01,236 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:19:01,236 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:01,236 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:01,237 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:01,237 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:19:01,237 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:19:01,237 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:19:01,238 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:19:01,292 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28.
[2018-10-03 09:19:01,293 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:01,293 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:01,293 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:01,293 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:01,293 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:01,293 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:01,293 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:01,293 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:01,293 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:01,294 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:19:01,294 INFO  L423      AbstractCegarLoop]: === Iteration 99 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:01,294 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:01,294 INFO  L82        PathProgramCache]: Analyzing trace with hash -187366792, now seen corresponding path program 87 times
[2018-10-03 09:19:01,294 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:01,294 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:01,295 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:01,295 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:01,295 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:01,296 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:01,342 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:01,343 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:01,343 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 99 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:01,350 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:01,358 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2018-10-03 09:19:01,358 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:01,359 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:01,399 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:01,418 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:01,418 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:01,419 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:01,419 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:01,419 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:01,419 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:01,619 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:01,619 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:19:01,619 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:01,619 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:01,619 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:01,620 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:19:01,620 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:19:01,620 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:01,620 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:19:01,699 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 24.
[2018-10-03 09:19:01,699 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:19:01,699 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:19:01,699 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15
[2018-10-03 09:19:01,699 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:01,700 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:19:01,700 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:01,700 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:19:01,700 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:01,700 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:01,700 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:01,700 INFO  L423      AbstractCegarLoop]: === Iteration 100 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:01,701 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:01,701 INFO  L82        PathProgramCache]: Analyzing trace with hash 1585791606, now seen corresponding path program 88 times
[2018-10-03 09:19:01,701 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:01,701 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:01,701 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:01,702 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:01,702 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:01,703 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:02,411 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:02,411 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:02,411 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 100 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:02,426 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:02,456 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:02,457 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:02,458 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:02,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:02,922 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:02,923 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:02,923 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:02,923 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:02,923 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:02,923 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states.
[2018-10-03 09:19:03,483 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:03,483 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:03,484 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:03,484 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:03,484 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:03,484 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:03,484 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:03,485 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.4s impTime 7
[2018-10-03 09:19:03,485 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:03,562 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28.
[2018-10-03 09:19:03,562 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:03,562 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:03,563 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:03,563 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:03,563 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:03,563 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:03,563 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:03,563 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:03,563 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:03,563 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:19:03,564 INFO  L423      AbstractCegarLoop]: === Iteration 101 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:03,564 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:03,564 INFO  L82        PathProgramCache]: Analyzing trace with hash 1585793528, now seen corresponding path program 89 times
[2018-10-03 09:19:03,564 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:03,564 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:03,565 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:03,565 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:03,565 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:03,566 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:03,638 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:03,639 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:03,639 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 101 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:03,646 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:03,654 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2018-10-03 09:19:03,654 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:03,656 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:03,681 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:03,701 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:03,701 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:03,702 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:03,702 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:03,702 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:03,702 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:03,875 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:03,875 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:03,875 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:03,875 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:03,876 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:03,876 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:03,876 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:03,877 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:03,877 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:03,946 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 26.
[2018-10-03 09:19:03,946 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:03,946 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:03,946 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:19:03,946 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:03,946 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:03,946 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:03,947 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:03,947 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:03,947 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:03,947 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:19:03,947 INFO  L423      AbstractCegarLoop]: === Iteration 102 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:03,947 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:03,947 INFO  L82        PathProgramCache]: Analyzing trace with hash 1587638648, now seen corresponding path program 90 times
[2018-10-03 09:19:03,947 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:03,947 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:03,948 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:03,948 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:03,948 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:03,949 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:04,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:04,063 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:04,063 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 102 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:04,071 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:04,079 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-10-03 09:19:04,079 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:04,080 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:04,133 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:04,155 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:04,155 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:04,155 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:04,155 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:04,155 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:04,155 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:19:04,278 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:04,279 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:19:04,279 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:04,279 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:04,279 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:04,280 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:19:04,280 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:19:04,281 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:19:04,281 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:19:04,339 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28.
[2018-10-03 09:19:04,339 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:04,340 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:04,340 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:04,340 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:04,340 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:04,340 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:04,340 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:04,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:04,340 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:04,340 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:04,341 INFO  L423      AbstractCegarLoop]: === Iteration 103 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:04,341 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:04,341 INFO  L82        PathProgramCache]: Analyzing trace with hash 1587640570, now seen corresponding path program 91 times
[2018-10-03 09:19:04,341 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:04,341 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:04,342 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:04,342 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:04,342 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:04,343 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:04,454 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:04,454 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:04,454 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 103 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:04,461 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:04,465 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:04,466 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:04,485 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:04,507 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:04,507 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:04,507 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:04,507 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:04,507 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:04,507 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:04,633 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:04,633 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:19:04,633 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:04,633 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:04,633 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:04,634 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:19:04,634 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:19:04,634 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:19:04,634 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:19:04,677 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 22.
[2018-10-03 09:19:04,677 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:19:04,677 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:19:04,677 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 15
[2018-10-03 09:19:04,677 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:04,677 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:19:04,677 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:04,677 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:19:04,678 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:04,678 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:04,678 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:04,678 INFO  L423      AbstractCegarLoop]: === Iteration 104 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:04,678 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:04,678 INFO  L82        PathProgramCache]: Analyzing trace with hash 490842614, now seen corresponding path program 92 times
[2018-10-03 09:19:04,678 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:04,678 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:04,679 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:04,679 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:04,679 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:04,680 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:04,749 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:04,749 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:04,750 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 104 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:04,758 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:04,763 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:04,763 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:04,764 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:04,790 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:04,812 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:04,812 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:04,812 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:04,812 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:04,812 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:04,812 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 9 states.
[2018-10-03 09:19:04,982 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:04,982 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:19:04,982 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:04,982 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:04,982 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:04,983 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:19:04,983 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:19:04,983 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:04,983 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:19:05,045 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28.
[2018-10-03 09:19:05,045 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:05,045 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:05,046 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:05,046 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:05,046 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:05,046 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:05,046 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:05,046 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:05,046 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:05,046 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:19:05,046 INFO  L423      AbstractCegarLoop]: === Iteration 105 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:05,046 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:05,047 INFO  L82        PathProgramCache]: Analyzing trace with hash 490844536, now seen corresponding path program 93 times
[2018-10-03 09:19:05,047 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:05,047 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:05,047 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:05,047 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:05,047 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:05,048 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:05,114 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:05,115 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:05,115 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 105 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:05,122 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:05,134 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2018-10-03 09:19:05,135 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:05,135 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:05,178 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:05,198 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:05,198 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:05,198 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:05,198 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:05,198 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:05,199 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:05,398 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:05,398 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:19:05,398 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:05,398 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:05,398 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:05,399 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:19:05,399 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:19:05,399 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:19:05,399 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:19:05,496 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 26.
[2018-10-03 09:19:05,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:05,496 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:05,496 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:19:05,497 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:05,497 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:05,497 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:05,497 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:05,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:05,497 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:05,497 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:19:05,498 INFO  L423      AbstractCegarLoop]: === Iteration 106 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:05,498 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:05,498 INFO  L82        PathProgramCache]: Analyzing trace with hash 492689656, now seen corresponding path program 94 times
[2018-10-03 09:19:05,498 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:05,498 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:05,499 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:05,499 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:05,499 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:05,500 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:05,746 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:05,747 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:05,747 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 106 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:05,757 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:05,762 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:05,763 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:05,763 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:05,782 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:05,802 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:05,802 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:05,803 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:05,803 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:05,803 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:05,803 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:19:05,947 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:05,947 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:19:05,947 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:05,947 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:05,947 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:05,948 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:19:05,948 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:19:05,948 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 7
[2018-10-03 09:19:05,949 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:19:06,007 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28.
[2018-10-03 09:19:06,008 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:06,008 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:06,008 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:06,008 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:06,008 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:06,008 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:06,008 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:06,008 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:06,008 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:06,008 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:06,009 INFO  L423      AbstractCegarLoop]: === Iteration 107 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:06,009 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:06,009 INFO  L82        PathProgramCache]: Analyzing trace with hash 492691578, now seen corresponding path program 95 times
[2018-10-03 09:19:06,009 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:06,009 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:06,009 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:06,009 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:06,010 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:06,010 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:06,120 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:06,121 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:06,121 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 107 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:06,129 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:06,136 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2018-10-03 09:19:06,136 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:06,137 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:06,179 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:06,200 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:06,200 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:06,200 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:06,200 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:06,200 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:06,200 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:06,346 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:06,347 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:19:06,347 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:06,347 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:06,347 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:06,348 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:19:06,348 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:19:06,348 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:19:06,348 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:19:06,399 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 24.
[2018-10-03 09:19:06,399 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:19:06,399 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:19:06,400 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15
[2018-10-03 09:19:06,400 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:06,400 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:19:06,400 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:06,400 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:19:06,400 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:06,400 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:06,400 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:19:06,400 INFO  L423      AbstractCegarLoop]: === Iteration 108 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:06,400 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:06,400 INFO  L82        PathProgramCache]: Analyzing trace with hash -2029117320, now seen corresponding path program 96 times
[2018-10-03 09:19:06,401 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:06,401 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:06,401 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:06,401 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:06,401 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:06,403 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:06,523 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:06,524 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:06,524 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 108 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:06,532 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:06,540 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-10-03 09:19:06,540 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:06,541 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:06,562 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:06,583 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:06,583 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:06,583 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:06,583 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:06,584 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:06,584 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states.
[2018-10-03 09:19:06,736 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:06,736 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:06,736 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:06,736 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:06,736 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:06,737 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:06,737 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:06,737 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:19:06,737 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:06,796 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28.
[2018-10-03 09:19:06,797 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:06,797 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:06,797 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:06,797 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:06,797 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:06,797 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:06,797 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:06,797 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:06,798 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:06,798 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:06,798 INFO  L423      AbstractCegarLoop]: === Iteration 109 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:06,798 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:06,798 INFO  L82        PathProgramCache]: Analyzing trace with hash -2029115398, now seen corresponding path program 97 times
[2018-10-03 09:19:06,798 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:06,798 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:06,799 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:06,799 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:06,799 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:06,800 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:06,896 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:06,897 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:06,897 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 109 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:06,904 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:06,909 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:06,910 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:06,942 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:06,963 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:06,963 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:06,964 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:06,964 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:06,964 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:06,964 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:07,099 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:07,100 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:07,100 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:07,100 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:07,100 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:07,100 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:07,100 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:07,101 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:19:07,101 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:07,159 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 26.
[2018-10-03 09:19:07,160 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:07,160 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:07,160 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:19:07,160 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:07,160 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:07,160 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:07,160 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:07,161 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:07,161 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:07,161 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:07,161 INFO  L423      AbstractCegarLoop]: === Iteration 110 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:07,161 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:07,161 INFO  L82        PathProgramCache]: Analyzing trace with hash -2027270278, now seen corresponding path program 98 times
[2018-10-03 09:19:07,161 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:07,161 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:07,162 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:07,162 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:07,162 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:07,163 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:07,917 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:07,917 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:07,918 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 110 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:07,933 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:07,966 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:07,967 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:07,968 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:08,152 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:08,173 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:08,173 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:08,173 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:08,173 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:08,174 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:08,174 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:19:08,309 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:08,310 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:19:08,310 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:08,310 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:08,310 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:08,310 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:19:08,310 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:19:08,311 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s Time 0.5s impTime 7
[2018-10-03 09:19:08,311 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:19:08,369 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28.
[2018-10-03 09:19:08,369 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:08,369 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:08,369 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:08,369 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:08,369 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:08,369 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:08,370 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:08,370 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:08,370 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:08,370 INFO  L375         BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1]
[2018-10-03 09:19:08,370 INFO  L423      AbstractCegarLoop]: === Iteration 111 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:08,370 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:08,370 INFO  L82        PathProgramCache]: Analyzing trace with hash -2027268356, now seen corresponding path program 99 times
[2018-10-03 09:19:08,371 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:08,371 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:08,371 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:08,371 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:08,371 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:08,372 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:08,423 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:08,423 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:08,423 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 111 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:08,432 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:08,440 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2018-10-03 09:19:08,441 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:08,442 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:08,477 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:08,497 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:08,497 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:08,498 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:08,498 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:08,498 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:08,498 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:08,618 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:08,619 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:19:08,619 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:08,619 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:08,619 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:08,620 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:19:08,620 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:19:08,620 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:08,621 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:19:08,663 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 20.
[2018-10-03 09:19:08,663 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:19:08,663 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:19:08,663 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 15
[2018-10-03 09:19:08,664 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:08,664 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:19:08,664 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:08,664 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:19:08,664 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:08,664 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:08,664 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:08,664 INFO  L423      AbstractCegarLoop]: === Iteration 112 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:08,664 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:08,664 INFO  L82        PathProgramCache]: Analyzing trace with hash 511848822, now seen corresponding path program 100 times
[2018-10-03 09:19:08,664 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:08,665 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:08,665 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:08,665 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:08,665 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:08,666 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:08,717 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:08,717 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:08,718 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 112 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:08,726 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:08,735 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:08,735 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:08,736 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:08,777 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:08,797 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:08,798 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:08,798 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:08,798 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:08,798 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:08,798 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 9 states.
[2018-10-03 09:19:08,972 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:08,973 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:19:08,973 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:08,973 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:08,973 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:08,973 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:19:08,973 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:19:08,974 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:08,974 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:19:09,046 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28.
[2018-10-03 09:19:09,046 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:09,046 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:09,047 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:09,047 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:09,047 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:09,047 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:09,047 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:09,047 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:09,048 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:09,048 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:19:09,048 INFO  L423      AbstractCegarLoop]: === Iteration 113 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:09,048 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:09,048 INFO  L82        PathProgramCache]: Analyzing trace with hash 511850744, now seen corresponding path program 101 times
[2018-10-03 09:19:09,048 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:09,049 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:09,049 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:09,049 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:09,050 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:09,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:09,115 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:09,115 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:09,116 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 113 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:09,132 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:09,140 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2018-10-03 09:19:09,140 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:09,141 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:09,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:09,185 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:09,186 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:09,186 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:09,186 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:09,186 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:09,186 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:09,331 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:09,331 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:19:09,331 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:09,331 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:09,332 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:09,332 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:19:09,332 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:19:09,333 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:09,333 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:19:09,407 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26.
[2018-10-03 09:19:09,407 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:09,407 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:09,407 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:19:09,407 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:09,407 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:09,407 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:09,407 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:09,408 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:09,408 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:09,408 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:19:09,408 INFO  L423      AbstractCegarLoop]: === Iteration 114 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:09,408 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:09,408 INFO  L82        PathProgramCache]: Analyzing trace with hash 513695864, now seen corresponding path program 102 times
[2018-10-03 09:19:09,408 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:09,408 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:09,409 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:09,409 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:09,409 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:09,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:09,467 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:09,468 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:09,468 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 114 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:09,475 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:09,483 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-10-03 09:19:09,484 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:09,484 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:09,514 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:09,536 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:09,536 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:09,536 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:09,536 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:09,537 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:09,537 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:19:09,675 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:09,676 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:19:09,676 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:09,676 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:09,676 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:09,677 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:19:09,677 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:19:09,677 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:09,677 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:19:09,753 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28.
[2018-10-03 09:19:09,753 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:09,753 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:09,753 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:09,753 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:09,754 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:09,754 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:09,754 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:09,754 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:09,754 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:09,754 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:09,754 INFO  L423      AbstractCegarLoop]: === Iteration 115 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:09,754 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:09,754 INFO  L82        PathProgramCache]: Analyzing trace with hash 513697786, now seen corresponding path program 103 times
[2018-10-03 09:19:09,754 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:09,755 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:09,755 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:09,755 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:09,755 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:09,756 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:09,811 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:09,812 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:09,812 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 115 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:09,819 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:09,824 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:09,825 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:09,850 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:09,872 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:09,872 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:09,872 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:09,873 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:09,873 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:09,873 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:09,997 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:09,997 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:19:09,997 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:09,997 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:09,998 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:09,998 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:19:09,998 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:19:09,998 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:09,998 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:19:10,056 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 24.
[2018-10-03 09:19:10,056 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:19:10,056 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:19:10,057 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15
[2018-10-03 09:19:10,057 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:10,057 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:19:10,057 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:10,057 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:19:10,057 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:10,057 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:10,057 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:19:10,057 INFO  L423      AbstractCegarLoop]: === Iteration 116 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:10,057 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:10,058 INFO  L82        PathProgramCache]: Analyzing trace with hash -2008111112, now seen corresponding path program 104 times
[2018-10-03 09:19:10,058 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:10,058 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:10,058 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:10,058 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:10,058 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:10,059 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:10,150 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:10,150 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:10,150 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 116 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:10,156 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:10,162 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:10,162 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:10,163 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:10,208 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:10,227 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:10,227 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:10,228 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:10,228 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:10,228 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:10,228 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states.
[2018-10-03 09:19:10,371 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:10,372 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:19:10,372 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:10,372 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:10,372 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:10,372 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:19:10,372 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:19:10,372 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:19:10,373 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:19:10,444 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28.
[2018-10-03 09:19:10,445 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:10,445 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:10,445 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:10,445 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:10,445 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:10,445 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:10,445 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:10,445 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:10,445 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:10,445 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:10,446 INFO  L423      AbstractCegarLoop]: === Iteration 117 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:10,446 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:10,446 INFO  L82        PathProgramCache]: Analyzing trace with hash -2008109190, now seen corresponding path program 105 times
[2018-10-03 09:19:10,446 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:10,446 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:10,446 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:10,446 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:10,447 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:10,447 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:10,527 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:10,527 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:10,528 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 117 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:10,536 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:10,543 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2018-10-03 09:19:10,544 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:10,544 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:10,582 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:10,602 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:10,602 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:10,602 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:10,602 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:10,603 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:10,603 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:10,737 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:10,738 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:19:10,738 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:10,738 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:10,738 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:10,738 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:19:10,738 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:19:10,738 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:19:10,739 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:19:10,802 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26.
[2018-10-03 09:19:10,802 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:10,803 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:10,803 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:19:10,803 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:10,803 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:10,803 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:10,803 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:10,803 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:10,803 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:10,803 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:10,804 INFO  L423      AbstractCegarLoop]: === Iteration 118 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:10,804 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:10,804 INFO  L82        PathProgramCache]: Analyzing trace with hash -2006264070, now seen corresponding path program 106 times
[2018-10-03 09:19:10,804 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:10,804 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:10,804 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:10,804 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:10,805 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:10,806 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:10,869 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:10,870 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:10,870 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 118 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:10,878 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:10,882 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:10,883 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:10,883 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:10,906 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:10,928 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:10,928 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:10,928 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:10,928 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:10,928 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:10,928 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:19:11,068 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:11,069 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:19:11,069 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:11,069 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:11,069 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:11,070 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:19:11,070 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:19:11,070 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:11,070 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:19:11,138 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28.
[2018-10-03 09:19:11,138 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:11,139 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:11,139 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:11,139 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:11,139 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:11,139 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:11,139 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:11,139 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:11,139 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:11,139 INFO  L375         BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1]
[2018-10-03 09:19:11,139 INFO  L423      AbstractCegarLoop]: === Iteration 119 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:11,139 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:11,140 INFO  L82        PathProgramCache]: Analyzing trace with hash -2006262148, now seen corresponding path program 107 times
[2018-10-03 09:19:11,140 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:11,140 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:11,140 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:11,140 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:11,140 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:11,141 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:11,204 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:11,204 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:11,205 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 119 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:11,212 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:11,219 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2018-10-03 09:19:11,219 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:11,220 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:11,409 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:11,446 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:11,446 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:11,446 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:11,446 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:11,446 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:11,447 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:11,976 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:11,976 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:19:11,976 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:11,976 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:11,976 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:11,977 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:19:11,977 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:19:11,977 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 7
[2018-10-03 09:19:11,977 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:19:12,039 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 22.
[2018-10-03 09:19:12,039 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:19:12,039 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:19:12,040 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 15
[2018-10-03 09:19:12,040 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:12,040 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:19:12,040 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:12,040 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:19:12,040 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:12,040 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:12,040 INFO  L375         BasicCegarLoop]: trace histogram [6, 3, 3, 1, 1, 1]
[2018-10-03 09:19:12,040 INFO  L423      AbstractCegarLoop]: === Iteration 120 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:12,041 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:12,041 INFO  L82        PathProgramCache]: Analyzing trace with hash 1191907192, now seen corresponding path program 108 times
[2018-10-03 09:19:12,041 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:12,041 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:12,041 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:12,041 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:12,042 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:12,042 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:12,096 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:12,097 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:12,097 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 120 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:12,105 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:12,116 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-10-03 09:19:12,117 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:12,118 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:12,156 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:12,175 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:12,176 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:12,176 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:12,176 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:12,176 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:12,176 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 9 states.
[2018-10-03 09:19:12,301 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:12,302 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:19:12,302 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:12,302 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:12,302 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:12,303 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:19:12,303 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:19:12,303 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:12,303 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:19:12,412 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28.
[2018-10-03 09:19:12,412 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:12,413 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:12,413 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:12,413 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:12,413 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:12,413 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:12,413 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:12,413 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:12,414 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:12,414 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:12,414 INFO  L423      AbstractCegarLoop]: === Iteration 121 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:12,414 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:12,414 INFO  L82        PathProgramCache]: Analyzing trace with hash 1191909114, now seen corresponding path program 109 times
[2018-10-03 09:19:12,414 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:12,414 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:12,415 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:12,415 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:12,415 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:12,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:12,808 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:12,808 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:12,809 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 121 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:12,817 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:12,822 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:12,822 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:12,854 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:12,876 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:12,876 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:12,876 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:12,876 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:12,876 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:12,876 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:13,002 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:13,002 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:19:13,002 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:13,002 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:13,003 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:13,003 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:19:13,003 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:19:13,003 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time 0.2s impTime 7
[2018-10-03 09:19:13,004 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:19:13,095 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 26.
[2018-10-03 09:19:13,095 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:13,096 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:13,096 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:19:13,096 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:13,096 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:13,096 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:13,096 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:13,096 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:13,097 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:13,097 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:13,097 INFO  L423      AbstractCegarLoop]: === Iteration 122 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:13,097 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:13,097 INFO  L82        PathProgramCache]: Analyzing trace with hash 1193754234, now seen corresponding path program 110 times
[2018-10-03 09:19:13,097 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:13,097 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:13,098 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:13,098 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:13,098 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:13,099 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:13,255 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:13,255 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:13,255 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 122 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:13,263 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:13,268 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:13,268 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:13,269 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:13,315 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:13,334 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:13,335 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:13,335 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:13,335 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:13,335 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:13,335 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:19:13,520 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:13,521 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:19:13,521 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:13,521 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:13,521 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:13,522 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:19:13,522 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:19:13,522 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:19:13,522 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:19:13,596 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28.
[2018-10-03 09:19:13,597 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:13,597 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:13,597 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:13,597 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:13,597 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:13,597 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:13,597 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:13,597 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:13,598 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:13,598 INFO  L375         BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1]
[2018-10-03 09:19:13,598 INFO  L423      AbstractCegarLoop]: === Iteration 123 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:13,598 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:13,598 INFO  L82        PathProgramCache]: Analyzing trace with hash 1193756156, now seen corresponding path program 111 times
[2018-10-03 09:19:13,598 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:13,598 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:13,599 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:13,599 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:13,599 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:13,600 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:13,668 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:13,668 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:13,668 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 123 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:13,677 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:13,684 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s)
[2018-10-03 09:19:13,685 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:13,685 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:13,711 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:13,732 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:13,732 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:13,732 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:13,732 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:13,732 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:13,733 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:13,868 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:13,869 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:19:13,869 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:13,869 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:13,869 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:13,869 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:19:13,869 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:19:13,870 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:13,870 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:19:13,949 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 24.
[2018-10-03 09:19:13,949 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:19:13,949 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:19:13,949 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 15
[2018-10-03 09:19:13,950 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:13,950 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:19:13,950 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:13,950 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:19:13,950 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:13,950 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:13,950 INFO  L375         BasicCegarLoop]: trace histogram [6, 4, 2, 1, 1, 1]
[2018-10-03 09:19:13,950 INFO  L423      AbstractCegarLoop]: === Iteration 124 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:13,950 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:13,951 INFO  L82        PathProgramCache]: Analyzing trace with hash -1328052742, now seen corresponding path program 112 times
[2018-10-03 09:19:13,951 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:13,951 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:13,951 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:13,951 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:13,951 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:13,952 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:13,998 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:13,998 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:13,999 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 124 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:14,006 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:14,010 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:14,011 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:14,011 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:14,039 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:14,060 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:14,060 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:14,060 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:14,060 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:14,060 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:14,061 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 9 states.
[2018-10-03 09:19:14,177 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:14,178 INFO  L93              Difference]: Finished difference Result 35 states and 49 transitions.
[2018-10-03 09:19:14,178 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:14,178 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:14,178 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:14,179 INFO  L225             Difference]: With dead ends: 35
[2018-10-03 09:19:14,179 INFO  L226             Difference]: Without dead ends: 33
[2018-10-03 09:19:14,179 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:14,180 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-10-03 09:19:14,251 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 28.
[2018-10-03 09:19:14,251 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:14,251 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:14,251 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:14,252 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:14,252 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:14,252 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:14,252 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:14,252 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:14,252 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:14,252 INFO  L375         BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1]
[2018-10-03 09:19:14,253 INFO  L423      AbstractCegarLoop]: === Iteration 125 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:14,253 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:14,253 INFO  L82        PathProgramCache]: Analyzing trace with hash -1328050820, now seen corresponding path program 113 times
[2018-10-03 09:19:14,253 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:14,253 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:14,254 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:14,254 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:14,254 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:14,255 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:14,323 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:14,324 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:14,324 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 125 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:14,333 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:14,342 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2018-10-03 09:19:14,343 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:14,343 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:14,385 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:14,405 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:14,405 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:14,405 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:14,405 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:14,405 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:14,405 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:14,536 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:14,536 INFO  L93              Difference]: Finished difference Result 35 states and 49 transitions.
[2018-10-03 09:19:14,537 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:14,537 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:14,537 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:14,537 INFO  L225             Difference]: With dead ends: 35
[2018-10-03 09:19:14,537 INFO  L226             Difference]: Without dead ends: 33
[2018-10-03 09:19:14,537 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:19:14,537 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-10-03 09:19:14,610 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26.
[2018-10-03 09:19:14,611 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:14,611 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:14,611 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 15
[2018-10-03 09:19:14,611 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:14,611 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:14,611 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:14,611 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:14,612 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:14,612 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:14,612 INFO  L375         BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1]
[2018-10-03 09:19:14,612 INFO  L423      AbstractCegarLoop]: === Iteration 126 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:14,612 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:14,612 INFO  L82        PathProgramCache]: Analyzing trace with hash -1326205700, now seen corresponding path program 114 times
[2018-10-03 09:19:14,612 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:14,612 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:14,613 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:14,613 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:14,613 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:14,614 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:14,681 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:14,681 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:14,681 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 126 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:14,690 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:14,698 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-10-03 09:19:14,699 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:14,700 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:14,742 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:14,762 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:14,762 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:14,762 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:14,762 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:14,762 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:14,762 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 9 states.
[2018-10-03 09:19:14,894 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:14,894 INFO  L93              Difference]: Finished difference Result 33 states and 46 transitions.
[2018-10-03 09:19:14,895 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:14,895 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:14,895 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:14,895 INFO  L225             Difference]: With dead ends: 33
[2018-10-03 09:19:14,895 INFO  L226             Difference]: Without dead ends: 31
[2018-10-03 09:19:14,895 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 7
[2018-10-03 09:19:14,896 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2018-10-03 09:19:14,972 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28.
[2018-10-03 09:19:14,972 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:14,973 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:14,973 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 15
[2018-10-03 09:19:14,973 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:14,973 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:14,973 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:14,973 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:14,973 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-10-03 09:19:14,973 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:14,973 INFO  L375         BasicCegarLoop]: trace histogram [6, 6, 1, 1, 1]
[2018-10-03 09:19:14,974 INFO  L423      AbstractCegarLoop]: === Iteration 127 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:14,974 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:14,974 INFO  L82        PathProgramCache]: Analyzing trace with hash -1326203778, now seen corresponding path program 6 times
[2018-10-03 09:19:14,974 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:14,974 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:14,975 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:14,975 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:14,975 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:14,976 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:15,044 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:15,045 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:15,045 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 127 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:15,052 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:15,059 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-10-03 09:19:15,059 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:15,060 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:15,082 INFO  L134       CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:15,107 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:15,107 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8
[2018-10-03 09:19:15,107 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-10-03 09:19:15,107 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-10-03 09:19:15,107 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:15,107 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 9 states.
[2018-10-03 09:19:15,212 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:15,212 INFO  L93              Difference]: Finished difference Result 32 states and 45 transitions.
[2018-10-03 09:19:15,212 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:19:15,212 INFO  L78                 Accepts]: Start accepts. Automaton has 9 states. Word has length 15
[2018-10-03 09:19:15,212 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:15,212 INFO  L225             Difference]: With dead ends: 32
[2018-10-03 09:19:15,213 INFO  L226             Difference]: Without dead ends: 30
[2018-10-03 09:19:15,213 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 7
[2018-10-03 09:19:15,213 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2018-10-03 09:19:15,262 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 18.
[2018-10-03 09:19:15,262 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2018-10-03 09:19:15,262 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions.
[2018-10-03 09:19:15,262 INFO  L78                 Accepts]: Start accepts. Automaton has 18 states and 25 transitions. Word has length 15
[2018-10-03 09:19:15,263 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:15,263 INFO  L480      AbstractCegarLoop]: Abstraction has 18 states and 25 transitions.
[2018-10-03 09:19:15,263 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-10-03 09:19:15,263 INFO  L276                IsEmpty]: Start isEmpty. Operand 18 states and 25 transitions.
[2018-10-03 09:19:15,263 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:15,263 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:15,263 INFO  L375         BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1]
[2018-10-03 09:19:15,264 INFO  L423      AbstractCegarLoop]: === Iteration 128 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:15,264 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:15,264 INFO  L82        PathProgramCache]: Analyzing trace with hash -168156555, now seen corresponding path program 7 times
[2018-10-03 09:19:15,264 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:15,264 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:15,265 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:15,265 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:15,265 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:15,266 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:15,382 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:15,382 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:15,382 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 128 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:15,390 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:15,395 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:15,395 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:15,446 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:15,465 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:15,466 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:15,466 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:15,466 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:15,466 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:15,466 INFO  L87              Difference]: Start difference. First operand 18 states and 25 transitions. Second operand 10 states.
[2018-10-03 09:19:15,796 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:15,796 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:19:15,796 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:15,797 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:15,797 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:15,797 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:19:15,798 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:19:15,798 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:15,798 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:19:15,885 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30.
[2018-10-03 09:19:15,885 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:15,886 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:15,886 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:15,886 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:15,886 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:15,886 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:15,886 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:15,886 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:15,887 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:15,887 INFO  L375         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1]
[2018-10-03 09:19:15,887 INFO  L423      AbstractCegarLoop]: === Iteration 129 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:15,887 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:15,887 INFO  L82        PathProgramCache]: Analyzing trace with hash -168154633, now seen corresponding path program 115 times
[2018-10-03 09:19:15,887 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:15,887 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:15,888 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:15,888 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:15,888 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:15,890 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:15,957 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:15,958 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:15,958 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 129 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:15,967 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:15,972 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:15,973 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:16,009 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:16,030 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:16,030 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:16,030 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:16,030 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:16,031 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:16,031 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:16,222 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:16,222 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:19:16,222 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:16,222 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:16,222 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:16,223 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:19:16,223 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:19:16,223 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:16,224 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:19:16,332 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28.
[2018-10-03 09:19:16,332 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:16,332 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:16,332 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:16,332 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:16,332 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:16,333 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:16,333 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:16,333 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:16,333 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:16,333 INFO  L375         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1]
[2018-10-03 09:19:16,333 INFO  L423      AbstractCegarLoop]: === Iteration 130 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:16,333 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:16,333 INFO  L82        PathProgramCache]: Analyzing trace with hash -166309513, now seen corresponding path program 116 times
[2018-10-03 09:19:16,333 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:16,334 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:16,334 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:16,334 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:16,334 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:16,335 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:16,400 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:16,400 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:16,400 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 130 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:16,408 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:16,413 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:16,413 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:16,414 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:16,441 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:16,463 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:16,463 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:16,463 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:16,463 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:16,463 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:16,463 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:16,680 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:16,681 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:19:16,681 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:16,681 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:16,681 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:16,682 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:19:16,682 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:19:16,682 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:16,682 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:19:16,767 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30.
[2018-10-03 09:19:16,767 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:16,767 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:16,768 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:16,768 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:16,768 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:16,768 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:16,768 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:16,768 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:16,768 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:16,768 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:16,768 INFO  L423      AbstractCegarLoop]: === Iteration 131 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:16,768 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:16,769 INFO  L82        PathProgramCache]: Analyzing trace with hash -166307591, now seen corresponding path program 117 times
[2018-10-03 09:19:16,769 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:16,769 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:16,769 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:16,769 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:16,769 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:16,770 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:16,843 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:16,843 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:16,843 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 131 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:16,851 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:16,860 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:19:16,861 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:16,862 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:16,890 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:16,911 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:16,911 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:16,911 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:16,912 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:16,912 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:16,912 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:17,109 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:17,110 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:19:17,110 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:17,110 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:17,110 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:17,110 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:19:17,110 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:19:17,111 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:17,111 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:19:17,188 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26.
[2018-10-03 09:19:17,189 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:17,189 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:17,189 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17
[2018-10-03 09:19:17,189 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:17,189 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:17,189 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:17,189 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:17,189 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:17,189 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:17,189 INFO  L375         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1]
[2018-10-03 09:19:17,190 INFO  L423      AbstractCegarLoop]: === Iteration 132 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:17,190 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:17,190 INFO  L82        PathProgramCache]: Analyzing trace with hash 1606850807, now seen corresponding path program 118 times
[2018-10-03 09:19:17,190 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:17,190 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:17,190 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:17,190 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:17,190 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:17,191 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:17,257 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:17,257 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:17,257 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 132 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:17,266 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:17,272 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:17,272 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:17,273 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:17,318 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:17,338 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:17,339 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:17,339 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:17,339 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:17,339 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:17,339 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states.
[2018-10-03 09:19:17,521 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:17,522 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:19:17,522 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:17,522 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:17,522 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:17,522 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:19:17,522 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:19:17,522 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:17,523 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:19:17,620 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30.
[2018-10-03 09:19:17,620 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:17,620 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:17,620 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:17,620 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:17,621 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:17,621 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:17,621 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:17,621 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:17,621 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:17,621 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:17,621 INFO  L423      AbstractCegarLoop]: === Iteration 133 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:17,621 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:17,621 INFO  L82        PathProgramCache]: Analyzing trace with hash 1606852729, now seen corresponding path program 119 times
[2018-10-03 09:19:17,622 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:17,622 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:17,622 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:17,622 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:17,622 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:17,623 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:17,716 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:17,717 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:17,717 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 133 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:17,725 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:17,733 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:19:17,733 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:17,734 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:17,772 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:17,793 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:17,793 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:17,793 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:17,793 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:17,793 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:17,794 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:17,987 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:17,988 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:19:17,988 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:17,988 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:17,988 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:17,989 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:19:17,989 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:19:17,989 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:17,989 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:19:18,077 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28.
[2018-10-03 09:19:18,077 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:18,078 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:18,078 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:18,078 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:18,078 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:18,078 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:18,078 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:18,078 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:18,078 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:18,078 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:18,078 INFO  L423      AbstractCegarLoop]: === Iteration 134 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:18,079 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:18,079 INFO  L82        PathProgramCache]: Analyzing trace with hash 1608697849, now seen corresponding path program 120 times
[2018-10-03 09:19:18,079 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:18,079 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:18,079 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:18,079 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:18,079 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:18,080 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:18,237 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:18,238 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:18,238 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 134 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:18,245 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:18,252 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:19:18,253 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:18,253 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:18,285 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:18,305 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:18,305 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:18,306 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:18,306 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:18,306 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:18,306 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:18,477 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:18,477 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:18,482 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:18,483 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:18,483 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:18,483 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:18,483 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:18,483 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:18,483 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:18,574 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30.
[2018-10-03 09:19:18,574 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:18,574 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:18,575 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:18,575 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:18,575 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:18,575 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:18,575 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:18,575 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:18,575 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:18,575 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:18,575 INFO  L423      AbstractCegarLoop]: === Iteration 135 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:18,575 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:18,576 INFO  L82        PathProgramCache]: Analyzing trace with hash 1608699771, now seen corresponding path program 121 times
[2018-10-03 09:19:18,576 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:18,576 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:18,576 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:18,576 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:18,576 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:18,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:18,632 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:18,632 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:18,632 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 135 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:18,640 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:18,645 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:18,646 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:18,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:18,696 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:18,696 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:18,696 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:18,696 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:18,696 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:18,697 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:18,871 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:18,872 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:19:18,872 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:18,872 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:18,872 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:18,873 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:19:18,873 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:19:18,873 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:18,873 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:19:18,943 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24.
[2018-10-03 09:19:18,943 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:19:18,943 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:19:18,943 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 17
[2018-10-03 09:19:18,944 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:18,944 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:19:18,944 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:18,944 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:19:18,944 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:18,944 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:18,944 INFO  L375         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1]
[2018-10-03 09:19:18,945 INFO  L423      AbstractCegarLoop]: === Iteration 136 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:18,945 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:18,945 INFO  L82        PathProgramCache]: Analyzing trace with hash 511901815, now seen corresponding path program 122 times
[2018-10-03 09:19:18,945 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:18,945 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:18,946 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:18,946 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:18,946 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:18,947 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:19,025 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:19,025 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:19,025 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 136 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:19,032 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:19,038 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:19,039 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:19,040 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:19,066 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:19,088 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:19,088 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:19,088 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:19,088 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:19,088 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:19,088 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 10 states.
[2018-10-03 09:19:19,303 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:19,304 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:19:19,304 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:19,304 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:19,304 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:19,305 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:19:19,305 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:19:19,305 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:19,305 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:19:19,402 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30.
[2018-10-03 09:19:19,402 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:19,402 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:19,402 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:19,402 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:19,402 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:19,402 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:19,403 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:19,403 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:19,403 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:19,403 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:19,403 INFO  L423      AbstractCegarLoop]: === Iteration 137 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:19,403 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:19,403 INFO  L82        PathProgramCache]: Analyzing trace with hash 511903737, now seen corresponding path program 123 times
[2018-10-03 09:19:19,403 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:19,403 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:19,404 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:19,404 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:19,404 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:19,405 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:19,479 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:19,480 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:19,480 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 137 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:19,487 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:19,496 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:19:19,497 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:19,498 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:19,534 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:19,555 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:19,555 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:19,555 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:19,555 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:19,555 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:19,556 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:19,759 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:19,760 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:19:19,760 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:19,760 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:19,760 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:19,760 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:19:19,760 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:19:19,761 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:19,761 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:19:19,849 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28.
[2018-10-03 09:19:19,849 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:19,849 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:19,849 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:19,849 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:19,849 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:19,849 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:19,849 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:19,849 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:19,850 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:19,850 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:19,850 INFO  L423      AbstractCegarLoop]: === Iteration 138 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:19,850 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:19,850 INFO  L82        PathProgramCache]: Analyzing trace with hash 513748857, now seen corresponding path program 124 times
[2018-10-03 09:19:19,850 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:19,850 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:19,851 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:19,851 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:19,851 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:19,852 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:19,920 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:19,921 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:19,921 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 138 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:19,928 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:19,934 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:19,934 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:19,934 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:19,968 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:19,989 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:19,990 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:19,990 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:19,990 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:19,990 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:19,990 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:20,204 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:20,205 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:19:20,205 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:20,205 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:20,205 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:20,206 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:19:20,206 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:19:20,206 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:20,206 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:19:20,305 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30.
[2018-10-03 09:19:20,305 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:20,305 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:20,305 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:20,305 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:20,305 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:20,305 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:20,305 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:20,305 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:20,306 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:20,306 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:20,306 INFO  L423      AbstractCegarLoop]: === Iteration 139 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:20,306 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:20,306 INFO  L82        PathProgramCache]: Analyzing trace with hash 513750779, now seen corresponding path program 125 times
[2018-10-03 09:19:20,306 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:20,306 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:20,307 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:20,307 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:20,307 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:20,308 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:20,425 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:20,425 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:20,425 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 139 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:20,434 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:20,448 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:19:20,449 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:20,450 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:20,506 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:20,526 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:20,526 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:20,526 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:20,526 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:20,526 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:20,526 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:20,736 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:20,737 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:19:20,737 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:20,737 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:20,737 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:20,738 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:19:20,738 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:19:20,738 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:20,738 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:19:20,842 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26.
[2018-10-03 09:19:20,842 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:20,842 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:20,842 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17
[2018-10-03 09:19:20,842 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:20,842 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:20,843 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:20,843 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:20,843 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:20,843 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:20,843 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:20,843 INFO  L423      AbstractCegarLoop]: === Iteration 140 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:20,843 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:20,843 INFO  L82        PathProgramCache]: Analyzing trace with hash -2008058119, now seen corresponding path program 126 times
[2018-10-03 09:19:20,843 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:20,843 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:20,844 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:20,844 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:20,844 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:20,845 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:21,003 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:21,004 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:21,004 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 140 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:21,012 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:21,021 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:19:21,021 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:21,022 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:21,056 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:21,077 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:21,077 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:21,078 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:21,078 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:21,078 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:21,078 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states.
[2018-10-03 09:19:21,282 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:21,283 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:19:21,283 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:21,283 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:21,283 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:21,284 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:19:21,284 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:19:21,284 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:21,284 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:19:21,380 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30.
[2018-10-03 09:19:21,380 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:21,380 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:21,381 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:21,381 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:21,381 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:21,381 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:21,381 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:21,381 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:21,381 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:21,381 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:21,381 INFO  L423      AbstractCegarLoop]: === Iteration 141 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:21,381 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:21,382 INFO  L82        PathProgramCache]: Analyzing trace with hash -2008056197, now seen corresponding path program 127 times
[2018-10-03 09:19:21,382 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:21,382 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:21,382 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:21,382 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:21,382 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:21,383 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:21,480 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:21,481 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:21,481 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 141 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:21,488 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:21,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:21,494 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:21,526 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:21,547 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:21,547 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:21,547 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:21,547 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:21,548 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:21,548 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:21,773 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:21,774 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:19:21,774 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:21,774 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:21,774 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:21,774 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:19:21,774 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:19:21,774 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:21,775 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:19:21,871 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28.
[2018-10-03 09:19:21,871 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:21,871 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:21,871 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:21,872 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:21,872 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:21,872 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:21,872 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:21,872 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:21,872 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:21,872 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:21,872 INFO  L423      AbstractCegarLoop]: === Iteration 142 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:21,872 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:21,872 INFO  L82        PathProgramCache]: Analyzing trace with hash -2006211077, now seen corresponding path program 128 times
[2018-10-03 09:19:21,873 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:21,873 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:21,873 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:21,873 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:21,873 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:21,874 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:22,074 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:22,075 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:22,075 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 142 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:22,083 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:22,087 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:22,088 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:22,088 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:22,117 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:22,139 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:22,139 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:22,140 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:22,140 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:22,140 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:22,140 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:22,328 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:22,329 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:22,330 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:22,330 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:22,330 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:22,330 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:22,330 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:22,331 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 8
[2018-10-03 09:19:22,331 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:22,433 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30.
[2018-10-03 09:19:22,433 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:22,434 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:22,434 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:22,434 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:22,434 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:22,434 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:22,434 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:22,434 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:22,434 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:22,434 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:22,434 INFO  L423      AbstractCegarLoop]: === Iteration 143 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:22,435 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:22,435 INFO  L82        PathProgramCache]: Analyzing trace with hash -2006209155, now seen corresponding path program 129 times
[2018-10-03 09:19:22,435 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:22,435 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:22,435 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:22,435 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:22,435 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:22,436 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:22,503 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:22,503 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:22,503 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 143 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:22,515 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:22,523 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:19:22,523 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:22,524 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:22,551 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:22,572 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:22,572 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:22,573 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:22,573 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:22,573 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:22,573 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:22,762 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:22,763 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:19:22,763 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:22,763 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:22,763 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:22,764 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:19:22,764 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:19:22,764 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:22,764 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:19:22,838 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 22.
[2018-10-03 09:19:22,838 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:19:22,838 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:19:22,838 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 17
[2018-10-03 09:19:22,838 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:22,839 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:19:22,839 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:22,839 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:19:22,839 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:22,839 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:22,839 INFO  L375         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1]
[2018-10-03 09:19:22,839 INFO  L423      AbstractCegarLoop]: === Iteration 144 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:22,839 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:22,839 INFO  L82        PathProgramCache]: Analyzing trace with hash 532908023, now seen corresponding path program 130 times
[2018-10-03 09:19:22,839 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:22,839 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:22,840 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:22,840 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:22,840 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:22,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:22,916 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:22,916 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:22,917 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 144 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:22,924 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:22,930 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:22,930 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:22,931 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:22,955 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:22,976 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:22,976 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:22,976 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:22,976 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:22,976 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:22,976 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 10 states.
[2018-10-03 09:19:23,183 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:23,184 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:23,184 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:23,184 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:23,184 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:23,184 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:23,184 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:23,184 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:23,185 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:23,289 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30.
[2018-10-03 09:19:23,290 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:23,290 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:23,290 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:23,290 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:23,290 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:23,290 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:23,290 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:23,290 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:23,290 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:23,290 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:23,291 INFO  L423      AbstractCegarLoop]: === Iteration 145 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:23,291 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:23,291 INFO  L82        PathProgramCache]: Analyzing trace with hash 532909945, now seen corresponding path program 131 times
[2018-10-03 09:19:23,291 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:23,291 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:23,291 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:23,292 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:23,292 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:23,292 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:23,374 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:23,374 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:23,374 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 145 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:23,382 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:23,390 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:19:23,390 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:23,391 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:23,422 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:23,443 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:23,444 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:23,444 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:23,444 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:23,444 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:23,444 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:23,644 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:23,645 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:23,645 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:23,645 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:23,645 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:23,645 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:23,645 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:23,646 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:23,646 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:23,745 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28.
[2018-10-03 09:19:23,745 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:23,745 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:23,745 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:23,745 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:23,745 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:23,745 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:23,745 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:23,745 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:23,746 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:23,746 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:23,746 INFO  L423      AbstractCegarLoop]: === Iteration 146 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:23,746 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:23,746 INFO  L82        PathProgramCache]: Analyzing trace with hash 534755065, now seen corresponding path program 132 times
[2018-10-03 09:19:23,746 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:23,746 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:23,747 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:23,747 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:23,747 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:23,748 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:23,871 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:23,871 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:23,872 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 146 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:23,880 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:23,891 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:19:23,892 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:23,893 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:23,912 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:23,934 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:23,934 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:23,934 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:23,934 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:23,934 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:23,934 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:24,127 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:24,128 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:19:24,128 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:24,128 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:24,128 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:24,129 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:19:24,129 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:19:24,129 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:24,129 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:19:24,230 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30.
[2018-10-03 09:19:24,230 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:24,231 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:24,231 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:24,231 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:24,231 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:24,231 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:24,231 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:24,231 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:24,231 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:24,231 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:24,231 INFO  L423      AbstractCegarLoop]: === Iteration 147 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:24,232 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:24,232 INFO  L82        PathProgramCache]: Analyzing trace with hash 534756987, now seen corresponding path program 133 times
[2018-10-03 09:19:24,232 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:24,232 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:24,232 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:24,232 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:24,232 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:24,233 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:24,302 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:24,302 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:24,302 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 147 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:24,310 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:24,315 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:24,316 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:24,348 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:24,368 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:24,369 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:24,369 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:24,369 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:24,369 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:24,369 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:24,561 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:24,562 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:19:24,562 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:24,562 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:24,562 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:24,563 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:19:24,563 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:19:24,563 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:24,563 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:19:24,659 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26.
[2018-10-03 09:19:24,659 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:24,659 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:24,659 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17
[2018-10-03 09:19:24,659 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:24,659 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:24,659 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:24,659 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:24,660 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:24,660 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:24,660 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:24,660 INFO  L423      AbstractCegarLoop]: === Iteration 148 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:24,660 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:24,660 INFO  L82        PathProgramCache]: Analyzing trace with hash -1987051911, now seen corresponding path program 134 times
[2018-10-03 09:19:24,660 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:24,661 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:24,661 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:24,661 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:24,661 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:24,662 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:24,837 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:24,837 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:24,837 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 148 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:24,846 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:24,851 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:24,851 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:24,851 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:24,881 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:24,903 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:24,903 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:24,903 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:24,903 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:24,903 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:24,903 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states.
[2018-10-03 09:19:25,123 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:25,124 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:25,124 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:25,124 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:25,124 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:25,125 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:25,125 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:25,125 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime 8
[2018-10-03 09:19:25,125 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:25,234 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30.
[2018-10-03 09:19:25,234 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:25,234 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:25,235 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:25,235 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:25,235 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:25,235 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:25,235 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:25,235 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:25,235 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:25,235 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:25,235 INFO  L423      AbstractCegarLoop]: === Iteration 149 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:25,235 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:25,236 INFO  L82        PathProgramCache]: Analyzing trace with hash -1987049989, now seen corresponding path program 135 times
[2018-10-03 09:19:25,236 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:25,236 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:25,236 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:25,236 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:25,236 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:25,237 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:25,305 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:25,305 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:25,305 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 149 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:25,315 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:25,325 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:19:25,326 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:25,326 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:25,363 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:25,384 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:25,385 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:25,385 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:25,385 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:25,385 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:25,385 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:25,577 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:25,577 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:25,577 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:25,577 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:25,577 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:25,578 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:25,578 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:25,578 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:25,578 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:25,683 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28.
[2018-10-03 09:19:25,683 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:25,683 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:25,684 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:25,684 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:25,684 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:25,684 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:25,684 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:25,684 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:25,684 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:25,684 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:25,684 INFO  L423      AbstractCegarLoop]: === Iteration 150 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:25,685 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:25,685 INFO  L82        PathProgramCache]: Analyzing trace with hash -1985204869, now seen corresponding path program 136 times
[2018-10-03 09:19:25,685 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:25,685 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:25,685 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:25,686 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:25,686 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:25,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:25,788 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:25,789 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:25,789 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 150 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:25,810 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:25,816 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:25,816 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:25,817 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:25,850 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:25,872 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:25,872 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:25,872 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:25,872 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:25,872 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:25,872 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:26,064 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:26,065 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:19:26,065 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:26,065 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:26,065 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:26,066 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:19:26,066 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:19:26,066 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:26,066 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:19:26,165 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30.
[2018-10-03 09:19:26,166 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:26,166 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:26,166 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:26,166 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:26,166 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:26,166 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:26,166 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:26,166 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:26,166 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:26,167 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:26,167 INFO  L423      AbstractCegarLoop]: === Iteration 151 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:26,167 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:26,167 INFO  L82        PathProgramCache]: Analyzing trace with hash -1985202947, now seen corresponding path program 137 times
[2018-10-03 09:19:26,167 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:26,167 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:26,167 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:26,168 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:26,168 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:26,168 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:26,236 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:26,236 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:26,236 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 151 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:26,244 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:26,255 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:19:26,255 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:26,256 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:26,302 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:26,322 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:26,323 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:26,323 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:26,323 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:26,323 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:26,323 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:26,509 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:26,510 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:19:26,510 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:26,510 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:26,510 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:26,511 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:19:26,511 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:19:26,511 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:26,511 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:19:26,595 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24.
[2018-10-03 09:19:26,595 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:19:26,595 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:19:26,595 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 17
[2018-10-03 09:19:26,595 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:26,595 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:19:26,595 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:26,595 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:19:26,596 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:26,596 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:26,596 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:26,596 INFO  L423      AbstractCegarLoop]: === Iteration 152 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:26,596 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:26,596 INFO  L82        PathProgramCache]: Analyzing trace with hash 1212966393, now seen corresponding path program 138 times
[2018-10-03 09:19:26,596 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:26,596 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:26,597 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:26,597 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:26,597 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:26,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:26,666 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:26,666 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:26,667 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 152 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:26,674 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:26,681 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:19:26,682 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:26,683 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:26,714 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:26,736 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:26,736 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:26,736 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:26,736 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:26,737 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:26,737 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 10 states.
[2018-10-03 09:19:26,909 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:26,910 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:19:26,910 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:26,910 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:26,910 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:26,911 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:19:26,911 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:19:26,911 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:26,911 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:19:27,024 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30.
[2018-10-03 09:19:27,024 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:27,024 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:27,024 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:27,025 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:27,025 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:27,025 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:27,025 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:27,025 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:27,025 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:27,025 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:27,025 INFO  L423      AbstractCegarLoop]: === Iteration 153 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:27,025 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:27,026 INFO  L82        PathProgramCache]: Analyzing trace with hash 1212968315, now seen corresponding path program 139 times
[2018-10-03 09:19:27,026 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:27,026 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:27,026 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:27,026 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:27,026 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:27,027 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:27,108 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:27,108 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:27,109 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 153 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:27,116 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:27,121 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:27,122 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:27,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:27,186 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:27,186 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:27,186 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:27,186 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:27,186 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:27,186 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:27,357 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:27,358 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:19:27,358 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:27,358 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:27,359 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:27,359 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:19:27,359 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:19:27,359 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:27,360 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:19:27,465 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28.
[2018-10-03 09:19:27,466 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:27,466 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:27,466 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:27,466 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:27,466 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:27,466 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:27,466 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:27,466 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:27,467 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:27,467 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:27,467 INFO  L423      AbstractCegarLoop]: === Iteration 154 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:27,467 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:27,467 INFO  L82        PathProgramCache]: Analyzing trace with hash 1214813435, now seen corresponding path program 140 times
[2018-10-03 09:19:27,467 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:27,467 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:27,467 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:27,468 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:27,468 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:27,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:27,528 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:27,528 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:27,528 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 154 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:27,537 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:27,561 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:27,562 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:27,562 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:27,606 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:27,626 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:27,626 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:27,626 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:27,626 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:27,626 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:27,626 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:27,827 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:27,828 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:19:27,828 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:27,828 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:27,828 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:27,829 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:19:27,829 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:19:27,829 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:27,829 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:19:27,938 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30.
[2018-10-03 09:19:27,938 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:27,938 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:27,938 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:27,939 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:27,939 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:27,939 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:27,939 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:27,939 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:27,939 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:27,939 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:27,939 INFO  L423      AbstractCegarLoop]: === Iteration 155 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:27,939 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:27,939 INFO  L82        PathProgramCache]: Analyzing trace with hash 1214815357, now seen corresponding path program 141 times
[2018-10-03 09:19:27,939 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:27,940 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:27,940 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:27,940 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:27,940 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:27,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:28,007 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:28,008 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:28,008 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 155 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:28,016 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:28,024 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:19:28,024 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:28,025 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:28,069 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:28,088 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:28,088 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:28,088 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:28,088 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:28,089 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:28,089 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:28,282 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:28,282 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:19:28,282 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:28,282 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:28,282 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:28,282 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:19:28,283 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:19:28,283 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:28,283 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:19:28,387 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26.
[2018-10-03 09:19:28,387 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:28,387 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:28,387 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17
[2018-10-03 09:19:28,387 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:28,387 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:28,387 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:28,387 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:28,388 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:28,388 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:28,388 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:28,388 INFO  L423      AbstractCegarLoop]: === Iteration 156 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:28,388 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:28,388 INFO  L82        PathProgramCache]: Analyzing trace with hash -1306993541, now seen corresponding path program 142 times
[2018-10-03 09:19:28,388 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:28,388 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:28,389 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:28,389 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:28,389 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:28,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:28,459 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:28,460 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:28,460 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 156 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:28,468 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:28,476 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:28,476 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:28,477 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:28,504 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:28,526 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:28,526 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:28,526 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:28,526 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:28,526 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:28,526 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states.
[2018-10-03 09:19:28,717 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:28,717 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:19:28,717 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:28,718 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:28,718 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:28,718 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:19:28,718 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:19:28,718 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:28,718 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:19:28,838 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30.
[2018-10-03 09:19:28,838 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:28,838 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:28,838 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:28,839 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:28,839 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:28,839 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:28,839 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:28,839 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:28,839 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:28,839 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:28,839 INFO  L423      AbstractCegarLoop]: === Iteration 157 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:28,839 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:28,839 INFO  L82        PathProgramCache]: Analyzing trace with hash -1306991619, now seen corresponding path program 143 times
[2018-10-03 09:19:28,840 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:28,840 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:28,840 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:28,840 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:28,840 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:28,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:28,897 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:28,897 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:28,897 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 157 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:28,906 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:28,914 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:19:28,914 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:28,915 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:28,959 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:28,980 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:28,980 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:28,980 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:28,980 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:28,980 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:28,981 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:29,138 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:29,139 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:19:29,139 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:29,139 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:29,139 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:29,140 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:19:29,140 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:19:29,140 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:29,140 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:19:29,249 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28.
[2018-10-03 09:19:29,249 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:29,250 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:29,250 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:29,250 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:29,250 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:29,250 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:29,250 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:29,250 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:29,250 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:29,250 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:29,250 INFO  L423      AbstractCegarLoop]: === Iteration 158 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:29,250 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:29,251 INFO  L82        PathProgramCache]: Analyzing trace with hash -1305146499, now seen corresponding path program 144 times
[2018-10-03 09:19:29,251 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:29,251 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:29,251 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:29,251 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:29,251 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:29,252 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:29,313 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:29,313 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:29,313 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 158 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:29,321 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:29,329 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:19:29,329 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:29,330 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:29,368 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:29,389 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:29,389 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:29,390 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:29,390 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:29,390 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:29,390 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:29,556 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:29,557 INFO  L93              Difference]: Finished difference Result 35 states and 49 transitions.
[2018-10-03 09:19:29,557 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:29,557 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:29,557 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:29,558 INFO  L225             Difference]: With dead ends: 35
[2018-10-03 09:19:29,558 INFO  L226             Difference]: Without dead ends: 33
[2018-10-03 09:19:29,558 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:29,558 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-10-03 09:19:29,683 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30.
[2018-10-03 09:19:29,683 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:29,683 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:29,683 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:29,684 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:29,684 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:29,684 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:29,684 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:29,684 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:29,684 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:29,684 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:29,684 INFO  L423      AbstractCegarLoop]: === Iteration 159 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:29,685 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:29,685 INFO  L82        PathProgramCache]: Analyzing trace with hash -1305144577, now seen corresponding path program 145 times
[2018-10-03 09:19:29,685 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:29,685 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:29,686 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:29,686 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:29,686 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:29,687 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:29,767 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:29,768 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:29,768 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 159 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:29,776 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:29,780 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:29,781 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:29,808 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:29,830 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:29,830 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:29,830 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:29,830 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:29,830 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:29,830 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:29,979 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:29,979 INFO  L93              Difference]: Finished difference Result 34 states and 48 transitions.
[2018-10-03 09:19:29,979 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:29,979 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:29,979 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:29,980 INFO  L225             Difference]: With dead ends: 34
[2018-10-03 09:19:29,980 INFO  L226             Difference]: Without dead ends: 32
[2018-10-03 09:19:29,980 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:29,980 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2018-10-03 09:19:30,053 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20.
[2018-10-03 09:19:30,053 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:19:30,053 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:19:30,053 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 17
[2018-10-03 09:19:30,053 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:30,053 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:19:30,053 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:30,054 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:19:30,054 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:30,054 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:30,054 INFO  L375         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1]
[2018-10-03 09:19:30,054 INFO  L423      AbstractCegarLoop]: === Iteration 160 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:30,054 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:30,054 INFO  L82        PathProgramCache]: Analyzing trace with hash -754962569, now seen corresponding path program 146 times
[2018-10-03 09:19:30,054 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:30,054 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:30,055 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:30,055 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:30,055 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:30,056 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:30,129 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:30,129 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:30,129 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 160 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:30,137 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:30,143 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:30,144 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:30,145 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:30,237 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:30,258 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:30,258 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:30,258 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:30,258 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:30,258 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:30,258 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 10 states.
[2018-10-03 09:19:30,516 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:30,517 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:19:30,517 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:30,517 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:30,517 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:30,518 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:19:30,518 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:19:30,518 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:30,518 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:19:30,648 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30.
[2018-10-03 09:19:30,649 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:30,649 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:30,649 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:30,649 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:30,649 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:30,649 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:30,649 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:30,649 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:30,650 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:30,650 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:30,650 INFO  L423      AbstractCegarLoop]: === Iteration 161 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:30,650 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:30,650 INFO  L82        PathProgramCache]: Analyzing trace with hash -754960647, now seen corresponding path program 147 times
[2018-10-03 09:19:30,650 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:30,650 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:30,650 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:30,651 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:30,651 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:30,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:30,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:30,761 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:30,761 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 161 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:30,767 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:30,777 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:19:30,777 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:30,778 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:30,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:30,853 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:30,853 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:30,854 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:30,854 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:30,854 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:30,854 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:31,117 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:31,118 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:19:31,121 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:31,121 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:31,121 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:31,122 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:19:31,122 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:19:31,122 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:31,122 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:19:31,261 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28.
[2018-10-03 09:19:31,261 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:31,261 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:31,262 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:31,262 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:31,262 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:31,262 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:31,262 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:31,262 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:31,262 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:31,262 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:31,262 INFO  L423      AbstractCegarLoop]: === Iteration 162 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:31,262 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:31,263 INFO  L82        PathProgramCache]: Analyzing trace with hash -753115527, now seen corresponding path program 148 times
[2018-10-03 09:19:31,263 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:31,263 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:31,263 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:31,263 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:31,263 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:31,264 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:31,317 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:31,317 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:31,317 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 162 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:31,324 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:31,331 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:31,331 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:31,332 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:31,363 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:31,384 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:31,384 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:31,384 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:31,385 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:31,385 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:31,385 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:31,653 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:31,654 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:19:31,654 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:31,654 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:31,654 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:31,655 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:19:31,655 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:19:31,655 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:31,655 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:19:31,775 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30.
[2018-10-03 09:19:31,776 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:31,776 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:31,776 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:31,776 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:31,776 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:31,776 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:31,776 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:31,776 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:31,776 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:31,776 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:31,777 INFO  L423      AbstractCegarLoop]: === Iteration 163 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:31,777 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:31,777 INFO  L82        PathProgramCache]: Analyzing trace with hash -753113605, now seen corresponding path program 149 times
[2018-10-03 09:19:31,777 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:31,777 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:31,777 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:31,777 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:31,777 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:31,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:31,966 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:31,966 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:31,966 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 163 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:31,974 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:31,983 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:19:31,983 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:31,984 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:32,005 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:32,027 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:32,027 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:32,027 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:32,028 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:32,028 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:32,028 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:32,277 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:32,278 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:19:32,278 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:32,278 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:32,278 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:32,279 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:19:32,279 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:19:32,279 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 8
[2018-10-03 09:19:32,279 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:19:32,396 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26.
[2018-10-03 09:19:32,396 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:32,396 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:32,397 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17
[2018-10-03 09:19:32,397 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:32,397 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:32,397 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:32,397 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:32,397 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:32,397 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:32,397 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:32,397 INFO  L423      AbstractCegarLoop]: === Iteration 164 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:32,397 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:32,397 INFO  L82        PathProgramCache]: Analyzing trace with hash 1020044793, now seen corresponding path program 150 times
[2018-10-03 09:19:32,398 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:32,398 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:32,398 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:32,398 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:32,398 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:32,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:32,527 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:32,527 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:32,527 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 164 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:32,534 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:32,543 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:19:32,543 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:32,544 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:32,578 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:32,600 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:32,600 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:32,600 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:32,600 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:32,600 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:32,600 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states.
[2018-10-03 09:19:32,838 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:32,839 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:19:32,839 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:32,839 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:32,839 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:32,840 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:19:32,840 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:19:32,840 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:32,840 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:19:32,959 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30.
[2018-10-03 09:19:32,959 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:32,959 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:32,959 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:32,959 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:32,959 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:32,959 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:32,959 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:32,960 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:32,960 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:32,960 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:32,960 INFO  L423      AbstractCegarLoop]: === Iteration 165 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:32,960 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:32,960 INFO  L82        PathProgramCache]: Analyzing trace with hash 1020046715, now seen corresponding path program 151 times
[2018-10-03 09:19:32,960 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:32,960 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:32,961 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:32,961 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:32,961 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:32,962 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:33,087 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:33,087 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:33,087 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 165 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:33,096 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:33,101 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:33,102 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:33,122 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:33,143 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:33,144 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:33,144 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:33,144 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:33,144 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:33,144 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:33,378 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:33,379 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:19:33,379 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:33,379 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:33,379 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:33,379 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:19:33,379 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:19:33,379 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:33,380 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:19:33,496 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28.
[2018-10-03 09:19:33,496 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:33,496 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:33,496 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:33,496 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:33,496 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:33,496 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:33,496 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:33,497 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:33,497 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:33,497 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:33,497 INFO  L423      AbstractCegarLoop]: === Iteration 166 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:33,497 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:33,497 INFO  L82        PathProgramCache]: Analyzing trace with hash 1021891835, now seen corresponding path program 152 times
[2018-10-03 09:19:33,497 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:33,497 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:33,498 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:33,498 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:33,498 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:33,499 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:33,564 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:33,564 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:33,565 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 166 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:33,573 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:33,578 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:33,579 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:33,580 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:33,610 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:33,631 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:33,631 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:33,631 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:33,631 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:33,631 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:33,632 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:33,870 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:33,871 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:33,871 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:33,871 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:33,871 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:33,871 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:33,871 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:33,871 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:33,872 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:33,992 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30.
[2018-10-03 09:19:33,992 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:33,992 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:33,992 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:33,992 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:33,992 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:33,992 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:33,992 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:33,993 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:33,993 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:33,993 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:33,993 INFO  L423      AbstractCegarLoop]: === Iteration 167 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:33,993 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:33,993 INFO  L82        PathProgramCache]: Analyzing trace with hash 1021893757, now seen corresponding path program 153 times
[2018-10-03 09:19:33,993 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:33,993 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:33,994 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:33,994 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:33,994 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:33,995 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:34,062 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:34,062 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:34,062 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 167 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:34,070 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:34,078 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:19:34,078 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:34,079 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:34,106 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:34,128 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:34,128 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:34,128 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:34,128 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:34,128 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:34,128 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:34,353 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:34,354 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:19:34,354 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:34,354 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:34,354 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:34,354 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:19:34,354 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:19:34,354 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:34,355 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:19:34,458 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 24.
[2018-10-03 09:19:34,458 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:19:34,458 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:19:34,459 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 17
[2018-10-03 09:19:34,459 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:34,459 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:19:34,459 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:34,459 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:19:34,459 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:34,459 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:34,459 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:34,459 INFO  L423      AbstractCegarLoop]: === Iteration 168 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:34,459 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:34,460 INFO  L82        PathProgramCache]: Analyzing trace with hash -74904199, now seen corresponding path program 154 times
[2018-10-03 09:19:34,460 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:34,460 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:34,460 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:34,460 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:34,460 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:34,461 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:34,513 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:34,513 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:34,513 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 168 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:34,521 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:34,543 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:34,544 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:34,544 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:34,584 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:34,603 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:34,604 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:34,604 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:34,604 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:34,604 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:34,604 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 10 states.
[2018-10-03 09:19:34,869 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:34,870 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:19:34,870 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:34,870 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:34,870 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:34,871 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:19:34,871 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:19:34,871 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:34,871 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:19:34,993 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30.
[2018-10-03 09:19:34,993 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:34,993 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:34,993 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:34,993 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:34,994 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:34,994 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:34,994 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:34,994 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:34,994 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:34,994 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:34,994 INFO  L423      AbstractCegarLoop]: === Iteration 169 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:34,994 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:34,995 INFO  L82        PathProgramCache]: Analyzing trace with hash -74902277, now seen corresponding path program 155 times
[2018-10-03 09:19:34,995 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:34,995 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:34,995 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:34,995 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:34,996 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:34,996 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:35,329 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:35,330 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:35,330 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 169 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:35,345 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:35,442 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:19:35,443 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:35,444 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:35,845 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:35,864 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:35,864 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:35,864 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:35,865 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:35,865 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:35,865 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:36,119 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:36,120 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:19:36,120 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:36,120 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:36,120 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:36,121 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:19:36,121 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:19:36,121 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s Time 0.2s impTime 8
[2018-10-03 09:19:36,121 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:19:36,240 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 28.
[2018-10-03 09:19:36,241 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:36,241 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:36,241 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:36,241 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:36,241 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:36,241 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:36,241 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:36,241 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:36,242 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:36,242 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:36,242 INFO  L423      AbstractCegarLoop]: === Iteration 170 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:36,242 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:36,242 INFO  L82        PathProgramCache]: Analyzing trace with hash -73057157, now seen corresponding path program 156 times
[2018-10-03 09:19:36,242 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:36,242 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:36,243 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:36,243 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:36,243 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:36,244 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:36,329 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:36,329 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:36,329 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 170 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:36,338 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:36,347 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:19:36,347 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:36,348 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:36,396 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:36,416 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:36,417 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:36,417 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:36,417 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:36,417 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:36,417 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:36,691 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:36,692 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:19:36,692 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:36,692 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:36,692 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:36,692 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:19:36,692 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:19:36,692 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:36,693 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:19:36,820 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30.
[2018-10-03 09:19:36,820 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:36,821 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:36,821 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:36,821 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:36,821 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:36,821 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:36,821 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:36,821 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:36,821 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:36,821 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:36,822 INFO  L423      AbstractCegarLoop]: === Iteration 171 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:36,822 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:36,822 INFO  L82        PathProgramCache]: Analyzing trace with hash -73055235, now seen corresponding path program 157 times
[2018-10-03 09:19:36,822 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:36,822 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:36,823 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:36,823 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:36,823 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:36,824 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:36,894 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:36,894 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:36,894 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 171 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:36,903 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:36,908 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:36,909 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:36,949 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:36,968 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:36,968 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:36,969 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:36,969 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:36,969 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:36,969 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:37,228 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:37,229 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:19:37,229 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:37,229 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:37,229 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:37,230 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:19:37,230 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:19:37,230 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:37,230 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:19:37,341 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26.
[2018-10-03 09:19:37,341 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:37,341 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:37,342 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17
[2018-10-03 09:19:37,342 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:37,342 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:37,342 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:37,342 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:37,342 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:37,342 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:37,342 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:37,342 INFO  L423      AbstractCegarLoop]: === Iteration 172 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:37,342 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:37,343 INFO  L82        PathProgramCache]: Analyzing trace with hash 1700103163, now seen corresponding path program 158 times
[2018-10-03 09:19:37,343 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:37,343 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:37,343 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:37,343 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:37,343 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:37,344 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:37,411 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:37,411 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:37,411 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 172 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:37,420 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:37,425 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:37,425 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:37,426 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:37,458 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:37,479 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:37,480 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:37,480 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:37,480 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:37,480 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:37,480 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states.
[2018-10-03 09:19:37,728 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:37,729 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:19:37,729 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:37,729 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:37,729 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:37,730 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:19:37,730 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:19:37,730 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:37,730 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:19:37,854 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30.
[2018-10-03 09:19:37,854 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:37,854 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:37,855 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:37,855 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:37,855 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:37,855 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:37,855 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:37,855 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:37,855 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:37,855 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:37,855 INFO  L423      AbstractCegarLoop]: === Iteration 173 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:37,855 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:37,855 INFO  L82        PathProgramCache]: Analyzing trace with hash 1700105085, now seen corresponding path program 159 times
[2018-10-03 09:19:37,856 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:37,856 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:37,856 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:37,856 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:37,856 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:37,857 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:37,921 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:37,922 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:37,922 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 173 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:37,930 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:37,937 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:19:37,937 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:37,938 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:37,996 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:38,018 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:38,018 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:38,018 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:38,018 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:38,018 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:38,019 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:38,293 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:38,293 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:19:38,293 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:38,293 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:38,293 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:38,294 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:19:38,294 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:19:38,294 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:38,294 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:19:38,413 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28.
[2018-10-03 09:19:38,413 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:38,413 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:38,413 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:38,413 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:38,413 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:38,413 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:38,414 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:38,414 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:38,414 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:38,414 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:38,414 INFO  L423      AbstractCegarLoop]: === Iteration 174 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:38,414 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:38,414 INFO  L82        PathProgramCache]: Analyzing trace with hash 1701950205, now seen corresponding path program 160 times
[2018-10-03 09:19:38,414 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:38,414 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:38,415 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:38,415 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:38,415 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:38,416 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:38,481 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:38,482 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:38,482 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 174 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:38,490 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:38,495 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:38,495 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:38,495 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:38,524 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:38,545 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:38,546 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:38,546 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:38,546 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:38,546 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:38,546 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:38,789 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:38,790 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:38,790 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:38,790 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:38,790 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:38,791 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:38,791 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:38,791 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:38,791 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:38,914 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30.
[2018-10-03 09:19:38,914 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:38,914 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:38,914 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:38,914 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:38,914 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:38,914 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:38,914 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:38,915 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:38,915 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:38,915 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:38,915 INFO  L423      AbstractCegarLoop]: === Iteration 175 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:38,915 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:38,915 INFO  L82        PathProgramCache]: Analyzing trace with hash 1701952127, now seen corresponding path program 161 times
[2018-10-03 09:19:38,915 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:38,915 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:38,916 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:38,916 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:38,916 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:38,916 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:39,005 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:39,005 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:39,005 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 175 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:39,021 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:39,045 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:19:39,045 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:39,046 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:39,071 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:39,091 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:39,091 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:39,091 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:39,092 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:39,092 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:39,092 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:39,451 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:39,451 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:19:39,451 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:39,452 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:39,452 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:39,452 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:19:39,452 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:19:39,452 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:39,452 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:19:39,611 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 22.
[2018-10-03 09:19:39,612 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:19:39,612 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:19:39,612 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 17
[2018-10-03 09:19:39,612 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:39,612 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:19:39,612 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:39,613 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:19:39,613 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:39,613 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:39,613 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:39,613 INFO  L423      AbstractCegarLoop]: === Iteration 176 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:39,613 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:39,613 INFO  L82        PathProgramCache]: Analyzing trace with hash -53897991, now seen corresponding path program 162 times
[2018-10-03 09:19:39,614 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:39,614 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:39,614 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:39,614 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:39,614 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:39,615 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:39,985 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:39,986 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:39,986 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 176 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:39,997 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:40,004 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:19:40,005 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:40,005 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:40,028 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:40,049 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:40,049 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:40,049 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:40,049 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:40,049 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:40,049 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 10 states.
[2018-10-03 09:19:40,287 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:40,288 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:40,288 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:40,288 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:40,288 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:40,289 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:40,289 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:40,289 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 8
[2018-10-03 09:19:40,289 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:40,421 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30.
[2018-10-03 09:19:40,421 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:40,421 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:40,421 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:40,421 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:40,421 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:40,422 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:40,422 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:40,422 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:40,422 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:40,422 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:40,422 INFO  L423      AbstractCegarLoop]: === Iteration 177 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:40,422 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:40,422 INFO  L82        PathProgramCache]: Analyzing trace with hash -53896069, now seen corresponding path program 163 times
[2018-10-03 09:19:40,422 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:40,422 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:40,423 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:40,423 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:40,423 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:40,424 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:40,488 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:40,488 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:40,488 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 177 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:40,496 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:40,516 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:40,517 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:40,608 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:40,639 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:40,639 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:40,639 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:40,639 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:40,639 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:40,640 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:41,011 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:41,011 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:41,011 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:41,011 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:41,011 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:41,012 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:41,012 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:41,012 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:41,012 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:41,140 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28.
[2018-10-03 09:19:41,140 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:41,140 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:41,140 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:41,141 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:41,141 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:41,141 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:41,141 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:41,141 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:41,141 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:41,141 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:41,141 INFO  L423      AbstractCegarLoop]: === Iteration 178 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:41,141 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:41,141 INFO  L82        PathProgramCache]: Analyzing trace with hash -52050949, now seen corresponding path program 164 times
[2018-10-03 09:19:41,141 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:41,142 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:41,142 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:41,142 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:41,142 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:41,143 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:41,227 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:41,227 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:41,227 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 178 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:41,236 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:41,242 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:41,242 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:41,243 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:41,283 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:41,304 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:41,304 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:41,304 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:41,304 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:41,304 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:41,304 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:41,536 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:41,537 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:19:41,537 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:41,537 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:41,537 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:41,538 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:19:41,538 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:19:41,538 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:41,538 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:19:41,671 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30.
[2018-10-03 09:19:41,671 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:41,672 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:41,672 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:41,672 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:41,672 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:41,672 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:41,672 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:41,672 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:41,672 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:41,672 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:41,672 INFO  L423      AbstractCegarLoop]: === Iteration 179 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:41,673 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:41,673 INFO  L82        PathProgramCache]: Analyzing trace with hash -52049027, now seen corresponding path program 165 times
[2018-10-03 09:19:41,673 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:41,673 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:41,673 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:41,673 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:41,673 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:41,674 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:41,736 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:41,737 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:41,737 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 179 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:41,746 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:41,754 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:19:41,755 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:41,755 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:41,794 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:41,816 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:41,816 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:41,816 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:41,816 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:41,816 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:41,816 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:42,034 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:42,035 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:19:42,035 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:42,035 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:42,035 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:42,036 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:19:42,036 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:19:42,036 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:42,036 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:19:42,156 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 26.
[2018-10-03 09:19:42,156 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:42,157 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:42,157 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17
[2018-10-03 09:19:42,157 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:42,157 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:42,157 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:42,157 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:42,157 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:42,157 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:42,157 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:42,157 INFO  L423      AbstractCegarLoop]: === Iteration 180 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:42,157 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:42,158 INFO  L82        PathProgramCache]: Analyzing trace with hash 1721109371, now seen corresponding path program 166 times
[2018-10-03 09:19:42,158 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:42,158 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:42,158 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:42,158 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:42,158 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:42,159 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:42,229 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:42,229 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:42,230 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 180 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:42,237 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:42,245 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:42,246 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:42,246 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:42,286 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:42,307 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:42,307 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:42,307 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:42,307 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:42,307 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:42,307 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states.
[2018-10-03 09:19:42,556 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:42,557 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:42,557 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:42,557 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:42,557 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:42,558 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:42,558 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:42,558 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:42,558 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:42,703 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30.
[2018-10-03 09:19:42,703 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:42,703 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:42,703 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:42,703 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:42,703 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:42,704 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:42,704 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:42,704 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:42,704 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:42,704 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:42,704 INFO  L423      AbstractCegarLoop]: === Iteration 181 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:42,704 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:42,704 INFO  L82        PathProgramCache]: Analyzing trace with hash 1721111293, now seen corresponding path program 167 times
[2018-10-03 09:19:42,704 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:42,704 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:42,705 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:42,705 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:42,705 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:42,706 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:42,771 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:42,771 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:42,771 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 181 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:42,778 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:42,786 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:19:42,786 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:42,787 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:42,832 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:42,853 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:42,853 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:42,853 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:42,853 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:42,854 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:42,854 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:43,103 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:43,104 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:19:43,104 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:43,104 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:43,104 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:43,105 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:19:43,105 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:19:43,105 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:43,105 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:19:43,236 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28.
[2018-10-03 09:19:43,236 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:43,236 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:43,236 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:43,237 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:43,237 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:43,237 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:43,237 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:43,237 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:43,237 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:43,237 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:43,237 INFO  L423      AbstractCegarLoop]: === Iteration 182 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:43,237 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:43,237 INFO  L82        PathProgramCache]: Analyzing trace with hash 1722956413, now seen corresponding path program 168 times
[2018-10-03 09:19:43,237 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:43,238 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:43,238 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:43,238 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:43,238 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:43,239 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:43,304 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:43,305 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:43,305 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 182 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:43,313 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:43,323 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:19:43,324 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:43,324 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:43,366 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:43,387 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:43,387 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:43,387 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:43,387 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:43,387 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:43,387 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:43,631 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:43,632 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:19:43,632 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:43,632 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:43,632 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:43,633 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:19:43,633 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:19:43,633 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:43,633 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:19:43,770 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30.
[2018-10-03 09:19:43,770 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:43,770 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:43,771 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:43,771 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:43,771 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:43,771 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:43,771 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:43,771 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:43,771 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:43,771 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:43,772 INFO  L423      AbstractCegarLoop]: === Iteration 183 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:43,772 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:43,772 INFO  L82        PathProgramCache]: Analyzing trace with hash 1722958335, now seen corresponding path program 169 times
[2018-10-03 09:19:43,772 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:43,772 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:43,772 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:43,773 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:43,773 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:43,773 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:43,828 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:43,828 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:43,828 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 183 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:43,835 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:43,841 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:43,842 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:43,876 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:43,898 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:43,898 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:43,898 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:43,898 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:43,898 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:43,898 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:44,123 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:44,124 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:19:44,124 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:44,124 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:44,124 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:44,125 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:19:44,125 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:19:44,125 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:44,125 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:19:44,233 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 24.
[2018-10-03 09:19:44,233 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:19:44,233 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:19:44,233 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 17
[2018-10-03 09:19:44,233 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:44,233 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:19:44,233 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:44,233 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:19:44,233 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:44,234 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:44,234 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:44,234 INFO  L423      AbstractCegarLoop]: === Iteration 184 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:44,234 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:44,234 INFO  L82        PathProgramCache]: Analyzing trace with hash 626160379, now seen corresponding path program 170 times
[2018-10-03 09:19:44,234 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:44,234 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:44,234 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:44,235 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:44,235 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:44,235 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:44,442 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:44,443 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:44,443 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 184 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:44,450 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:44,455 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:44,456 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:44,457 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:44,476 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:44,498 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:44,498 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:44,498 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:44,498 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:44,498 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:44,498 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 10 states.
[2018-10-03 09:19:44,717 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:44,718 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:19:44,718 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:44,718 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:44,718 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:44,719 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:19:44,719 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:19:44,719 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 8
[2018-10-03 09:19:44,719 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:19:44,862 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30.
[2018-10-03 09:19:44,862 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:44,862 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:44,862 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:44,862 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:44,862 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:44,863 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:44,863 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:44,863 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:44,863 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:44,863 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:44,863 INFO  L423      AbstractCegarLoop]: === Iteration 185 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:44,863 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:44,864 INFO  L82        PathProgramCache]: Analyzing trace with hash 626162301, now seen corresponding path program 171 times
[2018-10-03 09:19:44,864 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:44,864 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:44,864 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:44,864 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:44,864 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:44,865 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:44,991 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:44,992 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:44,992 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 185 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:45,000 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:45,009 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:19:45,009 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:45,010 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:45,031 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:45,052 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:45,052 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:45,052 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:45,053 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:45,053 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:45,053 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:45,266 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:45,267 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:19:45,267 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:45,267 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:45,267 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:45,267 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:19:45,267 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:19:45,267 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:45,268 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:19:45,396 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28.
[2018-10-03 09:19:45,396 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:45,396 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:45,396 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:45,396 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:45,396 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:45,396 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:45,396 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:45,396 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:45,397 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:45,397 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:45,397 INFO  L423      AbstractCegarLoop]: === Iteration 186 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:45,397 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:45,397 INFO  L82        PathProgramCache]: Analyzing trace with hash 628007421, now seen corresponding path program 172 times
[2018-10-03 09:19:45,397 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:45,397 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:45,397 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:45,398 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:45,398 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:45,399 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:45,506 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:45,506 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:45,506 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 186 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:45,514 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:45,519 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:45,519 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:45,520 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:45,561 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:45,581 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:45,581 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:45,581 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:45,581 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:45,581 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:45,581 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:45,811 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:45,812 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:19:45,812 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:45,812 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:45,812 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:45,813 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:19:45,813 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:19:45,813 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:45,813 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:19:45,961 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30.
[2018-10-03 09:19:45,961 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:45,961 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:45,961 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:45,961 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:45,961 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:45,961 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:45,962 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:45,962 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:45,962 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:45,962 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:45,962 INFO  L423      AbstractCegarLoop]: === Iteration 187 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:45,962 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:45,962 INFO  L82        PathProgramCache]: Analyzing trace with hash 628009343, now seen corresponding path program 173 times
[2018-10-03 09:19:45,962 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:45,962 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:45,963 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:45,963 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:45,963 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:45,964 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:46,091 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:46,091 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:46,091 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 187 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:46,097 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:46,107 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:19:46,107 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:46,108 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:46,158 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:46,177 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:46,178 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:46,178 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:46,178 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:46,178 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:46,178 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:46,398 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:46,399 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:19:46,399 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:46,399 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:46,399 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:46,400 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:19:46,400 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:19:46,400 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:46,400 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:19:46,529 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26.
[2018-10-03 09:19:46,529 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:46,529 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:46,529 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17
[2018-10-03 09:19:46,529 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:46,530 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:46,530 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:46,530 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:46,530 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:46,530 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:46,530 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:46,530 INFO  L423      AbstractCegarLoop]: === Iteration 188 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:46,530 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:46,530 INFO  L82        PathProgramCache]: Analyzing trace with hash -1893799555, now seen corresponding path program 174 times
[2018-10-03 09:19:46,530 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:46,531 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:46,531 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:46,531 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:46,531 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:46,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:46,606 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:46,607 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:46,607 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 188 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:46,615 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:46,637 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:19:46,637 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:46,637 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:46,659 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:46,680 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:46,680 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:46,681 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:46,681 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:46,681 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:46,681 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states.
[2018-10-03 09:19:46,929 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:46,930 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:19:46,930 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:46,930 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:46,930 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:46,931 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:19:46,931 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:19:46,931 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:46,931 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:19:47,070 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30.
[2018-10-03 09:19:47,071 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:47,071 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:47,071 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:47,071 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:47,071 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:47,071 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:47,071 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:47,071 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:47,071 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:47,072 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:47,072 INFO  L423      AbstractCegarLoop]: === Iteration 189 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:47,072 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:47,072 INFO  L82        PathProgramCache]: Analyzing trace with hash -1893797633, now seen corresponding path program 175 times
[2018-10-03 09:19:47,072 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:47,072 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:47,073 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:47,073 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:47,073 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:47,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:47,129 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:47,130 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:47,130 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 189 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:47,137 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:47,143 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:47,144 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:47,191 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:47,211 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:47,211 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:47,211 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:47,212 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:47,212 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:47,212 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:47,417 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:47,418 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:19:47,418 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:47,418 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:47,418 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:47,418 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:19:47,418 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:19:47,419 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:47,419 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:19:47,557 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28.
[2018-10-03 09:19:47,557 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:47,557 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:47,558 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:47,558 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:47,558 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:47,558 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:47,558 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:47,558 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:47,558 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:47,558 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:47,558 INFO  L423      AbstractCegarLoop]: === Iteration 190 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:47,558 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:47,559 INFO  L82        PathProgramCache]: Analyzing trace with hash -1891952513, now seen corresponding path program 176 times
[2018-10-03 09:19:47,559 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:47,559 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:47,559 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:47,559 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:47,559 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:47,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:47,615 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:47,615 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:47,615 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 190 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:47,625 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:47,630 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:47,631 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:47,632 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:47,679 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:47,698 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:47,698 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:47,698 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:47,699 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:47,699 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:47,699 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:47,888 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:47,889 INFO  L93              Difference]: Finished difference Result 35 states and 49 transitions.
[2018-10-03 09:19:47,889 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:47,889 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:47,889 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:47,890 INFO  L225             Difference]: With dead ends: 35
[2018-10-03 09:19:47,890 INFO  L226             Difference]: Without dead ends: 33
[2018-10-03 09:19:47,890 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:47,890 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-10-03 09:19:48,028 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30.
[2018-10-03 09:19:48,028 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:48,028 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:48,028 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:48,028 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:48,028 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:48,028 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:48,029 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:48,029 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:48,029 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:48,029 INFO  L375         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1]
[2018-10-03 09:19:48,029 INFO  L423      AbstractCegarLoop]: === Iteration 191 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:48,029 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:48,029 INFO  L82        PathProgramCache]: Analyzing trace with hash -1891950591, now seen corresponding path program 177 times
[2018-10-03 09:19:48,029 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:48,030 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:48,030 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:48,030 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:48,030 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:48,031 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:48,094 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:48,094 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:48,094 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 191 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:48,103 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:48,112 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:19:48,112 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:48,113 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:48,145 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:48,167 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:48,167 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:48,167 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:48,167 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:48,167 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:48,167 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:48,343 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:48,343 INFO  L93              Difference]: Finished difference Result 34 states and 48 transitions.
[2018-10-03 09:19:48,343 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:48,343 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:48,343 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:48,344 INFO  L225             Difference]: With dead ends: 34
[2018-10-03 09:19:48,344 INFO  L226             Difference]: Without dead ends: 32
[2018-10-03 09:19:48,344 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:48,344 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2018-10-03 09:19:48,434 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 20.
[2018-10-03 09:19:48,434 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:19:48,434 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:19:48,434 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 17
[2018-10-03 09:19:48,434 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:48,434 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:19:48,434 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:48,434 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:19:48,435 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:48,435 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:48,435 INFO  L375         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1]
[2018-10-03 09:19:48,435 INFO  L423      AbstractCegarLoop]: === Iteration 192 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:48,435 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:48,435 INFO  L82        PathProgramCache]: Analyzing trace with hash -1448020233, now seen corresponding path program 178 times
[2018-10-03 09:19:48,435 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:48,435 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:48,436 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:48,436 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:48,436 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:48,437 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:49,039 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:49,039 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:49,039 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 192 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:49,053 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:49,061 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:49,062 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:49,062 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:49,104 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:49,125 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:49,125 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:49,125 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:49,126 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:49,126 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:49,126 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 10 states.
[2018-10-03 09:19:49,501 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:49,502 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:19:49,502 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:49,502 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:49,502 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:49,503 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:19:49,503 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:19:49,503 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s Time 0.3s impTime 8
[2018-10-03 09:19:49,503 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:19:49,678 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 32.
[2018-10-03 09:19:49,678 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:19:49,678 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:19:49,678 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:19:49,679 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:49,679 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:19:49,679 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:49,679 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:19:49,679 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:49,679 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:49,679 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:49,680 INFO  L423      AbstractCegarLoop]: === Iteration 193 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:49,680 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:49,680 INFO  L82        PathProgramCache]: Analyzing trace with hash -1448018311, now seen corresponding path program 179 times
[2018-10-03 09:19:49,680 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:49,680 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:49,681 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:49,681 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:49,681 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:49,682 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:49,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:49,749 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:49,749 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 193 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:49,760 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:49,768 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:19:49,768 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:49,769 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:49,809 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:49,830 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:49,831 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:49,831 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:49,831 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:49,831 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:49,831 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:19:50,222 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:50,223 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:19:50,223 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:50,223 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:50,223 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:50,224 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:19:50,224 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:19:50,224 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:50,224 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:19:50,387 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 30.
[2018-10-03 09:19:50,387 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:50,387 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:50,387 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:50,388 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:50,388 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:50,388 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:50,388 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:50,388 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:50,388 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:50,388 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:50,388 INFO  L423      AbstractCegarLoop]: === Iteration 194 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:50,388 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:50,388 INFO  L82        PathProgramCache]: Analyzing trace with hash -1446173191, now seen corresponding path program 180 times
[2018-10-03 09:19:50,389 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:50,389 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:50,389 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:50,389 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:50,389 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:50,390 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:50,445 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:50,445 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:50,445 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 194 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:50,453 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:50,462 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:19:50,462 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:50,463 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:50,512 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:50,534 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:50,534 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:50,535 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:50,535 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:50,535 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:50,535 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:50,935 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:50,936 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:19:50,936 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:50,936 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:50,936 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:50,936 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:19:50,936 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:19:50,937 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:50,937 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:19:51,142 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 32.
[2018-10-03 09:19:51,142 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:19:51,142 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:19:51,143 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:19:51,143 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:51,143 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:19:51,143 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:51,143 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:19:51,143 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:51,143 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:51,143 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:51,144 INFO  L423      AbstractCegarLoop]: === Iteration 195 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:51,144 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:51,144 INFO  L82        PathProgramCache]: Analyzing trace with hash -1446171269, now seen corresponding path program 181 times
[2018-10-03 09:19:51,144 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:51,144 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:51,144 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:51,145 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:51,145 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:51,145 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:51,250 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:51,250 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:51,250 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 195 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:51,257 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:51,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:51,263 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:51,320 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:51,340 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:51,340 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:51,340 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:51,340 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:51,340 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:51,341 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:19:51,698 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:51,699 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:19:51,704 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:51,705 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:51,705 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:51,705 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:19:51,705 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:19:51,705 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:51,706 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:19:51,865 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 28.
[2018-10-03 09:19:51,865 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:51,865 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:51,866 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:51,866 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:51,866 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:51,866 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:51,866 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:51,866 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:51,866 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:51,866 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:51,866 INFO  L423      AbstractCegarLoop]: === Iteration 196 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:51,866 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:51,867 INFO  L82        PathProgramCache]: Analyzing trace with hash 326987129, now seen corresponding path program 182 times
[2018-10-03 09:19:51,867 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:51,867 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:51,867 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:51,867 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:51,867 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:51,868 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:51,923 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:51,924 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:51,924 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 196 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:51,932 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:51,938 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:51,938 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:51,939 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:51,979 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:52,000 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:52,000 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:52,000 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:52,000 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:52,000 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:52,001 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:52,391 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:52,392 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:19:52,392 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:52,392 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:52,392 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:52,392 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:19:52,392 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:19:52,392 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:52,393 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:19:52,557 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 32.
[2018-10-03 09:19:52,557 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:19:52,558 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:19:52,558 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:19:52,558 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:52,558 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:19:52,558 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:52,558 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:19:52,558 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:52,558 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:52,558 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:52,558 INFO  L423      AbstractCegarLoop]: === Iteration 197 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:52,558 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:52,559 INFO  L82        PathProgramCache]: Analyzing trace with hash 326989051, now seen corresponding path program 183 times
[2018-10-03 09:19:52,559 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:52,559 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:52,559 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:52,559 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:52,559 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:52,560 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:52,627 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:52,627 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:52,627 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 197 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:52,636 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:52,644 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:19:52,644 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:52,645 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:52,681 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:52,702 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:52,702 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:52,702 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:52,703 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:52,703 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:52,703 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:19:53,086 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:53,087 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:19:53,087 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:53,087 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:53,087 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:53,088 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:19:53,088 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:19:53,088 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:53,088 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:19:53,244 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 30.
[2018-10-03 09:19:53,244 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:53,244 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:53,244 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:53,244 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:53,244 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:53,244 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:53,244 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:53,244 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:53,245 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:53,245 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:53,245 INFO  L423      AbstractCegarLoop]: === Iteration 198 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:53,245 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:53,245 INFO  L82        PathProgramCache]: Analyzing trace with hash 328834171, now seen corresponding path program 184 times
[2018-10-03 09:19:53,245 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:53,245 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:53,245 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:53,246 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:53,246 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:53,246 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:53,313 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:53,313 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:53,313 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 198 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:53,321 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:53,328 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:53,328 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:53,329 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:53,366 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:53,386 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:53,386 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:53,387 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:53,387 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:53,387 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:53,387 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:53,759 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:53,760 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:19:53,760 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:53,760 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:53,760 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:53,760 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:19:53,760 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:19:53,760 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:53,761 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:19:53,922 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 32.
[2018-10-03 09:19:53,923 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:19:53,923 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:19:53,923 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:19:53,923 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:53,923 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:19:53,923 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:53,923 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:19:53,923 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:53,923 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:53,923 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:53,924 INFO  L423      AbstractCegarLoop]: === Iteration 199 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:53,924 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:53,924 INFO  L82        PathProgramCache]: Analyzing trace with hash 328836093, now seen corresponding path program 185 times
[2018-10-03 09:19:53,924 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:53,924 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:53,924 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:53,924 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:53,924 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:53,925 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:53,983 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:53,983 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:53,983 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 199 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:53,992 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:54,001 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:19:54,001 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:54,002 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:54,047 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:54,077 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:54,078 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:54,078 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:54,078 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:54,078 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:54,078 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:19:54,625 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:54,626 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:19:54,626 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:54,626 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:54,626 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:54,627 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:19:54,627 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:19:54,627 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:54,627 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:19:54,767 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 26.
[2018-10-03 09:19:54,767 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:19:54,767 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:19:54,767 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17
[2018-10-03 09:19:54,768 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:54,768 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:19:54,768 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:54,768 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:19:54,768 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:54,768 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:54,768 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:19:54,768 INFO  L423      AbstractCegarLoop]: === Iteration 200 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:54,768 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:54,768 INFO  L82        PathProgramCache]: Analyzing trace with hash -767961863, now seen corresponding path program 186 times
[2018-10-03 09:19:54,768 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:54,768 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:54,769 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:54,769 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:54,769 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:54,770 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:54,834 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:54,834 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:54,834 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 200 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:54,843 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:19:54,851 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:19:54,852 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:54,853 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:54,888 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:54,909 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:54,909 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:54,909 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:54,909 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:54,909 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:54,910 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states.
[2018-10-03 09:19:55,274 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:55,275 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:19:55,275 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:55,275 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:55,275 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:55,276 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:19:55,276 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:19:55,276 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:55,276 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:19:55,456 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32.
[2018-10-03 09:19:55,456 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:19:55,456 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:19:55,456 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:19:55,456 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:55,456 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:19:55,456 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:55,456 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:19:55,457 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:55,457 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:55,457 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:55,457 INFO  L423      AbstractCegarLoop]: === Iteration 201 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:55,457 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:55,457 INFO  L82        PathProgramCache]: Analyzing trace with hash -767959941, now seen corresponding path program 187 times
[2018-10-03 09:19:55,457 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:55,457 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:55,458 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:55,458 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:55,458 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:55,458 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:55,526 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:55,526 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:55,526 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 201 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:55,535 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:55,539 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:55,540 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:55,577 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:55,606 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:55,606 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:55,606 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:55,607 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:55,607 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:55,607 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:19:55,951 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:55,952 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:19:55,952 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:55,952 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:55,952 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:55,952 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:19:55,952 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:19:55,952 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:55,953 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:19:56,111 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30.
[2018-10-03 09:19:56,111 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:19:56,111 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:19:56,111 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:19:56,111 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:56,111 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:19:56,112 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:56,112 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:19:56,112 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:56,112 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:56,112 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:56,112 INFO  L423      AbstractCegarLoop]: === Iteration 202 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:56,112 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:56,112 INFO  L82        PathProgramCache]: Analyzing trace with hash -766114821, now seen corresponding path program 188 times
[2018-10-03 09:19:56,112 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:56,112 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:56,113 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:56,113 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:19:56,113 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:56,114 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:56,245 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:56,245 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:56,245 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 202 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:56,252 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:19:56,258 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:19:56,258 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:56,259 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:56,314 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:56,333 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:56,333 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:56,334 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:56,334 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:56,334 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:56,334 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:19:56,691 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:56,692 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:19:56,692 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:56,692 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:56,692 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:56,693 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:19:56,693 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:19:56,693 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:56,693 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:19:56,858 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32.
[2018-10-03 09:19:56,858 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:19:56,858 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:19:56,859 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:19:56,859 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:56,859 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:19:56,859 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:56,859 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:19:56,859 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:56,859 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:56,859 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:56,859 INFO  L423      AbstractCegarLoop]: === Iteration 203 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:56,859 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:56,859 INFO  L82        PathProgramCache]: Analyzing trace with hash -766112899, now seen corresponding path program 189 times
[2018-10-03 09:19:56,859 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:56,860 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:56,860 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:56,860 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:56,860 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:56,861 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:57,961 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:57,961 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:57,961 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 203 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:57,976 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:19:58,071 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:19:58,072 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:58,073 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:58,098 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:58,124 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:58,124 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:58,124 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:58,124 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:58,124 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:58,124 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:19:58,584 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:58,585 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:19:58,585 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:58,585 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:58,585 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:58,586 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:19:58,586 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:19:58,586 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 8
[2018-10-03 09:19:58,586 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:19:58,751 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 28.
[2018-10-03 09:19:58,752 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:19:58,752 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:19:58,752 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:19:58,752 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:58,752 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:19:58,752 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:58,752 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:19:58,752 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:58,752 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:58,752 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:58,753 INFO  L423      AbstractCegarLoop]: === Iteration 204 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:58,753 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:58,753 INFO  L82        PathProgramCache]: Analyzing trace with hash 1007045499, now seen corresponding path program 190 times
[2018-10-03 09:19:58,753 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:58,753 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:58,753 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:58,753 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:58,754 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:58,754 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:58,847 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:58,848 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:58,848 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 204 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:58,856 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:19:58,861 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:19:58,861 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:58,862 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:58,886 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:58,908 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:58,908 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:58,908 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:58,908 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:58,908 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:58,908 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:19:59,237 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:59,238 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:19:59,238 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:59,238 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:59,238 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:59,239 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:19:59,239 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:19:59,239 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:19:59,239 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:19:59,408 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32.
[2018-10-03 09:19:59,409 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:19:59,409 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:19:59,409 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:19:59,409 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:19:59,409 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:19:59,409 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:19:59,409 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:19:59,409 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:19:59,409 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:19:59,409 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:19:59,410 INFO  L423      AbstractCegarLoop]: === Iteration 205 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:19:59,410 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:19:59,410 INFO  L82        PathProgramCache]: Analyzing trace with hash 1007047421, now seen corresponding path program 191 times
[2018-10-03 09:19:59,410 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:19:59,410 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:19:59,410 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:59,410 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:19:59,410 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:19:59,411 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:19:59,464 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:59,464 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:19:59,464 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 205 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:19:59,473 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:19:59,480 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:19:59,481 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:19:59,481 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:19:59,525 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:19:59,545 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:19:59,546 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:19:59,546 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:19:59,546 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:19:59,546 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:19:59,546 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:19:59,877 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:19:59,878 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:19:59,878 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:19:59,878 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:19:59,878 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:19:59,879 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:19:59,879 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:19:59,879 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:19:59,879 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:20:00,048 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30.
[2018-10-03 09:20:00,048 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:00,048 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:00,048 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:20:00,048 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:00,048 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:00,048 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:00,048 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:00,048 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:00,049 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:00,049 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:00,049 INFO  L423      AbstractCegarLoop]: === Iteration 206 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:00,049 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:00,049 INFO  L82        PathProgramCache]: Analyzing trace with hash 1008892541, now seen corresponding path program 192 times
[2018-10-03 09:20:00,049 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:00,049 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:00,049 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:00,049 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:00,050 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:00,050 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:00,126 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:00,126 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:00,126 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 206 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:00,135 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:20:00,143 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:20:00,143 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:00,144 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:00,186 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:00,207 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:00,207 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:00,207 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:00,208 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:00,208 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:00,208 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:20:00,553 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:00,554 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:20:00,554 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:00,554 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:00,554 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:00,555 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:20:00,555 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:20:00,555 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:00,555 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:20:00,734 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32.
[2018-10-03 09:20:00,734 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:00,734 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:00,734 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:00,735 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:00,735 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:00,735 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:00,735 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:00,735 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:00,735 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:00,735 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:00,735 INFO  L423      AbstractCegarLoop]: === Iteration 207 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:00,735 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:00,735 INFO  L82        PathProgramCache]: Analyzing trace with hash 1008894463, now seen corresponding path program 193 times
[2018-10-03 09:20:00,735 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:00,735 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:00,736 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:00,736 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:00,736 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:00,737 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:00,792 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:00,792 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:00,792 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 207 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:00,800 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:00,805 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:00,806 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:00,848 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:00,868 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:00,868 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:00,868 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:00,868 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:00,868 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:00,868 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:01,166 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:01,167 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:20:01,167 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:01,167 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:01,167 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:01,168 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:20:01,168 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:20:01,168 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:01,168 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:20:01,296 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 24.
[2018-10-03 09:20:01,297 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:20:01,297 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:20:01,297 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 17
[2018-10-03 09:20:01,297 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:01,297 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:20:01,297 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:01,297 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:20:01,297 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:01,297 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:01,298 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:01,298 INFO  L423      AbstractCegarLoop]: === Iteration 208 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:01,298 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:01,298 INFO  L82        PathProgramCache]: Analyzing trace with hash -746955655, now seen corresponding path program 194 times
[2018-10-03 09:20:01,298 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:01,298 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:01,298 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:01,298 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:01,299 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:01,299 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:01,422 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:01,422 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:01,422 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 208 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:01,428 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:20:01,434 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:20:01,434 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:01,435 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:01,489 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:01,508 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:01,508 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:01,508 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:01,508 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:01,508 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:01,508 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 10 states.
[2018-10-03 09:20:01,915 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:01,916 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:20:01,916 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:01,916 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:01,916 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:01,917 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:20:01,917 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:20:01,917 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:01,917 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:20:02,112 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 32.
[2018-10-03 09:20:02,112 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:02,113 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:02,113 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:02,113 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:02,113 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:02,113 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:02,113 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:02,113 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:02,113 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:02,113 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:02,113 INFO  L423      AbstractCegarLoop]: === Iteration 209 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:02,114 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:02,114 INFO  L82        PathProgramCache]: Analyzing trace with hash -746953733, now seen corresponding path program 195 times
[2018-10-03 09:20:02,114 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:02,114 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:02,114 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:02,114 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:02,114 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:02,115 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:02,180 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:02,180 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:02,181 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 209 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:02,194 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:20:02,203 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:20:02,203 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:02,204 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:02,235 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:02,257 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:02,258 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:02,258 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:02,258 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:02,258 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:02,258 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:02,682 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:02,683 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:20:02,683 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:02,683 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:02,683 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:02,684 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:20:02,684 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:20:02,684 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:02,684 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:20:02,866 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 30.
[2018-10-03 09:20:02,866 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:02,866 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:02,867 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:20:02,867 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:02,867 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:02,867 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:02,867 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:02,867 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:02,867 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:02,867 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:02,867 INFO  L423      AbstractCegarLoop]: === Iteration 210 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:02,867 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:02,867 INFO  L82        PathProgramCache]: Analyzing trace with hash -745108613, now seen corresponding path program 196 times
[2018-10-03 09:20:02,868 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:02,868 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:02,868 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:02,868 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:02,868 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:02,869 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:02,950 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:02,950 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:02,950 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 210 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:02,958 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:20:02,964 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:20:02,964 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:02,965 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:03,010 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:03,031 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:03,031 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:03,031 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:03,031 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:03,031 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:03,032 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:20:03,424 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:03,425 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:20:03,425 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:03,425 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:03,425 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:03,426 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:20:03,426 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:20:03,426 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:03,426 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:20:03,621 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 32.
[2018-10-03 09:20:03,621 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:03,621 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:03,622 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:03,622 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:03,622 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:03,622 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:03,622 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:03,622 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:03,622 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:03,622 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:03,622 INFO  L423      AbstractCegarLoop]: === Iteration 211 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:03,622 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:03,623 INFO  L82        PathProgramCache]: Analyzing trace with hash -745106691, now seen corresponding path program 197 times
[2018-10-03 09:20:03,623 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:03,623 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:03,623 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:03,623 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:03,623 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:03,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:03,685 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:03,685 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:03,685 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 211 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:03,693 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:20:03,708 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:20:03,708 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:03,709 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:03,743 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:03,764 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:03,764 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:03,764 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:03,764 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:03,764 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:03,765 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:04,159 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:04,160 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:20:04,160 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:04,160 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:04,160 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:04,160 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:20:04,160 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:20:04,161 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:04,161 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:20:04,331 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 28.
[2018-10-03 09:20:04,332 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:20:04,332 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:20:04,332 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:20:04,332 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:04,332 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:20:04,332 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:04,332 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:20:04,332 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:04,332 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:04,333 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:04,333 INFO  L423      AbstractCegarLoop]: === Iteration 212 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:04,333 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:04,333 INFO  L82        PathProgramCache]: Analyzing trace with hash 1028051707, now seen corresponding path program 198 times
[2018-10-03 09:20:04,333 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:04,333 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:04,333 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:04,334 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:04,334 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:04,334 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:04,399 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:04,399 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:04,399 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 212 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:04,406 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:20:04,416 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:20:04,417 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:04,418 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:04,447 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:04,469 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:04,469 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:04,469 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:04,469 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:04,469 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:04,469 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:20:04,896 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:04,897 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:20:04,897 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:04,897 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:04,897 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:04,898 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:20:04,898 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:20:04,898 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:04,898 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:20:05,093 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 32.
[2018-10-03 09:20:05,093 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:05,094 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:05,094 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:05,094 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:05,094 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:05,094 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:05,094 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:05,094 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:05,094 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:05,094 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:05,095 INFO  L423      AbstractCegarLoop]: === Iteration 213 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:05,095 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:05,095 INFO  L82        PathProgramCache]: Analyzing trace with hash 1028053629, now seen corresponding path program 199 times
[2018-10-03 09:20:05,095 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:05,095 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:05,095 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:05,095 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:05,095 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:05,096 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:05,151 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:05,151 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:05,151 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 213 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:05,159 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:05,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:05,170 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:05,209 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:05,231 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:05,231 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:05,232 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:05,232 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:05,232 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:05,232 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:05,677 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:05,678 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:20:05,678 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:05,678 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:05,678 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:05,679 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:20:05,679 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:20:05,679 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:05,679 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:20:05,870 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 30.
[2018-10-03 09:20:05,870 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:05,870 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:05,870 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:20:05,870 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:05,870 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:05,870 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:05,870 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:05,871 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:05,871 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:05,871 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:05,871 INFO  L423      AbstractCegarLoop]: === Iteration 214 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:05,871 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:05,871 INFO  L82        PathProgramCache]: Analyzing trace with hash 1029898749, now seen corresponding path program 200 times
[2018-10-03 09:20:05,871 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:05,871 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:05,872 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:05,872 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:05,872 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:05,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:05,941 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:05,941 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:05,942 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 214 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:05,950 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:20:05,957 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:20:05,957 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:05,958 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:05,989 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:06,010 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:06,011 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:06,011 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:06,011 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:06,011 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:06,011 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:20:06,417 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:06,417 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:20:06,417 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:06,417 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:06,417 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:06,418 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:20:06,418 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:20:06,418 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:06,418 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:20:06,618 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 32.
[2018-10-03 09:20:06,618 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:06,618 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:06,619 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:06,619 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:06,619 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:06,619 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:06,619 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:06,619 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:06,619 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:06,619 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:06,619 INFO  L423      AbstractCegarLoop]: === Iteration 215 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:06,619 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:06,620 INFO  L82        PathProgramCache]: Analyzing trace with hash 1029900671, now seen corresponding path program 201 times
[2018-10-03 09:20:06,620 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:06,620 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:06,620 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:06,620 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:06,620 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:06,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:06,745 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:06,745 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:06,745 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 215 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:06,752 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:20:06,759 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:20:06,760 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:06,761 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:06,782 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:06,804 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:06,804 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:06,804 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:06,804 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:06,804 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:06,804 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:07,183 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:07,184 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:20:07,184 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:07,184 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:07,184 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:07,185 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:20:07,185 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:20:07,185 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:07,185 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:20:07,348 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 26.
[2018-10-03 09:20:07,348 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:20:07,348 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:20:07,348 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17
[2018-10-03 09:20:07,348 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:07,348 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:20:07,349 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:07,349 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:20:07,349 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:07,349 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:07,349 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:07,349 INFO  L423      AbstractCegarLoop]: === Iteration 216 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:07,349 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:07,349 INFO  L82        PathProgramCache]: Analyzing trace with hash -66897285, now seen corresponding path program 202 times
[2018-10-03 09:20:07,349 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:07,349 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:07,350 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:07,350 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:07,350 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:07,351 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:07,414 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:07,415 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:07,415 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 216 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:07,423 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:20:07,429 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:20:07,429 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:07,430 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:07,459 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:07,481 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:07,481 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:07,481 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:07,481 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:07,481 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:07,481 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states.
[2018-10-03 09:20:07,873 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:07,874 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:20:07,874 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:07,874 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:07,874 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:07,875 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:20:07,875 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:20:07,875 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:07,875 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:20:08,077 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32.
[2018-10-03 09:20:08,077 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:08,077 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:08,077 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:08,077 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:08,077 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:08,078 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:08,078 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:08,078 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:08,078 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:08,078 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:08,078 INFO  L423      AbstractCegarLoop]: === Iteration 217 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:08,078 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:08,078 INFO  L82        PathProgramCache]: Analyzing trace with hash -66895363, now seen corresponding path program 203 times
[2018-10-03 09:20:08,078 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:08,078 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:08,079 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:08,079 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:08,079 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:08,080 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:08,147 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:08,147 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:08,147 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 217 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:08,155 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:20:08,163 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:20:08,163 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:08,164 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:08,210 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:08,230 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:08,230 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:08,231 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:08,231 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:08,231 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:08,231 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:08,603 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:08,604 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:20:08,604 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:08,604 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:08,604 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:08,605 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:20:08,605 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:20:08,605 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:08,605 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:20:08,791 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30.
[2018-10-03 09:20:08,791 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:08,792 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:08,792 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:20:08,792 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:08,792 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:08,792 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:08,792 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:08,792 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:08,792 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:08,792 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:08,793 INFO  L423      AbstractCegarLoop]: === Iteration 218 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:08,793 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:08,793 INFO  L82        PathProgramCache]: Analyzing trace with hash -65050243, now seen corresponding path program 204 times
[2018-10-03 09:20:08,793 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:08,793 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:08,793 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:08,794 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:08,794 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:08,795 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:08,879 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:08,880 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:08,880 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 218 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:08,888 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:20:08,896 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:20:08,896 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:08,897 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:08,919 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:08,940 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:08,940 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:08,940 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:08,941 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:08,941 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:08,941 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:20:09,343 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:09,344 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:20:09,344 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:09,344 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:09,344 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:09,345 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:20:09,345 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:20:09,345 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:09,345 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:20:09,542 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32.
[2018-10-03 09:20:09,542 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:09,542 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:09,542 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:09,542 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:09,543 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:09,543 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:09,543 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:09,543 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:09,543 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:09,543 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:09,543 INFO  L423      AbstractCegarLoop]: === Iteration 219 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:09,543 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:09,543 INFO  L82        PathProgramCache]: Analyzing trace with hash -65048321, now seen corresponding path program 205 times
[2018-10-03 09:20:09,543 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:09,543 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:09,544 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:09,544 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:09,544 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:09,545 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:09,612 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:09,612 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:09,612 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 219 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:09,620 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:09,625 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:09,626 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:09,657 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:09,678 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:09,679 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:09,679 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:09,679 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:09,679 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:09,679 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:10,066 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:10,067 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:20:10,067 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:10,067 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:10,067 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:10,068 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:20:10,068 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:20:10,068 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:10,068 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:20:10,250 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 28.
[2018-10-03 09:20:10,250 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:20:10,251 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:20:10,251 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:20:10,251 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:10,251 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:20:10,251 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:10,251 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:20:10,251 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:10,251 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:10,252 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:10,252 INFO  L423      AbstractCegarLoop]: === Iteration 220 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:10,252 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:10,252 INFO  L82        PathProgramCache]: Analyzing trace with hash 1708110077, now seen corresponding path program 206 times
[2018-10-03 09:20:10,252 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:10,252 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:10,253 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:10,253 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:10,253 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:10,253 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:10,315 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:10,315 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:10,315 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 220 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:10,322 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:20:10,331 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:20:10,331 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:10,332 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:10,371 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:10,393 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:10,393 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:10,393 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:10,394 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:10,394 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:10,394 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:20:10,747 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:10,748 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:20:10,748 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:10,748 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:10,748 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:10,748 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:20:10,748 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:20:10,748 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:10,749 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:20:10,951 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32.
[2018-10-03 09:20:10,951 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:10,951 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:10,951 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:10,951 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:10,952 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:10,952 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:10,952 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:10,952 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:10,952 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:10,952 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:10,952 INFO  L423      AbstractCegarLoop]: === Iteration 221 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:10,952 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:10,953 INFO  L82        PathProgramCache]: Analyzing trace with hash 1708111999, now seen corresponding path program 207 times
[2018-10-03 09:20:10,953 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:10,953 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:10,953 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:10,953 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:10,953 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:10,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:11,169 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:11,169 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:11,169 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 221 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:11,176 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:20:11,185 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:20:11,185 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:11,186 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:11,207 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:11,228 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:11,229 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:11,229 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:11,229 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:11,229 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:11,229 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:11,597 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:11,598 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:20:11,598 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:11,598 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:11,598 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:11,598 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:20:11,598 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:20:11,598 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 8
[2018-10-03 09:20:11,599 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:20:11,783 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30.
[2018-10-03 09:20:11,784 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:11,784 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:11,784 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:20:11,784 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:11,784 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:11,784 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:11,784 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:11,784 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:11,784 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:11,785 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:11,785 INFO  L423      AbstractCegarLoop]: === Iteration 222 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:11,785 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:11,785 INFO  L82        PathProgramCache]: Analyzing trace with hash 1709957119, now seen corresponding path program 208 times
[2018-10-03 09:20:11,785 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:11,785 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:11,785 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:11,786 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:11,786 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:11,787 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:11,872 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:11,872 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:11,872 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 222 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:11,879 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:20:11,885 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:20:11,886 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:11,886 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:11,952 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:11,973 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:11,973 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:11,974 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:11,974 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:11,974 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:11,974 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:20:12,321 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:12,322 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:20:12,322 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:12,322 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:12,322 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:12,323 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:20:12,323 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:20:12,323 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:12,323 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:20:12,507 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32.
[2018-10-03 09:20:12,507 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:12,507 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:12,507 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:12,508 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:12,508 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:12,508 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:12,508 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:12,508 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:12,508 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:12,508 INFO  L375         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1]
[2018-10-03 09:20:12,508 INFO  L423      AbstractCegarLoop]: === Iteration 223 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:12,508 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:12,508 INFO  L82        PathProgramCache]: Analyzing trace with hash 1709959041, now seen corresponding path program 209 times
[2018-10-03 09:20:12,508 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:12,509 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:12,509 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:12,509 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:12,509 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:12,510 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:12,575 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:12,575 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:12,575 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 223 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:12,582 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:20:12,591 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:20:12,592 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:12,592 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:12,633 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:12,654 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:12,654 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:12,654 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:12,655 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:12,655 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:12,655 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:12,990 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:12,990 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:20:12,990 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:12,990 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:12,990 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:12,991 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:20:12,991 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:20:12,991 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:12,991 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:20:13,109 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 22.
[2018-10-03 09:20:13,110 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:20:13,110 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:20:13,110 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 17
[2018-10-03 09:20:13,110 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:13,110 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:20:13,110 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:13,110 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:20:13,110 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:13,110 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:13,110 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:13,111 INFO  L423      AbstractCegarLoop]: === Iteration 224 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:13,111 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:13,111 INFO  L82        PathProgramCache]: Analyzing trace with hash -2034826247, now seen corresponding path program 210 times
[2018-10-03 09:20:13,111 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:13,111 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:13,111 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:13,111 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:13,111 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:13,112 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:13,170 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:13,170 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:13,170 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 224 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:13,178 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:20:13,186 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:20:13,186 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:13,187 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:13,230 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:13,251 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:13,251 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:13,251 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:13,252 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:13,252 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:13,252 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 10 states.
[2018-10-03 09:20:13,651 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:13,652 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:20:13,652 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:13,652 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:13,652 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:13,653 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:20:13,653 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:20:13,654 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:13,654 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:20:13,868 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32.
[2018-10-03 09:20:13,869 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:13,869 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:13,869 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:13,869 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:13,869 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:13,869 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:13,869 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:13,869 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:13,869 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:13,870 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:13,870 INFO  L423      AbstractCegarLoop]: === Iteration 225 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:13,870 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:13,870 INFO  L82        PathProgramCache]: Analyzing trace with hash -2034824325, now seen corresponding path program 211 times
[2018-10-03 09:20:13,870 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:13,870 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:13,871 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:13,871 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:13,871 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:13,872 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:13,932 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:13,932 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:13,932 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 225 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:13,939 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:13,944 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:13,945 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:13,982 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:14,002 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:14,003 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:14,003 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:14,003 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:14,003 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:14,003 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:14,401 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:14,402 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:20:14,402 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:14,402 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:14,402 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:14,403 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:20:14,403 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:20:14,403 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:14,403 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:20:14,609 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30.
[2018-10-03 09:20:14,609 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:14,609 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:14,609 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:20:14,609 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:14,609 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:14,609 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:14,609 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:14,610 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:14,610 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:14,610 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:14,610 INFO  L423      AbstractCegarLoop]: === Iteration 226 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:14,610 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:14,610 INFO  L82        PathProgramCache]: Analyzing trace with hash -2032979205, now seen corresponding path program 212 times
[2018-10-03 09:20:14,610 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:14,610 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:14,611 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:14,611 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:14,611 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:14,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:14,678 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:14,678 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:14,678 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 226 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:14,687 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:20:14,692 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:20:14,692 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:14,693 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:14,734 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:14,756 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:14,756 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:14,756 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:14,756 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:14,757 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:14,757 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:20:15,171 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:15,172 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:20:15,172 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:15,172 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:15,172 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:15,173 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:20:15,173 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:20:15,173 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:15,173 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:20:15,390 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32.
[2018-10-03 09:20:15,390 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:15,391 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:15,391 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:15,391 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:15,391 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:15,391 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:15,391 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:15,391 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:15,391 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:15,391 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:15,391 INFO  L423      AbstractCegarLoop]: === Iteration 227 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:15,391 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:15,392 INFO  L82        PathProgramCache]: Analyzing trace with hash -2032977283, now seen corresponding path program 213 times
[2018-10-03 09:20:15,392 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:15,392 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:15,392 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:15,392 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:15,392 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:15,393 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:15,467 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:15,468 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:15,468 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 227 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:15,476 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:20:15,485 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:20:15,485 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:15,486 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:15,525 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:15,546 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:15,546 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:15,546 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:15,546 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:15,547 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:15,547 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:15,930 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:15,930 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:20:15,931 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:15,931 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:15,931 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:15,932 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:20:15,932 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:20:15,932 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:15,932 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:20:16,114 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 28.
[2018-10-03 09:20:16,114 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:20:16,114 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:20:16,114 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:20:16,114 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:16,114 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:20:16,114 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:16,115 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:20:16,115 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:16,115 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:16,115 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:16,115 INFO  L423      AbstractCegarLoop]: === Iteration 228 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:16,115 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:16,115 INFO  L82        PathProgramCache]: Analyzing trace with hash -259818885, now seen corresponding path program 214 times
[2018-10-03 09:20:16,116 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:16,116 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:16,116 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:16,116 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:16,116 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:16,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:16,172 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:16,172 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:16,172 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 228 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:16,182 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:20:16,188 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:20:16,189 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:16,190 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:16,384 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:16,405 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:16,405 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:16,405 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:16,405 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:16,405 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:16,405 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:20:16,778 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:16,779 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:20:16,779 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:16,779 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:16,779 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:16,780 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:20:16,780 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:20:16,780 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 8
[2018-10-03 09:20:16,780 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:20:16,990 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32.
[2018-10-03 09:20:16,990 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:16,990 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:16,990 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:16,990 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:16,990 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:16,990 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:16,990 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:16,991 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:16,991 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:16,991 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:16,991 INFO  L423      AbstractCegarLoop]: === Iteration 229 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:16,991 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:16,991 INFO  L82        PathProgramCache]: Analyzing trace with hash -259816963, now seen corresponding path program 215 times
[2018-10-03 09:20:16,991 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:16,991 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:16,992 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:16,992 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:16,992 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:16,992 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:17,084 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:17,084 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:17,084 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 229 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:17,092 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:20:17,100 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:20:17,101 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:17,102 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:17,139 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:17,159 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:17,159 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:17,160 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:17,160 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:17,160 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:17,160 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:17,547 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:17,548 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:20:17,548 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:17,548 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:17,548 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:17,549 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:20:17,549 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:20:17,549 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:17,550 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:20:17,746 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30.
[2018-10-03 09:20:17,746 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:17,746 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:17,747 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:20:17,747 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:17,747 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:17,747 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:17,747 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:17,747 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:17,747 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:17,747 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:17,747 INFO  L423      AbstractCegarLoop]: === Iteration 230 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:17,747 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:17,747 INFO  L82        PathProgramCache]: Analyzing trace with hash -257971843, now seen corresponding path program 216 times
[2018-10-03 09:20:17,748 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:17,748 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:17,748 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:17,748 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:17,748 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:17,749 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:17,806 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:17,806 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:17,806 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 230 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:17,814 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:20:17,823 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:20:17,823 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:17,824 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:17,857 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:17,877 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:17,877 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:17,877 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:17,877 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:17,877 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:17,877 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:20:18,236 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:18,237 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:20:18,237 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:18,237 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:18,237 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:18,238 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:20:18,238 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:20:18,238 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:18,238 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:20:18,457 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32.
[2018-10-03 09:20:18,457 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:18,457 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:18,457 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:18,457 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:18,457 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:18,457 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:18,457 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:18,457 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:18,457 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:18,458 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:18,458 INFO  L423      AbstractCegarLoop]: === Iteration 231 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:18,458 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:18,458 INFO  L82        PathProgramCache]: Analyzing trace with hash -257969921, now seen corresponding path program 217 times
[2018-10-03 09:20:18,458 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:18,458 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:18,458 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:18,458 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:18,459 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:18,459 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:18,528 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:18,529 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:18,529 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 231 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:18,538 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:18,543 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:18,544 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:18,581 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:18,602 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:18,602 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:18,602 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:18,603 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:18,603 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:18,603 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:18,936 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:18,936 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:20:18,936 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:18,936 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:18,936 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:18,937 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:20:18,937 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:20:18,937 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:18,937 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:20:19,115 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 26.
[2018-10-03 09:20:19,115 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:20:19,115 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:20:19,115 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17
[2018-10-03 09:20:19,115 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:19,115 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:20:19,115 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:19,116 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:20:19,116 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:19,116 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:19,116 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:19,116 INFO  L423      AbstractCegarLoop]: === Iteration 232 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:19,116 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:19,116 INFO  L82        PathProgramCache]: Analyzing trace with hash -1354767877, now seen corresponding path program 218 times
[2018-10-03 09:20:19,116 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:19,116 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:19,117 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:19,117 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:19,117 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:19,117 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:19,174 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:19,175 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:19,175 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 232 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:19,183 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:20:19,187 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:20:19,188 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:19,189 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:19,218 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:19,240 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:19,240 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:19,240 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:19,240 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:19,240 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:19,240 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states.
[2018-10-03 09:20:19,715 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:19,716 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:20:19,716 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:19,716 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:19,716 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:19,716 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:20:19,717 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:20:19,717 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:19,717 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:20:19,951 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32.
[2018-10-03 09:20:19,951 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:19,951 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:19,951 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:19,951 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:19,951 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:19,951 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:19,951 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:19,952 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:19,952 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:19,952 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:19,952 INFO  L423      AbstractCegarLoop]: === Iteration 233 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:19,952 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:19,952 INFO  L82        PathProgramCache]: Analyzing trace with hash -1354765955, now seen corresponding path program 219 times
[2018-10-03 09:20:19,952 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:19,953 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:19,953 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:19,953 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:19,953 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:19,954 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:20,020 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:20,020 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:20,020 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 233 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:20,027 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:20:20,037 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:20:20,038 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:20,039 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:20,514 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:20,551 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:20,552 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:20,552 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:20,552 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:20,552 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:20,552 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:21,552 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:21,552 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:20:21,552 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:21,553 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:21,553 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:21,553 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:20:21,553 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:20:21,553 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s Time 0.0s impTime 8
[2018-10-03 09:20:21,553 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:20:21,776 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 30.
[2018-10-03 09:20:21,776 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:21,776 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:21,776 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:20:21,776 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:21,776 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:21,776 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:21,776 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:21,777 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:21,777 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:21,777 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:21,777 INFO  L423      AbstractCegarLoop]: === Iteration 234 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:21,777 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:21,777 INFO  L82        PathProgramCache]: Analyzing trace with hash -1352920835, now seen corresponding path program 220 times
[2018-10-03 09:20:21,777 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:21,777 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:21,778 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:21,778 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:21,778 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:21,778 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:21,920 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:21,920 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:21,920 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 234 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:21,928 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:20:21,935 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:20:21,935 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:21,936 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:21,985 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:22,004 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:22,004 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:22,004 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:22,005 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:22,005 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:22,005 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:20:22,428 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:22,429 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:20:22,429 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:22,429 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:22,429 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:22,430 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:20:22,430 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:20:22,430 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime 8
[2018-10-03 09:20:22,430 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:20:22,648 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32.
[2018-10-03 09:20:22,649 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:22,649 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:22,649 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:22,649 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:22,649 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:22,649 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:22,649 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:22,649 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:22,649 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:22,650 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:22,650 INFO  L423      AbstractCegarLoop]: === Iteration 235 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:22,650 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:22,650 INFO  L82        PathProgramCache]: Analyzing trace with hash -1352918913, now seen corresponding path program 221 times
[2018-10-03 09:20:22,650 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:22,650 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:22,650 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:22,651 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:22,651 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:22,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:22,719 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:22,720 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:22,720 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 235 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:22,728 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:20:22,737 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:20:22,737 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:22,738 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:22,789 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:22,811 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:22,811 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:22,811 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:22,811 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:22,811 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:22,811 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:23,214 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:23,215 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:20:23,215 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:23,215 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:23,215 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:23,216 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:20:23,216 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:20:23,216 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:23,216 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:20:23,408 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 28.
[2018-10-03 09:20:23,408 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:20:23,408 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:20:23,408 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:20:23,408 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:23,408 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:20:23,408 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:23,409 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:20:23,409 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:23,409 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:23,409 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:23,409 INFO  L423      AbstractCegarLoop]: === Iteration 236 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:23,409 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:23,409 INFO  L82        PathProgramCache]: Analyzing trace with hash 420239485, now seen corresponding path program 222 times
[2018-10-03 09:20:23,409 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:23,409 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:23,410 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:23,410 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:23,410 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:23,410 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:23,478 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:23,478 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:23,478 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 236 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:23,486 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:20:23,495 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:20:23,495 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:23,496 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:23,533 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:23,553 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:23,553 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:23,554 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:23,554 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:23,554 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:23,554 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:20:23,936 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:23,937 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:20:23,937 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:23,937 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:23,937 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:23,938 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:20:23,938 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:20:23,938 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:23,938 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:20:24,146 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32.
[2018-10-03 09:20:24,146 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:24,146 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:24,146 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:24,146 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:24,147 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:24,147 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:24,147 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:24,147 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:24,147 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:24,147 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:24,147 INFO  L423      AbstractCegarLoop]: === Iteration 237 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:24,147 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:24,148 INFO  L82        PathProgramCache]: Analyzing trace with hash 420241407, now seen corresponding path program 223 times
[2018-10-03 09:20:24,148 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:24,148 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:24,148 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:24,148 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:24,148 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:24,149 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:24,314 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:24,314 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:24,315 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 237 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:24,323 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:24,328 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:24,328 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:24,359 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:24,380 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:24,381 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:24,381 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:24,381 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:24,381 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:24,381 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:24,766 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:24,767 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:20:24,767 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:24,767 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:24,767 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:24,768 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:20:24,768 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:20:24,768 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime 8
[2018-10-03 09:20:24,768 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:20:24,974 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 30.
[2018-10-03 09:20:24,975 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:24,975 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:24,975 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:20:24,975 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:24,975 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:24,975 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:24,975 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:24,975 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:24,976 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:24,976 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:24,976 INFO  L423      AbstractCegarLoop]: === Iteration 238 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:24,976 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:24,976 INFO  L82        PathProgramCache]: Analyzing trace with hash 422086527, now seen corresponding path program 224 times
[2018-10-03 09:20:24,976 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:24,976 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:24,976 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:24,977 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:24,977 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:24,977 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:25,049 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:25,049 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:25,049 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 238 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:25,057 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:20:25,063 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:20:25,063 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:25,064 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:25,092 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:25,114 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:25,114 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:25,114 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:25,114 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:25,114 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:25,114 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:20:25,487 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:25,488 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:20:25,488 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:25,488 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:25,488 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:25,489 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:20:25,489 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:20:25,489 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:25,489 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:20:25,695 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32.
[2018-10-03 09:20:25,695 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:25,695 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:25,695 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:25,695 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:25,696 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:25,696 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:25,696 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:25,696 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:25,696 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:25,696 INFO  L375         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1]
[2018-10-03 09:20:25,696 INFO  L423      AbstractCegarLoop]: === Iteration 239 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:25,696 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:25,696 INFO  L82        PathProgramCache]: Analyzing trace with hash 422088449, now seen corresponding path program 225 times
[2018-10-03 09:20:25,696 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:25,696 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:25,697 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:25,697 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:25,697 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:25,698 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:25,755 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:25,755 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:25,755 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 239 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:25,762 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:20:25,771 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:20:25,772 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:25,772 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:25,813 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:25,832 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:25,833 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:25,833 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:25,833 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:25,833 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:25,833 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:26,158 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:26,159 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:20:26,159 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:26,159 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:26,159 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:26,160 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:20:26,160 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:20:26,160 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:26,160 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:20:26,316 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 24.
[2018-10-03 09:20:26,316 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:20:26,316 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:20:26,317 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 17
[2018-10-03 09:20:26,317 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:26,317 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:20:26,317 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:26,317 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:20:26,317 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:26,317 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:26,317 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:26,317 INFO  L423      AbstractCegarLoop]: === Iteration 240 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:26,317 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:26,317 INFO  L82        PathProgramCache]: Analyzing trace with hash -1333761669, now seen corresponding path program 226 times
[2018-10-03 09:20:26,317 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:26,318 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:26,318 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:26,318 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:26,318 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:26,319 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:27,420 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:27,421 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:27,421 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
[2018-10-03 09:20:27,434 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
Waiting until toolchain timeout for monitored process 240 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:27,460 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:20:27,460 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:27,461 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:27,494 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:27,515 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:27,515 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:27,515 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:27,516 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:27,516 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:27,516 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 10 states.
[2018-10-03 09:20:27,881 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:27,882 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:20:27,882 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:27,882 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:27,882 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:27,883 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:20:27,883 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:20:27,883 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.8s impTime 8
[2018-10-03 09:20:27,883 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:20:28,119 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32.
[2018-10-03 09:20:28,119 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:28,119 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:28,119 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:28,119 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:28,120 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:28,120 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:28,120 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:28,120 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:28,120 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:28,120 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:28,120 INFO  L423      AbstractCegarLoop]: === Iteration 241 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:28,120 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:28,120 INFO  L82        PathProgramCache]: Analyzing trace with hash -1333759747, now seen corresponding path program 227 times
[2018-10-03 09:20:28,120 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:28,121 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:28,121 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:28,121 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:28,121 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:28,122 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:28,188 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:28,189 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:28,189 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 241 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:28,198 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:20:28,207 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:20:28,208 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:28,209 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:28,235 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:28,255 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:28,255 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:28,255 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:28,256 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:28,256 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:28,256 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:28,641 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:28,642 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:20:28,642 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:28,642 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:28,642 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:28,642 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:20:28,642 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:20:28,642 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:28,643 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:20:28,857 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30.
[2018-10-03 09:20:28,858 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:28,858 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:28,858 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:20:28,858 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:28,858 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:28,858 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:28,858 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:28,858 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:28,858 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:28,858 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:28,859 INFO  L423      AbstractCegarLoop]: === Iteration 242 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:28,859 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:28,859 INFO  L82        PathProgramCache]: Analyzing trace with hash -1331914627, now seen corresponding path program 228 times
[2018-10-03 09:20:28,859 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:28,859 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:28,859 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:28,859 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:28,859 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:28,860 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:28,912 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:28,912 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:28,912 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 242 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:28,920 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:20:28,928 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:20:28,928 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:28,929 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:28,965 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:28,985 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:28,986 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:28,986 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:28,986 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:28,986 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:28,986 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:20:29,341 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:29,342 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:20:29,342 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:29,342 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:29,342 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:29,343 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:20:29,343 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:20:29,343 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:29,343 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:20:29,574 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32.
[2018-10-03 09:20:29,575 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:29,575 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:29,575 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:29,575 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:29,575 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:29,575 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:29,575 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:29,575 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:29,575 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:29,575 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:29,576 INFO  L423      AbstractCegarLoop]: === Iteration 243 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:29,576 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:29,576 INFO  L82        PathProgramCache]: Analyzing trace with hash -1331912705, now seen corresponding path program 229 times
[2018-10-03 09:20:29,576 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:29,576 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:29,576 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:29,576 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:29,576 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:29,577 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:29,638 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:29,638 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:29,638 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 243 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:29,645 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:29,650 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:29,651 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:29,692 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:29,712 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:29,712 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:29,713 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:29,713 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:29,713 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:29,713 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:30,078 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:30,078 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:20:30,078 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:30,078 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:30,078 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:30,079 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:20:30,079 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:20:30,079 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:30,079 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:20:30,283 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 28.
[2018-10-03 09:20:30,283 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:20:30,284 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:20:30,284 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:20:30,284 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:30,284 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:20:30,284 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:30,284 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:20:30,284 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:30,284 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:30,284 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:30,284 INFO  L423      AbstractCegarLoop]: === Iteration 244 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:30,285 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:30,285 INFO  L82        PathProgramCache]: Analyzing trace with hash 441245693, now seen corresponding path program 230 times
[2018-10-03 09:20:30,285 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:30,285 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:30,285 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:30,285 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:30,285 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:30,286 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:30,354 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:30,354 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:30,354 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 244 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:30,363 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:20:30,368 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:20:30,369 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:30,369 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:30,412 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:30,432 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:30,432 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:30,432 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:30,433 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:30,433 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:30,433 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:20:30,799 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:30,800 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:20:30,800 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:30,800 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:30,800 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:30,800 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:20:30,800 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:20:30,800 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:30,801 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:20:31,029 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32.
[2018-10-03 09:20:31,029 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:31,030 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:31,030 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:31,030 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:31,030 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:31,030 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:31,030 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:31,030 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:31,030 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:31,030 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:31,030 INFO  L423      AbstractCegarLoop]: === Iteration 245 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:31,031 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:31,031 INFO  L82        PathProgramCache]: Analyzing trace with hash 441247615, now seen corresponding path program 231 times
[2018-10-03 09:20:31,031 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:31,031 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:31,031 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:31,031 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:31,031 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:31,032 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:31,098 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:31,098 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:31,098 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 245 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:31,108 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:20:31,117 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:20:31,117 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:31,118 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:31,309 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:31,328 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:31,329 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:31,329 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:31,329 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:31,329 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:31,329 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:31,704 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:31,705 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:20:31,705 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:31,705 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:31,705 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:31,706 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:20:31,706 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:20:31,706 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.0s impTime 8
[2018-10-03 09:20:31,706 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:20:31,929 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 30.
[2018-10-03 09:20:31,929 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:31,929 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:31,929 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:20:31,929 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:31,930 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:31,930 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:31,930 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:31,930 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:31,930 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:31,930 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:31,930 INFO  L423      AbstractCegarLoop]: === Iteration 246 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:31,930 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:31,930 INFO  L82        PathProgramCache]: Analyzing trace with hash 443092735, now seen corresponding path program 232 times
[2018-10-03 09:20:31,930 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:31,930 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:31,931 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:31,931 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:31,931 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:31,932 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:32,018 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:32,018 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:32,018 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 246 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:32,029 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:20:32,034 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:20:32,035 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:32,035 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:32,086 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:32,105 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:32,105 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:32,105 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:32,106 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:32,106 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:32,106 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:20:32,461 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:32,462 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:20:32,462 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:32,462 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:32,462 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:32,463 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:20:32,463 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:20:32,463 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:32,463 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:20:32,699 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32.
[2018-10-03 09:20:32,699 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:32,699 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:32,700 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:32,700 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:32,700 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:32,700 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:32,700 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:32,700 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:32,700 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:32,700 INFO  L375         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1]
[2018-10-03 09:20:32,700 INFO  L423      AbstractCegarLoop]: === Iteration 247 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:32,700 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:32,701 INFO  L82        PathProgramCache]: Analyzing trace with hash 443094657, now seen corresponding path program 233 times
[2018-10-03 09:20:32,701 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:32,701 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:32,701 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:32,701 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:32,701 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:32,702 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:32,767 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:32,767 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:32,767 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 247 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:32,775 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:20:32,785 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:20:32,785 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:32,786 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:32,829 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:32,850 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:32,850 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:32,850 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:32,850 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:32,850 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:32,850 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:33,192 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:33,192 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:20:33,192 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:33,192 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:33,192 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:33,193 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:20:33,193 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:20:33,193 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:33,193 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:20:33,374 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 26.
[2018-10-03 09:20:33,374 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:20:33,374 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:20:33,374 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 17
[2018-10-03 09:20:33,374 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:33,374 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:20:33,374 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:33,374 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:20:33,375 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:33,375 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:33,375 INFO  L375         BasicCegarLoop]: trace histogram [7, 4, 3, 1, 1, 1]
[2018-10-03 09:20:33,375 INFO  L423      AbstractCegarLoop]: === Iteration 248 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:33,375 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:33,375 INFO  L82        PathProgramCache]: Analyzing trace with hash -653703299, now seen corresponding path program 234 times
[2018-10-03 09:20:33,375 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:33,375 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:33,376 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:33,376 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:33,376 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:33,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:33,432 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:33,432 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:33,432 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 248 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:33,441 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:20:33,453 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:20:33,453 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:33,454 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:33,495 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:33,517 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:33,517 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:33,517 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:33,517 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:33,517 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:33,518 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 10 states.
[2018-10-03 09:20:33,851 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:33,852 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:20:33,852 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:33,852 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:33,852 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:33,853 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:20:33,853 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:20:33,853 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:33,853 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:20:34,076 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32.
[2018-10-03 09:20:34,076 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:34,076 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:34,076 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:34,076 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:34,076 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:34,076 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:34,076 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:34,077 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:34,077 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:34,077 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:34,077 INFO  L423      AbstractCegarLoop]: === Iteration 249 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:34,077 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:34,077 INFO  L82        PathProgramCache]: Analyzing trace with hash -653701377, now seen corresponding path program 235 times
[2018-10-03 09:20:34,077 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:34,077 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:34,078 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:34,078 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:34,078 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:34,078 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:34,134 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:34,134 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:34,134 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 249 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:34,143 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:34,149 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:34,151 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:34,182 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:34,204 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:34,204 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:34,205 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:34,205 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:34,205 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:34,205 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:34,542 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:34,543 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:20:34,543 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:34,543 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:34,543 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:34,543 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:20:34,543 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:20:34,543 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:34,544 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:20:34,765 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 30.
[2018-10-03 09:20:34,765 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:34,765 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:34,765 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:20:34,765 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:34,765 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:34,765 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:34,766 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:34,766 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:34,766 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:34,766 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:34,766 INFO  L423      AbstractCegarLoop]: === Iteration 250 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:34,766 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:34,766 INFO  L82        PathProgramCache]: Analyzing trace with hash -651856257, now seen corresponding path program 236 times
[2018-10-03 09:20:34,766 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:34,766 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:34,767 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:34,767 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:34,767 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:34,767 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:34,845 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:34,846 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:34,846 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 250 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:34,854 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:20:34,859 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:20:34,860 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:34,860 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:34,897 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:34,919 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:34,920 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:34,920 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:34,920 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:34,920 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:34,920 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:20:35,262 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:35,263 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:20:35,263 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:35,263 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:35,263 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:35,264 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:20:35,264 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:20:35,264 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:35,264 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:20:35,488 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32.
[2018-10-03 09:20:35,488 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:35,488 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:35,488 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:35,488 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:35,489 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:35,489 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:35,489 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:35,489 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:35,489 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:35,489 INFO  L375         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1]
[2018-10-03 09:20:35,489 INFO  L423      AbstractCegarLoop]: === Iteration 251 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:35,489 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:35,489 INFO  L82        PathProgramCache]: Analyzing trace with hash -651854335, now seen corresponding path program 237 times
[2018-10-03 09:20:35,489 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:35,489 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:35,490 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:35,490 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:35,490 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:35,491 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:35,556 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:35,556 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:35,556 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 251 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:35,565 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:20:35,572 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s)
[2018-10-03 09:20:35,572 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:35,573 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:35,618 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:35,639 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:35,639 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:35,639 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:35,639 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:35,639 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:35,639 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:35,967 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:35,967 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:20:35,967 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:35,967 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:35,968 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:35,968 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:20:35,968 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:20:35,968 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:35,968 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:20:36,194 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 28.
[2018-10-03 09:20:36,194 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:20:36,195 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:20:36,195 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 17
[2018-10-03 09:20:36,195 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:36,195 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:20:36,195 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:36,195 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:20:36,195 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:36,195 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:36,195 INFO  L375         BasicCegarLoop]: trace histogram [7, 5, 2, 1, 1, 1]
[2018-10-03 09:20:36,196 INFO  L423      AbstractCegarLoop]: === Iteration 252 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:36,196 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:36,196 INFO  L82        PathProgramCache]: Analyzing trace with hash 1121304063, now seen corresponding path program 238 times
[2018-10-03 09:20:36,196 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:36,196 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:36,196 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:36,196 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:36,196 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:36,197 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:36,254 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:36,254 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:36,254 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 252 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:36,263 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:20:36,269 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:20:36,270 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:36,271 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:36,304 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:36,323 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:36,324 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:36,324 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:36,324 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:36,324 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:36,324 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 10 states.
[2018-10-03 09:20:36,634 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:36,634 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:20:36,634 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:36,634 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:36,634 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:36,635 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:20:36,635 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:20:36,635 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:36,635 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:20:36,862 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32.
[2018-10-03 09:20:36,863 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:36,863 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:36,863 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:36,863 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:36,863 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:36,863 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:36,863 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:36,863 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:36,863 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:36,863 INFO  L375         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1]
[2018-10-03 09:20:36,864 INFO  L423      AbstractCegarLoop]: === Iteration 253 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:36,864 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:36,864 INFO  L82        PathProgramCache]: Analyzing trace with hash 1121305985, now seen corresponding path program 239 times
[2018-10-03 09:20:36,864 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:36,864 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:36,865 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:36,865 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:36,865 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:36,866 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:36,933 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:36,933 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:36,933 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 253 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:36,941 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:20:36,950 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 8 check-sat command(s)
[2018-10-03 09:20:36,951 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:36,952 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:36,992 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:37,014 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:37,014 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:37,015 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:37,015 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:37,015 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:37,015 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:37,312 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:37,313 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:20:37,313 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:37,313 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:37,313 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:37,313 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:20:37,313 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:20:37,314 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:37,314 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:20:37,551 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 30.
[2018-10-03 09:20:37,551 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:37,551 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:37,551 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 17
[2018-10-03 09:20:37,551 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:37,551 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:37,552 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:37,552 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:37,552 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:37,552 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:37,552 INFO  L375         BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1]
[2018-10-03 09:20:37,552 INFO  L423      AbstractCegarLoop]: === Iteration 254 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:37,552 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:37,552 INFO  L82        PathProgramCache]: Analyzing trace with hash 1123151105, now seen corresponding path program 240 times
[2018-10-03 09:20:37,552 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:37,552 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:37,553 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:37,553 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:37,553 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:37,554 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:37,615 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:37,616 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:37,616 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 254 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:37,625 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:20:37,634 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-10-03 09:20:37,634 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:37,635 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:37,674 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:37,695 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:37,695 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:37,695 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:37,695 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:37,695 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:37,695 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 10 states.
[2018-10-03 09:20:38,005 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:38,005 INFO  L93              Difference]: Finished difference Result 37 states and 52 transitions.
[2018-10-03 09:20:38,005 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:38,005 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:38,005 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:38,006 INFO  L225             Difference]: With dead ends: 37
[2018-10-03 09:20:38,006 INFO  L226             Difference]: Without dead ends: 35
[2018-10-03 09:20:38,006 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 8
[2018-10-03 09:20:38,006 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-10-03 09:20:38,245 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 32.
[2018-10-03 09:20:38,245 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:38,246 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:38,246 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 17
[2018-10-03 09:20:38,246 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:38,246 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:38,246 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:38,246 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:38,246 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-10-03 09:20:38,246 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:38,246 INFO  L375         BasicCegarLoop]: trace histogram [7, 7, 1, 1, 1]
[2018-10-03 09:20:38,247 INFO  L423      AbstractCegarLoop]: === Iteration 255 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:38,247 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:38,247 INFO  L82        PathProgramCache]: Analyzing trace with hash 1123153027, now seen corresponding path program 7 times
[2018-10-03 09:20:38,247 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:38,247 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:38,248 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:38,248 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:38,248 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:38,249 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:38,316 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:38,316 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:38,316 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 255 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:38,326 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:38,332 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:38,332 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:38,378 INFO  L134       CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:38,400 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:38,400 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9
[2018-10-03 09:20:38,400 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-10-03 09:20:38,400 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-10-03 09:20:38,400 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:38,401 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 10 states.
[2018-10-03 09:20:38,669 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:38,670 INFO  L93              Difference]: Finished difference Result 36 states and 51 transitions.
[2018-10-03 09:20:38,670 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2018-10-03 09:20:38,670 INFO  L78                 Accepts]: Start accepts. Automaton has 10 states. Word has length 17
[2018-10-03 09:20:38,670 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:38,671 INFO  L225             Difference]: With dead ends: 36
[2018-10-03 09:20:38,671 INFO  L226             Difference]: Without dead ends: 34
[2018-10-03 09:20:38,671 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 8
[2018-10-03 09:20:38,671 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2018-10-03 09:20:38,807 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 20.
[2018-10-03 09:20:38,807 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-10-03 09:20:38,808 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 28 transitions.
[2018-10-03 09:20:38,808 INFO  L78                 Accepts]: Start accepts. Automaton has 20 states and 28 transitions. Word has length 17
[2018-10-03 09:20:38,808 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:38,808 INFO  L480      AbstractCegarLoop]: Abstraction has 20 states and 28 transitions.
[2018-10-03 09:20:38,808 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-10-03 09:20:38,808 INFO  L276                IsEmpty]: Start isEmpty. Operand 20 states and 28 transitions.
[2018-10-03 09:20:38,808 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:38,808 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:38,808 INFO  L375         BasicCegarLoop]: trace histogram [8, 8, 1, 1, 1]
[2018-10-03 09:20:38,809 INFO  L423      AbstractCegarLoop]: === Iteration 256 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:38,809 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:38,809 INFO  L82        PathProgramCache]: Analyzing trace with hash 1610002744, now seen corresponding path program 8 times
[2018-10-03 09:20:38,809 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:38,809 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:38,810 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:38,810 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:38,810 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:38,811 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:38,885 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:38,886 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:38,886 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 256 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:38,901 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:20:38,908 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:20:38,909 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:38,909 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:38,958 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:38,978 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:38,979 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:38,979 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:38,979 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:38,979 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:38,979 INFO  L87              Difference]: Start difference. First operand 20 states and 28 transitions. Second operand 11 states.
[2018-10-03 09:20:39,556 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:39,557 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:20:39,558 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:39,558 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:39,558 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:39,558 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:20:39,559 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:20:39,559 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:20:39,559 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:20:39,834 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34.
[2018-10-03 09:20:39,835 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:20:39,835 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:20:39,835 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:20:39,835 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:39,835 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:20:39,835 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:39,835 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:20:39,836 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:39,836 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:39,836 INFO  L375         BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1]
[2018-10-03 09:20:39,836 INFO  L423      AbstractCegarLoop]: === Iteration 257 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:39,836 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:39,837 INFO  L82        PathProgramCache]: Analyzing trace with hash 1610004666, now seen corresponding path program 241 times
[2018-10-03 09:20:39,837 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:39,837 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:39,838 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:39,838 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:39,838 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:39,839 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:39,922 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:39,923 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:39,923 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 257 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:39,934 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:39,939 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:39,941 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:39,991 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:40,012 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:40,012 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:40,012 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:40,013 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:40,013 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:40,013 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:20:40,597 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:40,598 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:20:40,598 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:40,598 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:40,598 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:40,598 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:20:40,598 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:20:40,599 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:20:40,599 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:20:40,865 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32.
[2018-10-03 09:20:40,865 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:40,866 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:40,866 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:20:40,866 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:40,866 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:40,866 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:40,866 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:40,866 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:40,866 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:40,866 INFO  L375         BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1]
[2018-10-03 09:20:40,867 INFO  L423      AbstractCegarLoop]: === Iteration 258 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:40,867 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:40,867 INFO  L82        PathProgramCache]: Analyzing trace with hash 1611849786, now seen corresponding path program 242 times
[2018-10-03 09:20:40,867 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:40,867 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:40,867 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:40,867 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:40,868 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:40,868 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:42,275 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:42,275 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:42,276 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 258 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:42,291 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:20:42,323 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:20:42,324 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:42,325 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:42,452 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:42,472 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:42,472 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:42,472 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:42,473 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:42,473 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:42,473 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:20:43,046 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:43,046 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:20:43,046 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:43,046 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:43,047 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:43,047 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:20:43,047 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:20:43,047 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s Time 1.1s impTime 9
[2018-10-03 09:20:43,048 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:20:43,335 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34.
[2018-10-03 09:20:43,335 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:20:43,335 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:20:43,335 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:20:43,335 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:43,335 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:20:43,336 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:43,336 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:20:43,336 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:43,336 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:43,336 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:20:43,336 INFO  L423      AbstractCegarLoop]: === Iteration 259 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:43,336 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:43,336 INFO  L82        PathProgramCache]: Analyzing trace with hash 1611851708, now seen corresponding path program 243 times
[2018-10-03 09:20:43,336 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:43,336 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:43,337 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:43,337 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:43,337 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:43,337 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:43,403 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:43,403 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:43,404 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 259 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:43,412 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:20:43,422 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:20:43,422 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:43,423 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:43,472 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:43,492 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:43,492 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:43,492 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:43,492 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:43,492 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:43,492 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:20:44,051 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:44,052 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:20:44,052 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:44,052 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:44,052 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:44,053 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:20:44,053 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:20:44,053 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:20:44,053 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:20:44,309 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 30.
[2018-10-03 09:20:44,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:44,309 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:44,309 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19
[2018-10-03 09:20:44,309 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:44,309 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:44,309 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:44,309 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:44,309 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:44,309 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:44,310 INFO  L375         BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1]
[2018-10-03 09:20:44,310 INFO  L423      AbstractCegarLoop]: === Iteration 260 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:44,310 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:44,310 INFO  L82        PathProgramCache]: Analyzing trace with hash -909957190, now seen corresponding path program 244 times
[2018-10-03 09:20:44,310 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:44,310 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:44,310 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:44,310 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:44,310 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:44,311 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:44,391 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:44,391 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:44,392 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 260 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:44,399 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:20:44,406 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:20:44,407 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:44,407 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:44,439 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:44,460 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:44,460 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:44,461 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:44,461 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:44,461 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:44,461 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states.
[2018-10-03 09:20:45,072 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:45,073 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:20:45,073 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:45,073 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:45,073 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:45,074 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:20:45,074 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:20:45,074 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:20:45,074 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:20:45,365 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34.
[2018-10-03 09:20:45,365 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:20:45,365 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:20:45,365 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:20:45,366 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:45,366 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:20:45,366 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:45,366 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:20:45,366 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:45,366 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:45,366 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:20:45,366 INFO  L423      AbstractCegarLoop]: === Iteration 261 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:45,366 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:45,366 INFO  L82        PathProgramCache]: Analyzing trace with hash -909955268, now seen corresponding path program 245 times
[2018-10-03 09:20:45,366 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:45,366 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:45,367 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:45,367 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:45,367 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:45,368 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:45,434 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:45,435 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:45,435 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 261 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:45,444 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:20:45,452 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:20:45,452 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:45,453 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:45,500 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:45,521 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:45,521 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:45,521 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:45,522 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:45,522 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:45,522 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:20:46,127 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:46,128 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:20:46,128 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:46,128 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:46,128 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:46,129 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:20:46,129 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:20:46,129 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:20:46,129 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:20:46,408 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32.
[2018-10-03 09:20:46,408 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:46,408 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:46,408 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:20:46,409 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:46,409 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:46,409 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:46,409 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:46,409 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:46,409 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:46,409 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:20:46,409 INFO  L423      AbstractCegarLoop]: === Iteration 262 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:46,409 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:46,409 INFO  L82        PathProgramCache]: Analyzing trace with hash -908110148, now seen corresponding path program 246 times
[2018-10-03 09:20:46,409 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:46,410 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:46,410 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:46,410 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:46,410 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:46,411 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:46,491 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:46,492 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:46,492 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 262 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:46,501 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:20:46,511 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:20:46,511 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:46,512 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:46,557 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:46,578 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:46,578 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:46,578 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:46,578 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:46,578 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:46,578 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:20:47,147 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:47,148 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:20:47,148 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:47,148 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:47,148 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:47,149 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:20:47,149 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:20:47,149 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:20:47,149 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:20:47,433 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34.
[2018-10-03 09:20:47,433 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:20:47,433 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:20:47,433 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:20:47,433 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:47,433 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:20:47,433 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:47,434 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:20:47,434 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:47,434 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:47,434 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:20:47,434 INFO  L423      AbstractCegarLoop]: === Iteration 263 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:47,434 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:47,434 INFO  L82        PathProgramCache]: Analyzing trace with hash -908108226, now seen corresponding path program 247 times
[2018-10-03 09:20:47,434 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:47,434 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:47,435 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:47,435 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:47,435 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:47,436 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:47,581 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:47,581 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:47,581 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 263 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:47,592 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:47,598 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:47,599 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:47,658 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:47,678 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:47,678 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:47,678 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:47,678 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:47,678 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:47,678 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:20:48,237 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:48,238 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:20:48,238 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:48,238 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:48,238 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:48,238 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:20:48,238 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:20:48,238 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime 9
[2018-10-03 09:20:48,239 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:20:48,480 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 28.
[2018-10-03 09:20:48,480 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:20:48,480 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:20:48,480 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 19
[2018-10-03 09:20:48,481 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:48,481 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:20:48,481 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:48,481 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:20:48,481 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:48,481 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:48,481 INFO  L375         BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1]
[2018-10-03 09:20:48,481 INFO  L423      AbstractCegarLoop]: === Iteration 264 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:48,481 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:48,481 INFO  L82        PathProgramCache]: Analyzing trace with hash -2004906182, now seen corresponding path program 248 times
[2018-10-03 09:20:48,481 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:48,482 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:48,482 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:48,482 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:48,482 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:48,483 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:48,562 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:48,563 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:48,563 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 264 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:48,571 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:20:48,578 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:20:48,578 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:48,579 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:48,611 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:48,632 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:48,632 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:48,632 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:48,633 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:48,633 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:48,633 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 11 states.
[2018-10-03 09:20:49,201 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:49,202 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:20:49,202 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:49,202 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:49,202 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:49,203 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:20:49,203 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:20:49,203 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:20:49,203 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:20:49,482 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34.
[2018-10-03 09:20:49,483 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:20:49,483 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:20:49,483 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:20:49,483 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:49,483 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:20:49,483 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:49,483 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:20:49,483 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:49,483 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:49,483 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:20:49,484 INFO  L423      AbstractCegarLoop]: === Iteration 265 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:49,484 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:49,484 INFO  L82        PathProgramCache]: Analyzing trace with hash -2004904260, now seen corresponding path program 249 times
[2018-10-03 09:20:49,484 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:49,484 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:49,484 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:49,484 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:49,484 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:49,485 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:49,562 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:49,563 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:49,563 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 265 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:49,570 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:20:49,580 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:20:49,580 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:49,581 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:49,665 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:49,686 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:49,686 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:49,686 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:49,686 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:49,686 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:49,686 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:20:50,220 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:50,221 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:20:50,221 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:50,221 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:50,221 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:50,222 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:20:50,222 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:20:50,222 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:20:50,223 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:20:50,499 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32.
[2018-10-03 09:20:50,500 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:50,500 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:50,500 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:20:50,500 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:50,500 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:50,500 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:50,500 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:50,500 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:50,500 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:50,500 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:20:50,500 INFO  L423      AbstractCegarLoop]: === Iteration 266 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:50,501 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:50,501 INFO  L82        PathProgramCache]: Analyzing trace with hash -2003059140, now seen corresponding path program 250 times
[2018-10-03 09:20:50,501 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:50,501 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:50,501 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:50,501 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:50,501 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:50,502 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:50,575 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:50,575 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:50,575 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 266 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:50,583 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:20:50,590 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:20:50,590 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:50,591 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:50,644 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:50,665 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:50,665 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:50,665 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:50,665 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:50,665 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:50,666 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:20:51,219 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:51,220 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:20:51,220 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:51,220 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:51,220 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:51,221 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:20:51,221 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:20:51,221 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:20:51,221 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:20:51,510 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34.
[2018-10-03 09:20:51,511 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:20:51,511 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:20:51,511 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:20:51,511 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:51,511 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:20:51,511 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:51,511 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:20:51,511 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:51,511 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:51,511 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:20:51,512 INFO  L423      AbstractCegarLoop]: === Iteration 267 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:51,512 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:51,512 INFO  L82        PathProgramCache]: Analyzing trace with hash -2003057218, now seen corresponding path program 251 times
[2018-10-03 09:20:51,512 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:51,512 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:51,513 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:51,513 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:51,513 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:51,513 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:51,592 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:51,592 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:51,592 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 267 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:51,603 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:20:51,613 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:20:51,613 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:51,614 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:51,647 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:51,668 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:51,668 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:51,668 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:51,668 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:51,668 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:51,668 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:20:52,202 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:52,203 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:20:52,203 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:52,203 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:52,203 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:52,204 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:20:52,204 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:20:52,204 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:20:52,204 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:20:52,460 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 30.
[2018-10-03 09:20:52,460 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:20:52,460 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:20:52,460 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19
[2018-10-03 09:20:52,461 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:52,461 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:20:52,461 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:52,461 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:20:52,461 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:52,461 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:52,461 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:20:52,461 INFO  L423      AbstractCegarLoop]: === Iteration 268 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:52,461 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:52,461 INFO  L82        PathProgramCache]: Analyzing trace with hash -229898820, now seen corresponding path program 252 times
[2018-10-03 09:20:52,461 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:52,462 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:52,462 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:52,462 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:52,462 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:52,463 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:52,570 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:52,570 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:52,570 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 268 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:52,579 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:20:52,594 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:20:52,595 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:52,596 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:52,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:52,675 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:52,675 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:52,675 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:52,675 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:52,675 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:52,676 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states.
[2018-10-03 09:20:53,181 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:53,182 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:20:53,182 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:53,182 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:53,183 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:53,183 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:20:53,183 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:20:53,183 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:20:53,183 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:20:53,479 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34.
[2018-10-03 09:20:53,480 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:20:53,480 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:20:53,480 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:20:53,480 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:53,480 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:20:53,480 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:53,480 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:20:53,480 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:53,480 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:53,480 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:20:53,481 INFO  L423      AbstractCegarLoop]: === Iteration 269 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:53,481 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:53,481 INFO  L82        PathProgramCache]: Analyzing trace with hash -229896898, now seen corresponding path program 253 times
[2018-10-03 09:20:53,481 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:53,481 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:53,481 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:53,481 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:53,481 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:53,482 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:53,558 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:53,558 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:53,558 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 269 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:53,567 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:53,573 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:53,574 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:53,634 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:53,655 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:53,655 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:53,655 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:53,656 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:53,656 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:53,656 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:20:54,173 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:54,174 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:20:54,174 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:54,174 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:54,174 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:54,175 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:20:54,175 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:20:54,175 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:20:54,175 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:20:54,446 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32.
[2018-10-03 09:20:54,446 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:54,446 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:54,446 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:20:54,446 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:54,447 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:54,447 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:54,447 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:54,447 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:54,447 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:54,447 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:20:54,447 INFO  L423      AbstractCegarLoop]: === Iteration 270 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:54,447 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:54,447 INFO  L82        PathProgramCache]: Analyzing trace with hash -228051778, now seen corresponding path program 254 times
[2018-10-03 09:20:54,447 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:54,447 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:54,448 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:54,448 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:20:54,448 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:54,449 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:54,522 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:54,522 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:54,522 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 270 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:54,530 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:20:54,537 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:20:54,537 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:54,538 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:54,571 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:54,593 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:54,593 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:54,593 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:54,594 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:54,594 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:54,594 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:20:55,098 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:55,099 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:20:55,099 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:55,099 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:55,099 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:55,100 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:20:55,100 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:20:55,100 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:20:55,100 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:20:55,384 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34.
[2018-10-03 09:20:55,384 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:20:55,384 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:20:55,384 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:20:55,384 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:55,385 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:20:55,385 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:55,385 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:20:55,385 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:55,385 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:55,385 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:20:55,385 INFO  L423      AbstractCegarLoop]: === Iteration 271 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:55,385 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:55,386 INFO  L82        PathProgramCache]: Analyzing trace with hash -228049856, now seen corresponding path program 255 times
[2018-10-03 09:20:55,386 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:55,386 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:55,386 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:55,386 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:55,386 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:55,387 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:55,458 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:55,459 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:55,459 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 271 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:55,466 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:20:55,477 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:20:55,477 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:55,478 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:55,508 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:55,529 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:55,529 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:55,529 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:55,529 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:55,529 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:55,530 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:20:56,002 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:56,003 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:20:56,003 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:56,003 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:56,003 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:56,003 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:20:56,003 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:20:56,004 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:20:56,004 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:20:56,298 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26.
[2018-10-03 09:20:56,298 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:20:56,298 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:20:56,298 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 19
[2018-10-03 09:20:56,298 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:56,298 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:20:56,298 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:56,298 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:20:56,299 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:56,299 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:56,299 INFO  L375         BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1]
[2018-10-03 09:20:56,299 INFO  L423      AbstractCegarLoop]: === Iteration 272 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:56,299 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:56,299 INFO  L82        PathProgramCache]: Analyzing trace with hash -1983899974, now seen corresponding path program 256 times
[2018-10-03 09:20:56,299 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:56,299 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:56,299 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:56,300 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:56,300 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:56,301 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:56,393 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:56,394 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:56,394 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 272 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:56,403 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:20:56,410 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:20:56,410 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:56,411 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:56,455 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:56,477 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:56,478 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:56,478 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:56,478 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:56,478 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:56,478 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 11 states.
[2018-10-03 09:20:57,102 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:57,103 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:20:57,103 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:57,103 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:57,103 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:57,104 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:20:57,104 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:20:57,104 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:20:57,104 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:20:57,395 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34.
[2018-10-03 09:20:57,395 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:20:57,395 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:20:57,395 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:20:57,395 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:57,395 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:20:57,395 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:57,395 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:20:57,395 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:57,395 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:57,396 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:20:57,396 INFO  L423      AbstractCegarLoop]: === Iteration 273 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:57,396 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:57,396 INFO  L82        PathProgramCache]: Analyzing trace with hash -1983898052, now seen corresponding path program 257 times
[2018-10-03 09:20:57,396 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:57,396 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:57,396 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:57,396 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:57,397 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:57,397 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:57,458 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:57,458 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:57,458 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 273 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:57,467 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:20:57,477 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:20:57,477 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:57,478 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:57,524 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:57,544 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:57,544 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:57,544 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:57,544 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:57,545 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:57,545 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:20:58,173 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:20:58,174 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:20:58,174 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:20:58,174 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:20:58,174 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:20:58,174 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:20:58,174 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:20:58,175 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:20:58,175 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:20:58,461 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32.
[2018-10-03 09:20:58,461 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:20:58,462 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:20:58,462 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:20:58,462 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:20:58,462 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:20:58,462 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:20:58,462 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:20:58,462 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:20:58,462 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:20:58,462 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:20:58,462 INFO  L423      AbstractCegarLoop]: === Iteration 274 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:20:58,462 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:20:58,463 INFO  L82        PathProgramCache]: Analyzing trace with hash -1982052932, now seen corresponding path program 258 times
[2018-10-03 09:20:58,463 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:20:58,463 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:20:58,463 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:58,463 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:20:58,463 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:20:58,464 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:20:59,715 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:59,715 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:20:59,715 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 274 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:20:59,730 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:20:59,779 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:20:59,779 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:20:59,780 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:20:59,803 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:20:59,825 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:20:59,825 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:20:59,825 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:20:59,825 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:20:59,825 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:20:59,825 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:21:00,437 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:00,438 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:21:00,438 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:00,438 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:00,438 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:00,439 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:21:00,439 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:21:00,439 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s Time 0.9s impTime 9
[2018-10-03 09:21:00,439 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:21:00,725 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34.
[2018-10-03 09:21:00,726 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:00,726 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:00,726 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:00,726 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:00,726 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:00,726 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:00,726 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:00,726 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:00,726 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:00,727 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:00,727 INFO  L423      AbstractCegarLoop]: === Iteration 275 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:00,727 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:00,727 INFO  L82        PathProgramCache]: Analyzing trace with hash -1982051010, now seen corresponding path program 259 times
[2018-10-03 09:21:00,727 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:00,727 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:00,727 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:00,727 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:00,728 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:00,728 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:00,803 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:00,803 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:00,803 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 275 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:00,810 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:00,816 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:00,817 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:00,858 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:00,879 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:00,879 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:00,879 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:00,880 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:00,880 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:00,880 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:01,464 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:01,465 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:21:01,465 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:01,465 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:01,465 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:01,466 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:21:01,466 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:21:01,466 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:01,466 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:21:01,746 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 30.
[2018-10-03 09:21:01,747 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:21:01,747 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:21:01,747 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19
[2018-10-03 09:21:01,747 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:01,747 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:21:01,747 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:01,747 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:21:01,747 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:01,747 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:01,748 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:21:01,748 INFO  L423      AbstractCegarLoop]: === Iteration 276 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:01,748 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:01,748 INFO  L82        PathProgramCache]: Analyzing trace with hash -208892612, now seen corresponding path program 260 times
[2018-10-03 09:21:01,748 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:01,748 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:01,748 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:01,749 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:01,749 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:01,750 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:01,830 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:01,830 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:01,830 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 276 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:01,838 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:21:01,844 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:21:01,844 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:01,845 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:01,871 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:01,892 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:01,892 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:01,892 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:01,893 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:01,893 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:01,893 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states.
[2018-10-03 09:21:02,525 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:02,526 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:21:02,526 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:02,526 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:02,526 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:02,527 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:21:02,527 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:21:02,527 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:02,527 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:21:02,834 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34.
[2018-10-03 09:21:02,834 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:02,834 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:02,834 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:02,834 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:02,834 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:02,834 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:02,834 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:02,834 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:02,834 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:02,835 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:02,835 INFO  L423      AbstractCegarLoop]: === Iteration 277 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:02,835 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:02,835 INFO  L82        PathProgramCache]: Analyzing trace with hash -208890690, now seen corresponding path program 261 times
[2018-10-03 09:21:02,835 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:02,835 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:02,835 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:02,835 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:02,836 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:02,837 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:02,978 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:02,978 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:02,978 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 277 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:02,986 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:21:02,996 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:21:02,997 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:02,997 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:03,061 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:03,080 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:03,081 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:03,081 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:03,081 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:03,081 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:03,081 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:03,722 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:03,723 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:21:03,723 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:03,723 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:03,723 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:03,723 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:21:03,723 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:21:03,723 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:03,724 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:21:04,004 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32.
[2018-10-03 09:21:04,005 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:21:04,005 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:21:04,005 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:21:04,005 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:04,005 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:21:04,005 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:04,005 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:21:04,005 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:04,005 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:04,005 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:04,005 INFO  L423      AbstractCegarLoop]: === Iteration 278 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:04,006 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:04,006 INFO  L82        PathProgramCache]: Analyzing trace with hash -207045570, now seen corresponding path program 262 times
[2018-10-03 09:21:04,006 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:04,006 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:04,006 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:04,006 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:04,006 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:04,007 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:04,089 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:04,089 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:04,089 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 278 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:04,096 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:21:04,102 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:21:04,103 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:04,103 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:04,138 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:04,159 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:04,159 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:04,159 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:04,159 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:04,159 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:04,159 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:21:04,766 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:04,767 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:21:04,767 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:04,767 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:04,767 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:04,768 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:21:04,768 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:21:04,768 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:04,768 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:21:05,062 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34.
[2018-10-03 09:21:05,063 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:05,063 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:05,063 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:05,063 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:05,063 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:05,063 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:05,063 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:05,063 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:05,063 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:05,063 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:05,064 INFO  L423      AbstractCegarLoop]: === Iteration 279 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:05,064 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:05,064 INFO  L82        PathProgramCache]: Analyzing trace with hash -207043648, now seen corresponding path program 263 times
[2018-10-03 09:21:05,064 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:05,064 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:05,064 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:05,064 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:05,064 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:05,065 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:05,142 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:05,142 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:05,142 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 279 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:05,149 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:21:05,159 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:21:05,159 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:05,160 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:05,206 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:05,227 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:05,228 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:05,228 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:05,228 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:05,228 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:05,228 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:05,823 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:05,824 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:21:05,824 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:05,824 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:05,824 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:05,825 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:21:05,825 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:21:05,825 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:05,825 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:21:06,080 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 28.
[2018-10-03 09:21:06,081 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:21:06,081 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:21:06,081 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 19
[2018-10-03 09:21:06,081 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:06,081 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:21:06,081 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:06,081 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:21:06,081 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:06,081 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:06,082 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:21:06,082 INFO  L423      AbstractCegarLoop]: === Iteration 280 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:06,082 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:06,082 INFO  L82        PathProgramCache]: Analyzing trace with hash -1303841604, now seen corresponding path program 264 times
[2018-10-03 09:21:06,082 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:06,082 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:06,082 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:06,082 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:06,083 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:06,083 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:06,142 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:06,142 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:06,143 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 280 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:06,151 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:21:06,162 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:21:06,162 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:06,163 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:06,198 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:06,221 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:06,222 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:06,222 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:06,222 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:06,222 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:06,222 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 11 states.
[2018-10-03 09:21:06,812 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:06,813 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:21:06,813 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:06,813 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:06,813 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:06,813 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:21:06,814 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:21:06,814 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:21:06,814 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:21:07,123 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34.
[2018-10-03 09:21:07,123 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:07,123 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:07,123 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:07,123 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:07,123 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:07,123 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:07,123 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:07,123 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:07,124 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:07,124 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:07,124 INFO  L423      AbstractCegarLoop]: === Iteration 281 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:07,124 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:07,124 INFO  L82        PathProgramCache]: Analyzing trace with hash -1303839682, now seen corresponding path program 265 times
[2018-10-03 09:21:07,124 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:07,124 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:07,124 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:07,124 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:07,125 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:07,125 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:07,428 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:07,428 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:07,429 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 281 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:07,437 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:07,442 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:07,443 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:07,468 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:07,489 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:07,489 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:07,489 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:07,490 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:07,490 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:07,490 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:08,047 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:08,047 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:21:08,047 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:08,047 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:08,047 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:08,047 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:21:08,048 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:21:08,048 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.2s impTime 9
[2018-10-03 09:21:08,048 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:21:08,343 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32.
[2018-10-03 09:21:08,343 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:21:08,343 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:21:08,344 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:21:08,344 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:08,344 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:21:08,344 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:08,344 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:21:08,344 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:08,344 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:08,344 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:08,344 INFO  L423      AbstractCegarLoop]: === Iteration 282 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:08,344 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:08,344 INFO  L82        PathProgramCache]: Analyzing trace with hash -1301994562, now seen corresponding path program 266 times
[2018-10-03 09:21:08,345 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:08,345 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:08,345 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:08,345 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:08,345 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:08,346 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:08,418 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:08,418 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:08,418 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 282 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:08,425 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:21:08,433 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:21:08,434 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:08,434 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:08,462 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:08,483 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:08,483 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:08,483 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:08,483 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:08,483 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:08,484 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:21:09,066 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:09,067 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:21:09,067 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:09,067 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:09,067 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:09,068 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:21:09,068 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:21:09,068 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:21:09,068 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:21:09,373 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34.
[2018-10-03 09:21:09,374 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:09,374 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:09,374 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:09,374 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:09,374 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:09,374 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:09,374 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:09,374 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:09,374 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:09,375 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:09,375 INFO  L423      AbstractCegarLoop]: === Iteration 283 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:09,375 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:09,375 INFO  L82        PathProgramCache]: Analyzing trace with hash -1301992640, now seen corresponding path program 267 times
[2018-10-03 09:21:09,375 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:09,375 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:09,375 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:09,375 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:09,376 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:09,376 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:09,439 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:09,439 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:09,439 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 283 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:09,446 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:21:09,458 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:21:09,458 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:09,459 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:09,566 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:09,587 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:09,587 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:09,587 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:09,588 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:09,588 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:09,588 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:10,155 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:10,156 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:21:10,156 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:10,156 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:10,156 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:10,157 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:21:10,157 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:21:10,157 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:10,157 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:21:10,465 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 30.
[2018-10-03 09:21:10,465 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:21:10,465 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:21:10,465 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19
[2018-10-03 09:21:10,465 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:10,466 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:21:10,466 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:10,466 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:21:10,466 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:10,466 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:10,466 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:10,466 INFO  L423      AbstractCegarLoop]: === Iteration 284 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:10,466 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:10,466 INFO  L82        PathProgramCache]: Analyzing trace with hash 471165758, now seen corresponding path program 268 times
[2018-10-03 09:21:10,466 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:10,466 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:10,467 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:10,467 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:10,467 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:10,468 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:10,550 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:10,550 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:10,550 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 284 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:10,558 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:21:10,565 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:21:10,566 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:10,567 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:10,602 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:10,623 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:10,624 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:10,624 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:10,624 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:10,624 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:10,624 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states.
[2018-10-03 09:21:11,160 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:11,161 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:21:11,161 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:11,161 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:11,161 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:11,162 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:21:11,162 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:21:11,162 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:11,162 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:21:11,467 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34.
[2018-10-03 09:21:11,467 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:11,467 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:11,467 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:11,467 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:11,467 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:11,467 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:11,467 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:11,468 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:11,468 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:11,468 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:11,468 INFO  L423      AbstractCegarLoop]: === Iteration 285 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:11,468 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:11,468 INFO  L82        PathProgramCache]: Analyzing trace with hash 471167680, now seen corresponding path program 269 times
[2018-10-03 09:21:11,468 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:11,468 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:11,468 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:11,469 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:11,469 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:11,469 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:11,543 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:11,543 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:11,543 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 285 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:11,554 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:21:11,564 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:21:11,564 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:11,565 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:11,608 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:11,628 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:11,628 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:11,629 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:11,629 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:11,629 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:11,629 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:12,169 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:12,170 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:21:12,170 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:12,170 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:12,170 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:12,171 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:21:12,171 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:21:12,171 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:12,171 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:21:12,477 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32.
[2018-10-03 09:21:12,477 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:21:12,478 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:21:12,478 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:21:12,478 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:12,478 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:21:12,478 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:12,478 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:21:12,478 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:12,478 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:12,478 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:12,479 INFO  L423      AbstractCegarLoop]: === Iteration 286 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:12,479 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:12,479 INFO  L82        PathProgramCache]: Analyzing trace with hash 473012800, now seen corresponding path program 270 times
[2018-10-03 09:21:12,479 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:12,479 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:12,479 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:12,479 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:12,479 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:12,480 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:12,547 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:12,547 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:12,547 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 286 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:12,557 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:21:12,567 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:21:12,567 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:12,568 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:12,601 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:12,623 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:12,623 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:12,623 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:12,623 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:12,623 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:12,623 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:21:13,136 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:13,136 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:21:13,136 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:13,136 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:13,136 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:13,136 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:21:13,137 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:21:13,137 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:21:13,137 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:21:13,438 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34.
[2018-10-03 09:21:13,438 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:13,438 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:13,439 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:13,439 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:13,439 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:13,439 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:13,439 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:13,439 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:13,439 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:13,439 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:13,439 INFO  L423      AbstractCegarLoop]: === Iteration 287 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:13,439 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:13,439 INFO  L82        PathProgramCache]: Analyzing trace with hash 473014722, now seen corresponding path program 271 times
[2018-10-03 09:21:13,439 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:13,440 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:13,440 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:13,440 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:13,440 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:13,441 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:13,520 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:13,520 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:13,520 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 287 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:13,528 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:13,533 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:13,534 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:13,562 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:13,583 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:13,583 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:13,583 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:13,583 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:13,583 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:13,583 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:14,071 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:14,072 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:21:14,072 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:14,072 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:14,072 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:14,073 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:21:14,073 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:21:14,073 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:14,073 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:21:14,278 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 24.
[2018-10-03 09:21:14,279 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:21:14,279 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:21:14,279 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 19
[2018-10-03 09:21:14,279 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:14,279 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:21:14,279 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:14,279 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:21:14,279 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:14,279 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:14,279 INFO  L375         BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1]
[2018-10-03 09:21:14,280 INFO  L423      AbstractCegarLoop]: === Iteration 288 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:14,280 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:14,280 INFO  L82        PathProgramCache]: Analyzing trace with hash 1023196730, now seen corresponding path program 272 times
[2018-10-03 09:21:14,280 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:14,280 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:14,280 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:14,280 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:14,280 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:14,281 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:14,345 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:14,345 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:14,345 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 288 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:14,352 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:21:14,359 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:21:14,360 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:14,361 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:14,395 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:14,416 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:14,416 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:14,416 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:14,416 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:14,417 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:14,417 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 11 states.
[2018-10-03 09:21:15,000 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:15,001 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:21:15,001 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:15,001 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:15,001 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:15,001 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:21:15,001 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:21:15,002 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:21:15,002 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:21:15,327 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34.
[2018-10-03 09:21:15,327 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:15,327 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:15,327 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:15,327 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:15,327 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:15,327 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:15,328 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:15,328 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:15,328 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:15,328 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:21:15,328 INFO  L423      AbstractCegarLoop]: === Iteration 289 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:15,328 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:15,328 INFO  L82        PathProgramCache]: Analyzing trace with hash 1023198652, now seen corresponding path program 273 times
[2018-10-03 09:21:15,328 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:15,328 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:15,329 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:15,329 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:15,329 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:15,329 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:15,401 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:15,402 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:15,402 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 289 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:15,409 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:21:15,419 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:21:15,419 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:15,420 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:15,454 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:15,475 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:15,475 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:15,476 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:15,476 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:15,476 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:15,476 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:16,064 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:16,064 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:21:16,064 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:16,064 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:16,064 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:16,064 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:21:16,064 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:21:16,065 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:16,065 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:21:16,368 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32.
[2018-10-03 09:21:16,369 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:21:16,369 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:21:16,369 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:21:16,369 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:16,369 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:21:16,369 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:16,369 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:21:16,369 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:16,369 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:16,369 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:21:16,369 INFO  L423      AbstractCegarLoop]: === Iteration 290 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:16,370 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:16,370 INFO  L82        PathProgramCache]: Analyzing trace with hash 1025043772, now seen corresponding path program 274 times
[2018-10-03 09:21:16,370 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:16,370 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:16,370 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:16,370 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:16,370 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:16,371 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:17,390 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:17,390 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:17,391 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 290 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:17,398 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:21:17,404 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:21:17,404 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:17,405 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:17,532 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:17,553 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:17,553 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:17,553 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:17,553 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:17,554 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:17,554 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:21:18,177 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:18,177 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:21:18,177 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:18,177 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:18,177 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:18,178 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:21:18,178 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:21:18,178 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s Time 0.7s impTime 9
[2018-10-03 09:21:18,178 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:21:18,490 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34.
[2018-10-03 09:21:18,490 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:18,490 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:18,490 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:18,490 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:18,490 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:18,490 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:18,490 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:18,491 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:18,491 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:18,491 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:18,491 INFO  L423      AbstractCegarLoop]: === Iteration 291 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:18,491 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:18,491 INFO  L82        PathProgramCache]: Analyzing trace with hash 1025045694, now seen corresponding path program 275 times
[2018-10-03 09:21:18,491 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:18,491 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:18,492 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:18,492 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:18,492 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:18,492 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:18,596 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:18,596 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:18,596 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 291 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:18,604 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:21:18,612 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:21:18,612 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:18,613 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:18,639 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:18,660 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:18,661 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:18,661 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:18,661 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:18,661 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:18,661 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:19,226 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:19,227 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:21:19,227 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:19,227 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:19,227 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:19,228 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:21:19,228 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:21:19,228 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:19,228 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:21:19,518 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30.
[2018-10-03 09:21:19,518 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:21:19,518 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:21:19,518 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19
[2018-10-03 09:21:19,519 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:19,519 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:21:19,519 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:19,519 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:21:19,519 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:19,519 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:19,519 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:21:19,519 INFO  L423      AbstractCegarLoop]: === Iteration 292 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:19,519 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:19,519 INFO  L82        PathProgramCache]: Analyzing trace with hash -1496763204, now seen corresponding path program 276 times
[2018-10-03 09:21:19,519 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:19,519 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:19,520 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:19,520 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:19,520 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:19,521 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:19,595 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:19,596 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:19,596 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 292 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:19,604 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:21:19,613 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:21:19,613 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:19,614 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:19,663 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:19,684 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:19,684 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:19,684 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:19,685 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:19,685 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:19,685 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states.
[2018-10-03 09:21:20,218 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:20,219 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:21:20,219 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:20,219 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:20,219 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:20,220 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:21:20,220 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:21:20,220 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:20,220 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:21:20,547 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34.
[2018-10-03 09:21:20,547 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:20,547 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:20,547 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:20,547 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:20,548 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:20,548 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:20,548 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:20,548 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:20,548 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:20,548 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:20,548 INFO  L423      AbstractCegarLoop]: === Iteration 293 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:20,548 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:20,548 INFO  L82        PathProgramCache]: Analyzing trace with hash -1496761282, now seen corresponding path program 277 times
[2018-10-03 09:21:20,548 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:20,548 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:20,549 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:20,549 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:20,549 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:20,550 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:20,621 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:20,621 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:20,621 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 293 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:20,628 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:20,633 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:20,634 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:20,668 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:20,690 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:20,690 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:20,690 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:20,690 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:20,690 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:20,690 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:21,240 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:21,241 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:21:21,241 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:21,241 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:21,241 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:21,242 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:21:21,242 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:21:21,242 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:21,242 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:21:21,622 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32.
[2018-10-03 09:21:21,622 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:21:21,622 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:21:21,622 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:21:21,622 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:21,622 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:21:21,622 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:21,622 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:21:21,623 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:21,623 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:21,623 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:21,623 INFO  L423      AbstractCegarLoop]: === Iteration 294 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:21,623 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:21,623 INFO  L82        PathProgramCache]: Analyzing trace with hash -1494916162, now seen corresponding path program 278 times
[2018-10-03 09:21:21,623 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:21,623 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:21,623 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:21,624 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:21,624 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:21,624 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:21,699 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:21,699 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:21,699 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 294 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:21,707 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:21:21,713 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:21:21,714 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:21,714 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:21,747 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:21,768 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:21,769 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:21,769 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:21,769 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:21,769 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:21,769 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:21:22,297 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:22,298 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:21:22,298 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:22,298 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:22,298 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:22,299 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:21:22,299 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:21:22,299 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:22,299 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:21:22,618 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34.
[2018-10-03 09:21:22,618 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:22,618 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:22,618 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:22,618 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:22,619 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:22,619 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:22,619 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:22,619 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:22,619 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:22,619 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:22,619 INFO  L423      AbstractCegarLoop]: === Iteration 295 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:22,619 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:22,619 INFO  L82        PathProgramCache]: Analyzing trace with hash -1494914240, now seen corresponding path program 279 times
[2018-10-03 09:21:22,619 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:22,619 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:22,620 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:22,620 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:22,620 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:22,621 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:22,687 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:22,687 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:22,687 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 295 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:22,694 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:21:22,704 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:21:22,704 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:22,705 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:22,755 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:22,776 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:22,776 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:22,776 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:22,776 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:22,776 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:22,777 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:23,258 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:23,258 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:21:23,258 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:23,258 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:23,258 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:23,258 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:21:23,259 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:21:23,259 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:23,259 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:21:23,529 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28.
[2018-10-03 09:21:23,530 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:21:23,530 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:21:23,530 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 19
[2018-10-03 09:21:23,530 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:23,530 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:21:23,530 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:23,530 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:21:23,530 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:23,530 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:23,530 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:21:23,531 INFO  L423      AbstractCegarLoop]: === Iteration 296 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:23,531 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:23,531 INFO  L82        PathProgramCache]: Analyzing trace with hash 1703255100, now seen corresponding path program 280 times
[2018-10-03 09:21:23,531 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:23,531 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:23,531 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:23,531 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:23,531 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:23,532 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:23,640 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:23,641 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:23,641 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 296 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:23,649 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:21:23,657 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:21:23,657 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:23,657 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:23,687 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:23,709 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:23,709 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:23,709 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:23,710 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:23,710 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:23,710 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 11 states.
[2018-10-03 09:21:24,323 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:24,324 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:21:24,324 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:24,324 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:24,324 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:24,325 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:21:24,325 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:21:24,325 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:24,325 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:21:24,656 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34.
[2018-10-03 09:21:24,656 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:24,656 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:24,657 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:24,657 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:24,657 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:24,657 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:24,657 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:24,657 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:24,657 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:24,657 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:24,657 INFO  L423      AbstractCegarLoop]: === Iteration 297 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:24,657 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:24,657 INFO  L82        PathProgramCache]: Analyzing trace with hash 1703257022, now seen corresponding path program 281 times
[2018-10-03 09:21:24,657 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:24,658 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:24,658 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:24,658 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:24,658 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:24,659 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:24,736 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:24,737 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:24,737 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 297 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:24,744 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:21:24,754 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:21:24,754 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:24,755 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:24,785 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:24,805 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:24,805 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:24,805 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:24,805 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:24,805 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:24,806 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:25,394 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:25,395 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:21:25,395 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:25,395 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:25,395 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:25,396 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:21:25,396 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:21:25,396 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:25,396 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:21:25,702 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32.
[2018-10-03 09:21:25,703 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:21:25,703 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:21:25,703 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:21:25,703 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:25,703 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:21:25,703 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:25,703 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:21:25,703 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:25,703 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:25,703 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:25,704 INFO  L423      AbstractCegarLoop]: === Iteration 298 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:25,704 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:25,704 INFO  L82        PathProgramCache]: Analyzing trace with hash 1705102142, now seen corresponding path program 282 times
[2018-10-03 09:21:25,704 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:25,704 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:25,704 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:25,704 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:25,704 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:25,705 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:25,766 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:25,766 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:25,766 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 298 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:25,773 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:21:25,783 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:21:25,784 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:25,784 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:26,030 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:26,066 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:26,067 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:26,067 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:26,067 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:26,067 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:26,067 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:21:27,072 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:27,073 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:21:27,073 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:27,073 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:27,073 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:27,074 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:21:27,074 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:21:27,074 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 9
[2018-10-03 09:21:27,074 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:21:27,393 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34.
[2018-10-03 09:21:27,394 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:27,394 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:27,394 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:27,394 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:27,394 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:27,394 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:27,394 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:27,394 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:27,394 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:27,395 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:27,395 INFO  L423      AbstractCegarLoop]: === Iteration 299 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:27,395 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:27,395 INFO  L82        PathProgramCache]: Analyzing trace with hash 1705104064, now seen corresponding path program 283 times
[2018-10-03 09:21:27,395 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:27,395 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:27,395 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:27,395 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:27,396 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:27,396 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:27,459 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:27,460 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:27,460 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 299 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:27,468 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:27,473 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:27,473 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:27,518 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:27,539 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:27,539 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:27,540 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:27,540 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:27,540 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:27,540 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:28,113 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:28,114 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:21:28,114 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:28,114 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:28,114 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:28,115 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:21:28,115 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:21:28,115 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:28,115 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:21:28,501 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30.
[2018-10-03 09:21:28,501 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:21:28,501 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:21:28,502 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19
[2018-10-03 09:21:28,502 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:28,502 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:21:28,502 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:28,502 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:21:28,502 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:28,502 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:28,502 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:28,502 INFO  L423      AbstractCegarLoop]: === Iteration 300 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:28,502 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:28,502 INFO  L82        PathProgramCache]: Analyzing trace with hash -816704834, now seen corresponding path program 284 times
[2018-10-03 09:21:28,502 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:28,503 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:28,503 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:28,503 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:28,503 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:28,504 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:28,636 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:28,636 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:28,636 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 300 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:28,642 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:21:28,650 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:21:28,651 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:28,651 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:28,711 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:28,731 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:28,731 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:28,731 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:28,731 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:28,732 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:28,732 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states.
[2018-10-03 09:21:29,291 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:29,292 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:21:29,292 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:29,292 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:29,292 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:29,293 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:21:29,293 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:21:29,293 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.1s impTime 9
[2018-10-03 09:21:29,293 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:21:29,632 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34.
[2018-10-03 09:21:29,632 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:29,632 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:29,632 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:29,632 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:29,632 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:29,633 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:29,633 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:29,633 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:29,633 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:29,633 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:29,633 INFO  L423      AbstractCegarLoop]: === Iteration 301 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:29,633 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:29,633 INFO  L82        PathProgramCache]: Analyzing trace with hash -816702912, now seen corresponding path program 285 times
[2018-10-03 09:21:29,633 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:29,633 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:29,634 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:29,634 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:29,634 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:29,634 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:29,697 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:29,697 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:29,697 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 301 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:29,704 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:21:29,715 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:21:29,715 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:29,716 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:29,749 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:29,769 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:29,770 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:29,770 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:29,770 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:29,770 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:29,770 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:30,323 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:30,324 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:21:30,324 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:30,324 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:30,324 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:30,325 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:21:30,325 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:21:30,325 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:21:30,325 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:21:30,632 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32.
[2018-10-03 09:21:30,633 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:21:30,633 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:21:30,633 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:21:30,633 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:30,633 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:21:30,633 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:30,633 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:21:30,633 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:30,633 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:30,633 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:30,634 INFO  L423      AbstractCegarLoop]: === Iteration 302 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:30,634 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:30,634 INFO  L82        PathProgramCache]: Analyzing trace with hash -814857792, now seen corresponding path program 286 times
[2018-10-03 09:21:30,634 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:30,634 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:30,634 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:30,634 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:30,634 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:30,635 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:30,713 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:30,713 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:30,713 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 302 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:30,720 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:21:30,727 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:21:30,728 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:30,729 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:30,760 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:30,781 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:30,781 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:30,781 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:30,782 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:30,782 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:30,782 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:21:31,319 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:31,320 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:21:31,320 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:31,320 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:31,320 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:31,321 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:21:31,321 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:21:31,321 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:31,321 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:21:31,641 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34.
[2018-10-03 09:21:31,642 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:31,642 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:31,642 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:31,642 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:31,642 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:31,642 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:31,642 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:31,642 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:31,642 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:31,642 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:31,642 INFO  L423      AbstractCegarLoop]: === Iteration 303 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:31,643 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:31,643 INFO  L82        PathProgramCache]: Analyzing trace with hash -814855870, now seen corresponding path program 287 times
[2018-10-03 09:21:31,643 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:31,643 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:31,643 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:31,643 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:31,643 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:31,644 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:31,718 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:31,719 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:31,719 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 303 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:31,726 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:21:31,736 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:21:31,736 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:31,737 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:31,782 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:31,802 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:31,802 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:31,802 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:31,802 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:31,802 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:31,802 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:32,300 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:32,301 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:21:32,301 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:32,301 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:32,301 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:32,301 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:21:32,301 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:21:32,302 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:32,302 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:21:32,540 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 26.
[2018-10-03 09:21:32,541 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:21:32,541 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:21:32,541 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 19
[2018-10-03 09:21:32,541 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:32,541 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:21:32,541 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:32,541 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:21:32,541 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:32,541 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:32,541 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:21:32,542 INFO  L423      AbstractCegarLoop]: === Iteration 304 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:32,542 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:32,542 INFO  L82        PathProgramCache]: Analyzing trace with hash 1724261308, now seen corresponding path program 288 times
[2018-10-03 09:21:32,542 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:32,542 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:32,542 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:32,542 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:32,542 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:32,543 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:32,611 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:32,611 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:32,611 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 304 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:32,620 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:21:32,630 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:21:32,630 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:32,631 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:32,664 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:32,684 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:32,685 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:32,685 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:32,685 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:32,685 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:32,685 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 11 states.
[2018-10-03 09:21:33,215 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:33,216 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:21:33,216 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:33,216 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:33,216 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:33,217 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:21:33,217 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:21:33,217 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:21:33,217 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:21:33,551 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34.
[2018-10-03 09:21:33,552 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:33,552 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:33,552 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:33,552 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:33,552 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:33,552 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:33,552 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:33,552 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:33,552 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:33,552 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:33,552 INFO  L423      AbstractCegarLoop]: === Iteration 305 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:33,553 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:33,553 INFO  L82        PathProgramCache]: Analyzing trace with hash 1724263230, now seen corresponding path program 289 times
[2018-10-03 09:21:33,553 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:33,553 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:33,553 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:33,553 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:33,553 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:33,554 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:33,675 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:33,675 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:33,675 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 305 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:33,683 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:33,689 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:33,690 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:33,732 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:33,751 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:33,751 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:33,751 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:33,751 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:33,751 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:33,752 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:34,278 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:34,279 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:21:34,279 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:34,279 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:34,279 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:34,280 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:21:34,280 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:21:34,280 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:34,280 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:21:34,609 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32.
[2018-10-03 09:21:34,610 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:21:34,610 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:21:34,610 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:21:34,610 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:34,610 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:21:34,610 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:34,610 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:21:34,610 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:34,610 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:34,610 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:34,611 INFO  L423      AbstractCegarLoop]: === Iteration 306 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:34,611 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:34,611 INFO  L82        PathProgramCache]: Analyzing trace with hash 1726108350, now seen corresponding path program 290 times
[2018-10-03 09:21:34,611 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:34,611 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:34,611 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:34,611 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:34,611 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:34,612 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:34,729 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:34,729 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:34,729 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 306 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:34,737 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:21:34,743 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:21:34,743 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:34,744 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:34,780 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:34,800 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:34,801 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:34,801 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:34,801 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:34,801 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:34,801 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:21:35,284 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:35,285 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:21:35,285 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:35,285 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:35,285 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:35,285 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:21:35,285 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:21:35,285 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:35,286 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:21:35,616 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34.
[2018-10-03 09:21:35,616 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:35,616 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:35,616 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:35,616 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:35,616 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:35,617 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:35,617 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:35,617 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:35,617 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:35,617 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:35,617 INFO  L423      AbstractCegarLoop]: === Iteration 307 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:35,617 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:35,617 INFO  L82        PathProgramCache]: Analyzing trace with hash 1726110272, now seen corresponding path program 291 times
[2018-10-03 09:21:35,617 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:35,617 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:35,618 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:35,618 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:35,618 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:35,618 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:35,680 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:35,680 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:35,680 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 307 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:35,688 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:21:35,698 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:21:35,698 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:35,699 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:35,748 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:35,770 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:35,770 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:35,770 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:35,770 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:35,770 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:35,770 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:36,255 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:36,256 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:21:36,256 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:36,256 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:36,256 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:36,257 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:21:36,257 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:21:36,257 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:36,257 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:21:36,561 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 30.
[2018-10-03 09:21:36,562 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:21:36,562 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:21:36,562 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19
[2018-10-03 09:21:36,562 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:36,562 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:21:36,562 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:36,562 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:21:36,562 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:36,562 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:36,562 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:36,563 INFO  L423      AbstractCegarLoop]: === Iteration 308 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:36,563 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:36,563 INFO  L82        PathProgramCache]: Analyzing trace with hash -795698626, now seen corresponding path program 292 times
[2018-10-03 09:21:36,563 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:36,563 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:36,563 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:36,563 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:36,563 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:36,564 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:36,641 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:36,642 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:36,642 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 308 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 308 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:36,650 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:21:36,656 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:21:36,656 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:36,657 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:36,688 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:36,709 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:36,710 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:36,710 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:36,710 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:36,710 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:36,710 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states.
[2018-10-03 09:21:37,236 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:37,237 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:21:37,237 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:37,237 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:37,237 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:37,238 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:21:37,238 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:21:37,238 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:37,238 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:21:37,563 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34.
[2018-10-03 09:21:37,563 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:37,563 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:37,563 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:37,563 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:37,563 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:37,564 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:37,564 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:37,564 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:37,564 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:37,564 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:37,564 INFO  L423      AbstractCegarLoop]: === Iteration 309 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:37,564 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:37,564 INFO  L82        PathProgramCache]: Analyzing trace with hash -795696704, now seen corresponding path program 293 times
[2018-10-03 09:21:37,564 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:37,564 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:37,565 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:37,565 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:37,565 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:37,565 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:37,626 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:37,627 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:37,627 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 309 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 309 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:37,635 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:21:37,644 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:21:37,644 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:37,645 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:37,691 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:37,712 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:37,712 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:37,712 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:37,712 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:37,712 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:37,712 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:38,247 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:38,248 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:21:38,248 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:38,248 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:38,248 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:38,249 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:21:38,249 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:21:38,249 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:38,249 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:21:38,577 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 32.
[2018-10-03 09:21:38,578 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:21:38,578 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:21:38,578 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:21:38,578 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:38,578 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:21:38,578 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:38,578 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:21:38,578 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:38,578 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:38,578 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:38,579 INFO  L423      AbstractCegarLoop]: === Iteration 310 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:38,579 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:38,579 INFO  L82        PathProgramCache]: Analyzing trace with hash -793851584, now seen corresponding path program 294 times
[2018-10-03 09:21:38,579 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:38,579 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:38,579 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:38,579 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:38,579 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:38,580 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:38,685 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:38,685 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:38,685 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 310 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 310 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:38,694 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:21:38,708 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:21:38,709 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:38,709 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:38,782 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:38,804 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:38,804 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:38,804 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:38,804 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:38,804 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:38,804 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:21:39,300 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:39,301 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:21:39,301 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:39,301 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:39,301 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:39,302 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:21:39,302 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:21:39,302 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:39,302 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:21:39,633 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 34.
[2018-10-03 09:21:39,633 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:39,634 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:39,634 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:39,634 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:39,634 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:39,634 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:39,634 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:39,634 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:39,634 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:39,634 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:39,634 INFO  L423      AbstractCegarLoop]: === Iteration 311 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:39,634 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:39,635 INFO  L82        PathProgramCache]: Analyzing trace with hash -793849662, now seen corresponding path program 295 times
[2018-10-03 09:21:39,635 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:39,635 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:39,635 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:39,635 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:39,635 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:39,636 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:39,710 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:39,711 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:39,711 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 311 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 311 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:39,718 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:39,723 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:39,724 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:39,757 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:39,778 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:39,778 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:39,778 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:39,778 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:39,778 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:39,778 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:40,257 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:40,258 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:21:40,258 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:40,258 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:40,258 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:40,259 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:21:40,259 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:21:40,259 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:40,259 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:21:40,532 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 28.
[2018-10-03 09:21:40,532 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:21:40,532 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:21:40,532 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 19
[2018-10-03 09:21:40,532 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:40,532 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:21:40,532 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:40,532 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:21:40,533 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:40,533 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:40,533 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:40,533 INFO  L423      AbstractCegarLoop]: === Iteration 312 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:40,533 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:40,533 INFO  L82        PathProgramCache]: Analyzing trace with hash -1890647618, now seen corresponding path program 296 times
[2018-10-03 09:21:40,533 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:40,533 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:40,533 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:40,534 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:40,534 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:40,534 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:40,607 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:40,608 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:40,608 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 312 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 312 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:40,616 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:21:40,622 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:21:40,623 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:40,623 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:40,654 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:40,674 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:40,674 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:40,674 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:40,675 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:40,675 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:40,675 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 11 states.
[2018-10-03 09:21:41,152 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:41,153 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:21:41,153 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:41,153 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:41,153 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:41,153 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:21:41,154 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:21:41,154 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:21:41,154 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:21:41,491 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34.
[2018-10-03 09:21:41,491 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:41,491 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:41,491 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:41,491 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:41,491 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:41,491 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:41,491 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:41,492 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:41,492 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:41,492 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:41,492 INFO  L423      AbstractCegarLoop]: === Iteration 313 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:41,492 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:41,492 INFO  L82        PathProgramCache]: Analyzing trace with hash -1890645696, now seen corresponding path program 297 times
[2018-10-03 09:21:41,492 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:41,492 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:41,492 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:41,493 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:41,493 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:41,493 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:41,664 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:41,664 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:41,664 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 313 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 313 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:41,672 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:21:41,681 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:21:41,681 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:41,682 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:41,705 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:41,726 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:41,726 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:41,727 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:41,727 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:41,727 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:41,727 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:42,192 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:42,193 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:21:42,193 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:42,193 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:42,193 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:42,193 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:21:42,193 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:21:42,193 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:42,194 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:21:42,517 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 32.
[2018-10-03 09:21:42,517 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:21:42,517 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:21:42,518 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:21:42,518 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:42,518 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:21:42,518 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:42,518 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:21:42,518 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:42,518 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:42,518 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:42,518 INFO  L423      AbstractCegarLoop]: === Iteration 314 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:42,518 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:42,518 INFO  L82        PathProgramCache]: Analyzing trace with hash -1888800576, now seen corresponding path program 298 times
[2018-10-03 09:21:42,519 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:42,519 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:42,519 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:42,519 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:42,519 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:42,520 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:42,596 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:42,596 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:42,596 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 314 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 314 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:42,604 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:21:42,610 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:21:42,610 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:42,611 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:42,653 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:42,683 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:42,684 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:42,684 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:42,684 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:42,684 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:42,684 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:21:43,196 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:43,197 INFO  L93              Difference]: Finished difference Result 45 states and 64 transitions.
[2018-10-03 09:21:43,197 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:43,197 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:43,197 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:43,198 INFO  L225             Difference]: With dead ends: 45
[2018-10-03 09:21:43,198 INFO  L226             Difference]: Without dead ends: 43
[2018-10-03 09:21:43,198 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:43,198 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-10-03 09:21:43,532 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34.
[2018-10-03 09:21:43,532 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:43,532 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:43,533 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:43,533 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:43,533 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:43,533 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:43,533 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:43,533 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:43,533 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:43,533 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:43,533 INFO  L423      AbstractCegarLoop]: === Iteration 315 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:43,533 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:43,533 INFO  L82        PathProgramCache]: Analyzing trace with hash -1888798654, now seen corresponding path program 299 times
[2018-10-03 09:21:43,534 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:43,534 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:43,534 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:43,534 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:43,534 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:43,535 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:43,610 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:43,610 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:43,610 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 315 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 315 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:43,619 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:21:43,629 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:21:43,629 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:43,630 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:43,664 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:43,687 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:43,687 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:43,687 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:43,687 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:43,687 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:43,687 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:44,142 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:44,143 INFO  L93              Difference]: Finished difference Result 43 states and 61 transitions.
[2018-10-03 09:21:44,143 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:44,143 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:44,143 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:44,144 INFO  L225             Difference]: With dead ends: 43
[2018-10-03 09:21:44,144 INFO  L226             Difference]: Without dead ends: 41
[2018-10-03 09:21:44,144 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:44,144 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-10-03 09:21:44,455 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 30.
[2018-10-03 09:21:44,455 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:21:44,455 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:21:44,455 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19
[2018-10-03 09:21:44,455 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:44,455 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:21:44,455 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:44,456 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:21:44,456 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:44,456 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:44,456 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:44,456 INFO  L423      AbstractCegarLoop]: === Iteration 316 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:44,456 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:44,456 INFO  L82        PathProgramCache]: Analyzing trace with hash -115640256, now seen corresponding path program 300 times
[2018-10-03 09:21:44,456 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:44,456 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:44,457 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:44,457 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:44,457 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:44,457 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:44,526 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:44,526 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:44,526 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 316 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 316 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:44,534 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:21:44,543 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:21:44,543 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:44,544 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:44,595 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:44,617 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:44,617 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:44,617 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:44,617 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:44,617 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:44,617 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states.
[2018-10-03 09:21:45,027 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:45,028 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:21:45,028 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:45,028 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:45,028 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:45,029 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:21:45,029 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:21:45,029 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:45,029 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:21:45,364 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 34.
[2018-10-03 09:21:45,365 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:45,365 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:45,365 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:45,365 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:45,365 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:45,365 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:45,365 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:45,365 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:45,365 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:45,366 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:45,366 INFO  L423      AbstractCegarLoop]: === Iteration 317 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:45,366 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:45,366 INFO  L82        PathProgramCache]: Analyzing trace with hash -115638334, now seen corresponding path program 301 times
[2018-10-03 09:21:45,366 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:45,366 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:45,367 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:45,367 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:45,367 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:45,367 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:45,442 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:45,442 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:45,442 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 317 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 317 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:45,449 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:45,454 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:45,455 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:45,486 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:45,508 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:45,508 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:45,508 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:45,508 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:45,508 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:45,508 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:45,947 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:45,948 INFO  L93              Difference]: Finished difference Result 41 states and 58 transitions.
[2018-10-03 09:21:45,948 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:45,948 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:45,948 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:45,948 INFO  L225             Difference]: With dead ends: 41
[2018-10-03 09:21:45,948 INFO  L226             Difference]: Without dead ends: 39
[2018-10-03 09:21:45,949 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:45,949 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-10-03 09:21:46,300 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32.
[2018-10-03 09:21:46,300 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:21:46,300 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:21:46,300 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:21:46,301 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:46,301 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:21:46,301 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:46,301 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:21:46,301 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:46,301 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:46,301 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:46,301 INFO  L423      AbstractCegarLoop]: === Iteration 318 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:46,301 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:46,301 INFO  L82        PathProgramCache]: Analyzing trace with hash -113793214, now seen corresponding path program 302 times
[2018-10-03 09:21:46,301 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:46,301 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:46,302 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:46,302 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:46,302 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:46,303 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:46,367 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:46,367 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:46,367 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 318 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 318 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:46,376 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:21:46,382 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:21:46,383 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:46,383 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:46,426 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:46,447 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:46,447 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:46,447 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:46,447 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:46,447 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:46,447 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:21:46,855 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:46,856 INFO  L93              Difference]: Finished difference Result 39 states and 55 transitions.
[2018-10-03 09:21:46,856 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:46,856 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:46,856 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:46,856 INFO  L225             Difference]: With dead ends: 39
[2018-10-03 09:21:46,857 INFO  L226             Difference]: Without dead ends: 37
[2018-10-03 09:21:46,857 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:46,857 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-10-03 09:21:47,192 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 34.
[2018-10-03 09:21:47,192 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:47,192 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:47,192 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:47,192 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:47,192 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:47,192 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:47,192 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:47,193 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:47,193 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:47,193 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:21:47,193 INFO  L423      AbstractCegarLoop]: === Iteration 319 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:47,193 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:47,193 INFO  L82        PathProgramCache]: Analyzing trace with hash -113791292, now seen corresponding path program 303 times
[2018-10-03 09:21:47,193 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:47,193 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:47,194 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:47,194 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:47,194 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:47,195 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:47,291 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:47,291 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:47,291 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 319 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 319 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:47,300 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:21:47,313 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:21:47,314 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:47,314 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:47,357 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:47,378 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:47,379 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:47,379 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:47,379 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:47,379 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:47,379 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:47,770 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:47,770 INFO  L93              Difference]: Finished difference Result 38 states and 54 transitions.
[2018-10-03 09:21:47,770 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:47,770 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:47,770 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:47,771 INFO  L225             Difference]: With dead ends: 38
[2018-10-03 09:21:47,771 INFO  L226             Difference]: Without dead ends: 36
[2018-10-03 09:21:47,771 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:47,771 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2018-10-03 09:21:47,997 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 22.
[2018-10-03 09:21:47,998 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-10-03 09:21:47,998 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 31 transitions.
[2018-10-03 09:21:47,998 INFO  L78                 Accepts]: Start accepts. Automaton has 22 states and 31 transitions. Word has length 19
[2018-10-03 09:21:47,998 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:47,998 INFO  L480      AbstractCegarLoop]: Abstraction has 22 states and 31 transitions.
[2018-10-03 09:21:47,998 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:47,998 INFO  L276                IsEmpty]: Start isEmpty. Operand 22 states and 31 transitions.
[2018-10-03 09:21:47,998 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:47,998 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:47,998 INFO  L375         BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1]
[2018-10-03 09:21:47,999 INFO  L423      AbstractCegarLoop]: === Iteration 320 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:47,999 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:47,999 INFO  L82        PathProgramCache]: Analyzing trace with hash 330139066, now seen corresponding path program 304 times
[2018-10-03 09:21:47,999 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:47,999 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:47,999 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:47,999 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:48,000 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:48,001 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:48,080 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:48,081 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:48,081 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 320 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 320 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:48,091 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:21:48,118 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:21:48,118 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:48,119 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:48,234 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:48,256 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:48,256 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:48,256 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:48,256 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:48,256 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:48,256 INFO  L87              Difference]: Start difference. First operand 22 states and 31 transitions. Second operand 11 states.
[2018-10-03 09:21:49,052 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:49,052 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:21:49,052 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:49,052 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:49,052 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:49,053 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:21:49,053 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:21:49,053 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:49,053 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:21:49,436 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34.
[2018-10-03 09:21:49,436 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:49,436 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:49,436 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:49,436 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:49,436 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:49,436 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:49,437 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:49,437 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:49,437 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:49,437 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:21:49,437 INFO  L423      AbstractCegarLoop]: === Iteration 321 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:49,437 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:49,437 INFO  L82        PathProgramCache]: Analyzing trace with hash 330140988, now seen corresponding path program 305 times
[2018-10-03 09:21:49,437 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:49,437 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:49,438 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:49,438 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:49,438 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:49,439 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:49,503 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:49,503 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:49,503 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 321 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 321 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:49,511 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:21:49,522 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:21:49,523 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:49,524 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:49,554 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:49,574 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:49,574 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:49,574 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:49,575 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:49,575 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:49,575 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:50,344 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:50,345 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:21:50,345 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:50,345 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:50,345 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:50,345 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:21:50,345 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:21:50,345 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:21:50,346 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:21:50,749 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32.
[2018-10-03 09:21:50,750 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:21:50,750 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:21:50,750 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:21:50,750 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:50,750 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:21:50,750 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:50,750 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:21:50,750 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:50,750 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:50,751 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:21:50,751 INFO  L423      AbstractCegarLoop]: === Iteration 322 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:50,751 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:50,751 INFO  L82        PathProgramCache]: Analyzing trace with hash 331986108, now seen corresponding path program 306 times
[2018-10-03 09:21:50,751 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:50,751 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:50,751 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:50,752 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:50,752 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:50,752 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:50,826 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:50,827 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:50,827 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 322 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 322 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:50,834 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:21:50,845 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:21:50,845 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:50,846 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:50,878 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:50,899 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:50,899 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:50,900 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:50,900 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:50,900 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:50,900 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:21:51,664 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:51,665 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:21:51,665 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:51,665 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:51,665 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:51,666 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:21:51,666 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:21:51,666 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:51,666 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:21:52,042 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34.
[2018-10-03 09:21:52,042 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:52,042 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:52,043 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:52,043 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:52,043 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:52,043 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:52,043 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:52,043 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:52,043 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:52,043 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:52,043 INFO  L423      AbstractCegarLoop]: === Iteration 323 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:52,043 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:52,043 INFO  L82        PathProgramCache]: Analyzing trace with hash 331988030, now seen corresponding path program 307 times
[2018-10-03 09:21:52,044 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:52,044 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:52,044 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:52,044 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:52,044 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:52,045 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:52,119 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:52,119 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:52,119 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 323 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 323 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:52,126 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:52,132 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:52,133 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:52,164 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:52,186 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:52,186 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:52,186 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:52,186 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:52,186 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:52,186 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:52,905 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:52,906 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:21:52,906 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:52,906 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:52,906 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:52,907 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:21:52,907 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:21:52,907 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:21:52,907 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:21:53,258 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 30.
[2018-10-03 09:21:53,258 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:21:53,259 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:21:53,259 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19
[2018-10-03 09:21:53,259 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:53,259 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:21:53,259 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:53,259 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:21:53,259 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:53,259 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:53,259 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:21:53,259 INFO  L423      AbstractCegarLoop]: === Iteration 324 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:53,259 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:53,260 INFO  L82        PathProgramCache]: Analyzing trace with hash 2105146428, now seen corresponding path program 308 times
[2018-10-03 09:21:53,260 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:53,260 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:53,260 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:53,260 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:21:53,260 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:53,261 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:53,333 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:53,334 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:53,334 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 324 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 324 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:53,342 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:21:53,347 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:21:53,347 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:53,348 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:53,395 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:53,415 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:53,415 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:53,415 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:53,415 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:53,415 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:53,415 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states.
[2018-10-03 09:21:54,186 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:54,186 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:21:54,186 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:54,186 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:54,186 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:54,187 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:21:54,187 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:21:54,187 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:54,187 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:21:54,651 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34.
[2018-10-03 09:21:54,651 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:54,651 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:54,651 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:54,651 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:54,652 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:54,652 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:54,652 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:54,652 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:54,652 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:54,652 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:54,652 INFO  L423      AbstractCegarLoop]: === Iteration 325 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:54,652 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:54,652 INFO  L82        PathProgramCache]: Analyzing trace with hash 2105148350, now seen corresponding path program 309 times
[2018-10-03 09:21:54,652 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:54,652 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:54,653 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:54,653 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:54,653 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:54,654 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:54,719 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:54,719 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:54,719 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 325 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 325 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:54,728 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:21:54,737 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:21:54,737 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:54,738 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:54,769 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:54,789 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:54,789 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:54,789 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:54,789 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:54,789 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:54,790 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:55,558 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:55,559 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:21:55,559 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:55,559 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:55,559 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:55,559 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:21:55,560 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:21:55,560 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:21:55,560 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:21:55,965 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32.
[2018-10-03 09:21:55,965 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:21:55,965 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:21:55,965 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:21:55,965 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:55,965 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:21:55,965 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:55,965 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:21:55,966 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:55,966 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:55,966 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:55,966 INFO  L423      AbstractCegarLoop]: === Iteration 326 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:55,966 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:55,966 INFO  L82        PathProgramCache]: Analyzing trace with hash 2106993470, now seen corresponding path program 310 times
[2018-10-03 09:21:55,966 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:55,966 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:55,967 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:55,967 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:55,967 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:55,967 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:56,035 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:56,035 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:56,035 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 326 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 326 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:56,042 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:21:56,049 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:21:56,050 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:56,050 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:56,091 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:56,112 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:56,112 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:56,113 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:56,113 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:56,113 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:56,113 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:21:56,880 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:56,881 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:21:56,881 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:56,881 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:56,881 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:56,882 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:21:56,882 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:21:56,882 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:21:56,882 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:21:57,260 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34.
[2018-10-03 09:21:57,261 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:57,261 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:57,261 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:57,261 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:57,261 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:57,261 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:57,261 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:57,261 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:57,261 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:57,261 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:21:57,262 INFO  L423      AbstractCegarLoop]: === Iteration 327 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:57,262 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:57,262 INFO  L82        PathProgramCache]: Analyzing trace with hash 2106995392, now seen corresponding path program 311 times
[2018-10-03 09:21:57,262 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:57,262 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:57,262 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:57,262 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:57,262 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:57,263 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:57,338 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:57,338 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:57,338 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 327 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 327 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:57,346 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:21:57,356 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:21:57,356 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:57,357 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:57,631 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:57,652 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:57,652 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:57,652 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:57,653 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:57,653 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:57,653 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:21:58,371 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:58,372 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:21:58,372 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:58,372 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:58,372 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:58,373 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:21:58,373 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:21:58,373 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time 0.0s impTime 9
[2018-10-03 09:21:58,373 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:21:58,697 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 28.
[2018-10-03 09:21:58,697 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:21:58,697 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:21:58,697 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 19
[2018-10-03 09:21:58,697 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:58,697 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:21:58,697 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:58,697 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:21:58,697 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:58,697 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:58,698 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:21:58,698 INFO  L423      AbstractCegarLoop]: === Iteration 328 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:58,698 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:58,698 INFO  L82        PathProgramCache]: Analyzing trace with hash 1010197436, now seen corresponding path program 312 times
[2018-10-03 09:21:58,698 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:58,698 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:58,698 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:58,698 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:58,698 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:58,699 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:21:58,761 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:58,761 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:21:58,761 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 328 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 328 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:21:58,768 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:21:58,778 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:21:58,779 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:21:58,779 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:21:58,822 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:21:58,843 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:21:58,843 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:21:58,843 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:21:58,844 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:21:58,844 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:21:58,844 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 11 states.
[2018-10-03 09:21:59,560 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:21:59,561 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:21:59,561 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:21:59,561 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:21:59,561 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:21:59,562 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:21:59,562 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:21:59,562 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:21:59,562 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:21:59,945 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34.
[2018-10-03 09:21:59,945 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:21:59,945 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:21:59,946 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:21:59,946 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:21:59,946 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:21:59,946 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:21:59,946 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:21:59,946 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:21:59,946 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:21:59,946 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:21:59,946 INFO  L423      AbstractCegarLoop]: === Iteration 329 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:21:59,946 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:21:59,946 INFO  L82        PathProgramCache]: Analyzing trace with hash 1010199358, now seen corresponding path program 313 times
[2018-10-03 09:21:59,947 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:21:59,947 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:21:59,947 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:59,947 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:21:59,947 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:21:59,948 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:00,012 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:00,013 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:00,013 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 329 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 329 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:00,021 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:22:00,026 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:00,026 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:00,057 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:00,078 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:00,078 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:00,078 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:00,079 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:00,079 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:00,079 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:00,769 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:00,770 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:22:00,770 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:00,770 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:00,770 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:00,771 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:22:00,771 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:22:00,771 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:22:00,771 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:22:01,137 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32.
[2018-10-03 09:22:01,137 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:22:01,137 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:22:01,137 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:22:01,138 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:01,138 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:22:01,138 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:01,138 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:22:01,138 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:01,138 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:01,138 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:01,138 INFO  L423      AbstractCegarLoop]: === Iteration 330 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:01,138 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:01,138 INFO  L82        PathProgramCache]: Analyzing trace with hash 1012044478, now seen corresponding path program 314 times
[2018-10-03 09:22:01,138 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:01,138 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:01,139 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:01,139 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:22:01,139 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:01,140 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:01,199 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:01,199 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:01,199 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 330 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 330 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:01,207 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:22:01,213 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:22:01,213 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:01,214 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:01,245 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:01,266 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:01,266 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:01,266 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:01,266 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:01,266 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:01,267 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:22:01,995 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:01,996 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:22:01,996 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:01,996 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:01,996 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:01,997 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:22:01,997 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:22:01,997 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:22:01,997 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:22:02,379 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34.
[2018-10-03 09:22:02,379 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:02,379 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:02,379 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:02,379 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:02,379 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:02,380 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:02,380 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:02,380 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:02,380 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:02,380 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:02,380 INFO  L423      AbstractCegarLoop]: === Iteration 331 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:02,380 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:02,380 INFO  L82        PathProgramCache]: Analyzing trace with hash 1012046400, now seen corresponding path program 315 times
[2018-10-03 09:22:02,380 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:02,380 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:02,381 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:02,381 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:02,381 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:02,381 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:02,443 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:02,443 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:02,443 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 331 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 331 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:02,452 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:22:02,461 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:22:02,462 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:02,462 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:02,497 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:02,519 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:02,519 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:02,519 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:02,519 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:02,519 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:02,519 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:03,223 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:03,223 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:22:03,223 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:03,223 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:03,223 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:03,223 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:22:03,223 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:22:03,224 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:22:03,224 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:22:03,576 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 30.
[2018-10-03 09:22:03,576 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:22:03,577 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:22:03,577 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19
[2018-10-03 09:22:03,577 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:03,577 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:22:03,577 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:03,577 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:22:03,577 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:03,577 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:03,577 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:03,577 INFO  L423      AbstractCegarLoop]: === Iteration 332 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:03,577 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:03,578 INFO  L82        PathProgramCache]: Analyzing trace with hash -1509762498, now seen corresponding path program 316 times
[2018-10-03 09:22:03,578 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:03,578 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:03,578 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:03,578 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:03,578 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:03,579 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:03,659 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:03,660 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:03,660 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 332 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 332 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:03,669 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:22:03,675 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:22:03,676 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:03,676 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:03,720 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:03,741 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:03,741 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:03,742 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:03,742 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:03,742 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:03,742 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states.
[2018-10-03 09:22:04,413 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:04,414 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:22:04,414 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:04,414 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:04,414 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:04,414 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:22:04,414 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:22:04,414 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:04,415 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:22:04,801 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34.
[2018-10-03 09:22:04,802 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:04,802 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:04,802 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:04,802 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:04,802 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:04,802 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:04,802 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:04,802 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:04,802 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:04,802 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:04,802 INFO  L423      AbstractCegarLoop]: === Iteration 333 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:04,803 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:04,803 INFO  L82        PathProgramCache]: Analyzing trace with hash -1509760576, now seen corresponding path program 317 times
[2018-10-03 09:22:04,803 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:04,803 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:04,803 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:04,803 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:04,803 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:04,804 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:04,880 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:04,880 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:04,881 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 333 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 333 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:04,888 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:22:04,897 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:22:04,897 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:04,898 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:04,955 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:04,975 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:04,975 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:04,975 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:04,976 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:04,976 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:04,976 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:05,628 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:05,629 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:22:05,629 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:05,629 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:05,629 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:05,630 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:22:05,630 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:22:05,630 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:05,630 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:22:06,004 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32.
[2018-10-03 09:22:06,004 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:22:06,004 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:22:06,004 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:22:06,004 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:06,004 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:22:06,004 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:06,004 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:22:06,005 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:06,005 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:06,005 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:06,005 INFO  L423      AbstractCegarLoop]: === Iteration 334 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:06,005 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:06,005 INFO  L82        PathProgramCache]: Analyzing trace with hash -1507915456, now seen corresponding path program 318 times
[2018-10-03 09:22:06,005 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:06,005 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:06,005 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:06,006 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:06,006 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:06,006 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:06,067 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:06,067 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:06,067 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 334 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 334 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:06,075 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:22:06,085 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:22:06,085 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:06,086 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:06,133 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:06,154 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:06,154 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:06,154 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:06,154 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:06,154 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:06,154 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:22:06,785 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:06,786 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:22:06,786 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:06,786 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:06,786 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:06,787 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:22:06,787 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:22:06,787 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:06,787 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:22:07,167 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34.
[2018-10-03 09:22:07,167 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:07,167 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:07,167 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:07,167 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:07,167 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:07,167 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:07,167 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:07,168 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:07,168 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:07,168 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:07,168 INFO  L423      AbstractCegarLoop]: === Iteration 335 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:07,168 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:07,168 INFO  L82        PathProgramCache]: Analyzing trace with hash -1507913534, now seen corresponding path program 319 times
[2018-10-03 09:22:07,168 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:07,168 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:07,168 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:07,169 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:07,169 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:07,169 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:07,249 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:07,249 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:07,249 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 335 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 335 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:07,257 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:22:07,262 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:07,263 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:07,308 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:07,329 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:07,330 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:07,330 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:07,330 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:07,330 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:07,330 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:07,946 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:07,947 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:22:07,947 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:07,947 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:07,947 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:07,948 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:22:07,948 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:22:07,948 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:07,948 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:22:08,241 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 26.
[2018-10-03 09:22:08,242 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-10-03 09:22:08,242 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 37 transitions.
[2018-10-03 09:22:08,242 INFO  L78                 Accepts]: Start accepts. Automaton has 26 states and 37 transitions. Word has length 19
[2018-10-03 09:22:08,242 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:08,242 INFO  L480      AbstractCegarLoop]: Abstraction has 26 states and 37 transitions.
[2018-10-03 09:22:08,242 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:08,242 INFO  L276                IsEmpty]: Start isEmpty. Operand 26 states and 37 transitions.
[2018-10-03 09:22:08,242 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:08,242 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:08,242 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:22:08,243 INFO  L423      AbstractCegarLoop]: === Iteration 336 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:08,243 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:08,243 INFO  L82        PathProgramCache]: Analyzing trace with hash 1031203644, now seen corresponding path program 320 times
[2018-10-03 09:22:08,243 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:08,243 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:08,243 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:08,243 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:22:08,243 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:08,244 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:08,320 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:08,320 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:08,320 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 336 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 336 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:08,328 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:22:08,342 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:22:08,343 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:08,343 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:08,389 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:08,408 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:08,408 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:08,408 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:08,409 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:08,409 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:08,409 INFO  L87              Difference]: Start difference. First operand 26 states and 37 transitions. Second operand 11 states.
[2018-10-03 09:22:09,199 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:09,200 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:22:09,200 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:09,200 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:09,200 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:09,201 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:22:09,201 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:22:09,201 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:09,202 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:22:09,608 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34.
[2018-10-03 09:22:09,608 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:09,608 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:09,609 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:09,609 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:09,609 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:09,609 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:09,609 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:09,609 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:09,609 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:09,609 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:09,609 INFO  L423      AbstractCegarLoop]: === Iteration 337 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:09,609 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:09,609 INFO  L82        PathProgramCache]: Analyzing trace with hash 1031205566, now seen corresponding path program 321 times
[2018-10-03 09:22:09,609 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:09,610 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:09,610 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:09,610 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:09,610 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:09,611 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:09,728 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:09,728 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:09,728 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 337 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 337 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:09,736 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:22:09,746 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:22:09,746 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:09,747 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:09,793 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:09,814 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:09,815 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:09,815 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:09,815 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:09,815 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:09,815 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:10,626 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:10,627 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:22:10,627 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:10,627 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:10,627 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:10,628 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:22:10,628 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:22:10,628 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:10,628 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:22:11,009 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32.
[2018-10-03 09:22:11,009 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:22:11,009 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:22:11,009 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:22:11,009 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:11,009 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:22:11,009 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:11,009 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:22:11,010 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:11,010 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:11,010 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:11,010 INFO  L423      AbstractCegarLoop]: === Iteration 338 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:11,010 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:11,010 INFO  L82        PathProgramCache]: Analyzing trace with hash 1033050686, now seen corresponding path program 322 times
[2018-10-03 09:22:11,010 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:11,010 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:11,010 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:11,011 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:11,011 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:11,011 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:11,072 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:11,073 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:11,073 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 338 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 338 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:11,081 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:22:11,086 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:22:11,087 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:11,088 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:11,134 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:11,155 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:11,155 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:11,155 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:11,155 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:11,155 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:11,156 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:22:11,941 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:11,942 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:22:11,942 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:11,942 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:11,942 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:11,943 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:22:11,943 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:22:11,943 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:11,943 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:22:12,347 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34.
[2018-10-03 09:22:12,347 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:12,347 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:12,348 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:12,348 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:12,348 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:12,348 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:12,348 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:12,348 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:12,348 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:12,348 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:12,348 INFO  L423      AbstractCegarLoop]: === Iteration 339 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:12,348 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:12,348 INFO  L82        PathProgramCache]: Analyzing trace with hash 1033052608, now seen corresponding path program 323 times
[2018-10-03 09:22:12,348 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:12,349 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:12,349 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:12,349 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:12,349 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:12,350 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:12,418 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:12,418 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:12,418 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 339 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 339 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:12,426 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:22:12,435 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:22:12,436 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:12,436 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:12,470 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:12,491 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:12,491 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:12,491 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:12,491 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:12,491 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:12,491 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:13,219 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:13,220 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:22:13,220 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:13,220 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:13,220 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:13,221 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:22:13,221 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:22:13,221 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:22:13,221 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:22:13,584 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 30.
[2018-10-03 09:22:13,585 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:22:13,585 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:22:13,585 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19
[2018-10-03 09:22:13,585 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:13,585 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:22:13,585 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:13,585 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:22:13,585 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:13,585 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:13,585 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:13,585 INFO  L423      AbstractCegarLoop]: === Iteration 340 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:13,586 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:13,586 INFO  L82        PathProgramCache]: Analyzing trace with hash -1488756290, now seen corresponding path program 324 times
[2018-10-03 09:22:13,586 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:13,586 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:13,586 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:13,586 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:13,586 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:13,587 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:13,647 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:13,648 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:13,648 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 340 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 340 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:13,656 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:22:13,665 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:22:13,666 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:13,666 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:13,698 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:13,718 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:13,718 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:13,718 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:13,719 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:13,719 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:13,719 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states.
[2018-10-03 09:22:14,538 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:14,538 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:22:14,538 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:14,538 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:14,538 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:14,538 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:22:14,539 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:22:14,539 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:22:14,539 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:22:14,972 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 34.
[2018-10-03 09:22:14,972 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:14,972 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:14,973 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:14,973 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:14,973 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:14,973 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:14,973 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:14,973 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:14,973 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:14,973 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:14,973 INFO  L423      AbstractCegarLoop]: === Iteration 341 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:14,973 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:14,973 INFO  L82        PathProgramCache]: Analyzing trace with hash -1488754368, now seen corresponding path program 325 times
[2018-10-03 09:22:14,974 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:14,974 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:14,974 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:14,974 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:14,974 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:14,975 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:15,056 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:15,056 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:15,056 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 341 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 341 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:15,064 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:22:15,080 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:15,080 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:15,114 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:15,135 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:15,135 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:15,135 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:15,135 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:15,135 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:15,135 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:15,962 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:15,963 INFO  L93              Difference]: Finished difference Result 61 states and 88 transitions.
[2018-10-03 09:22:15,963 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:15,963 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:15,963 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:15,964 INFO  L225             Difference]: With dead ends: 61
[2018-10-03 09:22:15,964 INFO  L226             Difference]: Without dead ends: 59
[2018-10-03 09:22:15,964 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:15,964 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-10-03 09:22:16,345 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 32.
[2018-10-03 09:22:16,345 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:22:16,345 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:22:16,345 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:22:16,346 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:16,346 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:22:16,346 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:16,346 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:22:16,346 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:16,346 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:16,346 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:16,346 INFO  L423      AbstractCegarLoop]: === Iteration 342 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:16,346 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:16,346 INFO  L82        PathProgramCache]: Analyzing trace with hash -1486909248, now seen corresponding path program 326 times
[2018-10-03 09:22:16,346 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:16,347 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:16,347 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:16,347 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:22:16,347 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:16,348 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:16,415 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:16,415 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:16,415 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 342 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 342 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:16,423 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:22:16,429 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:22:16,430 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:16,430 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:16,466 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:16,487 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:16,487 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:16,487 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:16,487 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:16,487 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:16,488 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:22:17,256 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:17,257 INFO  L93              Difference]: Finished difference Result 59 states and 85 transitions.
[2018-10-03 09:22:17,257 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:17,257 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:17,257 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:17,257 INFO  L225             Difference]: With dead ends: 59
[2018-10-03 09:22:17,257 INFO  L226             Difference]: Without dead ends: 57
[2018-10-03 09:22:17,257 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:22:17,258 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-10-03 09:22:17,647 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 34.
[2018-10-03 09:22:17,648 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:17,648 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:17,648 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:17,648 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:17,648 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:17,648 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:17,648 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:17,648 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:17,648 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:17,648 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:17,649 INFO  L423      AbstractCegarLoop]: === Iteration 343 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:17,649 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:17,649 INFO  L82        PathProgramCache]: Analyzing trace with hash -1486907326, now seen corresponding path program 327 times
[2018-10-03 09:22:17,649 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:17,649 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:17,649 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:17,650 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:17,650 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:17,651 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:17,724 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:17,724 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:17,724 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 343 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 343 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:17,732 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:22:17,742 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:22:17,742 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:17,743 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:17,771 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:17,791 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:17,791 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:17,791 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:17,791 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:17,792 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:17,792 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:18,545 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:18,546 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:22:18,546 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:18,546 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:18,546 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:18,546 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:22:18,546 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:22:18,546 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:22:18,546 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:22:18,880 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 28.
[2018-10-03 09:22:18,880 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:22:18,880 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:22:18,880 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 19
[2018-10-03 09:22:18,880 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:18,880 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:22:18,881 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:18,881 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:22:18,881 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:18,881 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:18,881 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:18,881 INFO  L423      AbstractCegarLoop]: === Iteration 344 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:18,881 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:18,881 INFO  L82        PathProgramCache]: Analyzing trace with hash 1711262014, now seen corresponding path program 328 times
[2018-10-03 09:22:18,881 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:18,881 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:18,882 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:18,882 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:18,882 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:18,882 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:18,954 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:18,954 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:18,954 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 344 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 344 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:18,962 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:22:18,972 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:22:18,972 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:18,973 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:19,012 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:19,034 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:19,034 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:19,034 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:19,034 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:19,034 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:19,034 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 11 states.
[2018-10-03 09:22:19,771 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:19,772 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:22:19,772 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:19,772 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:19,772 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:19,772 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:22:19,772 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:22:19,772 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:19,773 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:22:20,172 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34.
[2018-10-03 09:22:20,172 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:20,173 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:20,173 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:20,173 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:20,173 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:20,173 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:20,173 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:20,173 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:20,173 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:20,173 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:20,173 INFO  L423      AbstractCegarLoop]: === Iteration 345 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:20,173 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:20,173 INFO  L82        PathProgramCache]: Analyzing trace with hash 1711263936, now seen corresponding path program 329 times
[2018-10-03 09:22:20,174 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:20,174 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:20,174 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:20,174 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:20,174 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:20,175 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:20,308 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:20,308 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:20,309 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 345 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 345 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:20,316 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:22:20,325 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:22:20,325 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:20,325 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:20,348 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:20,368 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:20,368 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:20,368 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:20,369 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:20,369 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:20,369 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:21,072 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:21,073 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:22:21,073 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:21,073 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:21,073 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:21,073 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:22:21,073 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:22:21,073 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:21,073 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:22:21,458 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 32.
[2018-10-03 09:22:21,459 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:22:21,459 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:22:21,459 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:22:21,459 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:21,459 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:22:21,459 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:21,459 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:22:21,459 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:21,459 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:21,459 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:21,459 INFO  L423      AbstractCegarLoop]: === Iteration 346 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:21,460 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:21,460 INFO  L82        PathProgramCache]: Analyzing trace with hash 1713109056, now seen corresponding path program 330 times
[2018-10-03 09:22:21,460 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:21,460 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:21,460 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:21,460 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:21,460 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:21,461 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:21,581 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:21,581 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:21,581 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 346 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 346 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:21,592 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:22:21,602 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:22:21,602 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:21,603 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:21,626 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:21,647 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:21,648 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:21,648 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:21,648 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:21,648 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:21,648 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:22:22,388 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:22,389 INFO  L93              Difference]: Finished difference Result 57 states and 82 transitions.
[2018-10-03 09:22:22,389 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:22,389 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:22,389 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:22,389 INFO  L225             Difference]: With dead ends: 57
[2018-10-03 09:22:22,389 INFO  L226             Difference]: Without dead ends: 55
[2018-10-03 09:22:22,390 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:22,390 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-10-03 09:22:22,786 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 34.
[2018-10-03 09:22:22,787 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:22,787 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:22,787 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:22,787 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:22,787 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:22,787 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:22,787 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:22,787 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:22,787 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:22,787 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:22,788 INFO  L423      AbstractCegarLoop]: === Iteration 347 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:22,788 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:22,788 INFO  L82        PathProgramCache]: Analyzing trace with hash 1713110978, now seen corresponding path program 331 times
[2018-10-03 09:22:22,788 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:22,788 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:22,788 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:22,788 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:22,788 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:22,789 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:22,864 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:22,865 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:22,865 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 347 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 347 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:22,872 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:22:22,878 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:22,878 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:22,925 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:22,946 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:22,946 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:22,946 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:22,946 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:22,946 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:22,946 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:23,653 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:23,654 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:22:23,654 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:23,654 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:23,654 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:23,655 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:22:23,655 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:22:23,655 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:23,655 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:22:24,060 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 30.
[2018-10-03 09:22:24,060 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:22:24,060 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:22:24,060 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19
[2018-10-03 09:22:24,060 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:24,060 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:22:24,060 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:24,060 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:22:24,060 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:24,060 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:24,061 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:24,061 INFO  L423      AbstractCegarLoop]: === Iteration 348 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:24,061 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:24,061 INFO  L82        PathProgramCache]: Analyzing trace with hash -808697920, now seen corresponding path program 332 times
[2018-10-03 09:22:24,061 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:24,061 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:24,061 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:24,061 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:22:24,061 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:24,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:24,132 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:24,133 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:24,133 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 348 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 348 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:24,141 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:22:24,146 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:22:24,146 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:24,147 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:24,193 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:24,214 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:24,214 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:24,215 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:24,215 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:24,215 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:24,215 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states.
[2018-10-03 09:22:24,909 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:24,910 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:22:24,910 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:24,910 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:24,910 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:24,910 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:22:24,910 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:22:24,910 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:24,910 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:22:25,308 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34.
[2018-10-03 09:22:25,308 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:25,308 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:25,308 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:25,308 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:25,308 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:25,309 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:25,309 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:25,309 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:25,309 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:25,309 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:25,309 INFO  L423      AbstractCegarLoop]: === Iteration 349 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:25,309 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:25,309 INFO  L82        PathProgramCache]: Analyzing trace with hash -808695998, now seen corresponding path program 333 times
[2018-10-03 09:22:25,309 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:25,309 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:25,310 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:25,310 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:25,310 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:25,310 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:25,370 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:25,371 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:25,371 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 349 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 349 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:25,378 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:22:25,388 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:22:25,388 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:25,389 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:25,437 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:25,458 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:25,458 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:25,458 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:25,458 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:25,458 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:25,459 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:26,154 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:26,155 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:22:26,155 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:26,155 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:26,155 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:26,156 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:22:26,156 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:22:26,156 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:26,156 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:22:26,550 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32.
[2018-10-03 09:22:26,551 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:22:26,551 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:22:26,551 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:22:26,551 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:26,551 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:22:26,551 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:26,551 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:22:26,551 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:26,551 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:26,551 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:26,552 INFO  L423      AbstractCegarLoop]: === Iteration 350 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:26,552 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:26,552 INFO  L82        PathProgramCache]: Analyzing trace with hash -806850878, now seen corresponding path program 334 times
[2018-10-03 09:22:26,552 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:26,552 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:26,552 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:26,552 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:26,552 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:26,553 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:26,656 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:26,656 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:26,657 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 350 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 350 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:26,664 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:22:26,669 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:22:26,670 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:26,670 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:26,693 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:26,715 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:26,715 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:26,715 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:26,715 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:26,715 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:26,715 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:22:27,372 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:27,373 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:22:27,373 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:27,373 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:27,373 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:27,374 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:22:27,374 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:22:27,374 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:27,374 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:22:27,772 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34.
[2018-10-03 09:22:27,772 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:27,772 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:27,772 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:27,772 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:27,772 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:27,772 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:27,773 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:27,773 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:27,773 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:27,773 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:22:27,773 INFO  L423      AbstractCegarLoop]: === Iteration 351 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:27,773 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:27,773 INFO  L82        PathProgramCache]: Analyzing trace with hash -806848956, now seen corresponding path program 335 times
[2018-10-03 09:22:27,773 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:27,773 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:27,774 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:27,774 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:27,774 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:27,774 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:27,961 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:27,962 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:27,962 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 351 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 351 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:27,969 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:22:27,977 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:22:27,977 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:27,978 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:28,002 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:28,023 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:28,024 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:28,024 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:28,024 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:28,024 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:28,024 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:28,644 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:28,645 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:22:28,645 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:28,645 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:28,645 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:28,646 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:22:28,646 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:22:28,646 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time 0.1s impTime 9
[2018-10-03 09:22:28,646 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:22:28,915 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 24.
[2018-10-03 09:22:28,916 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-10-03 09:22:28,916 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 34 transitions.
[2018-10-03 09:22:28,916 INFO  L78                 Accepts]: Start accepts. Automaton has 24 states and 34 transitions. Word has length 19
[2018-10-03 09:22:28,916 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:28,916 INFO  L480      AbstractCegarLoop]: Abstraction has 24 states and 34 transitions.
[2018-10-03 09:22:28,916 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:28,916 INFO  L276                IsEmpty]: Start isEmpty. Operand 24 states and 34 transitions.
[2018-10-03 09:22:28,916 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:28,916 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:28,916 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:22:28,917 INFO  L423      AbstractCegarLoop]: === Iteration 352 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:28,917 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:28,917 INFO  L82        PathProgramCache]: Analyzing trace with hash -256666948, now seen corresponding path program 336 times
[2018-10-03 09:22:28,917 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:28,917 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:28,917 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:28,917 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:28,917 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:28,918 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:28,996 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:28,996 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:28,996 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 352 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 352 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:29,004 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:22:29,013 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:22:29,013 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:29,014 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:29,044 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:29,065 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:29,066 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:29,066 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:29,066 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:29,066 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:29,066 INFO  L87              Difference]: Start difference. First operand 24 states and 34 transitions. Second operand 11 states.
[2018-10-03 09:22:29,791 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:29,792 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:22:29,792 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:29,792 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:29,792 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:29,792 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:22:29,792 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:22:29,792 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:29,793 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:22:30,206 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34.
[2018-10-03 09:22:30,206 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:30,206 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:30,206 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:30,207 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:30,207 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:30,207 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:30,207 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:30,207 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:30,207 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:30,207 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:30,207 INFO  L423      AbstractCegarLoop]: === Iteration 353 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:30,207 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:30,207 INFO  L82        PathProgramCache]: Analyzing trace with hash -256665026, now seen corresponding path program 337 times
[2018-10-03 09:22:30,207 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:30,207 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:30,208 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:30,208 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:30,208 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:30,209 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:30,289 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:30,289 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:30,289 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 353 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 353 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:30,297 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:22:30,303 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:30,304 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:30,348 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:30,369 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:30,369 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:30,369 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:30,369 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:30,370 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:30,370 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:31,074 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:31,075 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:22:31,075 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:31,075 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:31,075 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:31,076 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:22:31,076 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:22:31,076 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:31,076 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:22:31,492 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32.
[2018-10-03 09:22:31,493 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:22:31,493 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:22:31,493 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:22:31,493 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:31,493 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:22:31,493 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:31,493 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:22:31,493 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:31,493 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:31,493 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:31,493 INFO  L423      AbstractCegarLoop]: === Iteration 354 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:31,494 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:31,494 INFO  L82        PathProgramCache]: Analyzing trace with hash -254819906, now seen corresponding path program 338 times
[2018-10-03 09:22:31,494 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:31,494 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:31,494 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:31,494 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:22:31,494 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:31,495 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:31,556 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:31,556 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:31,556 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 354 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 354 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:31,564 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:22:31,570 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:22:31,570 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:31,571 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:31,613 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:31,633 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:31,633 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:31,633 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:31,634 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:31,634 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:31,634 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:22:32,359 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:32,360 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:22:32,360 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:32,360 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:32,360 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:32,361 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:22:32,361 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:22:32,361 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:22:32,361 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:22:32,796 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34.
[2018-10-03 09:22:32,796 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:32,797 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:32,797 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:32,797 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:32,797 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:32,797 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:32,797 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:32,797 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:32,797 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:32,797 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:32,797 INFO  L423      AbstractCegarLoop]: === Iteration 355 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:32,797 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:32,798 INFO  L82        PathProgramCache]: Analyzing trace with hash -254817984, now seen corresponding path program 339 times
[2018-10-03 09:22:32,798 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:32,798 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:32,798 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:32,798 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:32,798 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:32,799 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:32,875 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:32,875 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:32,875 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 355 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 355 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:32,883 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:22:32,894 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:22:32,895 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:32,895 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:32,922 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:32,943 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:32,944 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:32,944 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:32,944 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:32,944 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:32,944 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:33,645 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:33,646 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:22:33,646 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:33,646 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:33,646 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:33,647 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:22:33,647 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:22:33,647 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:22:33,647 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:22:34,034 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30.
[2018-10-03 09:22:34,034 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:22:34,034 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:22:34,034 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19
[2018-10-03 09:22:34,034 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:34,034 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:22:34,034 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:34,035 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:22:34,035 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:34,035 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:34,035 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:34,035 INFO  L423      AbstractCegarLoop]: === Iteration 356 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:34,035 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:34,035 INFO  L82        PathProgramCache]: Analyzing trace with hash 1518340414, now seen corresponding path program 340 times
[2018-10-03 09:22:34,035 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:34,035 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:34,036 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:34,036 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:34,036 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:34,037 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:34,115 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:34,115 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:34,116 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 356 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 356 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:34,129 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:22:34,156 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:22:34,156 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:34,157 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:34,226 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:34,247 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:34,247 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:34,247 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:34,247 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:34,247 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:34,247 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states.
[2018-10-03 09:22:34,919 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:34,919 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:22:34,919 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:34,919 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:34,919 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:34,920 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:22:34,920 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:22:34,920 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:34,920 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:22:35,343 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34.
[2018-10-03 09:22:35,343 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:35,343 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:35,343 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:35,343 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:35,343 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:35,343 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:35,343 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:35,344 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:35,344 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:35,344 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:35,344 INFO  L423      AbstractCegarLoop]: === Iteration 357 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:35,344 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:35,344 INFO  L82        PathProgramCache]: Analyzing trace with hash 1518342336, now seen corresponding path program 341 times
[2018-10-03 09:22:35,344 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:35,344 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:35,344 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:35,345 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:35,345 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:35,345 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:35,413 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:35,413 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:35,413 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 357 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 357 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:35,422 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:22:35,432 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:22:35,432 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:35,433 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:35,478 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:35,499 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:35,500 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:35,500 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:35,500 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:35,500 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:35,500 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:36,195 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:36,196 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:22:36,196 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:36,196 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:36,196 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:36,197 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:22:36,197 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:22:36,197 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:36,197 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:22:36,607 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32.
[2018-10-03 09:22:36,608 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:22:36,608 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:22:36,608 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:22:36,608 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:36,608 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:22:36,608 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:36,608 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:22:36,608 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:36,608 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:36,608 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:36,609 INFO  L423      AbstractCegarLoop]: === Iteration 358 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:36,609 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:36,609 INFO  L82        PathProgramCache]: Analyzing trace with hash 1520187456, now seen corresponding path program 342 times
[2018-10-03 09:22:36,609 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:36,609 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:36,609 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:36,609 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:36,609 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:36,610 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:36,690 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:36,690 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:36,690 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 358 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 358 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:36,699 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:22:36,709 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:22:36,709 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:36,710 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:36,741 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:36,761 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:36,762 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:36,762 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:36,762 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:36,762 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:36,762 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:22:37,429 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:37,430 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:22:37,430 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:37,430 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:37,430 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:37,431 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:22:37,431 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:22:37,431 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:37,431 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:22:37,852 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34.
[2018-10-03 09:22:37,852 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:37,852 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:37,852 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:37,852 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:37,852 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:37,852 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:37,853 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:37,853 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:37,853 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:37,853 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:37,853 INFO  L423      AbstractCegarLoop]: === Iteration 359 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:37,853 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:37,853 INFO  L82        PathProgramCache]: Analyzing trace with hash 1520189378, now seen corresponding path program 343 times
[2018-10-03 09:22:37,853 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:37,853 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:37,853 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:37,854 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:37,854 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:37,854 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:37,928 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:37,928 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:37,928 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 359 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 359 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:37,936 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:22:37,941 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:37,942 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:37,982 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:38,003 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:38,003 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:38,004 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:38,004 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:38,004 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:38,004 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:38,640 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:38,641 INFO  L93              Difference]: Finished difference Result 47 states and 67 transitions.
[2018-10-03 09:22:38,641 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:38,641 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:38,641 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:38,642 INFO  L225             Difference]: With dead ends: 47
[2018-10-03 09:22:38,642 INFO  L226             Difference]: Without dead ends: 45
[2018-10-03 09:22:38,642 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:38,642 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-10-03 09:22:39,036 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 28.
[2018-10-03 09:22:39,036 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-10-03 09:22:39,036 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 40 transitions.
[2018-10-03 09:22:39,037 INFO  L78                 Accepts]: Start accepts. Automaton has 28 states and 40 transitions. Word has length 19
[2018-10-03 09:22:39,037 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:39,037 INFO  L480      AbstractCegarLoop]: Abstraction has 28 states and 40 transitions.
[2018-10-03 09:22:39,037 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:39,037 INFO  L276                IsEmpty]: Start isEmpty. Operand 28 states and 40 transitions.
[2018-10-03 09:22:39,037 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:39,037 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:39,037 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:39,037 INFO  L423      AbstractCegarLoop]: === Iteration 360 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:39,037 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:39,037 INFO  L82        PathProgramCache]: Analyzing trace with hash 423391422, now seen corresponding path program 344 times
[2018-10-03 09:22:39,038 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:39,038 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:39,038 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:39,038 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:22:39,038 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:39,039 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:39,099 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:39,100 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:39,100 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 360 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 360 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:39,108 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:22:39,114 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:22:39,114 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:39,114 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:39,169 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:39,190 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:39,190 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:39,191 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:39,191 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:39,191 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:39,191 INFO  L87              Difference]: Start difference. First operand 28 states and 40 transitions. Second operand 11 states.
[2018-10-03 09:22:39,911 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:39,912 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:22:39,912 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:39,912 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:39,912 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:39,913 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:22:39,913 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:22:39,913 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:39,913 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:22:40,339 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34.
[2018-10-03 09:22:40,339 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:40,339 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:40,340 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:40,340 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:40,340 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:40,340 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:40,340 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:40,340 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:40,340 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:40,340 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:40,340 INFO  L423      AbstractCegarLoop]: === Iteration 361 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:40,340 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:40,340 INFO  L82        PathProgramCache]: Analyzing trace with hash 423393344, now seen corresponding path program 345 times
[2018-10-03 09:22:40,341 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:40,341 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:40,341 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:40,341 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:40,341 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:40,342 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:40,425 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:40,426 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:40,426 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 361 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 361 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:40,433 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:22:40,442 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:22:40,443 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:40,448 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:40,511 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:40,532 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:40,532 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:40,533 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:40,533 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:40,533 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:40,533 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:41,255 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:41,256 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:22:41,256 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:41,256 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:41,256 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:41,257 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:22:41,257 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:22:41,257 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:41,257 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:22:41,669 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 32.
[2018-10-03 09:22:41,669 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:22:41,670 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:22:41,670 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:22:41,670 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:41,670 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:22:41,670 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:41,670 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:22:41,670 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:41,670 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:41,670 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:41,670 INFO  L423      AbstractCegarLoop]: === Iteration 362 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:41,670 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:41,671 INFO  L82        PathProgramCache]: Analyzing trace with hash 425238464, now seen corresponding path program 346 times
[2018-10-03 09:22:41,671 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:41,671 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:41,671 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:41,671 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:41,671 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:41,672 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:41,732 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:41,732 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:41,732 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 362 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 362 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:41,742 INFO  L103   rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-10-03 09:22:41,749 INFO  L242   tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-10-03 09:22:41,749 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:41,750 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:41,849 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:41,870 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:41,870 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:41,870 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:41,870 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:41,870 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:41,870 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:22:42,626 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:42,627 INFO  L93              Difference]: Finished difference Result 55 states and 79 transitions.
[2018-10-03 09:22:42,627 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:42,627 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:42,627 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:42,627 INFO  L225             Difference]: With dead ends: 55
[2018-10-03 09:22:42,627 INFO  L226             Difference]: Without dead ends: 53
[2018-10-03 09:22:42,627 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time 0.0s impTime 9
[2018-10-03 09:22:42,627 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-10-03 09:22:43,047 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34.
[2018-10-03 09:22:43,048 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:43,048 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:43,048 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:43,048 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:43,048 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:43,048 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:43,048 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:43,048 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:43,048 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:43,048 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:43,049 INFO  L423      AbstractCegarLoop]: === Iteration 363 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:43,049 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:43,049 INFO  L82        PathProgramCache]: Analyzing trace with hash 425240386, now seen corresponding path program 347 times
[2018-10-03 09:22:43,049 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:43,049 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:43,049 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:43,049 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:43,050 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:43,051 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:43,124 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:43,124 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:43,124 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 363 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 363 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:43,132 INFO  L103   rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-10-03 09:22:43,142 INFO  L242   tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s)
[2018-10-03 09:22:43,142 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:43,143 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:43,176 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:43,198 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:43,198 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:43,198 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:43,198 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:43,198 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:43,199 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:43,920 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:43,921 INFO  L93              Difference]: Finished difference Result 53 states and 76 transitions.
[2018-10-03 09:22:43,921 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:43,921 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:43,921 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:43,921 INFO  L225             Difference]: With dead ends: 53
[2018-10-03 09:22:43,921 INFO  L226             Difference]: Without dead ends: 51
[2018-10-03 09:22:43,921 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:22:43,922 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-10-03 09:22:44,308 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 30.
[2018-10-03 09:22:44,309 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-10-03 09:22:44,309 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 43 transitions.
[2018-10-03 09:22:44,309 INFO  L78                 Accepts]: Start accepts. Automaton has 30 states and 43 transitions. Word has length 19
[2018-10-03 09:22:44,309 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:44,309 INFO  L480      AbstractCegarLoop]: Abstraction has 30 states and 43 transitions.
[2018-10-03 09:22:44,309 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:44,309 INFO  L276                IsEmpty]: Start isEmpty. Operand 30 states and 43 transitions.
[2018-10-03 09:22:44,309 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:44,309 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:44,309 INFO  L375         BasicCegarLoop]: trace histogram [8, 4, 4, 1, 1, 1]
[2018-10-03 09:22:44,310 INFO  L423      AbstractCegarLoop]: === Iteration 364 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:44,310 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:44,310 INFO  L82        PathProgramCache]: Analyzing trace with hash -2096568512, now seen corresponding path program 348 times
[2018-10-03 09:22:44,310 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:44,310 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:44,310 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:44,311 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:44,311 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:44,312 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:44,373 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:44,373 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:44,373 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 364 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 364 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:44,382 INFO  L103   rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-10-03 09:22:44,391 INFO  L242   tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 9 check-sat command(s)
[2018-10-03 09:22:44,391 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:44,392 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:44,429 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:44,450 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:44,451 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:44,451 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:44,451 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:44,451 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:44,451 INFO  L87              Difference]: Start difference. First operand 30 states and 43 transitions. Second operand 11 states.
[2018-10-03 09:22:45,123 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:45,124 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:22:45,124 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:45,124 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:45,124 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:45,124 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:22:45,124 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:22:45,124 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:22:45,124 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:22:45,549 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 34.
[2018-10-03 09:22:45,549 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:45,549 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:45,549 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:45,549 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:45,549 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:45,549 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:45,549 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:45,550 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:45,550 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:45,550 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:45,550 INFO  L423      AbstractCegarLoop]: === Iteration 365 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:45,550 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:45,550 INFO  L82        PathProgramCache]: Analyzing trace with hash -2096566590, now seen corresponding path program 349 times
[2018-10-03 09:22:45,550 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:45,550 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:45,550 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:45,551 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:45,551 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:45,554 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:45,622 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:45,622 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:45,623 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 365 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 365 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:45,631 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:22:45,636 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:45,637 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:45,663 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:45,685 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:45,685 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:45,685 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:45,686 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:45,686 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:45,686 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
[2018-10-03 09:22:46,392 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:46,393 INFO  L93              Difference]: Finished difference Result 51 states and 73 transitions.
[2018-10-03 09:22:46,393 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:46,393 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:46,393 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:46,394 INFO  L225             Difference]: With dead ends: 51
[2018-10-03 09:22:46,394 INFO  L226             Difference]: Without dead ends: 49
[2018-10-03 09:22:46,394 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:22:46,394 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-10-03 09:22:46,810 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32.
[2018-10-03 09:22:46,810 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-10-03 09:22:46,810 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 46 transitions.
[2018-10-03 09:22:46,810 INFO  L78                 Accepts]: Start accepts. Automaton has 32 states and 46 transitions. Word has length 19
[2018-10-03 09:22:46,810 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:46,810 INFO  L480      AbstractCegarLoop]: Abstraction has 32 states and 46 transitions.
[2018-10-03 09:22:46,810 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:46,810 INFO  L276                IsEmpty]: Start isEmpty. Operand 32 states and 46 transitions.
[2018-10-03 09:22:46,811 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:46,811 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:46,811 INFO  L375         BasicCegarLoop]: trace histogram [8, 5, 3, 1, 1, 1]
[2018-10-03 09:22:46,811 INFO  L423      AbstractCegarLoop]: === Iteration 366 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:46,811 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:46,811 INFO  L82        PathProgramCache]: Analyzing trace with hash -2094721470, now seen corresponding path program 350 times
[2018-10-03 09:22:46,811 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:46,811 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:46,811 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:46,811 INFO  L103   rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-10-03 09:22:46,812 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:46,812 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:46,868 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:46,868 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:46,868 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 366 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 366 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:46,877 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-10-03 09:22:46,884 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-10-03 09:22:46,884 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:46,885 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:46,918 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:46,939 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:46,940 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:46,940 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:46,940 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:46,940 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:46,940 INFO  L87              Difference]: Start difference. First operand 32 states and 46 transitions. Second operand 11 states.
[2018-10-03 09:22:47,641 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-10-03 09:22:47,642 INFO  L93              Difference]: Finished difference Result 49 states and 70 transitions.
[2018-10-03 09:22:47,642 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2018-10-03 09:22:47,642 INFO  L78                 Accepts]: Start accepts. Automaton has 11 states. Word has length 19
[2018-10-03 09:22:47,642 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2018-10-03 09:22:47,643 INFO  L225             Difference]: With dead ends: 49
[2018-10-03 09:22:47,643 INFO  L226             Difference]: Without dead ends: 47
[2018-10-03 09:22:47,643 INFO  L605         BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time 0.0s impTime 9
[2018-10-03 09:22:47,643 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-10-03 09:22:48,072 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 34.
[2018-10-03 09:22:48,072 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-10-03 09:22:48,072 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 49 transitions.
[2018-10-03 09:22:48,072 INFO  L78                 Accepts]: Start accepts. Automaton has 34 states and 49 transitions. Word has length 19
[2018-10-03 09:22:48,072 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2018-10-03 09:22:48,072 INFO  L480      AbstractCegarLoop]: Abstraction has 34 states and 49 transitions.
[2018-10-03 09:22:48,072 INFO  L481      AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-10-03 09:22:48,072 INFO  L276                IsEmpty]: Start isEmpty. Operand 34 states and 49 transitions.
[2018-10-03 09:22:48,073 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-10-03 09:22:48,073 INFO  L367         BasicCegarLoop]: Found error trace
[2018-10-03 09:22:48,073 INFO  L375         BasicCegarLoop]: trace histogram [8, 6, 2, 1, 1, 1]
[2018-10-03 09:22:48,073 INFO  L423      AbstractCegarLoop]: === Iteration 367 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-10-03 09:22:48,073 INFO  L106      BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-10-03 09:22:48,073 INFO  L82        PathProgramCache]: Analyzing trace with hash -2094719548, now seen corresponding path program 351 times
[2018-10-03 09:22:48,073 INFO  L227   ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-10-03 09:22:48,073 INFO  L69    tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-10-03 09:22:48,073 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:48,074 INFO  L101   rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-10-03 09:22:48,074 INFO  L119   rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-10-03 09:22:48,074 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-10-03 09:22:48,135 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:48,135 INFO  L300   seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-10-03 09:22:48,135 INFO  L227   ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 367 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 367 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-10-03 09:22:48,144 INFO  L103   rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-10-03 09:22:48,154 INFO  L242   tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-10-03 09:22:48,155 INFO  L243   tOrderPrioritization]: Conjunction of SSA is unsat
[2018-10-03 09:22:48,156 INFO  L273         TraceCheckSpWp]: Computing forward predicates...
[2018-10-03 09:22:48,197 INFO  L134       CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 64 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-10-03 09:22:48,218 INFO  L312   seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-10-03 09:22:48,218 INFO  L327   seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10
[2018-10-03 09:22:48,218 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-10-03 09:22:48,218 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-10-03 09:22:48,218 INFO  L146   InterpolantAutomaton]: No coverage relation statistics for ImplicationMap
[2018-10-03 09:22:48,218 INFO  L87              Difference]: Start difference. First operand 34 states and 49 transitions. Second operand 11 states.
Received shutdown request...
[2018-10-03 09:22:48,654 INFO  L142   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2018-10-03 09:22:48,655 WARN  L549      AbstractCegarLoop]: Verification canceled
[2018-10-03 09:22:48,661 WARN  L205   ceAbstractionStarter]: Timeout
[2018-10-03 09:22:48,661 INFO  L202        PluginConnector]: Adding new model Luxembourg-sophisticated.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 09:22:48 BoogieIcfgContainer
[2018-10-03 09:22:48,662 INFO  L132        PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-10-03 09:22:48,663 INFO  L168              Benchmark]: Toolchain (without parser) took 255534.82 ms. Allocated memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: -416.8 MB). Free memory was 1.5 GB in the beginning and 898.3 MB in the end (delta: 564.2 MB). Peak memory consumption was 147.4 MB. Max. memory is 7.1 GB.
[2018-10-03 09:22:48,664 INFO  L168              Benchmark]: Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-03 09:22:48,665 INFO  L168              Benchmark]: Boogie Procedure Inliner took 41.48 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-03 09:22:48,665 INFO  L168              Benchmark]: Boogie Preprocessor took 23.72 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-10-03 09:22:48,665 INFO  L168              Benchmark]: RCFGBuilder took 314.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB.
[2018-10-03 09:22:48,666 INFO  L168              Benchmark]: TraceAbstraction took 255149.04 ms. Allocated memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: -416.8 MB). Free memory was 1.4 GB in the beginning and 898.3 MB in the end (delta: 543.1 MB). Peak memory consumption was 126.3 MB. Max. memory is 7.1 GB.
[2018-10-03 09:22:48,667 INFO  L336   ainManager$Toolchain]: #######################  End [Toolchain 1] #######################
 --- Results ---
 * Results from de.uni_freiburg.informatik.ultimate.core:
  - StatisticsResult: Toolchain Benchmarks
    Benchmark results are:
 * Boogie PL CUP Parser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * Boogie Procedure Inliner took 41.48 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * Boogie Preprocessor took 23.72 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
 * RCFGBuilder took 314.69 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB.
 * TraceAbstraction took 255149.04 ms. Allocated memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: -416.8 MB). Free memory was 1.4 GB in the beginning and 898.3 MB in the end (delta: 543.1 MB). Peak memory consumption was 126.3 MB. Max. memory is 7.1 GB.
 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
  - TimeoutResultAtElement [Line: 29]: Timeout (TraceAbstraction)
    Unable to prove that assertion always holds (line 29). Cancelled  while BasicCegarLoop was constructing difference of abstraction (34states) and FLOYD_HOARE automaton (currently 9 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (23 states constructedinput type IntersectNwa).
  - StatisticsResult: Ultimate Automizer benchmark data
    CFG has 1 procedures, 7 locations, 1 error locations. TIMEOUT Result, 255.0s OverallTime, 367 OverallIterations, 8 TraceHistogramMax, 121.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1468 SDtfs, 2801 SDslu, 4955 SDs, 0 SdLazy, 8431 SolverSat, 4753 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 19.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8768 GetRequests, 5967 SyntacticMatches, 0 SemanticMatches, 2801 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=256, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 61.3s AutomataMinimizationTime, 366 MinimizatonAttempts, 5480 StatesRemovedByMinimization, 366 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 3.6s SatisfiabilityAnalysisTime, 56.0s InterpolantComputationTime, 11935 NumberOfCodeBlocks, 11935 NumberOfCodeBlocksAsserted, 2068 NumberOfCheckSat, 11202 ConstructedInterpolants, 0 QuantifiedInterpolants, 508584 SizeOfPredicates, 366 NumberOfNonLiveVariables, 15464 ConjunctsInSsa, 3166 ConjunctsInUnsatCore, 733 InterpolantComputations, 1 PerfectInterpolantSequences, 0/33780 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available
RESULT: Ultimate could not prove your program: Timeout
Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg-sophisticated.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-10-03_09-22-48-677.csv
Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Luxembourg-sophisticated.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-10-03_09-22-48-677.csv
Completed graceful shutdown