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/LexIndexValue-Pointer-Reduced.bpl
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This is Ultimate 0.1.23-00a8621
[2018-09-30 10:57:57,790 INFO L170 SettingsManager]: Resetting all preferences to default values...
[2018-09-30 10:57:57,792 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values
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[2018-09-30 10:57:57,805 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values
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[2018-09-30 10:57:57,807 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values
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[2018-09-30 10:57:57,817 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2018-09-30 10:57:57,819 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-09-30 10:57:57,821 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values
[2018-09-30 10:57:57,823 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2018-09-30 10:57:57,824 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values
[2018-09-30 10:57:57,825 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values
[2018-09-30 10:57:57,827 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
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[2018-09-30 10:57:57,828 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values
[2018-09-30 10:57:57,829 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values
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[2018-09-30 10:57:57,834 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values
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[2018-09-30 10:57:57,836 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
[2018-09-30 10:57:57,861 INFO L110 SettingsManager]: Loading preferences was successful
[2018-09-30 10:57:57,861 INFO L112 SettingsManager]: Preferences different from defaults after loading the file:
[2018-09-30 10:57:57,862 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-09-30 10:57:57,862 INFO L133 SettingsManager]: * to procedures, called more than once=true
[2018-09-30 10:57:57,863 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-09-30 10:57:57,863 INFO L133 SettingsManager]: * Create parallel compositions if possible=false
[2018-09-30 10:57:57,863 INFO L133 SettingsManager]: * Use SBE=true
[2018-09-30 10:57:57,863 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-09-30 10:57:57,864 INFO L133 SettingsManager]: * sizeof long=4
[2018-09-30 10:57:57,864 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true
[2018-09-30 10:57:57,864 INFO L133 SettingsManager]: * sizeof POINTER=4
[2018-09-30 10:57:57,864 INFO L133 SettingsManager]: * Check division by zero=IGNORE
[2018-09-30 10:57:57,864 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2018-09-30 10:57:57,864 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-09-30 10:57:57,865 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2018-09-30 10:57:57,865 INFO L133 SettingsManager]: * sizeof long double=12
[2018-09-30 10:57:57,865 INFO L133 SettingsManager]: * Check if freed pointer was valid=false
[2018-09-30 10:57:57,865 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2018-09-30 10:57:57,865 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-09-30 10:57:57,866 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements
[2018-09-30 10:57:57,866 INFO L133 SettingsManager]: * To the following directory=./dump/
[2018-09-30 10:57:57,866 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode
[2018-09-30 10:57:57,866 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-09-30 10:57:57,866 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-09-30 10:57:57,867 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2018-09-30 10:57:57,867 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-09-30 10:57:57,867 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL
[2018-09-30 10:57:57,867 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2018-09-30 10:57:57,867 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-09-30 10:57:57,868 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-09-30 10:57:57,868 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true
[2018-09-30 10:57:57,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2018-09-30 10:57:57,942 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-09-30 10:57:57,949 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-09-30 10:57:57,951 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2018-09-30 10:57:57,952 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized
[2018-09-30 10:57:57,952 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LexIndexValue-Pointer-Reduced.bpl
[2018-09-30 10:57:57,953 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/toy/tooDifficultLoopInvariant/LexIndexValue-Pointer-Reduced.bpl'
[2018-09-30 10:57:58,005 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-09-30 10:57:58,008 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2018-09-30 10:57:58,009 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-09-30 10:57:58,009 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-09-30 10:57:58,009 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized
[2018-09-30 10:57:58,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:57" (1/1) ...
[2018-09-30 10:57:58,043 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:57" (1/1) ...
[2018-09-30 10:57:58,048 WARN L165 Inliner]: Program contained no entry procedure!
[2018-09-30 10:57:58,048 WARN L168 Inliner]: Missing entry procedures: [ULTIMATE.start]
[2018-09-30 10:57:58,049 WARN L175 Inliner]: Fallback enabled. All procedures will be processed.
[2018-09-30 10:57:58,051 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-09-30 10:57:58,052 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-09-30 10:57:58,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2018-09-30 10:57:58,052 INFO L276 PluginConnector]: Boogie Preprocessor initialized
[2018-09-30 10:57:58,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:57" (1/1) ...
[2018-09-30 10:57:58,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:57" (1/1) ...
[2018-09-30 10:57:58,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:57" (1/1) ...
[2018-09-30 10:57:58,064 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:57" (1/1) ...
[2018-09-30 10:57:58,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:57" (1/1) ...
[2018-09-30 10:57:58,074 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:57" (1/1) ...
[2018-09-30 10:57:58,075 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:57" (1/1) ...
[2018-09-30 10:57:58,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-09-30 10:57:58,077 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-09-30 10:57:58,077 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2018-09-30 10:57:58,078 INFO L276 PluginConnector]: RCFGBuilder initialized
[2018-09-30 10:57:58,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:57" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-09-30 10:57:58,149 INFO L130 BoogieDeclarations]: Found specification of procedure main
[2018-09-30 10:57:58,149 INFO L138 BoogieDeclarations]: Found implementation of procedure main
[2018-09-30 10:57:58,373 INFO L345 CfgBuilder]: Using library mode
[2018-09-30 10:57:58,373 INFO L202 PluginConnector]: Adding new model LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:57:58 BoogieIcfgContainer
[2018-09-30 10:57:58,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-09-30 10:57:58,375 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-09-30 10:57:58,375 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2018-09-30 10:57:58,379 INFO L276 PluginConnector]: TraceAbstraction initialized
[2018-09-30 10:57:58,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:57:57" (1/2) ...
[2018-09-30 10:57:58,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51d630e5 and model type LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 10:57:58, skipping insertion in model container
[2018-09-30 10:57:58,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:57:58" (2/2) ...
[2018-09-30 10:57:58,387 INFO L112 eAbstractionObserver]: Analyzing ICFG LexIndexValue-Pointer-Reduced.bpl
[2018-09-30 10:57:58,398 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-09-30 10:57:58,409 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-09-30 10:57:58,467 INFO L133 ementStrategyFactory]: Using default assertion order modulation
[2018-09-30 10:57:58,468 INFO L381 AbstractCegarLoop]: Interprodecural is true
[2018-09-30 10:57:58,468 INFO L382 AbstractCegarLoop]: Hoare is true
[2018-09-30 10:57:58,468 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-09-30 10:57:58,468 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-09-30 10:57:58,468 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-09-30 10:57:58,469 INFO L386 AbstractCegarLoop]: Difference is false
[2018-09-30 10:57:58,469 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-09-30 10:57:58,469 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-09-30 10:57:58,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states.
[2018-09-30 10:57:58,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4
[2018-09-30 10:57:58,502 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:58,505 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1]
[2018-09-30 10:57:58,506 INFO L423 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:58,516 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:58,516 INFO L82 PathProgramCache]: Analyzing trace with hash 29920, now seen corresponding path program 1 times
[2018-09-30 10:57:58,519 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:58,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:58,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:58,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:57:58,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:58,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:58,673 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-30 10:57:58,674 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1
[2018-09-30 10:57:58,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states
[2018-09-30 10:57:58,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants.
[2018-09-30 10:57:58,692 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:58,694 INFO L87 Difference]: Start difference. First operand 6 states. Second operand 3 states.
[2018-09-30 10:57:58,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:58,934 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions.
[2018-09-30 10:57:58,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states.
[2018-09-30 10:57:58,936 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3
[2018-09-30 10:57:58,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:58,947 INFO L225 Difference]: With dead ends: 11
[2018-09-30 10:57:58,947 INFO L226 Difference]: Without dead ends: 6
[2018-09-30 10:57:58,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:58,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states.
[2018-09-30 10:57:58,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6.
[2018-09-30 10:57:58,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states.
[2018-09-30 10:57:58,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions.
[2018-09-30 10:57:58,988 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 3
[2018-09-30 10:57:58,988 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:58,988 INFO L480 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions.
[2018-09-30 10:57:58,988 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states.
[2018-09-30 10:57:58,988 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions.
[2018-09-30 10:57:58,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6
[2018-09-30 10:57:58,989 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:58,989 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1]
[2018-09-30 10:57:58,989 INFO L423 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:58,990 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:58,990 INFO L82 PathProgramCache]: Analyzing trace with hash 28754210, now seen corresponding path program 1 times
[2018-09-30 10:57:58,990 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:58,990 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:58,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:58,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:57:58,992 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:58,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:59,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:59,063 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:59,064 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
[2018-09-30 10:57:59,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:57:59,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:59,106 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:59,232 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:59,253 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:59,254 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 4
[2018-09-30 10:57:59,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states
[2018-09-30 10:57:59,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants.
[2018-09-30 10:57:59,255 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:59,255 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 6 states.
[2018-09-30 10:57:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:59,453 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions.
[2018-09-30 10:57:59,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2018-09-30 10:57:59,455 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5
[2018-09-30 10:57:59,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:59,456 INFO L225 Difference]: With dead ends: 9
[2018-09-30 10:57:59,456 INFO L226 Difference]: Without dead ends: 8
[2018-09-30 10:57:59,457 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:59,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states.
[2018-09-30 10:57:59,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8.
[2018-09-30 10:57:59,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states.
[2018-09-30 10:57:59,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions.
[2018-09-30 10:57:59,461 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 5
[2018-09-30 10:57:59,461 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:59,462 INFO L480 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions.
[2018-09-30 10:57:59,462 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states.
[2018-09-30 10:57:59,462 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions.
[2018-09-30 10:57:59,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8
[2018-09-30 10:57:59,463 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:59,463 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 1, 1]
[2018-09-30 10:57:59,463 INFO L423 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:59,464 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:59,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1862993124, now seen corresponding path program 2 times
[2018-09-30 10:57:59,464 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:59,464 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:59,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:59,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:57:59,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:59,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:59,580 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
[2018-09-30 10:57:59,591 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:57:59,601 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:57:59,602 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:57:59,605 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:59,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:59,872 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:59,872 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 6
[2018-09-30 10:57:59,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-09-30 10:57:59,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-09-30 10:57:59,873 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:59,873 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 8 states.
[2018-09-30 10:58:00,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:00,007 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions.
[2018-09-30 10:58:00,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states.
[2018-09-30 10:58:00,008 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 7
[2018-09-30 10:58:00,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:00,008 INFO L225 Difference]: With dead ends: 11
[2018-09-30 10:58:00,008 INFO L226 Difference]: Without dead ends: 10
[2018-09-30 10:58:00,009 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:00,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states.
[2018-09-30 10:58:00,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10.
[2018-09-30 10:58:00,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states.
[2018-09-30 10:58:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions.
[2018-09-30 10:58:00,012 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 7
[2018-09-30 10:58:00,013 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:00,013 INFO L480 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions.
[2018-09-30 10:58:00,013 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-09-30 10:58:00,013 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions.
[2018-09-30 10:58:00,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10
[2018-09-30 10:58:00,014 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:00,014 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 1, 1]
[2018-09-30 10:58:00,015 INFO L423 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:00,015 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:00,015 INFO L82 PathProgramCache]: Analyzing trace with hash -664969178, now seen corresponding path program 3 times
[2018-09-30 10:58:00,015 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:00,015 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:00,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:00,017 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:00,017 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:00,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:00,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:00,078 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:00,079 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
[2018-09-30 10:58:00,087 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:58:00,096 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s)
[2018-09-30 10:58:00,096 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:00,098 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:00,295 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:00,316 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:00,317 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8
[2018-09-30 10:58:00,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-09-30 10:58:00,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-09-30 10:58:00,318 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:00,318 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 10 states.
[2018-09-30 10:58:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:00,460 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions.
[2018-09-30 10:58:00,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2018-09-30 10:58:00,461 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 9
[2018-09-30 10:58:00,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:00,462 INFO L225 Difference]: With dead ends: 13
[2018-09-30 10:58:00,463 INFO L226 Difference]: Without dead ends: 12
[2018-09-30 10:58:00,463 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:00,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states.
[2018-09-30 10:58:00,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12.
[2018-09-30 10:58:00,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states.
[2018-09-30 10:58:00,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions.
[2018-09-30 10:58:00,467 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9
[2018-09-30 10:58:00,468 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:00,468 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions.
[2018-09-30 10:58:00,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-09-30 10:58:00,468 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions.
[2018-09-30 10:58:00,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12
[2018-09-30 10:58:00,469 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:00,469 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 1, 1]
[2018-09-30 10:58:00,469 INFO L423 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:00,469 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:00,469 INFO L82 PathProgramCache]: Analyzing trace with hash 914748136, now seen corresponding path program 4 times
[2018-09-30 10:58:00,469 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:00,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:00,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:00,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:00,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:00,604 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:00,604 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:00,605 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
[2018-09-30 10:58:00,625 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:58:00,661 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:58:00,662 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:00,664 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:01,040 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:01,061 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:01,061 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 10
[2018-09-30 10:58:01,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states
[2018-09-30 10:58:01,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2018-09-30 10:58:01,062 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:01,062 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 12 states.
[2018-09-30 10:58:01,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:01,359 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions.
[2018-09-30 10:58:01,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states.
[2018-09-30 10:58:01,361 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 11
[2018-09-30 10:58:01,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:01,362 INFO L225 Difference]: With dead ends: 15
[2018-09-30 10:58:01,362 INFO L226 Difference]: Without dead ends: 14
[2018-09-30 10:58:01,363 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:01,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states.
[2018-09-30 10:58:01,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14.
[2018-09-30 10:58:01,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states.
[2018-09-30 10:58:01,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions.
[2018-09-30 10:58:01,367 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11
[2018-09-30 10:58:01,367 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:01,367 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions.
[2018-09-30 10:58:01,368 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2018-09-30 10:58:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions.
[2018-09-30 10:58:01,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14
[2018-09-30 10:58:01,368 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:01,368 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 1, 1]
[2018-09-30 10:58:01,369 INFO L423 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:01,369 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:01,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1395335894, now seen corresponding path program 5 times
[2018-09-30 10:58:01,369 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:01,369 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:01,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:01,370 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:01,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:01,464 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:01,465 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:01,465 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
[2018-09-30 10:58:01,476 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:58:01,487 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s)
[2018-09-30 10:58:01,487 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:01,490 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:01,604 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:01,625 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:01,626 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 12
[2018-09-30 10:58:01,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states
[2018-09-30 10:58:01,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2018-09-30 10:58:01,627 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:01,627 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 14 states.
[2018-09-30 10:58:01,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:01,833 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions.
[2018-09-30 10:58:01,834 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2018-09-30 10:58:01,834 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13
[2018-09-30 10:58:01,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:01,835 INFO L225 Difference]: With dead ends: 17
[2018-09-30 10:58:01,835 INFO L226 Difference]: Without dead ends: 16
[2018-09-30 10:58:01,835 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:01,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states.
[2018-09-30 10:58:01,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16.
[2018-09-30 10:58:01,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states.
[2018-09-30 10:58:01,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions.
[2018-09-30 10:58:01,840 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13
[2018-09-30 10:58:01,840 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:01,840 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions.
[2018-09-30 10:58:01,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2018-09-30 10:58:01,840 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions.
[2018-09-30 10:58:01,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16
[2018-09-30 10:58:01,841 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:01,841 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 1, 1]
[2018-09-30 10:58:01,841 INFO L423 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:01,842 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:01,842 INFO L82 PathProgramCache]: Analyzing trace with hash -887996692, now seen corresponding path program 6 times
[2018-09-30 10:58:01,842 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:01,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:01,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:01,843 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:01,843 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:01,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:01,953 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:01,954 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:01,954 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-30 10:58:01,963 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:58:01,971 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s)
[2018-09-30 10:58:01,971 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:01,973 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:02,257 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:02,282 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:02,282 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14
[2018-09-30 10:58:02,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states
[2018-09-30 10:58:02,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2018-09-30 10:58:02,283 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:02,283 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 16 states.
[2018-09-30 10:58:02,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:02,395 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions.
[2018-09-30 10:58:02,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2018-09-30 10:58:02,396 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 15
[2018-09-30 10:58:02,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:02,397 INFO L225 Difference]: With dead ends: 19
[2018-09-30 10:58:02,397 INFO L226 Difference]: Without dead ends: 18
[2018-09-30 10:58:02,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:02,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states.
[2018-09-30 10:58:02,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18.
[2018-09-30 10:58:02,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states.
[2018-09-30 10:58:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions.
[2018-09-30 10:58:02,402 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15
[2018-09-30 10:58:02,402 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:02,402 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions.
[2018-09-30 10:58:02,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2018-09-30 10:58:02,403 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions.
[2018-09-30 10:58:02,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18
[2018-09-30 10:58:02,403 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:02,404 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 1, 1]
[2018-09-30 10:58:02,404 INFO L423 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:02,404 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:02,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1333671982, now seen corresponding path program 7 times
[2018-09-30 10:58:02,404 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:02,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:02,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:02,405 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:02,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:02,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:02,501 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:02,501 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
[2018-09-30 10:58:02,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:02,527 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:02,645 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:02,667 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:02,667 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 16
[2018-09-30 10:58:02,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states
[2018-09-30 10:58:02,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2018-09-30 10:58:02,668 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:02,668 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 18 states.
[2018-09-30 10:58:02,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:02,843 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions.
[2018-09-30 10:58:02,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2018-09-30 10:58:02,844 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 17
[2018-09-30 10:58:02,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:02,845 INFO L225 Difference]: With dead ends: 21
[2018-09-30 10:58:02,846 INFO L226 Difference]: Without dead ends: 20
[2018-09-30 10:58:02,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:02,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states.
[2018-09-30 10:58:02,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20.
[2018-09-30 10:58:02,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states.
[2018-09-30 10:58:02,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions.
[2018-09-30 10:58:02,850 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17
[2018-09-30 10:58:02,850 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:02,850 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions.
[2018-09-30 10:58:02,850 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2018-09-30 10:58:02,851 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions.
[2018-09-30 10:58:02,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20
[2018-09-30 10:58:02,851 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:02,851 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 1, 1]
[2018-09-30 10:58:02,851 INFO L423 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:02,852 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:02,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1758521584, now seen corresponding path program 8 times
[2018-09-30 10:58:02,852 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:02,852 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:02,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:02,853 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:02,853 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:02,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:02,953 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:02,953 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:02,953 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
[2018-09-30 10:58:02,964 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:58:02,976 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:58:02,977 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:02,978 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:03,110 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:03,131 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:03,131 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 18
[2018-09-30 10:58:03,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states
[2018-09-30 10:58:03,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2018-09-30 10:58:03,133 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:03,133 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 20 states.
[2018-09-30 10:58:03,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:03,348 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions.
[2018-09-30 10:58:03,349 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2018-09-30 10:58:03,349 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 19
[2018-09-30 10:58:03,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:03,351 INFO L225 Difference]: With dead ends: 23
[2018-09-30 10:58:03,351 INFO L226 Difference]: Without dead ends: 22
[2018-09-30 10:58:03,351 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:03,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states.
[2018-09-30 10:58:03,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22.
[2018-09-30 10:58:03,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states.
[2018-09-30 10:58:03,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions.
[2018-09-30 10:58:03,355 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19
[2018-09-30 10:58:03,355 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:03,356 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions.
[2018-09-30 10:58:03,356 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2018-09-30 10:58:03,356 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions.
[2018-09-30 10:58:03,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22
[2018-09-30 10:58:03,357 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:03,357 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 1, 1]
[2018-09-30 10:58:03,357 INFO L423 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:03,357 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:03,357 INFO L82 PathProgramCache]: Analyzing trace with hash 2017095986, now seen corresponding path program 9 times
[2018-09-30 10:58:03,357 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:03,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:03,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:03,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:03,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:03,489 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:03,490 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
[2018-09-30 10:58:03,499 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:58:03,510 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s)
[2018-09-30 10:58:03,510 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:03,513 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:03,872 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:03,893 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:03,893 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 20
[2018-09-30 10:58:03,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states
[2018-09-30 10:58:03,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2018-09-30 10:58:03,894 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:03,894 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 22 states.
[2018-09-30 10:58:04,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:04,274 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions.
[2018-09-30 10:58:04,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2018-09-30 10:58:04,275 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 21
[2018-09-30 10:58:04,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:04,276 INFO L225 Difference]: With dead ends: 25
[2018-09-30 10:58:04,276 INFO L226 Difference]: Without dead ends: 24
[2018-09-30 10:58:04,276 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:04,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states.
[2018-09-30 10:58:04,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24.
[2018-09-30 10:58:04,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states.
[2018-09-30 10:58:04,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions.
[2018-09-30 10:58:04,282 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 21
[2018-09-30 10:58:04,282 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:04,282 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions.
[2018-09-30 10:58:04,282 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2018-09-30 10:58:04,282 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions.
[2018-09-30 10:58:04,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24
[2018-09-30 10:58:04,283 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:04,283 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 1, 1]
[2018-09-30 10:58:04,284 INFO L423 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:04,284 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:04,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993140, now seen corresponding path program 10 times
[2018-09-30 10:58:04,284 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:04,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:04,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:04,285 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:04,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:04,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:04,394 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:04,394 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-30 10:58:04,402 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:58:04,410 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:58:04,410 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:04,413 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:04,716 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:04,736 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:04,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 22
[2018-09-30 10:58:04,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states
[2018-09-30 10:58:04,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2018-09-30 10:58:04,737 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:04,737 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 24 states.
[2018-09-30 10:58:05,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:05,012 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions.
[2018-09-30 10:58:05,012 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2018-09-30 10:58:05,012 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 23
[2018-09-30 10:58:05,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:05,013 INFO L225 Difference]: With dead ends: 27
[2018-09-30 10:58:05,014 INFO L226 Difference]: Without dead ends: 26
[2018-09-30 10:58:05,014 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:05,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states.
[2018-09-30 10:58:05,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26.
[2018-09-30 10:58:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states.
[2018-09-30 10:58:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions.
[2018-09-30 10:58:05,019 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 23
[2018-09-30 10:58:05,019 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:05,019 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions.
[2018-09-30 10:58:05,019 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2018-09-30 10:58:05,020 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions.
[2018-09-30 10:58:05,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26
[2018-09-30 10:58:05,020 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:05,020 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 1, 1]
[2018-09-30 10:58:05,021 INFO L423 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:05,021 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:05,021 INFO L82 PathProgramCache]: Analyzing trace with hash 107644982, now seen corresponding path program 11 times
[2018-09-30 10:58:05,021 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:05,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:05,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:05,022 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:05,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:05,182 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:05,182 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:05,182 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 10:58:05,191 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:58:05,216 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s)
[2018-09-30 10:58:05,216 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:05,218 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:05,591 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:05,611 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:05,611 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 24
[2018-09-30 10:58:05,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states
[2018-09-30 10:58:05,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2018-09-30 10:58:05,613 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:05,613 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 26 states.
[2018-09-30 10:58:05,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:05,787 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions.
[2018-09-30 10:58:05,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2018-09-30 10:58:05,787 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 25
[2018-09-30 10:58:05,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:05,788 INFO L225 Difference]: With dead ends: 29
[2018-09-30 10:58:05,788 INFO L226 Difference]: Without dead ends: 28
[2018-09-30 10:58:05,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:05,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states.
[2018-09-30 10:58:05,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28.
[2018-09-30 10:58:05,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states.
[2018-09-30 10:58:05,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions.
[2018-09-30 10:58:05,793 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25
[2018-09-30 10:58:05,793 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:05,793 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions.
[2018-09-30 10:58:05,793 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states.
[2018-09-30 10:58:05,794 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions.
[2018-09-30 10:58:05,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28
[2018-09-30 10:58:05,794 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:05,794 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 1, 1]
[2018-09-30 10:58:05,795 INFO L423 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:05,795 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:05,795 INFO L82 PathProgramCache]: Analyzing trace with hash 367613688, now seen corresponding path program 12 times
[2018-09-30 10:58:05,795 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:05,795 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:05,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:05,796 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:05,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:05,954 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:05,954 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-30 10:58:05,969 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:58:06,040 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s)
[2018-09-30 10:58:06,040 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:06,042 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:06,204 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:06,225 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:06,226 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26
[2018-09-30 10:58:06,226 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states
[2018-09-30 10:58:06,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2018-09-30 10:58:06,226 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:06,227 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 28 states.
[2018-09-30 10:58:06,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:06,554 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions.
[2018-09-30 10:58:06,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2018-09-30 10:58:06,555 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 27
[2018-09-30 10:58:06,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:06,556 INFO L225 Difference]: With dead ends: 31
[2018-09-30 10:58:06,556 INFO L226 Difference]: Without dead ends: 30
[2018-09-30 10:58:06,556 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:06,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states.
[2018-09-30 10:58:06,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30.
[2018-09-30 10:58:06,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states.
[2018-09-30 10:58:06,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions.
[2018-09-30 10:58:06,561 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 27
[2018-09-30 10:58:06,561 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:06,562 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions.
[2018-09-30 10:58:06,562 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states.
[2018-09-30 10:58:06,562 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions.
[2018-09-30 10:58:06,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30
[2018-09-30 10:58:06,562 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:06,562 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 1, 1]
[2018-09-30 10:58:06,563 INFO L423 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:06,563 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:06,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1089436986, now seen corresponding path program 13 times
[2018-09-30 10:58:06,563 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:06,563 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:06,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:06,564 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:06,564 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:06,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:06,692 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:06,693 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:06,693 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
[2018-09-30 10:58:06,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:06,727 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:07,069 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 0 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:07,089 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:07,089 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 28
[2018-09-30 10:58:07,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states
[2018-09-30 10:58:07,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2018-09-30 10:58:07,090 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:07,090 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 30 states.
[2018-09-30 10:58:07,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:07,466 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions.
[2018-09-30 10:58:07,467 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2018-09-30 10:58:07,467 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 29
[2018-09-30 10:58:07,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:07,468 INFO L225 Difference]: With dead ends: 33
[2018-09-30 10:58:07,468 INFO L226 Difference]: Without dead ends: 32
[2018-09-30 10:58:07,468 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:07,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states.
[2018-09-30 10:58:07,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32.
[2018-09-30 10:58:07,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states.
[2018-09-30 10:58:07,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions.
[2018-09-30 10:58:07,473 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 29
[2018-09-30 10:58:07,473 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:07,473 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions.
[2018-09-30 10:58:07,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states.
[2018-09-30 10:58:07,473 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions.
[2018-09-30 10:58:07,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32
[2018-09-30 10:58:07,474 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:07,474 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 1, 1]
[2018-09-30 10:58:07,475 INFO L423 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:07,475 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:07,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1023075588, now seen corresponding path program 14 times
[2018-09-30 10:58:07,475 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:07,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:07,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:07,476 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:07,476 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:07,648 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:07,649 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:07,649 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
[2018-09-30 10:58:07,658 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:58:07,670 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:58:07,670 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:07,672 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:07,912 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:07,932 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:07,933 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 30
[2018-09-30 10:58:07,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states
[2018-09-30 10:58:07,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2018-09-30 10:58:07,934 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:07,934 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 32 states.
[2018-09-30 10:58:08,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:08,161 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions.
[2018-09-30 10:58:08,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2018-09-30 10:58:08,162 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 31
[2018-09-30 10:58:08,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:08,163 INFO L225 Difference]: With dead ends: 35
[2018-09-30 10:58:08,163 INFO L226 Difference]: Without dead ends: 34
[2018-09-30 10:58:08,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:08,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states.
[2018-09-30 10:58:08,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34.
[2018-09-30 10:58:08,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states.
[2018-09-30 10:58:08,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions.
[2018-09-30 10:58:08,168 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 31
[2018-09-30 10:58:08,169 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:08,169 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions.
[2018-09-30 10:58:08,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states.
[2018-09-30 10:58:08,169 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions.
[2018-09-30 10:58:08,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34
[2018-09-30 10:58:08,170 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:08,170 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 1, 1]
[2018-09-30 10:58:08,170 INFO L423 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:08,170 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:08,170 INFO L82 PathProgramCache]: Analyzing trace with hash 371871806, now seen corresponding path program 15 times
[2018-09-30 10:58:08,171 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:08,171 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:08,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:08,172 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:08,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:08,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:08,379 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:08,379 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:08,379 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
[2018-09-30 10:58:08,387 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:58:08,558 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s)
[2018-09-30 10:58:08,558 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:08,560 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:09,313 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:09,333 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:09,333 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 32
[2018-09-30 10:58:09,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states
[2018-09-30 10:58:09,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2018-09-30 10:58:09,334 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:09,334 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 34 states.
[2018-09-30 10:58:09,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:09,909 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions.
[2018-09-30 10:58:09,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2018-09-30 10:58:09,910 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 33
[2018-09-30 10:58:09,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:09,910 INFO L225 Difference]: With dead ends: 37
[2018-09-30 10:58:09,911 INFO L226 Difference]: Without dead ends: 36
[2018-09-30 10:58:09,911 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:09,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states.
[2018-09-30 10:58:09,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36.
[2018-09-30 10:58:09,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states.
[2018-09-30 10:58:09,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions.
[2018-09-30 10:58:09,915 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 33
[2018-09-30 10:58:09,915 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:09,915 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions.
[2018-09-30 10:58:09,915 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states.
[2018-09-30 10:58:09,916 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions.
[2018-09-30 10:58:09,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36
[2018-09-30 10:58:09,916 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:09,916 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 1, 1]
[2018-09-30 10:58:09,917 INFO L423 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:09,917 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:09,917 INFO L82 PathProgramCache]: Analyzing trace with hash 886521088, now seen corresponding path program 16 times
[2018-09-30 10:58:09,917 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:09,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:09,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:09,918 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:09,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:10,137 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:10,137 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:10,138 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-30 10:58:10,145 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:58:10,159 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:58:10,159 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:10,161 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:10,399 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:10,419 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:10,419 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 34
[2018-09-30 10:58:10,419 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states
[2018-09-30 10:58:10,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2018-09-30 10:58:10,420 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:10,420 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 36 states.
[2018-09-30 10:58:10,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:10,715 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions.
[2018-09-30 10:58:10,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2018-09-30 10:58:10,716 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 35
[2018-09-30 10:58:10,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:10,716 INFO L225 Difference]: With dead ends: 39
[2018-09-30 10:58:10,716 INFO L226 Difference]: Without dead ends: 38
[2018-09-30 10:58:10,717 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:10,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states.
[2018-09-30 10:58:10,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38.
[2018-09-30 10:58:10,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states.
[2018-09-30 10:58:10,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions.
[2018-09-30 10:58:10,722 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 35
[2018-09-30 10:58:10,722 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:10,723 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions.
[2018-09-30 10:58:10,723 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states.
[2018-09-30 10:58:10,723 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions.
[2018-09-30 10:58:10,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38
[2018-09-30 10:58:10,724 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:10,724 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 1, 1]
[2018-09-30 10:58:10,724 INFO L423 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:10,724 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:10,724 INFO L82 PathProgramCache]: Analyzing trace with hash 1543242050, now seen corresponding path program 17 times
[2018-09-30 10:58:10,724 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:10,725 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:10,725 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:10,726 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:10,726 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:10,859 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:10,860 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:10,860 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
[2018-09-30 10:58:10,867 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:58:10,950 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s)
[2018-09-30 10:58:10,951 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:10,953 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:11,415 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:11,435 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:11,436 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 36
[2018-09-30 10:58:11,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states
[2018-09-30 10:58:11,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2018-09-30 10:58:11,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:11,436 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand 38 states.
[2018-09-30 10:58:11,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:11,837 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions.
[2018-09-30 10:58:11,838 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2018-09-30 10:58:11,838 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 37
[2018-09-30 10:58:11,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:11,838 INFO L225 Difference]: With dead ends: 41
[2018-09-30 10:58:11,838 INFO L226 Difference]: Without dead ends: 40
[2018-09-30 10:58:11,838 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:11,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states.
[2018-09-30 10:58:11,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40.
[2018-09-30 10:58:11,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states.
[2018-09-30 10:58:11,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions.
[2018-09-30 10:58:11,848 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 37
[2018-09-30 10:58:11,848 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:11,848 INFO L480 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions.
[2018-09-30 10:58:11,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states.
[2018-09-30 10:58:11,849 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions.
[2018-09-30 10:58:11,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40
[2018-09-30 10:58:11,849 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:11,849 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 1, 1]
[2018-09-30 10:58:11,850 INFO L423 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:11,850 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:11,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1291894020, now seen corresponding path program 18 times
[2018-09-30 10:58:11,850 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:11,850 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:11,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:11,851 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:11,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:12,268 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:12,269 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:12,269 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
[2018-09-30 10:58:12,276 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:58:12,293 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s)
[2018-09-30 10:58:12,293 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:12,295 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:12,785 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 0 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:12,806 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:12,806 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 38
[2018-09-30 10:58:12,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 40 states
[2018-09-30 10:58:12,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants.
[2018-09-30 10:58:12,807 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:12,807 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 40 states.
[2018-09-30 10:58:13,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:13,539 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions.
[2018-09-30 10:58:13,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2018-09-30 10:58:13,540 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 39
[2018-09-30 10:58:13,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:13,540 INFO L225 Difference]: With dead ends: 43
[2018-09-30 10:58:13,540 INFO L226 Difference]: Without dead ends: 42
[2018-09-30 10:58:13,541 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:13,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states.
[2018-09-30 10:58:13,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42.
[2018-09-30 10:58:13,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states.
[2018-09-30 10:58:13,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions.
[2018-09-30 10:58:13,545 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 39
[2018-09-30 10:58:13,546 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:13,546 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions.
[2018-09-30 10:58:13,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 40 states.
[2018-09-30 10:58:13,546 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions.
[2018-09-30 10:58:13,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42
[2018-09-30 10:58:13,546 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:13,547 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 1, 1]
[2018-09-30 10:58:13,547 INFO L423 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:13,547 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:13,547 INFO L82 PathProgramCache]: Analyzing trace with hash 264605766, now seen corresponding path program 19 times
[2018-09-30 10:58:13,547 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:13,547 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:13,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:13,548 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:13,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:13,693 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:13,693 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:13,693 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
[2018-09-30 10:58:13,701 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:13,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:13,727 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 380 backedges. 0 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:14,068 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:14,068 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 40
[2018-09-30 10:58:14,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states
[2018-09-30 10:58:14,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2018-09-30 10:58:14,069 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:14,069 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 42 states.
[2018-09-30 10:58:14,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:14,461 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions.
[2018-09-30 10:58:14,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2018-09-30 10:58:14,461 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 41
[2018-09-30 10:58:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:14,462 INFO L225 Difference]: With dead ends: 45
[2018-09-30 10:58:14,462 INFO L226 Difference]: Without dead ends: 44
[2018-09-30 10:58:14,462 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:14,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states.
[2018-09-30 10:58:14,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44.
[2018-09-30 10:58:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states.
[2018-09-30 10:58:14,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 44 transitions.
[2018-09-30 10:58:14,467 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 44 transitions. Word has length 41
[2018-09-30 10:58:14,467 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:14,467 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 44 transitions.
[2018-09-30 10:58:14,467 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states.
[2018-09-30 10:58:14,468 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 44 transitions.
[2018-09-30 10:58:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44
[2018-09-30 10:58:14,468 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:14,468 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 1, 1]
[2018-09-30 10:58:14,469 INFO L423 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:14,469 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:14,469 INFO L82 PathProgramCache]: Analyzing trace with hash 883071752, now seen corresponding path program 20 times
[2018-09-30 10:58:14,469 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:14,469 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:14,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:14,470 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:14,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:14,678 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:14,678 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null)
Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-30 10:58:14,686 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:58:14,699 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:58:14,699 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:14,701 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:14,939 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 0 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:14,961 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:14,962 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 42
[2018-09-30 10:58:14,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 44 states
[2018-09-30 10:58:14,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants.
[2018-09-30 10:58:14,962 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:14,962 INFO L87 Difference]: Start difference. First operand 44 states and 44 transitions. Second operand 44 states.
[2018-09-30 10:58:15,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:15,385 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions.
[2018-09-30 10:58:15,385 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2018-09-30 10:58:15,385 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 43
[2018-09-30 10:58:15,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:15,386 INFO L225 Difference]: With dead ends: 47
[2018-09-30 10:58:15,386 INFO L226 Difference]: Without dead ends: 46
[2018-09-30 10:58:15,386 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:15,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states.
[2018-09-30 10:58:15,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46.
[2018-09-30 10:58:15,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states.
[2018-09-30 10:58:15,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions.
[2018-09-30 10:58:15,393 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 43
[2018-09-30 10:58:15,393 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:15,393 INFO L480 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions.
[2018-09-30 10:58:15,394 INFO L481 AbstractCegarLoop]: Interpolant automaton has 44 states.
[2018-09-30 10:58:15,394 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions.
[2018-09-30 10:58:15,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46
[2018-09-30 10:58:15,394 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:15,395 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 1, 1]
[2018-09-30 10:58:15,395 INFO L423 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:15,395 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:15,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1771569846, now seen corresponding path program 21 times
[2018-09-30 10:58:15,395 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:15,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:15,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:15,396 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:15,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:15,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:15,636 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:15,636 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 10:58:15,643 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:58:15,671 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 22 check-sat command(s)
[2018-09-30 10:58:15,671 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:15,674 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 0 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:15,963 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:15,963 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 44
[2018-09-30 10:58:15,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states
[2018-09-30 10:58:15,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2018-09-30 10:58:15,964 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:15,964 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand 46 states.
[2018-09-30 10:58:16,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:16,259 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions.
[2018-09-30 10:58:16,261 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2018-09-30 10:58:16,262 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 45
[2018-09-30 10:58:16,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:16,263 INFO L225 Difference]: With dead ends: 49
[2018-09-30 10:58:16,263 INFO L226 Difference]: Without dead ends: 48
[2018-09-30 10:58:16,263 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:16,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states.
[2018-09-30 10:58:16,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48.
[2018-09-30 10:58:16,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states.
[2018-09-30 10:58:16,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions.
[2018-09-30 10:58:16,269 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 45
[2018-09-30 10:58:16,269 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:16,269 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions.
[2018-09-30 10:58:16,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states.
[2018-09-30 10:58:16,269 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions.
[2018-09-30 10:58:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48
[2018-09-30 10:58:16,270 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:16,270 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 1, 1]
[2018-09-30 10:58:16,270 INFO L423 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:16,270 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:16,271 INFO L82 PathProgramCache]: Analyzing trace with hash -1671571700, now seen corresponding path program 22 times
[2018-09-30 10:58:16,271 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:16,271 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:16,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:16,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:16,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:16,466 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:16,467 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:16,467 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
[2018-09-30 10:58:16,474 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:58:16,488 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:58:16,489 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:16,492 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:16,769 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 0 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:16,796 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:16,796 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 46
[2018-09-30 10:58:16,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 48 states
[2018-09-30 10:58:16,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants.
[2018-09-30 10:58:16,797 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:16,797 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand 48 states.
[2018-09-30 10:58:17,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:17,173 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions.
[2018-09-30 10:58:17,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2018-09-30 10:58:17,174 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 47
[2018-09-30 10:58:17,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:17,174 INFO L225 Difference]: With dead ends: 51
[2018-09-30 10:58:17,174 INFO L226 Difference]: Without dead ends: 50
[2018-09-30 10:58:17,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:17,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states.
[2018-09-30 10:58:17,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50.
[2018-09-30 10:58:17,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states.
[2018-09-30 10:58:17,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions.
[2018-09-30 10:58:17,179 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 47
[2018-09-30 10:58:17,179 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:17,179 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions.
[2018-09-30 10:58:17,179 INFO L481 AbstractCegarLoop]: Interpolant automaton has 48 states.
[2018-09-30 10:58:17,179 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions.
[2018-09-30 10:58:17,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50
[2018-09-30 10:58:17,180 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:17,180 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 1, 1]
[2018-09-30 10:58:17,180 INFO L423 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:17,180 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:17,181 INFO L82 PathProgramCache]: Analyzing trace with hash -62633906, now seen corresponding path program 23 times
[2018-09-30 10:58:17,181 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:17,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:17,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:17,182 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:17,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:17,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:18,017 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:18,018 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:18,018 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 10:58:18,025 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:58:18,046 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s)
[2018-09-30 10:58:18,046 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:18,048 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:18,360 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:18,360 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24] total 48
[2018-09-30 10:58:18,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states
[2018-09-30 10:58:18,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2018-09-30 10:58:18,361 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:18,361 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 50 states.
[2018-09-30 10:58:18,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:18,703 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions.
[2018-09-30 10:58:18,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2018-09-30 10:58:18,704 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 49
[2018-09-30 10:58:18,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:18,704 INFO L225 Difference]: With dead ends: 53
[2018-09-30 10:58:18,704 INFO L226 Difference]: Without dead ends: 52
[2018-09-30 10:58:18,705 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:18,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states.
[2018-09-30 10:58:18,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52.
[2018-09-30 10:58:18,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states.
[2018-09-30 10:58:18,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions.
[2018-09-30 10:58:18,708 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 49
[2018-09-30 10:58:18,709 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:18,709 INFO L480 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions.
[2018-09-30 10:58:18,709 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states.
[2018-09-30 10:58:18,709 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions.
[2018-09-30 10:58:18,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52
[2018-09-30 10:58:18,711 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:18,711 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 1, 1]
[2018-09-30 10:58:18,711 INFO L423 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:18,711 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:18,711 INFO L82 PathProgramCache]: Analyzing trace with hash -61640432, now seen corresponding path program 24 times
[2018-09-30 10:58:18,711 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:18,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:18,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:18,712 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:18,712 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:19,539 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:19,539 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
[2018-09-30 10:58:19,552 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:58:19,573 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 25 check-sat command(s)
[2018-09-30 10:58:19,574 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:19,575 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:19,869 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:19,889 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:19,889 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 50
[2018-09-30 10:58:19,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 52 states
[2018-09-30 10:58:19,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants.
[2018-09-30 10:58:19,890 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:19,890 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 52 states.
[2018-09-30 10:58:20,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:20,223 INFO L93 Difference]: Finished difference Result 55 states and 55 transitions.
[2018-09-30 10:58:20,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2018-09-30 10:58:20,224 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 51
[2018-09-30 10:58:20,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:20,224 INFO L225 Difference]: With dead ends: 55
[2018-09-30 10:58:20,224 INFO L226 Difference]: Without dead ends: 54
[2018-09-30 10:58:20,225 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:20,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states.
[2018-09-30 10:58:20,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54.
[2018-09-30 10:58:20,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states.
[2018-09-30 10:58:20,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions.
[2018-09-30 10:58:20,227 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 51
[2018-09-30 10:58:20,227 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:20,227 INFO L480 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions.
[2018-09-30 10:58:20,227 INFO L481 AbstractCegarLoop]: Interpolant automaton has 52 states.
[2018-09-30 10:58:20,228 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions.
[2018-09-30 10:58:20,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54
[2018-09-30 10:58:20,228 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:20,228 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 1, 1]
[2018-09-30 10:58:20,228 INFO L423 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:20,228 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:20,229 INFO L82 PathProgramCache]: Analyzing trace with hash 893088082, now seen corresponding path program 25 times
[2018-09-30 10:58:20,229 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:20,229 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:20,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:20,229 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:20,229 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:20,428 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:20,428 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:20,428 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
[2018-09-30 10:58:20,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:20,453 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:21,139 INFO L134 CoverageAnalysis]: Checked inductivity of 650 backedges. 0 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:21,160 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:21,160 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 26] total 52
[2018-09-30 10:58:21,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states
[2018-09-30 10:58:21,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants.
[2018-09-30 10:58:21,161 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:21,161 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand 54 states.
[2018-09-30 10:58:21,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:21,525 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions.
[2018-09-30 10:58:21,525 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2018-09-30 10:58:21,525 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 53
[2018-09-30 10:58:21,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:21,526 INFO L225 Difference]: With dead ends: 57
[2018-09-30 10:58:21,526 INFO L226 Difference]: Without dead ends: 56
[2018-09-30 10:58:21,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:21,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states.
[2018-09-30 10:58:21,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56.
[2018-09-30 10:58:21,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states.
[2018-09-30 10:58:21,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions.
[2018-09-30 10:58:21,530 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 53
[2018-09-30 10:58:21,530 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:21,531 INFO L480 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions.
[2018-09-30 10:58:21,531 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states.
[2018-09-30 10:58:21,531 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions.
[2018-09-30 10:58:21,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56
[2018-09-30 10:58:21,531 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:21,532 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 1, 1]
[2018-09-30 10:58:21,532 INFO L423 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:21,532 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:21,532 INFO L82 PathProgramCache]: Analyzing trace with hash -735811308, now seen corresponding path program 26 times
[2018-09-30 10:58:21,532 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:21,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:21,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:21,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:21,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:21,739 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:21,740 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:21,740 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
[2018-09-30 10:58:21,747 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:58:21,761 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:58:21,761 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:21,763 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:22,112 INFO L134 CoverageAnalysis]: Checked inductivity of 702 backedges. 0 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:22,132 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:22,133 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 54
[2018-09-30 10:58:22,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 56 states
[2018-09-30 10:58:22,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants.
[2018-09-30 10:58:22,134 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:22,134 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 56 states.
[2018-09-30 10:58:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:22,706 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions.
[2018-09-30 10:58:22,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2018-09-30 10:58:22,707 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 55
[2018-09-30 10:58:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:22,707 INFO L225 Difference]: With dead ends: 59
[2018-09-30 10:58:22,707 INFO L226 Difference]: Without dead ends: 58
[2018-09-30 10:58:22,707 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:22,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states.
[2018-09-30 10:58:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58.
[2018-09-30 10:58:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states.
[2018-09-30 10:58:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 58 transitions.
[2018-09-30 10:58:22,710 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 58 transitions. Word has length 55
[2018-09-30 10:58:22,711 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:22,711 INFO L480 AbstractCegarLoop]: Abstraction has 58 states and 58 transitions.
[2018-09-30 10:58:22,711 INFO L481 AbstractCegarLoop]: Interpolant automaton has 56 states.
[2018-09-30 10:58:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 58 transitions.
[2018-09-30 10:58:22,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58
[2018-09-30 10:58:22,712 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:22,712 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 1, 1]
[2018-09-30 10:58:22,712 INFO L423 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:22,712 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:22,712 INFO L82 PathProgramCache]: Analyzing trace with hash 1554937942, now seen corresponding path program 27 times
[2018-09-30 10:58:22,712 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:22,712 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:22,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:22,713 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:22,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:22,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:23,455 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:23,455 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:23,456 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
[2018-09-30 10:58:23,464 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:58:23,487 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 28 check-sat command(s)
[2018-09-30 10:58:23,487 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:23,489 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:24,030 INFO L134 CoverageAnalysis]: Checked inductivity of 756 backedges. 0 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:24,050 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:24,050 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 28] total 56
[2018-09-30 10:58:24,050 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states
[2018-09-30 10:58:24,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants.
[2018-09-30 10:58:24,051 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:24,051 INFO L87 Difference]: Start difference. First operand 58 states and 58 transitions. Second operand 58 states.
[2018-09-30 10:58:24,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:24,551 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions.
[2018-09-30 10:58:24,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2018-09-30 10:58:24,551 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 57
[2018-09-30 10:58:24,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:24,551 INFO L225 Difference]: With dead ends: 61
[2018-09-30 10:58:24,552 INFO L226 Difference]: Without dead ends: 60
[2018-09-30 10:58:24,552 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:24,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states.
[2018-09-30 10:58:24,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60.
[2018-09-30 10:58:24,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states.
[2018-09-30 10:58:24,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions.
[2018-09-30 10:58:24,555 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 57
[2018-09-30 10:58:24,555 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:24,555 INFO L480 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions.
[2018-09-30 10:58:24,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states.
[2018-09-30 10:58:24,555 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions.
[2018-09-30 10:58:24,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60
[2018-09-30 10:58:24,556 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:24,556 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 1, 1]
[2018-09-30 10:58:24,556 INFO L423 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:24,556 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:24,557 INFO L82 PathProgramCache]: Analyzing trace with hash -353255656, now seen corresponding path program 28 times
[2018-09-30 10:58:24,557 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:24,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:24,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:24,558 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:24,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:24,740 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:24,740 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:24,740 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
[2018-09-30 10:58:24,751 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:58:24,772 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:58:24,772 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:24,773 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:25,618 INFO L134 CoverageAnalysis]: Checked inductivity of 812 backedges. 0 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:25,639 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:25,639 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 58
[2018-09-30 10:58:25,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 60 states
[2018-09-30 10:58:25,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants.
[2018-09-30 10:58:25,640 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:25,640 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 60 states.
[2018-09-30 10:58:26,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:26,277 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions.
[2018-09-30 10:58:26,277 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2018-09-30 10:58:26,277 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 59
[2018-09-30 10:58:26,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:26,277 INFO L225 Difference]: With dead ends: 63
[2018-09-30 10:58:26,277 INFO L226 Difference]: Without dead ends: 62
[2018-09-30 10:58:26,278 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:26,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states.
[2018-09-30 10:58:26,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62.
[2018-09-30 10:58:26,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states.
[2018-09-30 10:58:26,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions.
[2018-09-30 10:58:26,284 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 59
[2018-09-30 10:58:26,285 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:26,285 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions.
[2018-09-30 10:58:26,285 INFO L481 AbstractCegarLoop]: Interpolant automaton has 60 states.
[2018-09-30 10:58:26,285 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions.
[2018-09-30 10:58:26,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62
[2018-09-30 10:58:26,286 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:26,286 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 1, 1]
[2018-09-30 10:58:26,286 INFO L423 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:26,287 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:26,287 INFO L82 PathProgramCache]: Analyzing trace with hash -176267942, now seen corresponding path program 29 times
[2018-09-30 10:58:26,287 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:26,287 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:26,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:26,288 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:26,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:26,524 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:26,524 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 10:58:26,532 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:58:26,558 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 30 check-sat command(s)
[2018-09-30 10:58:26,558 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:26,560 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:27,208 INFO L134 CoverageAnalysis]: Checked inductivity of 870 backedges. 0 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:27,227 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:27,227 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 30] total 60
[2018-09-30 10:58:27,228 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states
[2018-09-30 10:58:27,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants.
[2018-09-30 10:58:27,228 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:27,229 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 62 states.
[2018-09-30 10:58:27,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:27,735 INFO L93 Difference]: Finished difference Result 65 states and 65 transitions.
[2018-09-30 10:58:27,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2018-09-30 10:58:27,735 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 61
[2018-09-30 10:58:27,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:27,736 INFO L225 Difference]: With dead ends: 65
[2018-09-30 10:58:27,736 INFO L226 Difference]: Without dead ends: 64
[2018-09-30 10:58:27,736 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:27,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states.
[2018-09-30 10:58:27,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64.
[2018-09-30 10:58:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states.
[2018-09-30 10:58:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 64 transitions.
[2018-09-30 10:58:27,739 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 64 transitions. Word has length 61
[2018-09-30 10:58:27,739 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:27,739 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 64 transitions.
[2018-09-30 10:58:27,739 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states.
[2018-09-30 10:58:27,739 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 64 transitions.
[2018-09-30 10:58:27,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64
[2018-09-30 10:58:27,739 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:27,739 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 1, 1]
[2018-09-30 10:58:27,740 INFO L423 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:27,740 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:27,740 INFO L82 PathProgramCache]: Analyzing trace with hash -1889766628, now seen corresponding path program 30 times
[2018-09-30 10:58:27,740 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:27,740 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:27,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:27,741 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:27,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:27,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:27,971 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:27,972 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:27,972 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
[2018-09-30 10:58:27,981 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:58:28,011 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 31 check-sat command(s)
[2018-09-30 10:58:28,011 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:28,013 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:28,472 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 0 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:28,491 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:28,491 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 62
[2018-09-30 10:58:28,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 64 states
[2018-09-30 10:58:28,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants.
[2018-09-30 10:58:28,492 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:28,492 INFO L87 Difference]: Start difference. First operand 64 states and 64 transitions. Second operand 64 states.
[2018-09-30 10:58:28,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:28,968 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions.
[2018-09-30 10:58:28,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2018-09-30 10:58:28,968 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 63
[2018-09-30 10:58:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:28,969 INFO L225 Difference]: With dead ends: 67
[2018-09-30 10:58:28,969 INFO L226 Difference]: Without dead ends: 66
[2018-09-30 10:58:28,969 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:28,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states.
[2018-09-30 10:58:28,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66.
[2018-09-30 10:58:28,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states.
[2018-09-30 10:58:28,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 66 transitions.
[2018-09-30 10:58:28,972 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 66 transitions. Word has length 63
[2018-09-30 10:58:28,972 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:28,972 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 66 transitions.
[2018-09-30 10:58:28,972 INFO L481 AbstractCegarLoop]: Interpolant automaton has 64 states.
[2018-09-30 10:58:28,972 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 66 transitions.
[2018-09-30 10:58:28,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66
[2018-09-30 10:58:28,973 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:28,973 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 1, 1]
[2018-09-30 10:58:28,973 INFO L423 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:28,973 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:28,973 INFO L82 PathProgramCache]: Analyzing trace with hash 705437790, now seen corresponding path program 31 times
[2018-09-30 10:58:28,973 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:28,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:28,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:28,974 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:28,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:28,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:29,487 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:29,488 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:29,488 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 10:58:29,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:29,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:29,515 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:29,961 INFO L134 CoverageAnalysis]: Checked inductivity of 992 backedges. 0 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:29,981 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:29,981 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32] total 64
[2018-09-30 10:58:29,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states
[2018-09-30 10:58:29,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants.
[2018-09-30 10:58:29,982 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:29,982 INFO L87 Difference]: Start difference. First operand 66 states and 66 transitions. Second operand 66 states.
[2018-09-30 10:58:30,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:30,507 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions.
[2018-09-30 10:58:30,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2018-09-30 10:58:30,507 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 65
[2018-09-30 10:58:30,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:30,508 INFO L225 Difference]: With dead ends: 69
[2018-09-30 10:58:30,508 INFO L226 Difference]: Without dead ends: 68
[2018-09-30 10:58:30,509 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:30,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states.
[2018-09-30 10:58:30,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68.
[2018-09-30 10:58:30,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states.
[2018-09-30 10:58:30,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 68 transitions.
[2018-09-30 10:58:30,511 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 68 transitions. Word has length 65
[2018-09-30 10:58:30,512 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:30,512 INFO L480 AbstractCegarLoop]: Abstraction has 68 states and 68 transitions.
[2018-09-30 10:58:30,512 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states.
[2018-09-30 10:58:30,512 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 68 transitions.
[2018-09-30 10:58:30,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68
[2018-09-30 10:58:30,512 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:30,512 INFO L375 BasicCegarLoop]: trace histogram [33, 32, 1, 1]
[2018-09-30 10:58:30,513 INFO L423 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:30,513 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:30,513 INFO L82 PathProgramCache]: Analyzing trace with hash -679115488, now seen corresponding path program 32 times
[2018-09-30 10:58:30,513 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:30,513 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:30,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:30,514 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:30,514 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:30,811 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:30,812 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:30,812 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 10:58:30,819 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:58:30,837 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:58:30,837 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:30,839 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:31,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1056 backedges. 0 proven. 1056 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:31,540 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:31,541 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 66
[2018-09-30 10:58:31,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 68 states
[2018-09-30 10:58:31,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants.
[2018-09-30 10:58:31,542 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:31,542 INFO L87 Difference]: Start difference. First operand 68 states and 68 transitions. Second operand 68 states.
[2018-09-30 10:58:32,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:32,115 INFO L93 Difference]: Finished difference Result 71 states and 71 transitions.
[2018-09-30 10:58:32,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2018-09-30 10:58:32,116 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 67
[2018-09-30 10:58:32,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:32,116 INFO L225 Difference]: With dead ends: 71
[2018-09-30 10:58:32,116 INFO L226 Difference]: Without dead ends: 70
[2018-09-30 10:58:32,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:32,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states.
[2018-09-30 10:58:32,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70.
[2018-09-30 10:58:32,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states.
[2018-09-30 10:58:32,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions.
[2018-09-30 10:58:32,120 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 67
[2018-09-30 10:58:32,120 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:32,120 INFO L480 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions.
[2018-09-30 10:58:32,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 68 states.
[2018-09-30 10:58:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions.
[2018-09-30 10:58:32,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70
[2018-09-30 10:58:32,121 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:32,121 INFO L375 BasicCegarLoop]: trace histogram [34, 33, 1, 1]
[2018-09-30 10:58:32,121 INFO L423 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:32,121 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:32,121 INFO L82 PathProgramCache]: Analyzing trace with hash 205046114, now seen corresponding path program 33 times
[2018-09-30 10:58:32,121 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:32,122 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:32,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:32,122 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:32,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:32,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:32,875 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:32,875 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 10:58:32,882 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:58:32,912 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 34 check-sat command(s)
[2018-09-30 10:58:32,912 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:32,914 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:33,415 INFO L134 CoverageAnalysis]: Checked inductivity of 1122 backedges. 0 proven. 1122 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:33,435 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:33,435 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 68
[2018-09-30 10:58:33,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states
[2018-09-30 10:58:33,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants.
[2018-09-30 10:58:33,436 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:33,436 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 70 states.
[2018-09-30 10:58:34,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:34,174 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions.
[2018-09-30 10:58:34,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2018-09-30 10:58:34,174 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 69
[2018-09-30 10:58:34,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:34,175 INFO L225 Difference]: With dead ends: 73
[2018-09-30 10:58:34,175 INFO L226 Difference]: Without dead ends: 72
[2018-09-30 10:58:34,175 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:34,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states.
[2018-09-30 10:58:34,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72.
[2018-09-30 10:58:34,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states.
[2018-09-30 10:58:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions.
[2018-09-30 10:58:34,178 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 69
[2018-09-30 10:58:34,178 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:34,178 INFO L480 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions.
[2018-09-30 10:58:34,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states.
[2018-09-30 10:58:34,178 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions.
[2018-09-30 10:58:34,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72
[2018-09-30 10:58:34,178 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:34,178 INFO L375 BasicCegarLoop]: trace histogram [35, 34, 1, 1]
[2018-09-30 10:58:34,179 INFO L423 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:34,179 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:34,179 INFO L82 PathProgramCache]: Analyzing trace with hash -519178972, now seen corresponding path program 34 times
[2018-09-30 10:58:34,179 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:34,179 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:34,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:34,180 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:34,180 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:34,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:34,411 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:34,411 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 10:58:34,418 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:58:34,437 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:58:34,438 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:34,439 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:35,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1190 backedges. 0 proven. 1190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:35,045 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:35,046 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 70
[2018-09-30 10:58:35,046 INFO L459 AbstractCegarLoop]: Interpolant automaton has 72 states
[2018-09-30 10:58:35,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants.
[2018-09-30 10:58:35,047 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:35,047 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 72 states.
[2018-09-30 10:58:35,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:35,606 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions.
[2018-09-30 10:58:35,606 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2018-09-30 10:58:35,606 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 71
[2018-09-30 10:58:35,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:35,607 INFO L225 Difference]: With dead ends: 75
[2018-09-30 10:58:35,607 INFO L226 Difference]: Without dead ends: 74
[2018-09-30 10:58:35,608 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:35,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states.
[2018-09-30 10:58:35,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74.
[2018-09-30 10:58:35,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states.
[2018-09-30 10:58:35,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 74 transitions.
[2018-09-30 10:58:35,611 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 74 transitions. Word has length 71
[2018-09-30 10:58:35,611 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:35,611 INFO L480 AbstractCegarLoop]: Abstraction has 74 states and 74 transitions.
[2018-09-30 10:58:35,611 INFO L481 AbstractCegarLoop]: Interpolant automaton has 72 states.
[2018-09-30 10:58:35,612 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 74 transitions.
[2018-09-30 10:58:35,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74
[2018-09-30 10:58:35,612 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:35,612 INFO L375 BasicCegarLoop]: trace histogram [36, 35, 1, 1]
[2018-09-30 10:58:35,612 INFO L423 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:35,612 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:35,613 INFO L82 PathProgramCache]: Analyzing trace with hash -714784666, now seen corresponding path program 35 times
[2018-09-30 10:58:35,613 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:35,613 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:35,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:35,613 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:35,613 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:36,123 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:36,123 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:36,123 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
[2018-09-30 10:58:36,130 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:58:36,163 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 36 check-sat command(s)
[2018-09-30 10:58:36,164 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:36,166 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:36,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 1260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:36,684 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:36,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 36] total 72
[2018-09-30 10:58:36,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states
[2018-09-30 10:58:36,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants.
[2018-09-30 10:58:36,686 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:36,686 INFO L87 Difference]: Start difference. First operand 74 states and 74 transitions. Second operand 74 states.
[2018-09-30 10:58:37,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:37,782 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions.
[2018-09-30 10:58:37,783 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2018-09-30 10:58:37,783 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 73
[2018-09-30 10:58:37,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:37,783 INFO L225 Difference]: With dead ends: 77
[2018-09-30 10:58:37,783 INFO L226 Difference]: Without dead ends: 76
[2018-09-30 10:58:37,784 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:37,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states.
[2018-09-30 10:58:37,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76.
[2018-09-30 10:58:37,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states.
[2018-09-30 10:58:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 76 transitions.
[2018-09-30 10:58:37,787 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 76 transitions. Word has length 73
[2018-09-30 10:58:37,787 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:37,787 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 76 transitions.
[2018-09-30 10:58:37,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states.
[2018-09-30 10:58:37,787 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 76 transitions.
[2018-09-30 10:58:37,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76
[2018-09-30 10:58:37,787 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:37,787 INFO L375 BasicCegarLoop]: trace histogram [37, 36, 1, 1]
[2018-09-30 10:58:37,787 INFO L423 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:37,788 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:37,788 INFO L82 PathProgramCache]: Analyzing trace with hash 286704424, now seen corresponding path program 36 times
[2018-09-30 10:58:37,788 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:37,788 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:37,788 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:37,788 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:37,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:38,124 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:38,124 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:38,124 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 10:58:38,132 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:58:38,168 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 37 check-sat command(s)
[2018-09-30 10:58:38,168 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:38,170 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:38,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1332 backedges. 0 proven. 1332 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:38,734 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:38,734 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 74
[2018-09-30 10:58:38,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states
[2018-09-30 10:58:38,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants.
[2018-09-30 10:58:38,735 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:38,735 INFO L87 Difference]: Start difference. First operand 76 states and 76 transitions. Second operand 76 states.
[2018-09-30 10:58:39,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:39,338 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions.
[2018-09-30 10:58:39,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2018-09-30 10:58:39,338 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 75
[2018-09-30 10:58:39,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:39,339 INFO L225 Difference]: With dead ends: 79
[2018-09-30 10:58:39,339 INFO L226 Difference]: Without dead ends: 78
[2018-09-30 10:58:39,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:39,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states.
[2018-09-30 10:58:39,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78.
[2018-09-30 10:58:39,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states.
[2018-09-30 10:58:39,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 78 transitions.
[2018-09-30 10:58:39,343 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 78 transitions. Word has length 75
[2018-09-30 10:58:39,343 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:39,343 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 78 transitions.
[2018-09-30 10:58:39,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 76 states.
[2018-09-30 10:58:39,343 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 78 transitions.
[2018-09-30 10:58:39,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78
[2018-09-30 10:58:39,344 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:39,344 INFO L375 BasicCegarLoop]: trace histogram [38, 37, 1, 1]
[2018-09-30 10:58:39,344 INFO L423 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:39,344 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:39,344 INFO L82 PathProgramCache]: Analyzing trace with hash 645045610, now seen corresponding path program 37 times
[2018-09-30 10:58:39,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:39,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:39,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:39,345 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:39,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:40,017 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:40,017 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:40,017 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
[2018-09-30 10:58:40,024 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:40,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:40,045 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:40,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1406 backedges. 0 proven. 1406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:40,590 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:40,590 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 38] total 76
[2018-09-30 10:58:40,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states
[2018-09-30 10:58:40,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants.
[2018-09-30 10:58:40,591 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:40,591 INFO L87 Difference]: Start difference. First operand 78 states and 78 transitions. Second operand 78 states.
[2018-09-30 10:58:41,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:41,384 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions.
[2018-09-30 10:58:41,384 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2018-09-30 10:58:41,384 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 77
[2018-09-30 10:58:41,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:41,384 INFO L225 Difference]: With dead ends: 81
[2018-09-30 10:58:41,385 INFO L226 Difference]: Without dead ends: 80
[2018-09-30 10:58:41,385 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:41,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states.
[2018-09-30 10:58:41,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80.
[2018-09-30 10:58:41,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states.
[2018-09-30 10:58:41,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions.
[2018-09-30 10:58:41,388 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 77
[2018-09-30 10:58:41,389 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:41,389 INFO L480 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions.
[2018-09-30 10:58:41,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states.
[2018-09-30 10:58:41,389 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions.
[2018-09-30 10:58:41,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80
[2018-09-30 10:58:41,389 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:41,390 INFO L375 BasicCegarLoop]: trace histogram [39, 38, 1, 1]
[2018-09-30 10:58:41,390 INFO L423 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:41,390 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:41,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1413541676, now seen corresponding path program 38 times
[2018-09-30 10:58:41,390 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:41,390 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:41,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:41,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:41,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:42,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:42,658 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:42,658 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
[2018-09-30 10:58:42,666 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:58:42,685 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:58:42,685 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:42,687 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:43,243 INFO L134 CoverageAnalysis]: Checked inductivity of 1482 backedges. 0 proven. 1482 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:43,262 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:43,263 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 78
[2018-09-30 10:58:43,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 80 states
[2018-09-30 10:58:43,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants.
[2018-09-30 10:58:43,264 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:43,264 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 80 states.
[2018-09-30 10:58:44,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:44,086 INFO L93 Difference]: Finished difference Result 83 states and 83 transitions.
[2018-09-30 10:58:44,086 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2018-09-30 10:58:44,087 INFO L78 Accepts]: Start accepts. Automaton has 80 states. Word has length 79
[2018-09-30 10:58:44,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:44,087 INFO L225 Difference]: With dead ends: 83
[2018-09-30 10:58:44,087 INFO L226 Difference]: Without dead ends: 82
[2018-09-30 10:58:44,087 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:44,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states.
[2018-09-30 10:58:44,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82.
[2018-09-30 10:58:44,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states.
[2018-09-30 10:58:44,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions.
[2018-09-30 10:58:44,091 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 79
[2018-09-30 10:58:44,091 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:44,091 INFO L480 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions.
[2018-09-30 10:58:44,091 INFO L481 AbstractCegarLoop]: Interpolant automaton has 80 states.
[2018-09-30 10:58:44,092 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions.
[2018-09-30 10:58:44,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82
[2018-09-30 10:58:44,092 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:44,092 INFO L375 BasicCegarLoop]: trace histogram [40, 39, 1, 1]
[2018-09-30 10:58:44,092 INFO L423 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:44,093 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:44,093 INFO L82 PathProgramCache]: Analyzing trace with hash 1203886190, now seen corresponding path program 39 times
[2018-09-30 10:58:44,093 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:44,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:44,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:44,094 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:44,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:44,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:44,440 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:44,441 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:44,441 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
[2018-09-30 10:58:44,449 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:58:44,491 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 40 check-sat command(s)
[2018-09-30 10:58:44,491 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:44,493 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 1560 backedges. 0 proven. 1560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:45,327 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:45,327 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 40] total 80
[2018-09-30 10:58:45,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states
[2018-09-30 10:58:45,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants.
[2018-09-30 10:58:45,328 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:45,328 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 82 states.
[2018-09-30 10:58:46,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:46,149 INFO L93 Difference]: Finished difference Result 85 states and 85 transitions.
[2018-09-30 10:58:46,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2018-09-30 10:58:46,149 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 81
[2018-09-30 10:58:46,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:46,150 INFO L225 Difference]: With dead ends: 85
[2018-09-30 10:58:46,150 INFO L226 Difference]: Without dead ends: 84
[2018-09-30 10:58:46,150 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states.
[2018-09-30 10:58:46,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84.
[2018-09-30 10:58:46,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states.
[2018-09-30 10:58:46,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 84 transitions.
[2018-09-30 10:58:46,153 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 84 transitions. Word has length 81
[2018-09-30 10:58:46,153 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:46,153 INFO L480 AbstractCegarLoop]: Abstraction has 84 states and 84 transitions.
[2018-09-30 10:58:46,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states.
[2018-09-30 10:58:46,154 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 84 transitions.
[2018-09-30 10:58:46,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84
[2018-09-30 10:58:46,154 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:46,154 INFO L375 BasicCegarLoop]: trace histogram [41, 40, 1, 1]
[2018-09-30 10:58:46,154 INFO L423 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:46,155 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:46,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1588427056, now seen corresponding path program 40 times
[2018-09-30 10:58:46,155 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:46,155 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:46,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:46,156 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:46,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:46,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:46,466 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:46,467 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
[2018-09-30 10:58:46,474 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:58:46,497 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:58:46,497 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:46,499 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:47,144 INFO L134 CoverageAnalysis]: Checked inductivity of 1640 backedges. 0 proven. 1640 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:47,164 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:47,165 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 82
[2018-09-30 10:58:47,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 84 states
[2018-09-30 10:58:47,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 84 interpolants.
[2018-09-30 10:58:47,166 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:47,166 INFO L87 Difference]: Start difference. First operand 84 states and 84 transitions. Second operand 84 states.
[2018-09-30 10:58:48,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:48,085 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions.
[2018-09-30 10:58:48,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2018-09-30 10:58:48,085 INFO L78 Accepts]: Start accepts. Automaton has 84 states. Word has length 83
[2018-09-30 10:58:48,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:48,086 INFO L225 Difference]: With dead ends: 87
[2018-09-30 10:58:48,086 INFO L226 Difference]: Without dead ends: 86
[2018-09-30 10:58:48,086 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:48,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states.
[2018-09-30 10:58:48,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86.
[2018-09-30 10:58:48,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states.
[2018-09-30 10:58:48,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 86 transitions.
[2018-09-30 10:58:48,090 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 86 transitions. Word has length 83
[2018-09-30 10:58:48,090 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:48,090 INFO L480 AbstractCegarLoop]: Abstraction has 86 states and 86 transitions.
[2018-09-30 10:58:48,090 INFO L481 AbstractCegarLoop]: Interpolant automaton has 84 states.
[2018-09-30 10:58:48,090 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 86 transitions.
[2018-09-30 10:58:48,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86
[2018-09-30 10:58:48,091 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:48,091 INFO L375 BasicCegarLoop]: trace histogram [42, 41, 1, 1]
[2018-09-30 10:58:48,091 INFO L423 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:48,092 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:48,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1765011826, now seen corresponding path program 41 times
[2018-09-30 10:58:48,092 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:48,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:48,092 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:48,093 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:48,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:48,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:48,456 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:48,456 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
[2018-09-30 10:58:48,464 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:58:48,502 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 42 check-sat command(s)
[2018-09-30 10:58:48,502 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:48,506 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:49,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1722 backedges. 0 proven. 1722 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:49,244 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:49,244 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 42] total 84
[2018-09-30 10:58:49,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states
[2018-09-30 10:58:49,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants.
[2018-09-30 10:58:49,245 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:49,245 INFO L87 Difference]: Start difference. First operand 86 states and 86 transitions. Second operand 86 states.
[2018-09-30 10:58:50,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:50,116 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions.
[2018-09-30 10:58:50,116 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2018-09-30 10:58:50,116 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 85
[2018-09-30 10:58:50,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:50,117 INFO L225 Difference]: With dead ends: 89
[2018-09-30 10:58:50,117 INFO L226 Difference]: Without dead ends: 88
[2018-09-30 10:58:50,117 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:50,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states.
[2018-09-30 10:58:50,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88.
[2018-09-30 10:58:50,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states.
[2018-09-30 10:58:50,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 88 transitions.
[2018-09-30 10:58:50,121 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 88 transitions. Word has length 85
[2018-09-30 10:58:50,122 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:50,122 INFO L480 AbstractCegarLoop]: Abstraction has 88 states and 88 transitions.
[2018-09-30 10:58:50,122 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states.
[2018-09-30 10:58:50,122 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 88 transitions.
[2018-09-30 10:58:50,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88
[2018-09-30 10:58:50,123 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:50,123 INFO L375 BasicCegarLoop]: trace histogram [43, 42, 1, 1]
[2018-09-30 10:58:50,123 INFO L423 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:50,123 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:50,124 INFO L82 PathProgramCache]: Analyzing trace with hash -335716044, now seen corresponding path program 42 times
[2018-09-30 10:58:50,124 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:50,124 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:50,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:50,125 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:50,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:50,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:50,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:50,396 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:50,396 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
[2018-09-30 10:58:50,403 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:58:50,446 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 43 check-sat command(s)
[2018-09-30 10:58:50,447 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:50,449 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:51,268 INFO L134 CoverageAnalysis]: Checked inductivity of 1806 backedges. 0 proven. 1806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:51,289 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:51,289 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 86
[2018-09-30 10:58:51,290 INFO L459 AbstractCegarLoop]: Interpolant automaton has 88 states
[2018-09-30 10:58:51,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 88 interpolants.
[2018-09-30 10:58:51,291 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:51,291 INFO L87 Difference]: Start difference. First operand 88 states and 88 transitions. Second operand 88 states.
[2018-09-30 10:58:52,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:52,168 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions.
[2018-09-30 10:58:52,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2018-09-30 10:58:52,169 INFO L78 Accepts]: Start accepts. Automaton has 88 states. Word has length 87
[2018-09-30 10:58:52,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:52,169 INFO L225 Difference]: With dead ends: 91
[2018-09-30 10:58:52,169 INFO L226 Difference]: Without dead ends: 90
[2018-09-30 10:58:52,169 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 86 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:52,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states.
[2018-09-30 10:58:52,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90.
[2018-09-30 10:58:52,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states.
[2018-09-30 10:58:52,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions.
[2018-09-30 10:58:52,173 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 87
[2018-09-30 10:58:52,173 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:52,173 INFO L480 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions.
[2018-09-30 10:58:52,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 88 states.
[2018-09-30 10:58:52,173 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions.
[2018-09-30 10:58:52,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90
[2018-09-30 10:58:52,173 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:52,174 INFO L375 BasicCegarLoop]: trace histogram [44, 43, 1, 1]
[2018-09-30 10:58:52,174 INFO L423 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:52,174 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:52,174 INFO L82 PathProgramCache]: Analyzing trace with hash -500569994, now seen corresponding path program 43 times
[2018-09-30 10:58:52,174 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:52,174 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:52,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:52,175 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:52,175 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:52,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:52,544 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:52,544 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
[2018-09-30 10:58:52,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:52,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:52,576 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:53,300 INFO L134 CoverageAnalysis]: Checked inductivity of 1892 backedges. 0 proven. 1892 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:53,320 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:53,320 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [44, 44] total 88
[2018-09-30 10:58:53,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states
[2018-09-30 10:58:53,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants.
[2018-09-30 10:58:53,322 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:53,322 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 90 states.
[2018-09-30 10:58:54,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:54,199 INFO L93 Difference]: Finished difference Result 93 states and 93 transitions.
[2018-09-30 10:58:54,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2018-09-30 10:58:54,200 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 89
[2018-09-30 10:58:54,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:54,200 INFO L225 Difference]: With dead ends: 93
[2018-09-30 10:58:54,200 INFO L226 Difference]: Without dead ends: 92
[2018-09-30 10:58:54,201 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:54,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states.
[2018-09-30 10:58:54,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92.
[2018-09-30 10:58:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states.
[2018-09-30 10:58:54,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions.
[2018-09-30 10:58:54,203 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 89
[2018-09-30 10:58:54,204 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:54,204 INFO L480 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions.
[2018-09-30 10:58:54,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states.
[2018-09-30 10:58:54,204 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions.
[2018-09-30 10:58:54,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92
[2018-09-30 10:58:54,204 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:54,204 INFO L375 BasicCegarLoop]: trace histogram [45, 44, 1, 1]
[2018-09-30 10:58:54,205 INFO L423 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:54,205 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:54,205 INFO L82 PathProgramCache]: Analyzing trace with hash -11425992, now seen corresponding path program 44 times
[2018-09-30 10:58:54,205 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:54,205 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:54,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:54,206 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:54,206 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:54,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:54,548 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:54,548 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
[2018-09-30 10:58:54,556 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:58:54,577 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:58:54,577 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:54,579 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:55,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1980 backedges. 0 proven. 1980 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:55,545 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:55,546 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 90
[2018-09-30 10:58:55,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 92 states
[2018-09-30 10:58:55,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 92 interpolants.
[2018-09-30 10:58:55,547 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:55,547 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 92 states.
[2018-09-30 10:58:56,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:56,548 INFO L93 Difference]: Finished difference Result 95 states and 95 transitions.
[2018-09-30 10:58:56,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2018-09-30 10:58:56,548 INFO L78 Accepts]: Start accepts. Automaton has 92 states. Word has length 91
[2018-09-30 10:58:56,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:56,549 INFO L225 Difference]: With dead ends: 95
[2018-09-30 10:58:56,549 INFO L226 Difference]: Without dead ends: 94
[2018-09-30 10:58:56,549 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:56,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states.
[2018-09-30 10:58:56,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94.
[2018-09-30 10:58:56,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states.
[2018-09-30 10:58:56,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 94 transitions.
[2018-09-30 10:58:56,553 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 94 transitions. Word has length 91
[2018-09-30 10:58:56,553 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:56,553 INFO L480 AbstractCegarLoop]: Abstraction has 94 states and 94 transitions.
[2018-09-30 10:58:56,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 92 states.
[2018-09-30 10:58:56,553 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 94 transitions.
[2018-09-30 10:58:56,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94
[2018-09-30 10:58:56,554 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:56,554 INFO L375 BasicCegarLoop]: trace histogram [46, 45, 1, 1]
[2018-09-30 10:58:56,554 INFO L423 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:56,555 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:56,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1904524666, now seen corresponding path program 45 times
[2018-09-30 10:58:56,555 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:56,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:56,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:56,556 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:56,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:57,003 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:57,003 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:57,003 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
[2018-09-30 10:58:57,013 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:58:57,122 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 46 check-sat command(s)
[2018-09-30 10:58:57,122 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:57,124 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:57,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2070 backedges. 0 proven. 2070 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:57,968 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:57,969 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [46, 46] total 92
[2018-09-30 10:58:57,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states
[2018-09-30 10:58:57,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants.
[2018-09-30 10:58:57,970 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:57,970 INFO L87 Difference]: Start difference. First operand 94 states and 94 transitions. Second operand 94 states.
[2018-09-30 10:58:58,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:58,920 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions.
[2018-09-30 10:58:58,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2018-09-30 10:58:58,921 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 93
[2018-09-30 10:58:58,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:58,921 INFO L225 Difference]: With dead ends: 97
[2018-09-30 10:58:58,921 INFO L226 Difference]: Without dead ends: 96
[2018-09-30 10:58:58,922 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:58,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states.
[2018-09-30 10:58:58,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96.
[2018-09-30 10:58:58,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states.
[2018-09-30 10:58:58,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 96 transitions.
[2018-09-30 10:58:58,924 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 96 transitions. Word has length 93
[2018-09-30 10:58:58,925 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:58,925 INFO L480 AbstractCegarLoop]: Abstraction has 96 states and 96 transitions.
[2018-09-30 10:58:58,925 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states.
[2018-09-30 10:58:58,925 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 96 transitions.
[2018-09-30 10:58:58,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96
[2018-09-30 10:58:58,925 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:58,925 INFO L375 BasicCegarLoop]: trace histogram [47, 46, 1, 1]
[2018-09-30 10:58:58,926 INFO L423 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:58,926 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:58,926 INFO L82 PathProgramCache]: Analyzing trace with hash 592137020, now seen corresponding path program 46 times
[2018-09-30 10:58:58,926 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:58,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:58,926 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:58,926 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:58,927 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:59,333 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:59,333 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
[2018-09-30 10:58:59,341 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:58:59,366 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:58:59,366 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:59,368 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 2162 backedges. 0 proven. 2162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:00,297 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:00,297 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 94
[2018-09-30 10:59:00,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 96 states
[2018-09-30 10:59:00,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants.
[2018-09-30 10:59:00,299 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:00,299 INFO L87 Difference]: Start difference. First operand 96 states and 96 transitions. Second operand 96 states.
[2018-09-30 10:59:01,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:01,341 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions.
[2018-09-30 10:59:01,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states.
[2018-09-30 10:59:01,341 INFO L78 Accepts]: Start accepts. Automaton has 96 states. Word has length 95
[2018-09-30 10:59:01,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:01,342 INFO L225 Difference]: With dead ends: 99
[2018-09-30 10:59:01,342 INFO L226 Difference]: Without dead ends: 98
[2018-09-30 10:59:01,342 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:01,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states.
[2018-09-30 10:59:01,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98.
[2018-09-30 10:59:01,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states.
[2018-09-30 10:59:01,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 98 transitions.
[2018-09-30 10:59:01,346 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 98 transitions. Word has length 95
[2018-09-30 10:59:01,346 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:01,346 INFO L480 AbstractCegarLoop]: Abstraction has 98 states and 98 transitions.
[2018-09-30 10:59:01,346 INFO L481 AbstractCegarLoop]: Interpolant automaton has 96 states.
[2018-09-30 10:59:01,346 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 98 transitions.
[2018-09-30 10:59:01,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98
[2018-09-30 10:59:01,347 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:01,347 INFO L375 BasicCegarLoop]: trace histogram [48, 47, 1, 1]
[2018-09-30 10:59:01,347 INFO L423 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:01,348 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:01,348 INFO L82 PathProgramCache]: Analyzing trace with hash 2107994238, now seen corresponding path program 47 times
[2018-09-30 10:59:01,348 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:01,348 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:01,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:01,349 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:01,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:01,724 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:01,725 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:01,725 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
[2018-09-30 10:59:01,731 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:59:01,779 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 48 check-sat command(s)
[2018-09-30 10:59:01,779 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:01,781 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:02,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2256 backedges. 0 proven. 2256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:02,820 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:02,821 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48] total 96
[2018-09-30 10:59:02,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states
[2018-09-30 10:59:02,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants.
[2018-09-30 10:59:02,822 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:02,822 INFO L87 Difference]: Start difference. First operand 98 states and 98 transitions. Second operand 98 states.
[2018-09-30 10:59:03,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:03,868 INFO L93 Difference]: Finished difference Result 101 states and 101 transitions.
[2018-09-30 10:59:03,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2018-09-30 10:59:03,868 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 97
[2018-09-30 10:59:03,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:03,869 INFO L225 Difference]: With dead ends: 101
[2018-09-30 10:59:03,869 INFO L226 Difference]: Without dead ends: 100
[2018-09-30 10:59:03,869 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:03,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states.
[2018-09-30 10:59:03,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100.
[2018-09-30 10:59:03,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states.
[2018-09-30 10:59:03,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions.
[2018-09-30 10:59:03,873 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 97
[2018-09-30 10:59:03,874 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:03,874 INFO L480 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions.
[2018-09-30 10:59:03,874 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states.
[2018-09-30 10:59:03,874 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions.
[2018-09-30 10:59:03,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100
[2018-09-30 10:59:03,874 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:03,875 INFO L375 BasicCegarLoop]: trace histogram [49, 48, 1, 1]
[2018-09-30 10:59:03,875 INFO L423 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:03,875 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:03,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1442099904, now seen corresponding path program 48 times
[2018-09-30 10:59:03,875 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:03,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:03,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:03,876 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:03,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:03,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:04,273 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:04,273 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:04,273 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
[2018-09-30 10:59:04,280 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:59:04,326 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 49 check-sat command(s)
[2018-09-30 10:59:04,326 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:04,328 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:05,253 INFO L134 CoverageAnalysis]: Checked inductivity of 2352 backedges. 0 proven. 2352 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:05,273 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:05,273 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 98
[2018-09-30 10:59:05,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 100 states
[2018-09-30 10:59:05,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 100 interpolants.
[2018-09-30 10:59:05,275 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:05,275 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 100 states.
[2018-09-30 10:59:06,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:06,353 INFO L93 Difference]: Finished difference Result 103 states and 103 transitions.
[2018-09-30 10:59:06,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2018-09-30 10:59:06,354 INFO L78 Accepts]: Start accepts. Automaton has 100 states. Word has length 99
[2018-09-30 10:59:06,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:06,354 INFO L225 Difference]: With dead ends: 103
[2018-09-30 10:59:06,355 INFO L226 Difference]: Without dead ends: 102
[2018-09-30 10:59:06,355 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states.
[2018-09-30 10:59:06,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102.
[2018-09-30 10:59:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states.
[2018-09-30 10:59:06,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions.
[2018-09-30 10:59:06,358 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 99
[2018-09-30 10:59:06,359 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:06,359 INFO L480 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions.
[2018-09-30 10:59:06,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 100 states.
[2018-09-30 10:59:06,359 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions.
[2018-09-30 10:59:06,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102
[2018-09-30 10:59:06,360 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:06,360 INFO L375 BasicCegarLoop]: trace histogram [50, 49, 1, 1]
[2018-09-30 10:59:06,360 INFO L423 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:06,360 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:06,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1416429954, now seen corresponding path program 49 times
[2018-09-30 10:59:06,360 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:06,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:06,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:06,361 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:06,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:06,820 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:06,820 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:06,820 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
[2018-09-30 10:59:06,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:59:06,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:06,867 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 2450 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:08,779 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:08,779 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [50, 50] total 100
[2018-09-30 10:59:08,779 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states
[2018-09-30 10:59:08,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants.
[2018-09-30 10:59:08,780 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:08,780 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 102 states.
[2018-09-30 10:59:09,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:09,934 INFO L93 Difference]: Finished difference Result 105 states and 105 transitions.
[2018-09-30 10:59:09,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2018-09-30 10:59:09,934 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 101
[2018-09-30 10:59:09,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:09,935 INFO L225 Difference]: With dead ends: 105
[2018-09-30 10:59:09,935 INFO L226 Difference]: Without dead ends: 104
[2018-09-30 10:59:09,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:09,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states.
[2018-09-30 10:59:09,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104.
[2018-09-30 10:59:09,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states.
[2018-09-30 10:59:09,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 104 transitions.
[2018-09-30 10:59:09,940 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 104 transitions. Word has length 101
[2018-09-30 10:59:09,940 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:09,940 INFO L480 AbstractCegarLoop]: Abstraction has 104 states and 104 transitions.
[2018-09-30 10:59:09,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states.
[2018-09-30 10:59:09,941 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 104 transitions.
[2018-09-30 10:59:09,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104
[2018-09-30 10:59:09,941 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:09,941 INFO L375 BasicCegarLoop]: trace histogram [51, 50, 1, 1]
[2018-09-30 10:59:09,942 INFO L423 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:09,942 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:09,942 INFO L82 PathProgramCache]: Analyzing trace with hash -315445948, now seen corresponding path program 50 times
[2018-09-30 10:59:09,942 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:09,942 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:09,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:09,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:59:09,943 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:09,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:10,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:10,656 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:10,656 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
[2018-09-30 10:59:10,665 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:59:10,699 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:59:10,699 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:10,702 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:11,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2550 backedges. 0 proven. 2550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:11,735 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:11,736 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 102
[2018-09-30 10:59:11,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 104 states
[2018-09-30 10:59:11,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 104 interpolants.
[2018-09-30 10:59:11,738 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:11,738 INFO L87 Difference]: Start difference. First operand 104 states and 104 transitions. Second operand 104 states.
[2018-09-30 10:59:14,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:14,592 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions.
[2018-09-30 10:59:14,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2018-09-30 10:59:14,592 INFO L78 Accepts]: Start accepts. Automaton has 104 states. Word has length 103
[2018-09-30 10:59:14,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:14,593 INFO L225 Difference]: With dead ends: 107
[2018-09-30 10:59:14,593 INFO L226 Difference]: Without dead ends: 106
[2018-09-30 10:59:14,594 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:14,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states.
[2018-09-30 10:59:14,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106.
[2018-09-30 10:59:14,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states.
[2018-09-30 10:59:14,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions.
[2018-09-30 10:59:14,599 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 103
[2018-09-30 10:59:14,600 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:14,600 INFO L480 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions.
[2018-09-30 10:59:14,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 104 states.
[2018-09-30 10:59:14,600 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions.
[2018-09-30 10:59:14,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106
[2018-09-30 10:59:14,601 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:14,601 INFO L375 BasicCegarLoop]: trace histogram [52, 51, 1, 1]
[2018-09-30 10:59:14,601 INFO L423 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:14,601 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:14,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1799123078, now seen corresponding path program 51 times
[2018-09-30 10:59:14,601 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:14,602 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:14,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:14,602 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:14,604 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:14,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:15,027 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:15,027 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
[2018-09-30 10:59:15,034 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:59:15,086 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 52 check-sat command(s)
[2018-09-30 10:59:15,086 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:15,088 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:16,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2652 backedges. 0 proven. 2652 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:16,355 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:16,355 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [52, 52] total 104
[2018-09-30 10:59:16,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states
[2018-09-30 10:59:16,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants.
[2018-09-30 10:59:16,357 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:16,357 INFO L87 Difference]: Start difference. First operand 106 states and 106 transitions. Second operand 106 states.
[2018-09-30 10:59:17,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:17,685 INFO L93 Difference]: Finished difference Result 109 states and 109 transitions.
[2018-09-30 10:59:17,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2018-09-30 10:59:17,685 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 105
[2018-09-30 10:59:17,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:17,686 INFO L225 Difference]: With dead ends: 109
[2018-09-30 10:59:17,686 INFO L226 Difference]: Without dead ends: 108
[2018-09-30 10:59:17,686 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states.
[2018-09-30 10:59:17,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108.
[2018-09-30 10:59:17,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states.
[2018-09-30 10:59:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 108 transitions.
[2018-09-30 10:59:17,690 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 108 transitions. Word has length 105
[2018-09-30 10:59:17,690 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:17,690 INFO L480 AbstractCegarLoop]: Abstraction has 108 states and 108 transitions.
[2018-09-30 10:59:17,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states.
[2018-09-30 10:59:17,691 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 108 transitions.
[2018-09-30 10:59:17,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108
[2018-09-30 10:59:17,691 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:17,691 INFO L375 BasicCegarLoop]: trace histogram [53, 52, 1, 1]
[2018-09-30 10:59:17,692 INFO L423 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:17,692 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:17,692 INFO L82 PathProgramCache]: Analyzing trace with hash -1914541240, now seen corresponding path program 52 times
[2018-09-30 10:59:17,692 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:17,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:17,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:17,693 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:17,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:17,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:18,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:18,030 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:18,030 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
[2018-09-30 10:59:18,045 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:59:18,095 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:59:18,096 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:18,098 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:19,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2756 backedges. 0 proven. 2756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:19,231 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:19,232 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 106
[2018-09-30 10:59:19,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 108 states
[2018-09-30 10:59:19,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 108 interpolants.
[2018-09-30 10:59:19,233 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:19,233 INFO L87 Difference]: Start difference. First operand 108 states and 108 transitions. Second operand 108 states.
[2018-09-30 10:59:20,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:20,914 INFO L93 Difference]: Finished difference Result 111 states and 111 transitions.
[2018-09-30 10:59:20,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2018-09-30 10:59:20,915 INFO L78 Accepts]: Start accepts. Automaton has 108 states. Word has length 107
[2018-09-30 10:59:20,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:20,916 INFO L225 Difference]: With dead ends: 111
[2018-09-30 10:59:20,916 INFO L226 Difference]: Without dead ends: 110
[2018-09-30 10:59:20,916 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:20,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states.
[2018-09-30 10:59:20,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110.
[2018-09-30 10:59:20,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states.
[2018-09-30 10:59:20,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 110 transitions.
[2018-09-30 10:59:20,920 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 110 transitions. Word has length 107
[2018-09-30 10:59:20,920 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:20,920 INFO L480 AbstractCegarLoop]: Abstraction has 110 states and 110 transitions.
[2018-09-30 10:59:20,920 INFO L481 AbstractCegarLoop]: Interpolant automaton has 108 states.
[2018-09-30 10:59:20,920 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 110 transitions.
[2018-09-30 10:59:20,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110
[2018-09-30 10:59:20,921 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:20,921 INFO L375 BasicCegarLoop]: trace histogram [54, 53, 1, 1]
[2018-09-30 10:59:20,921 INFO L423 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:20,921 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:20,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1628127862, now seen corresponding path program 53 times
[2018-09-30 10:59:20,922 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:20,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:20,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:20,924 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:20,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:21,238 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:21,238 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:21,239 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
[2018-09-30 10:59:21,254 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:59:21,370 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 54 check-sat command(s)
[2018-09-30 10:59:21,370 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:21,373 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2862 backedges. 0 proven. 2862 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:22,530 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:22,531 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [54, 54] total 108
[2018-09-30 10:59:22,531 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states
[2018-09-30 10:59:22,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants.
[2018-09-30 10:59:22,532 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:22,532 INFO L87 Difference]: Start difference. First operand 110 states and 110 transitions. Second operand 110 states.
[2018-09-30 10:59:23,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:23,855 INFO L93 Difference]: Finished difference Result 113 states and 113 transitions.
[2018-09-30 10:59:23,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states.
[2018-09-30 10:59:23,855 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 109
[2018-09-30 10:59:23,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:23,856 INFO L225 Difference]: With dead ends: 113
[2018-09-30 10:59:23,856 INFO L226 Difference]: Without dead ends: 112
[2018-09-30 10:59:23,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:23,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states.
[2018-09-30 10:59:23,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112.
[2018-09-30 10:59:23,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states.
[2018-09-30 10:59:23,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 112 transitions.
[2018-09-30 10:59:23,859 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 112 transitions. Word has length 109
[2018-09-30 10:59:23,859 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:23,859 INFO L480 AbstractCegarLoop]: Abstraction has 112 states and 112 transitions.
[2018-09-30 10:59:23,859 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states.
[2018-09-30 10:59:23,859 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 112 transitions.
[2018-09-30 10:59:23,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112
[2018-09-30 10:59:23,860 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:23,860 INFO L375 BasicCegarLoop]: trace histogram [55, 54, 1, 1]
[2018-09-30 10:59:23,860 INFO L423 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:23,860 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:23,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1262778548, now seen corresponding path program 54 times
[2018-09-30 10:59:23,860 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:23,860 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:23,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:23,861 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:23,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:23,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:24,999 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:24,999 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:24,999 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 10:59:25,006 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:59:25,062 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 55 check-sat command(s)
[2018-09-30 10:59:25,063 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:25,065 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 2970 backedges. 0 proven. 2970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:26,471 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:26,471 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 110
[2018-09-30 10:59:26,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 112 states
[2018-09-30 10:59:26,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 112 interpolants.
[2018-09-30 10:59:26,474 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:26,474 INFO L87 Difference]: Start difference. First operand 112 states and 112 transitions. Second operand 112 states.
[2018-09-30 10:59:28,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:28,108 INFO L93 Difference]: Finished difference Result 115 states and 115 transitions.
[2018-09-30 10:59:28,109 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2018-09-30 10:59:28,109 INFO L78 Accepts]: Start accepts. Automaton has 112 states. Word has length 111
[2018-09-30 10:59:28,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:28,110 INFO L225 Difference]: With dead ends: 115
[2018-09-30 10:59:28,110 INFO L226 Difference]: Without dead ends: 114
[2018-09-30 10:59:28,110 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:28,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states.
[2018-09-30 10:59:28,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114.
[2018-09-30 10:59:28,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states.
[2018-09-30 10:59:28,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 114 transitions.
[2018-09-30 10:59:28,114 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 114 transitions. Word has length 111
[2018-09-30 10:59:28,114 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:28,114 INFO L480 AbstractCegarLoop]: Abstraction has 114 states and 114 transitions.
[2018-09-30 10:59:28,114 INFO L481 AbstractCegarLoop]: Interpolant automaton has 112 states.
[2018-09-30 10:59:28,114 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 114 transitions.
[2018-09-30 10:59:28,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114
[2018-09-30 10:59:28,115 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:28,115 INFO L375 BasicCegarLoop]: trace histogram [56, 55, 1, 1]
[2018-09-30 10:59:28,115 INFO L423 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:28,115 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:28,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1945561230, now seen corresponding path program 55 times
[2018-09-30 10:59:28,115 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:28,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:28,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:28,116 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:28,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:28,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:28,445 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:28,445 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 10:59:28,453 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:59:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:28,495 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:30,490 INFO L134 CoverageAnalysis]: Checked inductivity of 3080 backedges. 0 proven. 3080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:30,511 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:30,511 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [56, 56] total 112
[2018-09-30 10:59:30,511 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states
[2018-09-30 10:59:30,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants.
[2018-09-30 10:59:30,512 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:30,513 INFO L87 Difference]: Start difference. First operand 114 states and 114 transitions. Second operand 114 states.
[2018-09-30 10:59:31,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:31,949 INFO L93 Difference]: Finished difference Result 117 states and 117 transitions.
[2018-09-30 10:59:31,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2018-09-30 10:59:31,949 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 113
[2018-09-30 10:59:31,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:31,950 INFO L225 Difference]: With dead ends: 117
[2018-09-30 10:59:31,950 INFO L226 Difference]: Without dead ends: 116
[2018-09-30 10:59:31,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:31,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states.
[2018-09-30 10:59:31,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116.
[2018-09-30 10:59:31,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states.
[2018-09-30 10:59:31,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 116 transitions.
[2018-09-30 10:59:31,955 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 116 transitions. Word has length 113
[2018-09-30 10:59:31,955 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:31,955 INFO L480 AbstractCegarLoop]: Abstraction has 116 states and 116 transitions.
[2018-09-30 10:59:31,955 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states.
[2018-09-30 10:59:31,956 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 116 transitions.
[2018-09-30 10:59:31,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116
[2018-09-30 10:59:31,956 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:31,956 INFO L375 BasicCegarLoop]: trace histogram [57, 56, 1, 1]
[2018-09-30 10:59:31,957 INFO L423 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:31,957 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:31,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1373569360, now seen corresponding path program 56 times
[2018-09-30 10:59:31,957 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:31,957 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:31,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:31,958 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:59:31,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:32,554 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:32,554 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:32,554 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
[2018-09-30 10:59:32,564 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:59:32,592 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:59:32,593 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:32,595 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3192 backedges. 0 proven. 3192 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:33,889 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:33,890 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 114
[2018-09-30 10:59:33,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 116 states
[2018-09-30 10:59:33,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 116 interpolants.
[2018-09-30 10:59:33,891 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:33,891 INFO L87 Difference]: Start difference. First operand 116 states and 116 transitions. Second operand 116 states.
[2018-09-30 10:59:35,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:35,617 INFO L93 Difference]: Finished difference Result 119 states and 119 transitions.
[2018-09-30 10:59:35,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states.
[2018-09-30 10:59:35,617 INFO L78 Accepts]: Start accepts. Automaton has 116 states. Word has length 115
[2018-09-30 10:59:35,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:35,618 INFO L225 Difference]: With dead ends: 119
[2018-09-30 10:59:35,618 INFO L226 Difference]: Without dead ends: 118
[2018-09-30 10:59:35,618 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:35,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states.
[2018-09-30 10:59:35,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118.
[2018-09-30 10:59:35,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states.
[2018-09-30 10:59:35,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 118 transitions.
[2018-09-30 10:59:35,621 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 118 transitions. Word has length 115
[2018-09-30 10:59:35,622 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:35,622 INFO L480 AbstractCegarLoop]: Abstraction has 118 states and 118 transitions.
[2018-09-30 10:59:35,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 116 states.
[2018-09-30 10:59:35,622 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 118 transitions.
[2018-09-30 10:59:35,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118
[2018-09-30 10:59:35,622 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:35,622 INFO L375 BasicCegarLoop]: trace histogram [58, 57, 1, 1]
[2018-09-30 10:59:35,622 INFO L423 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:35,623 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:35,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1445196178, now seen corresponding path program 57 times
[2018-09-30 10:59:35,623 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:35,623 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:35,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:35,623 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:35,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:35,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:36,237 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:36,237 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
[2018-09-30 10:59:36,244 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:59:36,303 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 58 check-sat command(s)
[2018-09-30 10:59:36,303 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:36,306 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:37,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3306 backedges. 0 proven. 3306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:37,833 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:37,833 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [58, 58] total 116
[2018-09-30 10:59:37,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states
[2018-09-30 10:59:37,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants.
[2018-09-30 10:59:37,835 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:37,835 INFO L87 Difference]: Start difference. First operand 118 states and 118 transitions. Second operand 118 states.
[2018-09-30 10:59:39,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:39,462 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions.
[2018-09-30 10:59:39,463 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2018-09-30 10:59:39,463 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 117
[2018-09-30 10:59:39,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:39,463 INFO L225 Difference]: With dead ends: 121
[2018-09-30 10:59:39,464 INFO L226 Difference]: Without dead ends: 120
[2018-09-30 10:59:39,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:39,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states.
[2018-09-30 10:59:39,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120.
[2018-09-30 10:59:39,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states.
[2018-09-30 10:59:39,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 120 transitions.
[2018-09-30 10:59:39,468 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 120 transitions. Word has length 117
[2018-09-30 10:59:39,468 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:39,468 INFO L480 AbstractCegarLoop]: Abstraction has 120 states and 120 transitions.
[2018-09-30 10:59:39,468 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states.
[2018-09-30 10:59:39,468 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 120 transitions.
[2018-09-30 10:59:39,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120
[2018-09-30 10:59:39,469 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:39,469 INFO L375 BasicCegarLoop]: trace histogram [59, 58, 1, 1]
[2018-09-30 10:59:39,469 INFO L423 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:39,470 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:39,470 INFO L82 PathProgramCache]: Analyzing trace with hash 1559091540, now seen corresponding path program 58 times
[2018-09-30 10:59:39,470 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:39,470 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:39,470 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:39,471 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:39,471 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:39,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:39,817 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:39,817 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
[2018-09-30 10:59:39,826 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:59:39,857 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:59:39,858 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:39,860 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:41,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3422 backedges. 0 proven. 3422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:41,513 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:41,513 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 118
[2018-09-30 10:59:41,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 120 states
[2018-09-30 10:59:41,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 120 interpolants.
[2018-09-30 10:59:41,515 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:41,515 INFO L87 Difference]: Start difference. First operand 120 states and 120 transitions. Second operand 120 states.
[2018-09-30 10:59:43,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:43,159 INFO L93 Difference]: Finished difference Result 123 states and 123 transitions.
[2018-09-30 10:59:43,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states.
[2018-09-30 10:59:43,159 INFO L78 Accepts]: Start accepts. Automaton has 120 states. Word has length 119
[2018-09-30 10:59:43,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:43,160 INFO L225 Difference]: With dead ends: 123
[2018-09-30 10:59:43,160 INFO L226 Difference]: Without dead ends: 122
[2018-09-30 10:59:43,160 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:43,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states.
[2018-09-30 10:59:43,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122.
[2018-09-30 10:59:43,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states.
[2018-09-30 10:59:43,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 122 transitions.
[2018-09-30 10:59:43,163 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 122 transitions. Word has length 119
[2018-09-30 10:59:43,163 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:43,163 INFO L480 AbstractCegarLoop]: Abstraction has 122 states and 122 transitions.
[2018-09-30 10:59:43,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 120 states.
[2018-09-30 10:59:43,164 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 122 transitions.
[2018-09-30 10:59:43,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122
[2018-09-30 10:59:43,164 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:43,164 INFO L375 BasicCegarLoop]: trace histogram [60, 59, 1, 1]
[2018-09-30 10:59:43,165 INFO L423 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:43,165 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:43,165 INFO L82 PathProgramCache]: Analyzing trace with hash -656615274, now seen corresponding path program 59 times
[2018-09-30 10:59:43,165 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:43,165 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:43,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:43,166 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:43,166 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:43,680 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:43,681 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:43,681 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 10:59:43,689 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:59:43,753 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 60 check-sat command(s)
[2018-09-30 10:59:43,754 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:43,757 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:45,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3540 backedges. 0 proven. 3540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:45,349 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:45,349 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [60, 60] total 120
[2018-09-30 10:59:45,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states
[2018-09-30 10:59:45,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants.
[2018-09-30 10:59:45,351 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:45,351 INFO L87 Difference]: Start difference. First operand 122 states and 122 transitions. Second operand 122 states.
[2018-09-30 10:59:47,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:47,337 INFO L93 Difference]: Finished difference Result 125 states and 125 transitions.
[2018-09-30 10:59:47,338 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states.
[2018-09-30 10:59:47,338 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 121
[2018-09-30 10:59:47,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:47,338 INFO L225 Difference]: With dead ends: 125
[2018-09-30 10:59:47,339 INFO L226 Difference]: Without dead ends: 124
[2018-09-30 10:59:47,339 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:47,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states.
[2018-09-30 10:59:47,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124.
[2018-09-30 10:59:47,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states.
[2018-09-30 10:59:47,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 124 transitions.
[2018-09-30 10:59:47,343 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 124 transitions. Word has length 121
[2018-09-30 10:59:47,343 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:47,343 INFO L480 AbstractCegarLoop]: Abstraction has 124 states and 124 transitions.
[2018-09-30 10:59:47,343 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states.
[2018-09-30 10:59:47,343 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 124 transitions.
[2018-09-30 10:59:47,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124
[2018-09-30 10:59:47,344 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:47,344 INFO L375 BasicCegarLoop]: trace histogram [61, 60, 1, 1]
[2018-09-30 10:59:47,344 INFO L423 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:47,344 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:47,345 INFO L82 PathProgramCache]: Analyzing trace with hash 352915288, now seen corresponding path program 60 times
[2018-09-30 10:59:47,345 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:47,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:47,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:47,345 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:47,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:47,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:48,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:48,621 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:48,622 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
[2018-09-30 10:59:48,630 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:59:48,693 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 61 check-sat command(s)
[2018-09-30 10:59:48,693 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:48,696 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:50,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3660 backedges. 0 proven. 3660 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:50,260 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:50,260 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 122
[2018-09-30 10:59:50,260 INFO L459 AbstractCegarLoop]: Interpolant automaton has 124 states
[2018-09-30 10:59:50,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants.
[2018-09-30 10:59:50,262 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:50,262 INFO L87 Difference]: Start difference. First operand 124 states and 124 transitions. Second operand 124 states.
[2018-09-30 10:59:52,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:52,263 INFO L93 Difference]: Finished difference Result 127 states and 127 transitions.
[2018-09-30 10:59:52,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states.
[2018-09-30 10:59:52,263 INFO L78 Accepts]: Start accepts. Automaton has 124 states. Word has length 123
[2018-09-30 10:59:52,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:52,264 INFO L225 Difference]: With dead ends: 127
[2018-09-30 10:59:52,264 INFO L226 Difference]: Without dead ends: 126
[2018-09-30 10:59:52,264 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:52,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states.
[2018-09-30 10:59:52,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126.
[2018-09-30 10:59:52,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states.
[2018-09-30 10:59:52,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 126 transitions.
[2018-09-30 10:59:52,268 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 126 transitions. Word has length 123
[2018-09-30 10:59:52,268 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:52,268 INFO L480 AbstractCegarLoop]: Abstraction has 126 states and 126 transitions.
[2018-09-30 10:59:52,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 124 states.
[2018-09-30 10:59:52,269 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 126 transitions.
[2018-09-30 10:59:52,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126
[2018-09-30 10:59:52,269 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:52,269 INFO L375 BasicCegarLoop]: trace histogram [62, 61, 1, 1]
[2018-09-30 10:59:52,270 INFO L423 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:52,270 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:52,270 INFO L82 PathProgramCache]: Analyzing trace with hash -150823526, now seen corresponding path program 61 times
[2018-09-30 10:59:52,270 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:52,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:52,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:52,271 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:52,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:52,635 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:52,636 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 10:59:52,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:59:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:52,677 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:54,276 INFO L134 CoverageAnalysis]: Checked inductivity of 3782 backedges. 0 proven. 3782 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:54,296 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:54,296 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 62] total 124
[2018-09-30 10:59:54,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states
[2018-09-30 10:59:54,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants.
[2018-09-30 10:59:54,298 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:54,298 INFO L87 Difference]: Start difference. First operand 126 states and 126 transitions. Second operand 126 states.
[2018-09-30 10:59:56,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:56,254 INFO L93 Difference]: Finished difference Result 129 states and 129 transitions.
[2018-09-30 10:59:56,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2018-09-30 10:59:56,254 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 125
[2018-09-30 10:59:56,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:56,255 INFO L225 Difference]: With dead ends: 129
[2018-09-30 10:59:56,255 INFO L226 Difference]: Without dead ends: 128
[2018-09-30 10:59:56,255 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:56,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states.
[2018-09-30 10:59:56,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128.
[2018-09-30 10:59:56,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states.
[2018-09-30 10:59:56,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 128 transitions.
[2018-09-30 10:59:56,259 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 128 transitions. Word has length 125
[2018-09-30 10:59:56,259 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:56,259 INFO L480 AbstractCegarLoop]: Abstraction has 128 states and 128 transitions.
[2018-09-30 10:59:56,259 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states.
[2018-09-30 10:59:56,259 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 128 transitions.
[2018-09-30 10:59:56,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128
[2018-09-30 10:59:56,260 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:56,260 INFO L375 BasicCegarLoop]: trace histogram [63, 62, 1, 1]
[2018-09-30 10:59:56,260 INFO L423 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:56,260 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:56,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1087480668, now seen corresponding path program 62 times
[2018-09-30 10:59:56,260 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:56,261 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:56,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:56,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:59:56,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:56,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:56,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:56,825 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:56,825 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
[2018-09-30 10:59:56,833 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:59:56,866 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:59:56,866 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:56,868 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 3906 backedges. 0 proven. 3906 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:58,627 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:58,628 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 126
[2018-09-30 10:59:58,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 128 states
[2018-09-30 10:59:58,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 128 interpolants.
[2018-09-30 10:59:58,630 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:58,630 INFO L87 Difference]: Start difference. First operand 128 states and 128 transitions. Second operand 128 states.
[2018-09-30 11:00:00,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:00:00,667 INFO L93 Difference]: Finished difference Result 131 states and 131 transitions.
[2018-09-30 11:00:00,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states.
[2018-09-30 11:00:00,668 INFO L78 Accepts]: Start accepts. Automaton has 128 states. Word has length 127
[2018-09-30 11:00:00,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:00:00,668 INFO L225 Difference]: With dead ends: 131
[2018-09-30 11:00:00,669 INFO L226 Difference]: Without dead ends: 130
[2018-09-30 11:00:00,669 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:00:00,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states.
[2018-09-30 11:00:00,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130.
[2018-09-30 11:00:00,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states.
[2018-09-30 11:00:00,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 130 transitions.
[2018-09-30 11:00:00,672 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 130 transitions. Word has length 127
[2018-09-30 11:00:00,672 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:00:00,672 INFO L480 AbstractCegarLoop]: Abstraction has 130 states and 130 transitions.
[2018-09-30 11:00:00,672 INFO L481 AbstractCegarLoop]: Interpolant automaton has 128 states.
[2018-09-30 11:00:00,672 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 130 transitions.
[2018-09-30 11:00:00,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130
[2018-09-30 11:00:00,673 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:00:00,673 INFO L375 BasicCegarLoop]: trace histogram [64, 63, 1, 1]
[2018-09-30 11:00:00,673 INFO L423 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:00:00,674 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:00:00,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1391870110, now seen corresponding path program 63 times
[2018-09-30 11:00:00,674 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:00:00,674 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:00:00,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:00,675 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:00:00,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:00,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:01,076 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:01,077 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:00:01,077 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 11:00:01,087 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 11:00:01,164 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 64 check-sat command(s)
[2018-09-30 11:00:01,164 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:00:01,168 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:00:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4032 backedges. 0 proven. 4032 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:03,048 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:00:03,048 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [64, 64] total 128
[2018-09-30 11:00:03,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 130 states
[2018-09-30 11:00:03,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants.
[2018-09-30 11:00:03,051 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:00:03,051 INFO L87 Difference]: Start difference. First operand 130 states and 130 transitions. Second operand 130 states.
[2018-09-30 11:00:05,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:00:05,143 INFO L93 Difference]: Finished difference Result 133 states and 133 transitions.
[2018-09-30 11:00:05,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states.
[2018-09-30 11:00:05,143 INFO L78 Accepts]: Start accepts. Automaton has 130 states. Word has length 129
[2018-09-30 11:00:05,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:00:05,144 INFO L225 Difference]: With dead ends: 133
[2018-09-30 11:00:05,144 INFO L226 Difference]: Without dead ends: 132
[2018-09-30 11:00:05,144 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:00:05,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states.
[2018-09-30 11:00:05,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132.
[2018-09-30 11:00:05,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states.
[2018-09-30 11:00:05,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 132 transitions.
[2018-09-30 11:00:05,148 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 132 transitions. Word has length 129
[2018-09-30 11:00:05,148 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:00:05,148 INFO L480 AbstractCegarLoop]: Abstraction has 132 states and 132 transitions.
[2018-09-30 11:00:05,149 INFO L481 AbstractCegarLoop]: Interpolant automaton has 130 states.
[2018-09-30 11:00:05,149 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 132 transitions.
[2018-09-30 11:00:05,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132
[2018-09-30 11:00:05,149 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:00:05,150 INFO L375 BasicCegarLoop]: trace histogram [65, 64, 1, 1]
[2018-09-30 11:00:05,150 INFO L423 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:00:05,150 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:00:05,150 INFO L82 PathProgramCache]: Analyzing trace with hash 1852347744, now seen corresponding path program 64 times
[2018-09-30 11:00:05,150 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:00:05,150 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:00:05,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:05,151 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:00:05,151 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:05,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:05,536 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:05,536 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:00:05,536 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
[2018-09-30 11:00:05,546 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 11:00:05,578 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 11:00:05,578 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:00:05,581 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:00:07,392 INFO L134 CoverageAnalysis]: Checked inductivity of 4160 backedges. 0 proven. 4160 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:07,412 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:00:07,413 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 130
[2018-09-30 11:00:07,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 132 states
[2018-09-30 11:00:07,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants.
[2018-09-30 11:00:07,415 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:00:07,415 INFO L87 Difference]: Start difference. First operand 132 states and 132 transitions. Second operand 132 states.
[2018-09-30 11:00:09,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:00:09,609 INFO L93 Difference]: Finished difference Result 135 states and 135 transitions.
[2018-09-30 11:00:09,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2018-09-30 11:00:09,610 INFO L78 Accepts]: Start accepts. Automaton has 132 states. Word has length 131
[2018-09-30 11:00:09,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:00:09,610 INFO L225 Difference]: With dead ends: 135
[2018-09-30 11:00:09,610 INFO L226 Difference]: Without dead ends: 134
[2018-09-30 11:00:09,611 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:00:09,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states.
[2018-09-30 11:00:09,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134.
[2018-09-30 11:00:09,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states.
[2018-09-30 11:00:09,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 134 transitions.
[2018-09-30 11:00:09,614 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 134 transitions. Word has length 131
[2018-09-30 11:00:09,614 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:00:09,614 INFO L480 AbstractCegarLoop]: Abstraction has 134 states and 134 transitions.
[2018-09-30 11:00:09,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 132 states.
[2018-09-30 11:00:09,614 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 134 transitions.
[2018-09-30 11:00:09,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134
[2018-09-30 11:00:09,615 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:00:09,615 INFO L375 BasicCegarLoop]: trace histogram [66, 65, 1, 1]
[2018-09-30 11:00:09,615 INFO L423 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:00:09,616 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:00:09,616 INFO L82 PathProgramCache]: Analyzing trace with hash 1989722530, now seen corresponding path program 65 times
[2018-09-30 11:00:09,616 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:00:09,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:00:09,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:09,617 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:00:09,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:09,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:10,059 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:10,059 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:00:10,059 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
[2018-09-30 11:00:10,066 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 11:00:10,138 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 66 check-sat command(s)
[2018-09-30 11:00:10,139 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:00:10,142 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:00:12,781 INFO L134 CoverageAnalysis]: Checked inductivity of 4290 backedges. 0 proven. 4290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:12,801 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:00:12,801 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [66, 66] total 132
[2018-09-30 11:00:12,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 134 states
[2018-09-30 11:00:12,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants.
[2018-09-30 11:00:12,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:00:12,803 INFO L87 Difference]: Start difference. First operand 134 states and 134 transitions. Second operand 134 states.
[2018-09-30 11:00:15,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:00:15,119 INFO L93 Difference]: Finished difference Result 137 states and 137 transitions.
[2018-09-30 11:00:15,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states.
[2018-09-30 11:00:15,119 INFO L78 Accepts]: Start accepts. Automaton has 134 states. Word has length 133
[2018-09-30 11:00:15,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:00:15,120 INFO L225 Difference]: With dead ends: 137
[2018-09-30 11:00:15,120 INFO L226 Difference]: Without dead ends: 136
[2018-09-30 11:00:15,120 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:00:15,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states.
[2018-09-30 11:00:15,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 136.
[2018-09-30 11:00:15,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states.
[2018-09-30 11:00:15,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 136 transitions.
[2018-09-30 11:00:15,124 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 136 transitions. Word has length 133
[2018-09-30 11:00:15,124 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:00:15,125 INFO L480 AbstractCegarLoop]: Abstraction has 136 states and 136 transitions.
[2018-09-30 11:00:15,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 134 states.
[2018-09-30 11:00:15,125 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 136 transitions.
[2018-09-30 11:00:15,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136
[2018-09-30 11:00:15,125 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:00:15,125 INFO L375 BasicCegarLoop]: trace histogram [67, 66, 1, 1]
[2018-09-30 11:00:15,126 INFO L423 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:00:15,126 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:00:15,126 INFO L82 PathProgramCache]: Analyzing trace with hash 862905700, now seen corresponding path program 66 times
[2018-09-30 11:00:15,126 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:00:15,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:00:15,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:15,127 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:00:15,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:15,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:15,567 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:00:15,567 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
[2018-09-30 11:00:15,574 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 11:00:15,642 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 67 check-sat command(s)
[2018-09-30 11:00:15,642 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:00:15,645 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:00:17,690 INFO L134 CoverageAnalysis]: Checked inductivity of 4422 backedges. 0 proven. 4422 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:17,711 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:00:17,711 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 134
[2018-09-30 11:00:17,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 136 states
[2018-09-30 11:00:17,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 136 interpolants.
[2018-09-30 11:00:17,714 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:00:17,714 INFO L87 Difference]: Start difference. First operand 136 states and 136 transitions. Second operand 136 states.
[2018-09-30 11:00:20,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:00:20,197 INFO L93 Difference]: Finished difference Result 139 states and 139 transitions.
[2018-09-30 11:00:20,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states.
[2018-09-30 11:00:20,197 INFO L78 Accepts]: Start accepts. Automaton has 136 states. Word has length 135
[2018-09-30 11:00:20,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:00:20,197 INFO L225 Difference]: With dead ends: 139
[2018-09-30 11:00:20,198 INFO L226 Difference]: Without dead ends: 138
[2018-09-30 11:00:20,198 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:00:20,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states.
[2018-09-30 11:00:20,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138.
[2018-09-30 11:00:20,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states.
[2018-09-30 11:00:20,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 138 transitions.
[2018-09-30 11:00:20,201 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 138 transitions. Word has length 135
[2018-09-30 11:00:20,201 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:00:20,201 INFO L480 AbstractCegarLoop]: Abstraction has 138 states and 138 transitions.
[2018-09-30 11:00:20,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 136 states.
[2018-09-30 11:00:20,201 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 138 transitions.
[2018-09-30 11:00:20,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138
[2018-09-30 11:00:20,201 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:00:20,201 INFO L375 BasicCegarLoop]: trace histogram [68, 67, 1, 1]
[2018-09-30 11:00:20,202 INFO L423 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:00:20,202 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:00:20,202 INFO L82 PathProgramCache]: Analyzing trace with hash 323690662, now seen corresponding path program 67 times
[2018-09-30 11:00:20,202 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:00:20,202 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:00:20,202 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:20,202 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:00:20,203 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:20,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:20,592 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:00:20,593 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
[2018-09-30 11:00:20,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 11:00:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:20,635 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:00:22,694 INFO L134 CoverageAnalysis]: Checked inductivity of 4556 backedges. 0 proven. 4556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:22,714 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:00:22,714 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [68, 68] total 136
[2018-09-30 11:00:22,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 138 states
[2018-09-30 11:00:22,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 138 interpolants.
[2018-09-30 11:00:22,718 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:00:22,718 INFO L87 Difference]: Start difference. First operand 138 states and 138 transitions. Second operand 138 states.
[2018-09-30 11:00:25,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:00:25,155 INFO L93 Difference]: Finished difference Result 141 states and 141 transitions.
[2018-09-30 11:00:25,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states.
[2018-09-30 11:00:25,155 INFO L78 Accepts]: Start accepts. Automaton has 138 states. Word has length 137
[2018-09-30 11:00:25,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:00:25,156 INFO L225 Difference]: With dead ends: 141
[2018-09-30 11:00:25,156 INFO L226 Difference]: Without dead ends: 140
[2018-09-30 11:00:25,156 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:00:25,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states.
[2018-09-30 11:00:25,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140.
[2018-09-30 11:00:25,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states.
[2018-09-30 11:00:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 140 transitions.
[2018-09-30 11:00:25,159 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 140 transitions. Word has length 137
[2018-09-30 11:00:25,159 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:00:25,159 INFO L480 AbstractCegarLoop]: Abstraction has 140 states and 140 transitions.
[2018-09-30 11:00:25,160 INFO L481 AbstractCegarLoop]: Interpolant automaton has 138 states.
[2018-09-30 11:00:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 140 transitions.
[2018-09-30 11:00:25,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140
[2018-09-30 11:00:25,160 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:00:25,160 INFO L375 BasicCegarLoop]: trace histogram [69, 68, 1, 1]
[2018-09-30 11:00:25,160 INFO L423 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:00:25,161 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:00:25,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1829081960, now seen corresponding path program 68 times
[2018-09-30 11:00:25,161 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:00:25,161 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:00:25,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:25,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 11:00:25,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:25,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:25,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:25,587 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:00:25,587 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
[2018-09-30 11:00:25,595 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 11:00:25,630 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 11:00:25,630 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:00:25,633 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:00:27,711 INFO L134 CoverageAnalysis]: Checked inductivity of 4692 backedges. 0 proven. 4692 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:27,730 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:00:27,730 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [69, 69] total 138
[2018-09-30 11:00:27,731 INFO L459 AbstractCegarLoop]: Interpolant automaton has 140 states
[2018-09-30 11:00:27,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 140 interpolants.
[2018-09-30 11:00:27,733 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:00:27,733 INFO L87 Difference]: Start difference. First operand 140 states and 140 transitions. Second operand 140 states.
[2018-09-30 11:00:30,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:00:30,205 INFO L93 Difference]: Finished difference Result 143 states and 143 transitions.
[2018-09-30 11:00:30,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states.
[2018-09-30 11:00:30,205 INFO L78 Accepts]: Start accepts. Automaton has 140 states. Word has length 139
[2018-09-30 11:00:30,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:00:30,206 INFO L225 Difference]: With dead ends: 143
[2018-09-30 11:00:30,206 INFO L226 Difference]: Without dead ends: 142
[2018-09-30 11:00:30,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:00:30,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states.
[2018-09-30 11:00:30,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 142.
[2018-09-30 11:00:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states.
[2018-09-30 11:00:30,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 142 transitions.
[2018-09-30 11:00:30,209 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 142 transitions. Word has length 139
[2018-09-30 11:00:30,209 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:00:30,209 INFO L480 AbstractCegarLoop]: Abstraction has 142 states and 142 transitions.
[2018-09-30 11:00:30,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 140 states.
[2018-09-30 11:00:30,209 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 142 transitions.
[2018-09-30 11:00:30,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142
[2018-09-30 11:00:30,210 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:00:30,210 INFO L375 BasicCegarLoop]: trace histogram [70, 69, 1, 1]
[2018-09-30 11:00:30,210 INFO L423 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:00:30,211 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:00:30,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1106140586, now seen corresponding path program 69 times
[2018-09-30 11:00:30,211 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:00:30,211 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:00:30,211 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:30,211 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:00:30,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:30,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:30,635 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:00:30,635 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 11:00:30,642 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 11:00:30,719 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 70 check-sat command(s)
[2018-09-30 11:00:30,720 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:00:30,722 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:00:32,862 INFO L134 CoverageAnalysis]: Checked inductivity of 4830 backedges. 0 proven. 4830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:32,883 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:00:32,883 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [70, 70] total 140
[2018-09-30 11:00:32,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 142 states
[2018-09-30 11:00:32,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 142 interpolants.
[2018-09-30 11:00:32,885 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:00:32,885 INFO L87 Difference]: Start difference. First operand 142 states and 142 transitions. Second operand 142 states.
[2018-09-30 11:00:35,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:00:35,600 INFO L93 Difference]: Finished difference Result 145 states and 145 transitions.
[2018-09-30 11:00:35,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states.
[2018-09-30 11:00:35,600 INFO L78 Accepts]: Start accepts. Automaton has 142 states. Word has length 141
[2018-09-30 11:00:35,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:00:35,601 INFO L225 Difference]: With dead ends: 145
[2018-09-30 11:00:35,601 INFO L226 Difference]: Without dead ends: 144
[2018-09-30 11:00:35,601 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:00:35,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states.
[2018-09-30 11:00:35,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144.
[2018-09-30 11:00:35,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 144 states.
[2018-09-30 11:00:35,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 144 transitions.
[2018-09-30 11:00:35,605 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 144 transitions. Word has length 141
[2018-09-30 11:00:35,605 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:00:35,605 INFO L480 AbstractCegarLoop]: Abstraction has 144 states and 144 transitions.
[2018-09-30 11:00:35,605 INFO L481 AbstractCegarLoop]: Interpolant automaton has 142 states.
[2018-09-30 11:00:35,606 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 144 transitions.
[2018-09-30 11:00:35,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144
[2018-09-30 11:00:35,606 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:00:35,606 INFO L375 BasicCegarLoop]: trace histogram [71, 70, 1, 1]
[2018-09-30 11:00:35,606 INFO L423 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:00:35,607 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:00:35,607 INFO L82 PathProgramCache]: Analyzing trace with hash 2144182124, now seen corresponding path program 70 times
[2018-09-30 11:00:35,607 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:00:35,607 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:00:35,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:35,608 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:00:35,608 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:35,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:36,093 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:36,093 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:00:36,093 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
[2018-09-30 11:00:36,101 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 11:00:36,139 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 11:00:36,139 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:00:36,142 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:00:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4970 backedges. 0 proven. 4970 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:38,464 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:00:38,464 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [71, 71] total 142
[2018-09-30 11:00:38,465 INFO L459 AbstractCegarLoop]: Interpolant automaton has 144 states
[2018-09-30 11:00:38,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 144 interpolants.
[2018-09-30 11:00:38,467 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:00:38,467 INFO L87 Difference]: Start difference. First operand 144 states and 144 transitions. Second operand 144 states.
[2018-09-30 11:00:41,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:00:41,056 INFO L93 Difference]: Finished difference Result 147 states and 147 transitions.
[2018-09-30 11:00:41,056 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states.
[2018-09-30 11:00:41,056 INFO L78 Accepts]: Start accepts. Automaton has 144 states. Word has length 143
[2018-09-30 11:00:41,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:00:41,057 INFO L225 Difference]: With dead ends: 147
[2018-09-30 11:00:41,057 INFO L226 Difference]: Without dead ends: 146
[2018-09-30 11:00:41,057 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 142 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:00:41,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states.
[2018-09-30 11:00:41,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146.
[2018-09-30 11:00:41,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states.
[2018-09-30 11:00:41,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 146 transitions.
[2018-09-30 11:00:41,062 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 146 transitions. Word has length 143
[2018-09-30 11:00:41,062 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:00:41,062 INFO L480 AbstractCegarLoop]: Abstraction has 146 states and 146 transitions.
[2018-09-30 11:00:41,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 144 states.
[2018-09-30 11:00:41,062 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 146 transitions.
[2018-09-30 11:00:41,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146
[2018-09-30 11:00:41,063 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:00:41,063 INFO L375 BasicCegarLoop]: trace histogram [72, 71, 1, 1]
[2018-09-30 11:00:41,063 INFO L423 AbstractCegarLoop]: === Iteration 72 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:00:41,063 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:00:41,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1025279826, now seen corresponding path program 71 times
[2018-09-30 11:00:41,063 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:00:41,063 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:00:41,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:41,064 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:00:41,064 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:41,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:41,559 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:41,560 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:00:41,560 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 11:00:41,567 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 11:00:41,746 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s)
[2018-09-30 11:00:41,747 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:00:41,752 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:00:44,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5112 backedges. 0 proven. 5112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:44,502 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:00:44,502 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [72, 72] total 144
[2018-09-30 11:00:44,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 146 states
[2018-09-30 11:00:44,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 146 interpolants.
[2018-09-30 11:00:44,505 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:00:44,505 INFO L87 Difference]: Start difference. First operand 146 states and 146 transitions. Second operand 146 states.
[2018-09-30 11:00:47,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:00:47,313 INFO L93 Difference]: Finished difference Result 149 states and 149 transitions.
[2018-09-30 11:00:47,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states.
[2018-09-30 11:00:47,313 INFO L78 Accepts]: Start accepts. Automaton has 146 states. Word has length 145
[2018-09-30 11:00:47,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:00:47,314 INFO L225 Difference]: With dead ends: 149
[2018-09-30 11:00:47,314 INFO L226 Difference]: Without dead ends: 148
[2018-09-30 11:00:47,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:00:47,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states.
[2018-09-30 11:00:47,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148.
[2018-09-30 11:00:47,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states.
[2018-09-30 11:00:47,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 148 transitions.
[2018-09-30 11:00:47,319 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 148 transitions. Word has length 145
[2018-09-30 11:00:47,319 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:00:47,319 INFO L480 AbstractCegarLoop]: Abstraction has 148 states and 148 transitions.
[2018-09-30 11:00:47,319 INFO L481 AbstractCegarLoop]: Interpolant automaton has 146 states.
[2018-09-30 11:00:47,319 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 148 transitions.
[2018-09-30 11:00:47,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148
[2018-09-30 11:00:47,320 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:00:47,320 INFO L375 BasicCegarLoop]: trace histogram [73, 72, 1, 1]
[2018-09-30 11:00:47,321 INFO L423 AbstractCegarLoop]: === Iteration 73 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:00:47,321 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:00:47,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1746400912, now seen corresponding path program 72 times
[2018-09-30 11:00:47,321 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:00:47,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:00:47,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:47,322 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:00:47,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:47,991 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:00:47,991 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
[2018-09-30 11:00:47,999 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 11:00:48,091 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 73 check-sat command(s)
[2018-09-30 11:00:48,091 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:00:48,094 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:00:50,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5256 backedges. 0 proven. 5256 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:50,784 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:00:50,784 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [73, 73] total 146
[2018-09-30 11:00:50,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 148 states
[2018-09-30 11:00:50,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 148 interpolants.
[2018-09-30 11:00:50,787 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:00:50,787 INFO L87 Difference]: Start difference. First operand 148 states and 148 transitions. Second operand 148 states.
[2018-09-30 11:00:53,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:00:53,518 INFO L93 Difference]: Finished difference Result 151 states and 151 transitions.
[2018-09-30 11:00:53,518 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states.
[2018-09-30 11:00:53,518 INFO L78 Accepts]: Start accepts. Automaton has 148 states. Word has length 147
[2018-09-30 11:00:53,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:00:53,519 INFO L225 Difference]: With dead ends: 151
[2018-09-30 11:00:53,519 INFO L226 Difference]: Without dead ends: 150
[2018-09-30 11:00:53,519 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:00:53,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states.
[2018-09-30 11:00:53,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 150.
[2018-09-30 11:00:53,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states.
[2018-09-30 11:00:53,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 150 transitions.
[2018-09-30 11:00:53,524 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 150 transitions. Word has length 147
[2018-09-30 11:00:53,524 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:00:53,525 INFO L480 AbstractCegarLoop]: Abstraction has 150 states and 150 transitions.
[2018-09-30 11:00:53,525 INFO L481 AbstractCegarLoop]: Interpolant automaton has 148 states.
[2018-09-30 11:00:53,525 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 150 transitions.
[2018-09-30 11:00:53,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150
[2018-09-30 11:00:53,525 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:00:53,526 INFO L375 BasicCegarLoop]: trace histogram [74, 73, 1, 1]
[2018-09-30 11:00:53,526 INFO L423 AbstractCegarLoop]: === Iteration 74 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:00:53,526 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:00:53,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1040937394, now seen corresponding path program 73 times
[2018-09-30 11:00:53,526 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:00:53,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:00:53,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:53,527 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:00:53,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:53,995 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:00:53,995 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
[2018-09-30 11:00:54,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 11:00:54,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:54,040 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:00:56,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5402 backedges. 0 proven. 5402 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:56,571 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:00:56,572 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [74, 74] total 148
[2018-09-30 11:00:56,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 150 states
[2018-09-30 11:00:56,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 150 interpolants.
[2018-09-30 11:00:56,574 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:00:56,574 INFO L87 Difference]: Start difference. First operand 150 states and 150 transitions. Second operand 150 states.
[2018-09-30 11:00:59,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:00:59,727 INFO L93 Difference]: Finished difference Result 153 states and 153 transitions.
[2018-09-30 11:00:59,728 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states.
[2018-09-30 11:00:59,728 INFO L78 Accepts]: Start accepts. Automaton has 150 states. Word has length 149
[2018-09-30 11:00:59,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:00:59,729 INFO L225 Difference]: With dead ends: 153
[2018-09-30 11:00:59,729 INFO L226 Difference]: Without dead ends: 152
[2018-09-30 11:00:59,729 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 148 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:00:59,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states.
[2018-09-30 11:00:59,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152.
[2018-09-30 11:00:59,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states.
[2018-09-30 11:00:59,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 152 transitions.
[2018-09-30 11:00:59,733 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 152 transitions. Word has length 149
[2018-09-30 11:00:59,733 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:00:59,733 INFO L480 AbstractCegarLoop]: Abstraction has 152 states and 152 transitions.
[2018-09-30 11:00:59,733 INFO L481 AbstractCegarLoop]: Interpolant automaton has 150 states.
[2018-09-30 11:00:59,733 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 152 transitions.
[2018-09-30 11:00:59,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152
[2018-09-30 11:00:59,734 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:00:59,734 INFO L375 BasicCegarLoop]: trace histogram [75, 74, 1, 1]
[2018-09-30 11:00:59,735 INFO L423 AbstractCegarLoop]: === Iteration 75 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:00:59,735 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:00:59,735 INFO L82 PathProgramCache]: Analyzing trace with hash -386543244, now seen corresponding path program 74 times
[2018-09-30 11:00:59,735 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:00:59,735 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:00:59,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:59,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 11:00:59,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:59,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:01:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:00,225 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:01:00,225 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
[2018-09-30 11:01:00,232 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 11:01:00,269 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 11:01:00,270 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:01:00,273 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:01:02,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5550 backedges. 0 proven. 5550 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:02,904 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:01:02,905 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [75, 75] total 150
[2018-09-30 11:01:02,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 152 states
[2018-09-30 11:01:02,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 152 interpolants.
[2018-09-30 11:01:02,907 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:01:02,907 INFO L87 Difference]: Start difference. First operand 152 states and 152 transitions. Second operand 152 states.
[2018-09-30 11:01:05,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:01:05,892 INFO L93 Difference]: Finished difference Result 155 states and 155 transitions.
[2018-09-30 11:01:05,892 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states.
[2018-09-30 11:01:05,892 INFO L78 Accepts]: Start accepts. Automaton has 152 states. Word has length 151
[2018-09-30 11:01:05,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:01:05,893 INFO L225 Difference]: With dead ends: 155
[2018-09-30 11:01:05,893 INFO L226 Difference]: Without dead ends: 154
[2018-09-30 11:01:05,893 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:01:05,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states.
[2018-09-30 11:01:05,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154.
[2018-09-30 11:01:05,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states.
[2018-09-30 11:01:05,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 154 transitions.
[2018-09-30 11:01:05,897 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 154 transitions. Word has length 151
[2018-09-30 11:01:05,897 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:01:05,897 INFO L480 AbstractCegarLoop]: Abstraction has 154 states and 154 transitions.
[2018-09-30 11:01:05,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 152 states.
[2018-09-30 11:01:05,897 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 154 transitions.
[2018-09-30 11:01:05,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154
[2018-09-30 11:01:05,898 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:01:05,898 INFO L375 BasicCegarLoop]: trace histogram [76, 75, 1, 1]
[2018-09-30 11:01:05,898 INFO L423 AbstractCegarLoop]: === Iteration 76 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:01:05,898 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:01:05,898 INFO L82 PathProgramCache]: Analyzing trace with hash -2100868938, now seen corresponding path program 75 times
[2018-09-30 11:01:05,898 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:01:05,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:01:05,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:05,899 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:01:05,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:01:06,376 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:06,376 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:01:06,376 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
[2018-09-30 11:01:06,384 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 11:01:06,471 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 76 check-sat command(s)
[2018-09-30 11:01:06,471 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:01:06,474 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:01:09,156 INFO L134 CoverageAnalysis]: Checked inductivity of 5700 backedges. 0 proven. 5700 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:09,176 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:01:09,176 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [76, 76] total 152
[2018-09-30 11:01:09,177 INFO L459 AbstractCegarLoop]: Interpolant automaton has 154 states
[2018-09-30 11:01:09,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 154 interpolants.
[2018-09-30 11:01:09,179 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:01:09,179 INFO L87 Difference]: Start difference. First operand 154 states and 154 transitions. Second operand 154 states.
[2018-09-30 11:01:12,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:01:12,204 INFO L93 Difference]: Finished difference Result 157 states and 157 transitions.
[2018-09-30 11:01:12,204 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states.
[2018-09-30 11:01:12,204 INFO L78 Accepts]: Start accepts. Automaton has 154 states. Word has length 153
[2018-09-30 11:01:12,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:01:12,205 INFO L225 Difference]: With dead ends: 157
[2018-09-30 11:01:12,205 INFO L226 Difference]: Without dead ends: 156
[2018-09-30 11:01:12,205 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:01:12,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states.
[2018-09-30 11:01:12,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156.
[2018-09-30 11:01:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states.
[2018-09-30 11:01:12,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 156 transitions.
[2018-09-30 11:01:12,208 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 156 transitions. Word has length 153
[2018-09-30 11:01:12,208 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:01:12,208 INFO L480 AbstractCegarLoop]: Abstraction has 156 states and 156 transitions.
[2018-09-30 11:01:12,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 154 states.
[2018-09-30 11:01:12,209 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 156 transitions.
[2018-09-30 11:01:12,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156
[2018-09-30 11:01:12,209 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:01:12,209 INFO L375 BasicCegarLoop]: trace histogram [77, 76, 1, 1]
[2018-09-30 11:01:12,209 INFO L423 AbstractCegarLoop]: === Iteration 77 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:01:12,209 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:01:12,210 INFO L82 PathProgramCache]: Analyzing trace with hash -300419208, now seen corresponding path program 76 times
[2018-09-30 11:01:12,210 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:01:12,210 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:01:12,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:12,210 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:01:12,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:01:12,680 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:12,681 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:01:12,681 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 11:01:12,687 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 11:01:12,728 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 11:01:12,728 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:01:12,731 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:01:15,611 INFO L134 CoverageAnalysis]: Checked inductivity of 5852 backedges. 0 proven. 5852 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:15,631 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:01:15,631 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [77, 77] total 154
[2018-09-30 11:01:15,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 156 states
[2018-09-30 11:01:15,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 156 interpolants.
[2018-09-30 11:01:15,634 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:01:15,634 INFO L87 Difference]: Start difference. First operand 156 states and 156 transitions. Second operand 156 states.
[2018-09-30 11:01:18,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:01:18,819 INFO L93 Difference]: Finished difference Result 159 states and 159 transitions.
[2018-09-30 11:01:18,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states.
[2018-09-30 11:01:18,819 INFO L78 Accepts]: Start accepts. Automaton has 156 states. Word has length 155
[2018-09-30 11:01:18,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:01:18,820 INFO L225 Difference]: With dead ends: 159
[2018-09-30 11:01:18,820 INFO L226 Difference]: Without dead ends: 158
[2018-09-30 11:01:18,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:01:18,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states.
[2018-09-30 11:01:18,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158.
[2018-09-30 11:01:18,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states.
[2018-09-30 11:01:18,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 158 transitions.
[2018-09-30 11:01:18,824 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 158 transitions. Word has length 155
[2018-09-30 11:01:18,824 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:01:18,824 INFO L480 AbstractCegarLoop]: Abstraction has 158 states and 158 transitions.
[2018-09-30 11:01:18,824 INFO L481 AbstractCegarLoop]: Interpolant automaton has 156 states.
[2018-09-30 11:01:18,824 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 158 transitions.
[2018-09-30 11:01:18,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158
[2018-09-30 11:01:18,824 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:01:18,825 INFO L375 BasicCegarLoop]: trace histogram [78, 77, 1, 1]
[2018-09-30 11:01:18,825 INFO L423 AbstractCegarLoop]: === Iteration 78 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:01:18,825 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:01:18,825 INFO L82 PathProgramCache]: Analyzing trace with hash -940048966, now seen corresponding path program 77 times
[2018-09-30 11:01:18,825 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:01:18,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:01:18,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:18,826 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:01:18,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:01:19,355 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:19,356 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:01:19,356 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
[2018-09-30 11:01:19,363 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 11:01:19,461 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 78 check-sat command(s)
[2018-09-30 11:01:19,461 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:01:19,465 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:01:22,412 INFO L134 CoverageAnalysis]: Checked inductivity of 6006 backedges. 0 proven. 6006 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:22,432 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:01:22,433 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [78, 78] total 156
[2018-09-30 11:01:22,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 158 states
[2018-09-30 11:01:22,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 158 interpolants.
[2018-09-30 11:01:22,435 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:01:22,436 INFO L87 Difference]: Start difference. First operand 158 states and 158 transitions. Second operand 158 states.
[2018-09-30 11:01:26,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:01:26,188 INFO L93 Difference]: Finished difference Result 161 states and 161 transitions.
[2018-09-30 11:01:26,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states.
[2018-09-30 11:01:26,189 INFO L78 Accepts]: Start accepts. Automaton has 158 states. Word has length 157
[2018-09-30 11:01:26,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:01:26,189 INFO L225 Difference]: With dead ends: 161
[2018-09-30 11:01:26,189 INFO L226 Difference]: Without dead ends: 160
[2018-09-30 11:01:26,190 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:01:26,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states.
[2018-09-30 11:01:26,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160.
[2018-09-30 11:01:26,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states.
[2018-09-30 11:01:26,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 160 transitions.
[2018-09-30 11:01:26,195 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 160 transitions. Word has length 157
[2018-09-30 11:01:26,195 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:01:26,195 INFO L480 AbstractCegarLoop]: Abstraction has 160 states and 160 transitions.
[2018-09-30 11:01:26,195 INFO L481 AbstractCegarLoop]: Interpolant automaton has 158 states.
[2018-09-30 11:01:26,195 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 160 transitions.
[2018-09-30 11:01:26,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160
[2018-09-30 11:01:26,196 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:01:26,196 INFO L375 BasicCegarLoop]: trace histogram [79, 78, 1, 1]
[2018-09-30 11:01:26,196 INFO L423 AbstractCegarLoop]: === Iteration 79 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:01:26,197 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:01:26,197 INFO L82 PathProgramCache]: Analyzing trace with hash -1443923076, now seen corresponding path program 78 times
[2018-09-30 11:01:26,197 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:01:26,197 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:01:26,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:26,198 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:01:26,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:26,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:01:26,729 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:26,729 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:01:26,729 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 11:01:26,736 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 11:01:26,865 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 79 check-sat command(s)
[2018-09-30 11:01:26,866 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:01:26,869 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:01:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 6162 backedges. 0 proven. 6162 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:29,961 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:01:29,961 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [79, 79] total 158
[2018-09-30 11:01:29,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 160 states
[2018-09-30 11:01:29,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 160 interpolants.
[2018-09-30 11:01:29,964 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:01:29,964 INFO L87 Difference]: Start difference. First operand 160 states and 160 transitions. Second operand 160 states.
[2018-09-30 11:01:33,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:01:33,949 INFO L93 Difference]: Finished difference Result 163 states and 163 transitions.
[2018-09-30 11:01:33,949 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states.
[2018-09-30 11:01:33,950 INFO L78 Accepts]: Start accepts. Automaton has 160 states. Word has length 159
[2018-09-30 11:01:33,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:01:33,950 INFO L225 Difference]: With dead ends: 163
[2018-09-30 11:01:33,950 INFO L226 Difference]: Without dead ends: 162
[2018-09-30 11:01:33,951 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:01:33,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states.
[2018-09-30 11:01:33,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162.
[2018-09-30 11:01:33,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states.
[2018-09-30 11:01:33,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 162 transitions.
[2018-09-30 11:01:33,956 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 162 transitions. Word has length 159
[2018-09-30 11:01:33,956 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:01:33,956 INFO L480 AbstractCegarLoop]: Abstraction has 162 states and 162 transitions.
[2018-09-30 11:01:33,956 INFO L481 AbstractCegarLoop]: Interpolant automaton has 160 states.
[2018-09-30 11:01:33,956 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 162 transitions.
[2018-09-30 11:01:33,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162
[2018-09-30 11:01:33,957 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:01:33,957 INFO L375 BasicCegarLoop]: trace histogram [80, 79, 1, 1]
[2018-09-30 11:01:33,957 INFO L423 AbstractCegarLoop]: === Iteration 80 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:01:33,957 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:01:33,958 INFO L82 PathProgramCache]: Analyzing trace with hash -335638338, now seen corresponding path program 79 times
[2018-09-30 11:01:33,958 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:01:33,958 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:01:33,958 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:33,959 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:01:33,959 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:01:34,636 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:34,636 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:01:34,636 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 11:01:34,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 11:01:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:01:34,691 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:01:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 6320 backedges. 0 proven. 6320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:37,869 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:01:37,870 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [80, 80] total 160
[2018-09-30 11:01:37,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 162 states
[2018-09-30 11:01:37,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 162 interpolants.
[2018-09-30 11:01:37,873 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:01:37,873 INFO L87 Difference]: Start difference. First operand 162 states and 162 transitions. Second operand 162 states.
[2018-09-30 11:01:41,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:01:41,781 INFO L93 Difference]: Finished difference Result 165 states and 165 transitions.
[2018-09-30 11:01:41,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states.
[2018-09-30 11:01:41,782 INFO L78 Accepts]: Start accepts. Automaton has 162 states. Word has length 161
[2018-09-30 11:01:41,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:01:41,782 INFO L225 Difference]: With dead ends: 165
[2018-09-30 11:01:41,782 INFO L226 Difference]: Without dead ends: 164
[2018-09-30 11:01:41,783 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 160 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:01:41,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states.
[2018-09-30 11:01:41,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164.
[2018-09-30 11:01:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states.
[2018-09-30 11:01:41,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 164 transitions.
[2018-09-30 11:01:41,788 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 164 transitions. Word has length 161
[2018-09-30 11:01:41,788 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:01:41,788 INFO L480 AbstractCegarLoop]: Abstraction has 164 states and 164 transitions.
[2018-09-30 11:01:41,788 INFO L481 AbstractCegarLoop]: Interpolant automaton has 162 states.
[2018-09-30 11:01:41,788 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 164 transitions.
[2018-09-30 11:01:41,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164
[2018-09-30 11:01:41,789 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:01:41,789 INFO L375 BasicCegarLoop]: trace histogram [81, 80, 1, 1]
[2018-09-30 11:01:41,789 INFO L423 AbstractCegarLoop]: === Iteration 81 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:01:41,790 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:01:41,790 INFO L82 PathProgramCache]: Analyzing trace with hash -425894528, now seen corresponding path program 80 times
[2018-09-30 11:01:41,790 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:01:41,790 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:01:41,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:41,791 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 11:01:41,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:01:42,402 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:42,402 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:01:42,402 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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
[2018-09-30 11:01:42,409 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 11:01:42,454 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 11:01:42,454 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:01:42,457 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:01:45,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6480 backedges. 0 proven. 6480 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:45,749 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:01:45,750 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [81, 81] total 162
[2018-09-30 11:01:45,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 164 states
[2018-09-30 11:01:45,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 164 interpolants.
[2018-09-30 11:01:45,753 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:01:45,753 INFO L87 Difference]: Start difference. First operand 164 states and 164 transitions. Second operand 164 states.
[2018-09-30 11:01:49,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:01:49,767 INFO L93 Difference]: Finished difference Result 167 states and 167 transitions.
[2018-09-30 11:01:49,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states.
[2018-09-30 11:01:49,767 INFO L78 Accepts]: Start accepts. Automaton has 164 states. Word has length 163
[2018-09-30 11:01:49,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:01:49,768 INFO L225 Difference]: With dead ends: 167
[2018-09-30 11:01:49,768 INFO L226 Difference]: Without dead ends: 166
[2018-09-30 11:01:49,768 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:01:49,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states.
[2018-09-30 11:01:49,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166.
[2018-09-30 11:01:49,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states.
[2018-09-30 11:01:49,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 166 transitions.
[2018-09-30 11:01:49,771 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 166 transitions. Word has length 163
[2018-09-30 11:01:49,772 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:01:49,772 INFO L480 AbstractCegarLoop]: Abstraction has 166 states and 166 transitions.
[2018-09-30 11:01:49,772 INFO L481 AbstractCegarLoop]: Interpolant automaton has 164 states.
[2018-09-30 11:01:49,772 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 166 transitions.
[2018-09-30 11:01:49,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166
[2018-09-30 11:01:49,772 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:01:49,772 INFO L375 BasicCegarLoop]: trace histogram [82, 81, 1, 1]
[2018-09-30 11:01:49,773 INFO L423 AbstractCegarLoop]: === Iteration 82 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:01:49,773 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:01:49,773 INFO L82 PathProgramCache]: Analyzing trace with hash -1262747198, now seen corresponding path program 81 times
[2018-09-30 11:01:49,773 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:01:49,773 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:01:49,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:49,774 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:01:49,774 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:01:50,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:50,340 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:01:50,340 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
[2018-09-30 11:01:50,349 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 11:01:50,445 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 82 check-sat command(s)
[2018-09-30 11:01:50,445 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:01:50,448 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:01:53,750 INFO L134 CoverageAnalysis]: Checked inductivity of 6642 backedges. 0 proven. 6642 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:53,770 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:01:53,770 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [82, 82] total 164
[2018-09-30 11:01:53,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 166 states
[2018-09-30 11:01:53,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 166 interpolants.
[2018-09-30 11:01:53,773 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:01:53,773 INFO L87 Difference]: Start difference. First operand 166 states and 166 transitions. Second operand 166 states.
[2018-09-30 11:01:57,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:01:57,580 INFO L93 Difference]: Finished difference Result 169 states and 169 transitions.
[2018-09-30 11:01:57,581 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states.
[2018-09-30 11:01:57,581 INFO L78 Accepts]: Start accepts. Automaton has 166 states. Word has length 165
[2018-09-30 11:01:57,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:01:57,581 INFO L225 Difference]: With dead ends: 169
[2018-09-30 11:01:57,582 INFO L226 Difference]: Without dead ends: 168
[2018-09-30 11:01:57,582 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:01:57,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states.
[2018-09-30 11:01:57,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168.
[2018-09-30 11:01:57,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states.
[2018-09-30 11:01:57,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 168 transitions.
[2018-09-30 11:01:57,585 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 168 transitions. Word has length 165
[2018-09-30 11:01:57,585 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:01:57,585 INFO L480 AbstractCegarLoop]: Abstraction has 168 states and 168 transitions.
[2018-09-30 11:01:57,585 INFO L481 AbstractCegarLoop]: Interpolant automaton has 166 states.
[2018-09-30 11:01:57,585 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 168 transitions.
[2018-09-30 11:01:57,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168
[2018-09-30 11:01:57,586 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:01:57,586 INFO L375 BasicCegarLoop]: trace histogram [83, 82, 1, 1]
[2018-09-30 11:01:57,586 INFO L423 AbstractCegarLoop]: === Iteration 83 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:01:57,586 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:01:57,586 INFO L82 PathProgramCache]: Analyzing trace with hash 1975688580, now seen corresponding path program 82 times
[2018-09-30 11:01:57,586 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:01:57,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:01:57,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:57,587 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:01:57,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:01:57,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:01:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:01:58,120 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:01:58,120 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
[2018-09-30 11:01:58,127 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 11:01:58,173 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 11:01:58,173 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:01:58,176 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:02:01,568 INFO L134 CoverageAnalysis]: Checked inductivity of 6806 backedges. 0 proven. 6806 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:02:01,588 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:02:01,589 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [83, 83] total 166
[2018-09-30 11:02:01,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 168 states
[2018-09-30 11:02:01,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 168 interpolants.
[2018-09-30 11:02:01,592 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:02:01,592 INFO L87 Difference]: Start difference. First operand 168 states and 168 transitions. Second operand 168 states.
[2018-09-30 11:02:05,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:02:05,235 INFO L93 Difference]: Finished difference Result 171 states and 171 transitions.
[2018-09-30 11:02:05,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states.
[2018-09-30 11:02:05,235 INFO L78 Accepts]: Start accepts. Automaton has 168 states. Word has length 167
[2018-09-30 11:02:05,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:02:05,236 INFO L225 Difference]: With dead ends: 171
[2018-09-30 11:02:05,236 INFO L226 Difference]: Without dead ends: 170
[2018-09-30 11:02:05,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 166 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:02:05,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states.
[2018-09-30 11:02:05,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170.
[2018-09-30 11:02:05,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states.
[2018-09-30 11:02:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 170 transitions.
[2018-09-30 11:02:05,239 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 170 transitions. Word has length 167
[2018-09-30 11:02:05,240 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:02:05,240 INFO L480 AbstractCegarLoop]: Abstraction has 170 states and 170 transitions.
[2018-09-30 11:02:05,240 INFO L481 AbstractCegarLoop]: Interpolant automaton has 168 states.
[2018-09-30 11:02:05,240 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 170 transitions.
[2018-09-30 11:02:05,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170
[2018-09-30 11:02:05,240 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:02:05,240 INFO L375 BasicCegarLoop]: trace histogram [84, 83, 1, 1]
[2018-09-30 11:02:05,241 INFO L423 AbstractCegarLoop]: === Iteration 84 === [mainErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:02:05,241 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:02:05,241 INFO L82 PathProgramCache]: Analyzing trace with hash 261181638, now seen corresponding path program 83 times
[2018-09-30 11:02:05,241 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:02:05,241 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:02:05,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:02:05,241 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:02:05,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:02:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:02:05,784 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:02:05,785 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:02:05,785 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
[2018-09-30 11:02:05,793 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 11:02:05,896 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 84 check-sat command(s)
[2018-09-30 11:02:05,896 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:02:05,901 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:02:09,387 INFO L134 CoverageAnalysis]: Checked inductivity of 6972 backedges. 0 proven. 6972 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:02:09,409 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:02:09,409 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [84, 84] total 168
[2018-09-30 11:02:09,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 170 states
[2018-09-30 11:02:09,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 170 interpolants.
[2018-09-30 11:02:09,412 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:02:09,412 INFO L87 Difference]: Start difference. First operand 170 states and 170 transitions. Second operand 170 states.
Received shutdown request...
[2018-09-30 11:02:09,668 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2018-09-30 11:02:09,668 WARN L549 AbstractCegarLoop]: Verification canceled
[2018-09-30 11:02:09,673 WARN L206 ceAbstractionStarter]: Timeout
[2018-09-30 11:02:09,673 INFO L202 PluginConnector]: Adding new model LexIndexValue-Pointer-Reduced.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 11:02:09 BoogieIcfgContainer
[2018-09-30 11:02:09,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-09-30 11:02:09,674 INFO L168 Benchmark]: Toolchain (without parser) took 251668.73 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -34.6 MB). Free memory was 1.5 GB in the beginning and 951.3 MB in the end (delta: 517.5 MB). Peak memory consumption was 482.9 MB. Max. memory is 7.1 GB.
[2018-09-30 11:02:09,676 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-09-30 11:02:09,676 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.69 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-09-30 11:02:09,677 INFO L168 Benchmark]: Boogie Preprocessor took 25.13 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB.
[2018-09-30 11:02:09,677 INFO L168 Benchmark]: RCFGBuilder took 296.61 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.
[2018-09-30 11:02:09,678 INFO L168 Benchmark]: TraceAbstraction took 251298.34 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -34.6 MB). Free memory was 1.4 GB in the beginning and 951.3 MB in the end (delta: 496.4 MB). Peak memory consumption was 461.8 MB. Max. memory is 7.1 GB.
[2018-09-30 11:02:09,681 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 0.23 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 42.69 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 25.13 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 296.61 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 251298.34 ms. Allocated memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: -34.6 MB). Free memory was 1.4 GB in the beginning and 951.3 MB in the end (delta: 496.4 MB). Peak memory consumption was 461.8 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- TimeoutResultAtElement [Line: 16]: Timeout (TraceAbstraction)
Unable to prove that assertion always holds (line 16). Cancelled while BasicCegarLoop was constructing difference of abstraction (170states) and FLOYD_HOARE automaton (currently 8 states, 170 states before enhancement), while ReachableStatesComputation was computing reachable states (12 states constructedinput type IntersectNwa).
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 6 locations, 1 error locations. TIMEOUT Result, 251.2s OverallTime, 84 OverallIterations, 84 TraceHistogramMax, 111.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 169 SDtfs, 0 SDslu, 1 SDs, 0 SdLazy, 14406 SolverSat, 241 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10708 GetRequests, 3569 SyntacticMatches, 0 SemanticMatches, 7139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=83, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 83 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 4.0s SatisfiabilityAnalysisTime, 131.5s InterpolantComputationTime, 14445 NumberOfCodeBlocks, 14445 NumberOfCodeBlocksAsserted, 1945 NumberOfCheckSat, 14278 ConstructedInterpolants, 0 QuantifiedInterpolants, 9653252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 14608 ConjunctsInSsa, 3735 ConjunctsInUnsatCore, 167 InterpolantComputations, 1 PerfectInterpolantSequences, 0/395080 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/LexIndexValue-Pointer-Reduced.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_11-02-09-691.csv
Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/LexIndexValue-Pointer-Reduced.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_11-02-09-691.csv
Completed graceful shutdown