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/20170304-DifficultPathPrograms/seq.i_4.bpl
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This is Ultimate 0.1.23-00a8621
[2018-09-30 10:56:09,213 INFO L170 SettingsManager]: Resetting all preferences to default values...
[2018-09-30 10:56:09,215 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values
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[2018-09-30 10:56:09,255 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2018-09-30 10:56:09,260 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values
[2018-09-30 10:56:09,261 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values
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[2018-09-30 10:56:09,263 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values
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[2018-09-30 10:56:09,265 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values
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[2018-09-30 10:56:09,267 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values
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[2018-09-30 10:56:09,273 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 10:56:09,291 INFO L110 SettingsManager]: Loading preferences was successful
[2018-09-30 10:56:09,292 INFO L112 SettingsManager]: Preferences different from defaults after loading the file:
[2018-09-30 10:56:09,293 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults:
[2018-09-30 10:56:09,293 INFO L133 SettingsManager]: * to procedures, called more than once=true
[2018-09-30 10:56:09,297 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2018-09-30 10:56:09,297 INFO L133 SettingsManager]: * Create parallel compositions if possible=false
[2018-09-30 10:56:09,297 INFO L133 SettingsManager]: * Use SBE=true
[2018-09-30 10:56:09,298 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2018-09-30 10:56:09,298 INFO L133 SettingsManager]: * sizeof long=4
[2018-09-30 10:56:09,298 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true
[2018-09-30 10:56:09,298 INFO L133 SettingsManager]: * sizeof POINTER=4
[2018-09-30 10:56:09,298 INFO L133 SettingsManager]: * Check division by zero=IGNORE
[2018-09-30 10:56:09,298 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE
[2018-09-30 10:56:09,299 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE
[2018-09-30 10:56:09,299 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE
[2018-09-30 10:56:09,299 INFO L133 SettingsManager]: * sizeof long double=12
[2018-09-30 10:56:09,299 INFO L133 SettingsManager]: * Check if freed pointer was valid=false
[2018-09-30 10:56:09,301 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE
[2018-09-30 10:56:09,301 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2018-09-30 10:56:09,301 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements
[2018-09-30 10:56:09,301 INFO L133 SettingsManager]: * To the following directory=./dump/
[2018-09-30 10:56:09,301 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode
[2018-09-30 10:56:09,301 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2018-09-30 10:56:09,302 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2018-09-30 10:56:09,302 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP
[2018-09-30 10:56:09,302 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2018-09-30 10:56:09,302 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL
[2018-09-30 10:56:09,302 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode
[2018-09-30 10:56:09,303 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2018-09-30 10:56:09,303 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2018-09-30 10:56:09,303 INFO L133 SettingsManager]: * Use predicate trie based predicate unification=true
[2018-09-30 10:56:09,365 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp
[2018-09-30 10:56:09,379 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2018-09-30 10:56:09,385 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2018-09-30 10:56:09,387 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser...
[2018-09-30 10:56:09,387 INFO L276 PluginConnector]: Boogie PL CUP Parser initialized
[2018-09-30 10:56:09,388 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/seq.i_4.bpl
[2018-09-30 10:56:09,388 INFO L111 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/programs/20170304-DifficultPathPrograms/seq.i_4.bpl'
[2018-09-30 10:56:09,444 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2018-09-30 10:56:09,447 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements.
[2018-09-30 10:56:09,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner----------------------------
[2018-09-30 10:56:09,448 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner...
[2018-09-30 10:56:09,448 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized
[2018-09-30 10:56:09,468 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:09" (1/1) ...
[2018-09-30 10:56:09,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:09" (1/1) ...
[2018-09-30 10:56:09,487 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner----------------------------
[2018-09-30 10:56:09,488 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2018-09-30 10:56:09,488 INFO L271 PluginConnector]: Initializing Boogie Preprocessor...
[2018-09-30 10:56:09,488 INFO L276 PluginConnector]: Boogie Preprocessor initialized
[2018-09-30 10:56:09,499 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:09" (1/1) ...
[2018-09-30 10:56:09,499 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:09" (1/1) ...
[2018-09-30 10:56:09,500 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:09" (1/1) ...
[2018-09-30 10:56:09,501 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:09" (1/1) ...
[2018-09-30 10:56:09,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:09" (1/1) ...
[2018-09-30 10:56:09,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:09" (1/1) ...
[2018-09-30 10:56:09,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:09" (1/1) ...
[2018-09-30 10:56:09,508 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2018-09-30 10:56:09,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder----------------------------
[2018-09-30 10:56:09,509 INFO L271 PluginConnector]: Initializing RCFGBuilder...
[2018-09-30 10:56:09,509 INFO L276 PluginConnector]: RCFGBuilder initialized
[2018-09-30 10:56:09,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:09" (1/1) ...
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory: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 10:56:09,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2018-09-30 10:56:09,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2018-09-30 10:56:09,905 INFO L348 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2018-09-30 10:56:09,906 INFO L202 PluginConnector]: Adding new model seq.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:56:09 BoogieIcfgContainer
[2018-09-30 10:56:09,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2018-09-30 10:56:09,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction----------------------------
[2018-09-30 10:56:09,907 INFO L271 PluginConnector]: Initializing TraceAbstraction...
[2018-09-30 10:56:09,913 INFO L276 PluginConnector]: TraceAbstraction initialized
[2018-09-30 10:56:09,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 30.09 10:56:09" (1/2) ...
[2018-09-30 10:56:09,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@535c96d7 and model type seq.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.09 10:56:09, skipping insertion in model container
[2018-09-30 10:56:09,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "seq.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.09 10:56:09" (2/2) ...
[2018-09-30 10:56:09,918 INFO L112 eAbstractionObserver]: Analyzing ICFG seq.i_4.bpl
[2018-09-30 10:56:09,928 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION
[2018-09-30 10:56:09,937 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2018-09-30 10:56:09,988 INFO L133 ementStrategyFactory]: Using default assertion order modulation
[2018-09-30 10:56:09,989 INFO L381 AbstractCegarLoop]: Interprodecural is true
[2018-09-30 10:56:09,989 INFO L382 AbstractCegarLoop]: Hoare is true
[2018-09-30 10:56:09,989 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP
[2018-09-30 10:56:09,989 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2018-09-30 10:56:09,990 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2018-09-30 10:56:09,990 INFO L386 AbstractCegarLoop]: Difference is false
[2018-09-30 10:56:09,990 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2018-09-30 10:56:09,990 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2018-09-30 10:56:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states.
[2018-09-30 10:56:10,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7
[2018-09-30 10:56:10,012 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:10,013 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1]
[2018-09-30 10:56:10,014 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:10,021 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:10,022 INFO L82 PathProgramCache]: Analyzing trace with hash 889539531, now seen corresponding path program 1 times
[2018-09-30 10:56:10,024 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:10,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:10,083 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:10,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:56:10,084 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:10,292 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 10:56:10,295 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-30 10:56:10,295 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3
[2018-09-30 10:56:10,300 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states
[2018-09-30 10:56:10,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants.
[2018-09-30 10:56:10,316 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:10,319 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 4 states.
[2018-09-30 10:56:10,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:10,539 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions.
[2018-09-30 10:56:10,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states.
[2018-09-30 10:56:10,541 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6
[2018-09-30 10:56:10,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:10,558 INFO L225 Difference]: With dead ends: 16
[2018-09-30 10:56:10,558 INFO L226 Difference]: Without dead ends: 9
[2018-09-30 10:56:10,564 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:10,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states.
[2018-09-30 10:56:10,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9.
[2018-09-30 10:56:10,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states.
[2018-09-30 10:56:10,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 10 transitions.
[2018-09-30 10:56:10,606 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 10 transitions. Word has length 6
[2018-09-30 10:56:10,607 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:10,607 INFO L480 AbstractCegarLoop]: Abstraction has 9 states and 10 transitions.
[2018-09-30 10:56:10,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states.
[2018-09-30 10:56:10,607 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 10 transitions.
[2018-09-30 10:56:10,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9
[2018-09-30 10:56:10,608 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:10,608 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1]
[2018-09-30 10:56:10,608 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:10,608 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:10,608 INFO L82 PathProgramCache]: Analyzing trace with hash 198621957, now seen corresponding path program 1 times
[2018-09-30 10:56:10,609 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:10,609 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:10,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:10,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:56:10,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:10,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:10,685 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2018-09-30 10:56:10,685 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2018-09-30 10:56:10,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states
[2018-09-30 10:56:10,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2018-09-30 10:56:10,688 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:10,688 INFO L87 Difference]: Start difference. First operand 9 states and 10 transitions. Second operand 5 states.
[2018-09-30 10:56:11,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:11,199 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions.
[2018-09-30 10:56:11,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2018-09-30 10:56:11,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8
[2018-09-30 10:56:11,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:11,201 INFO L225 Difference]: With dead ends: 17
[2018-09-30 10:56:11,201 INFO L226 Difference]: Without dead ends: 15
[2018-09-30 10:56:11,202 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:11,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states.
[2018-09-30 10:56:11,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 11.
[2018-09-30 10:56:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states.
[2018-09-30 10:56:11,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions.
[2018-09-30 10:56:11,206 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 8
[2018-09-30 10:56:11,206 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:11,206 INFO L480 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions.
[2018-09-30 10:56:11,207 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states.
[2018-09-30 10:56:11,207 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions.
[2018-09-30 10:56:11,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11
[2018-09-30 10:56:11,207 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:11,207 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1]
[2018-09-30 10:56:11,208 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:11,208 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:11,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1897191999, now seen corresponding path program 1 times
[2018-09-30 10:56:11,208 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:11,209 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:11,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:11,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:56:11,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:11,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:11,295 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:11,296 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:11,296 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 10:56:11,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:56:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:11,336 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:11,591 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:11,613 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:11,614 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9
[2018-09-30 10:56:11,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-09-30 10:56:11,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-09-30 10:56:11,615 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:11,615 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 10 states.
[2018-09-30 10:56:12,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:12,319 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions.
[2018-09-30 10:56:12,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states.
[2018-09-30 10:56:12,321 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 10
[2018-09-30 10:56:12,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:12,323 INFO L225 Difference]: With dead ends: 20
[2018-09-30 10:56:12,323 INFO L226 Difference]: Without dead ends: 13
[2018-09-30 10:56:12,324 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:12,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states.
[2018-09-30 10:56:12,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13.
[2018-09-30 10:56:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states.
[2018-09-30 10:56:12,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions.
[2018-09-30 10:56:12,329 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10
[2018-09-30 10:56:12,329 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:12,329 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions.
[2018-09-30 10:56:12,329 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-09-30 10:56:12,329 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions.
[2018-09-30 10:56:12,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13
[2018-09-30 10:56:12,330 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:12,330 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1]
[2018-09-30 10:56:12,330 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:12,331 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:12,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1765270407, now seen corresponding path program 2 times
[2018-09-30 10:56:12,331 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:12,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:12,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:12,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:56:12,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:12,455 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:12,456 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:12,456 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:56:12,469 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:56:12,483 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:56:12,483 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:12,487 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:12,615 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:12,616 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7
[2018-09-30 10:56:12,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states
[2018-09-30 10:56:12,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants.
[2018-09-30 10:56:12,617 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:12,617 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 8 states.
[2018-09-30 10:56:12,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:12,876 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions.
[2018-09-30 10:56:12,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states.
[2018-09-30 10:56:12,877 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12
[2018-09-30 10:56:12,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:12,878 INFO L225 Difference]: With dead ends: 21
[2018-09-30 10:56:12,878 INFO L226 Difference]: Without dead ends: 19
[2018-09-30 10:56:12,878 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:12,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states.
[2018-09-30 10:56:12,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 15.
[2018-09-30 10:56:12,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states.
[2018-09-30 10:56:12,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions.
[2018-09-30 10:56:12,883 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12
[2018-09-30 10:56:12,884 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:12,884 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions.
[2018-09-30 10:56:12,884 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states.
[2018-09-30 10:56:12,884 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions.
[2018-09-30 10:56:12,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15
[2018-09-30 10:56:12,885 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:12,885 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1]
[2018-09-30 10:56:12,885 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:12,886 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:12,886 INFO L82 PathProgramCache]: Analyzing trace with hash 87273139, now seen corresponding path program 3 times
[2018-09-30 10:56:12,886 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:12,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:12,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:12,887 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:12,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:12,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:12,978 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:12,979 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:12,979 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 10:56:12,993 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:56:13,012 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s)
[2018-09-30 10:56:13,013 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:13,016 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:13,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:13,340 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:13,341 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13
[2018-09-30 10:56:13,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states
[2018-09-30 10:56:13,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2018-09-30 10:56:13,342 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:13,342 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 14 states.
[2018-09-30 10:56:13,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:13,753 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions.
[2018-09-30 10:56:13,756 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states.
[2018-09-30 10:56:13,757 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 14
[2018-09-30 10:56:13,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:13,757 INFO L225 Difference]: With dead ends: 26
[2018-09-30 10:56:13,758 INFO L226 Difference]: Without dead ends: 17
[2018-09-30 10:56:13,758 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:13,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states.
[2018-09-30 10:56:13,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17.
[2018-09-30 10:56:13,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states.
[2018-09-30 10:56:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions.
[2018-09-30 10:56:13,763 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 14
[2018-09-30 10:56:13,763 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:13,763 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions.
[2018-09-30 10:56:13,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2018-09-30 10:56:13,763 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions.
[2018-09-30 10:56:13,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17
[2018-09-30 10:56:13,764 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:13,764 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1]
[2018-09-30 10:56:13,764 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:13,765 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:13,765 INFO L82 PathProgramCache]: Analyzing trace with hash -1096334355, now seen corresponding path program 4 times
[2018-09-30 10:56:13,765 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:13,765 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:13,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:13,766 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:13,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:13,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:13,893 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:13,893 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:13,894 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:56:13,906 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:56:13,921 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:56:13,922 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:13,923 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:13,991 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:14,012 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:14,012 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8
[2018-09-30 10:56:14,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states
[2018-09-30 10:56:14,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants.
[2018-09-30 10:56:14,013 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:14,013 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 9 states.
[2018-09-30 10:56:14,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:14,288 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions.
[2018-09-30 10:56:14,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states.
[2018-09-30 10:56:14,289 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16
[2018-09-30 10:56:14,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:14,290 INFO L225 Difference]: With dead ends: 25
[2018-09-30 10:56:14,290 INFO L226 Difference]: Without dead ends: 23
[2018-09-30 10:56:14,291 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:14,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states.
[2018-09-30 10:56:14,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 19.
[2018-09-30 10:56:14,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states.
[2018-09-30 10:56:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions.
[2018-09-30 10:56:14,296 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16
[2018-09-30 10:56:14,296 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:14,297 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions.
[2018-09-30 10:56:14,297 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states.
[2018-09-30 10:56:14,297 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions.
[2018-09-30 10:56:14,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19
[2018-09-30 10:56:14,298 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:14,298 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1]
[2018-09-30 10:56:14,298 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:14,298 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:14,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1310275289, now seen corresponding path program 5 times
[2018-09-30 10:56:14,299 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:14,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:14,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:14,300 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:14,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:14,431 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:14,432 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:14,432 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:56:14,448 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:56:14,474 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s)
[2018-09-30 10:56:14,474 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:14,477 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:14,605 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:14,625 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:14,626 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17
[2018-09-30 10:56:14,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states
[2018-09-30 10:56:14,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2018-09-30 10:56:14,627 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:14,627 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 18 states.
[2018-09-30 10:56:15,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:15,322 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions.
[2018-09-30 10:56:15,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states.
[2018-09-30 10:56:15,323 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 18
[2018-09-30 10:56:15,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:15,323 INFO L225 Difference]: With dead ends: 32
[2018-09-30 10:56:15,324 INFO L226 Difference]: Without dead ends: 21
[2018-09-30 10:56:15,324 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 10:56:15,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states.
[2018-09-30 10:56:15,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21.
[2018-09-30 10:56:15,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states.
[2018-09-30 10:56:15,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions.
[2018-09-30 10:56:15,329 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 18
[2018-09-30 10:56:15,330 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:15,330 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions.
[2018-09-30 10:56:15,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2018-09-30 10:56:15,330 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions.
[2018-09-30 10:56:15,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21
[2018-09-30 10:56:15,331 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:15,331 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 1, 1, 1, 1]
[2018-09-30 10:56:15,331 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:15,332 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:15,332 INFO L82 PathProgramCache]: Analyzing trace with hash -1330040479, now seen corresponding path program 6 times
[2018-09-30 10:56:15,332 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:15,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:15,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:15,333 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:15,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:15,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:15,497 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:15,497 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:15,497 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:56:15,510 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:56:15,530 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s)
[2018-09-30 10:56:15,531 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:15,533 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:15,606 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:15,628 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:15,628 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9
[2018-09-30 10:56:15,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states
[2018-09-30 10:56:15,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants.
[2018-09-30 10:56:15,629 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:15,629 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 10 states.
[2018-09-30 10:56:15,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:15,909 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions.
[2018-09-30 10:56:15,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states.
[2018-09-30 10:56:15,911 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 20
[2018-09-30 10:56:15,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:15,912 INFO L225 Difference]: With dead ends: 29
[2018-09-30 10:56:15,912 INFO L226 Difference]: Without dead ends: 27
[2018-09-30 10:56:15,912 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:15,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states.
[2018-09-30 10:56:15,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23.
[2018-09-30 10:56:15,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states.
[2018-09-30 10:56:15,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions.
[2018-09-30 10:56:15,918 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 20
[2018-09-30 10:56:15,918 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:15,919 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions.
[2018-09-30 10:56:15,919 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states.
[2018-09-30 10:56:15,919 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions.
[2018-09-30 10:56:15,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23
[2018-09-30 10:56:15,919 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:15,920 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 1, 1, 1, 1]
[2018-09-30 10:56:15,920 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:15,920 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:15,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1731406235, now seen corresponding path program 7 times
[2018-09-30 10:56:15,920 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:15,920 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:15,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:15,921 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:15,922 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:15,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:16,074 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:16,074 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:16,075 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:56:16,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:56:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:16,104 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 20 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:16,505 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:16,505 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21
[2018-09-30 10:56:16,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states
[2018-09-30 10:56:16,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2018-09-30 10:56:16,506 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:16,506 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 22 states.
[2018-09-30 10:56:17,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:17,288 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions.
[2018-09-30 10:56:17,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states.
[2018-09-30 10:56:17,289 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 22
[2018-09-30 10:56:17,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:17,289 INFO L225 Difference]: With dead ends: 38
[2018-09-30 10:56:17,289 INFO L226 Difference]: Without dead ends: 25
[2018-09-30 10:56:17,290 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:17,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states.
[2018-09-30 10:56:17,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25.
[2018-09-30 10:56:17,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states.
[2018-09-30 10:56:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions.
[2018-09-30 10:56:17,295 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 22
[2018-09-30 10:56:17,295 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:17,295 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions.
[2018-09-30 10:56:17,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2018-09-30 10:56:17,296 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions.
[2018-09-30 10:56:17,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25
[2018-09-30 10:56:17,296 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:17,296 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 1, 1, 1, 1]
[2018-09-30 10:56:17,297 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:17,297 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:17,297 INFO L82 PathProgramCache]: Analyzing trace with hash 1774380245, now seen corresponding path program 8 times
[2018-09-30 10:56:17,297 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:17,297 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:17,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:17,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:56:17,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:17,437 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:17,437 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:17,438 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 10:56:17,449 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:56:17,466 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:56:17,466 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:17,468 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:17,583 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:17,605 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:17,606 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 10
[2018-09-30 10:56:17,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states
[2018-09-30 10:56:17,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants.
[2018-09-30 10:56:17,606 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:17,607 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 11 states.
[2018-09-30 10:56:17,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:17,906 INFO L93 Difference]: Finished difference Result 33 states and 34 transitions.
[2018-09-30 10:56:17,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states.
[2018-09-30 10:56:17,907 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24
[2018-09-30 10:56:17,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:17,908 INFO L225 Difference]: With dead ends: 33
[2018-09-30 10:56:17,908 INFO L226 Difference]: Without dead ends: 31
[2018-09-30 10:56:17,909 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:17,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states.
[2018-09-30 10:56:17,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27.
[2018-09-30 10:56:17,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states.
[2018-09-30 10:56:17,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions.
[2018-09-30 10:56:17,915 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 24
[2018-09-30 10:56:17,916 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:17,916 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions.
[2018-09-30 10:56:17,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states.
[2018-09-30 10:56:17,916 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions.
[2018-09-30 10:56:17,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27
[2018-09-30 10:56:17,917 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:17,917 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 1, 1, 1, 1]
[2018-09-30 10:56:17,917 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:17,917 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:17,918 INFO L82 PathProgramCache]: Analyzing trace with hash 77451279, now seen corresponding path program 9 times
[2018-09-30 10:56:17,918 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:17,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:17,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:17,919 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:17,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:17,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:18,325 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:18,325 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:18,326 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 10:56:18,334 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:56:18,356 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s)
[2018-09-30 10:56:18,357 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:18,359 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:18,893 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 30 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:18,923 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:18,923 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 25
[2018-09-30 10:56:18,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states
[2018-09-30 10:56:18,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2018-09-30 10:56:18,927 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:18,927 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 26 states.
[2018-09-30 10:56:19,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:19,543 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions.
[2018-09-30 10:56:19,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states.
[2018-09-30 10:56:19,543 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 26
[2018-09-30 10:56:19,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:19,544 INFO L225 Difference]: With dead ends: 44
[2018-09-30 10:56:19,544 INFO L226 Difference]: Without dead ends: 29
[2018-09-30 10:56:19,544 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:19,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states.
[2018-09-30 10:56:19,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29.
[2018-09-30 10:56:19,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states.
[2018-09-30 10:56:19,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions.
[2018-09-30 10:56:19,550 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 26
[2018-09-30 10:56:19,551 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:19,551 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions.
[2018-09-30 10:56:19,551 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states.
[2018-09-30 10:56:19,551 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions.
[2018-09-30 10:56:19,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29
[2018-09-30 10:56:19,552 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:19,552 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 5, 1, 1, 1, 1]
[2018-09-30 10:56:19,552 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:19,552 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:19,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1980325449, now seen corresponding path program 10 times
[2018-09-30 10:56:19,553 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:19,553 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:19,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:19,554 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:19,554 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:19,721 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:19,721 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:19,721 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 10:56:19,729 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:56:19,747 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:56:19,748 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:19,750 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 42 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:19,843 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:19,843 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 11
[2018-09-30 10:56:19,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states
[2018-09-30 10:56:19,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants.
[2018-09-30 10:56:19,844 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:19,844 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 12 states.
[2018-09-30 10:56:20,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:20,345 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions.
[2018-09-30 10:56:20,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states.
[2018-09-30 10:56:20,346 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 28
[2018-09-30 10:56:20,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:20,347 INFO L225 Difference]: With dead ends: 37
[2018-09-30 10:56:20,347 INFO L226 Difference]: Without dead ends: 35
[2018-09-30 10:56:20,347 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:20,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states.
[2018-09-30 10:56:20,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31.
[2018-09-30 10:56:20,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states.
[2018-09-30 10:56:20,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions.
[2018-09-30 10:56:20,354 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 28
[2018-09-30 10:56:20,355 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:20,355 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions.
[2018-09-30 10:56:20,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states.
[2018-09-30 10:56:20,355 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions.
[2018-09-30 10:56:20,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31
[2018-09-30 10:56:20,356 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:20,356 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 1, 1, 1, 1]
[2018-09-30 10:56:20,356 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:20,356 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:20,357 INFO L82 PathProgramCache]: Analyzing trace with hash 422296707, now seen corresponding path program 11 times
[2018-09-30 10:56:20,357 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:20,357 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:20,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:20,358 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:20,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:20,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:20,535 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:20,535 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:20,535 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 10:56:20,543 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:56:20,568 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s)
[2018-09-30 10:56:20,568 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:20,571 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:20,884 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 42 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:20,905 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:20,905 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 29
[2018-09-30 10:56:20,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states
[2018-09-30 10:56:20,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2018-09-30 10:56:20,906 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:20,906 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 30 states.
[2018-09-30 10:56:22,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:22,216 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions.
[2018-09-30 10:56:22,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states.
[2018-09-30 10:56:22,216 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 30
[2018-09-30 10:56:22,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:22,217 INFO L225 Difference]: With dead ends: 50
[2018-09-30 10:56:22,217 INFO L226 Difference]: Without dead ends: 33
[2018-09-30 10:56:22,218 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:22,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states.
[2018-09-30 10:56:22,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33.
[2018-09-30 10:56:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states.
[2018-09-30 10:56:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions.
[2018-09-30 10:56:22,224 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 30
[2018-09-30 10:56:22,224 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:22,224 INFO L480 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions.
[2018-09-30 10:56:22,225 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states.
[2018-09-30 10:56:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions.
[2018-09-30 10:56:22,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33
[2018-09-30 10:56:22,226 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:22,226 INFO L375 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 1, 1, 1, 1]
[2018-09-30 10:56:22,226 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:22,226 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:22,226 INFO L82 PathProgramCache]: Analyzing trace with hash -1320051267, now seen corresponding path program 12 times
[2018-09-30 10:56:22,226 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:22,227 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:22,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:22,228 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:22,228 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:22,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:22,450 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:22,451 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:22,451 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 10:56:22,465 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:56:22,496 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s)
[2018-09-30 10:56:22,496 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:22,498 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:22,578 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 56 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:22,598 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:22,598 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 12
[2018-09-30 10:56:22,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states
[2018-09-30 10:56:22,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants.
[2018-09-30 10:56:22,599 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:22,599 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 13 states.
[2018-09-30 10:56:23,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:23,031 INFO L93 Difference]: Finished difference Result 41 states and 42 transitions.
[2018-09-30 10:56:23,031 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states.
[2018-09-30 10:56:23,031 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32
[2018-09-30 10:56:23,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:23,032 INFO L225 Difference]: With dead ends: 41
[2018-09-30 10:56:23,033 INFO L226 Difference]: Without dead ends: 39
[2018-09-30 10:56:23,033 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:23,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states.
[2018-09-30 10:56:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 35.
[2018-09-30 10:56:23,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states.
[2018-09-30 10:56:23,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions.
[2018-09-30 10:56:23,040 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 32
[2018-09-30 10:56:23,040 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:23,040 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions.
[2018-09-30 10:56:23,040 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states.
[2018-09-30 10:56:23,040 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions.
[2018-09-30 10:56:23,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35
[2018-09-30 10:56:23,041 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:23,041 INFO L375 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 1, 1, 1, 1]
[2018-09-30 10:56:23,041 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:23,041 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:23,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1553862921, now seen corresponding path program 13 times
[2018-09-30 10:56:23,042 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:23,042 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:23,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:23,042 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:23,043 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:23,218 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:23,218 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 10:56:23,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:56:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:23,249 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:23,480 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 56 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:23,501 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:23,501 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33
[2018-09-30 10:56:23,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states
[2018-09-30 10:56:23,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2018-09-30 10:56:23,502 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:23,502 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 34 states.
[2018-09-30 10:56:24,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:24,632 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions.
[2018-09-30 10:56:24,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states.
[2018-09-30 10:56:24,633 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 34
[2018-09-30 10:56:24,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:24,633 INFO L225 Difference]: With dead ends: 56
[2018-09-30 10:56:24,634 INFO L226 Difference]: Without dead ends: 37
[2018-09-30 10:56:24,634 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:24,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states.
[2018-09-30 10:56:24,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37.
[2018-09-30 10:56:24,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states.
[2018-09-30 10:56:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions.
[2018-09-30 10:56:24,640 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 34
[2018-09-30 10:56:24,640 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:24,641 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions.
[2018-09-30 10:56:24,641 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states.
[2018-09-30 10:56:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions.
[2018-09-30 10:56:24,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37
[2018-09-30 10:56:24,641 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:24,642 INFO L375 BasicCegarLoop]: trace histogram [9, 8, 8, 7, 1, 1, 1, 1]
[2018-09-30 10:56:24,642 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:24,642 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:24,642 INFO L82 PathProgramCache]: Analyzing trace with hash 115385137, now seen corresponding path program 14 times
[2018-09-30 10:56:24,642 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:24,642 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:24,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:24,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:56:24,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:24,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:24,831 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:24,831 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 10:56:24,839 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:56:24,871 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:56:24,872 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:24,875 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:25,038 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 72 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:25,060 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:25,060 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 13
[2018-09-30 10:56:25,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states
[2018-09-30 10:56:25,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants.
[2018-09-30 10:56:25,061 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:25,061 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 14 states.
[2018-09-30 10:56:26,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:26,058 INFO L93 Difference]: Finished difference Result 45 states and 46 transitions.
[2018-09-30 10:56:26,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states.
[2018-09-30 10:56:26,059 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 36
[2018-09-30 10:56:26,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:26,060 INFO L225 Difference]: With dead ends: 45
[2018-09-30 10:56:26,060 INFO L226 Difference]: Without dead ends: 43
[2018-09-30 10:56:26,061 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:26,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states.
[2018-09-30 10:56:26,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 39.
[2018-09-30 10:56:26,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states.
[2018-09-30 10:56:26,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions.
[2018-09-30 10:56:26,071 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 36
[2018-09-30 10:56:26,071 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:26,071 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions.
[2018-09-30 10:56:26,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states.
[2018-09-30 10:56:26,072 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions.
[2018-09-30 10:56:26,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39
[2018-09-30 10:56:26,072 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:26,072 INFO L375 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 1, 1, 1, 1]
[2018-09-30 10:56:26,073 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:26,073 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:26,073 INFO L82 PathProgramCache]: Analyzing trace with hash -783980693, now seen corresponding path program 15 times
[2018-09-30 10:56:26,073 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:26,073 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:26,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:26,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:26,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:26,370 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:26,370 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:26,370 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 10:56:26,383 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:56:26,435 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 9 check-sat command(s)
[2018-09-30 10:56:26,435 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:26,438 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:27,159 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 72 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:27,194 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:27,194 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 37
[2018-09-30 10:56:27,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states
[2018-09-30 10:56:27,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants.
[2018-09-30 10:56:27,195 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:27,195 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 38 states.
[2018-09-30 10:56:28,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:28,397 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions.
[2018-09-30 10:56:28,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states.
[2018-09-30 10:56:28,397 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 38
[2018-09-30 10:56:28,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:28,398 INFO L225 Difference]: With dead ends: 62
[2018-09-30 10:56:28,398 INFO L226 Difference]: Without dead ends: 41
[2018-09-30 10:56:28,398 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:28,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states.
[2018-09-30 10:56:28,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41.
[2018-09-30 10:56:28,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states.
[2018-09-30 10:56:28,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions.
[2018-09-30 10:56:28,405 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 38
[2018-09-30 10:56:28,405 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:28,405 INFO L480 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions.
[2018-09-30 10:56:28,405 INFO L481 AbstractCegarLoop]: Interpolant automaton has 38 states.
[2018-09-30 10:56:28,406 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions.
[2018-09-30 10:56:28,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41
[2018-09-30 10:56:28,406 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:28,407 INFO L375 BasicCegarLoop]: trace histogram [10, 9, 9, 8, 1, 1, 1, 1]
[2018-09-30 10:56:28,407 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:28,407 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:28,407 INFO L82 PathProgramCache]: Analyzing trace with hash 830172837, now seen corresponding path program 16 times
[2018-09-30 10:56:28,407 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:28,407 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:28,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:28,408 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:28,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:28,668 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:28,669 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:28,669 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 10:56:28,676 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:56:28,703 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:56:28,703 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:28,706 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 90 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:28,803 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:28,803 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 14
[2018-09-30 10:56:28,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states
[2018-09-30 10:56:28,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants.
[2018-09-30 10:56:28,803 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:28,804 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 15 states.
[2018-09-30 10:56:29,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:29,233 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions.
[2018-09-30 10:56:29,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states.
[2018-09-30 10:56:29,234 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40
[2018-09-30 10:56:29,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:29,235 INFO L225 Difference]: With dead ends: 49
[2018-09-30 10:56:29,236 INFO L226 Difference]: Without dead ends: 47
[2018-09-30 10:56:29,236 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:29,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states.
[2018-09-30 10:56:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43.
[2018-09-30 10:56:29,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states.
[2018-09-30 10:56:29,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions.
[2018-09-30 10:56:29,244 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 40
[2018-09-30 10:56:29,245 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:29,245 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions.
[2018-09-30 10:56:29,245 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states.
[2018-09-30 10:56:29,245 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions.
[2018-09-30 10:56:29,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43
[2018-09-30 10:56:29,246 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:29,246 INFO L375 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 1, 1, 1, 1]
[2018-09-30 10:56:29,246 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:29,246 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:29,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1067768353, now seen corresponding path program 17 times
[2018-09-30 10:56:29,246 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:29,247 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:29,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:29,247 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:29,247 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:29,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:29,580 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:29,580 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:56:29,588 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:56:29,620 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 10 check-sat command(s)
[2018-09-30 10:56:29,621 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:29,623 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:30,501 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 90 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:30,525 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:30,525 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 41
[2018-09-30 10:56:30,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 42 states
[2018-09-30 10:56:30,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants.
[2018-09-30 10:56:30,526 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:30,526 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 42 states.
[2018-09-30 10:56:32,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:32,615 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions.
[2018-09-30 10:56:32,615 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states.
[2018-09-30 10:56:32,615 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 42
[2018-09-30 10:56:32,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:32,616 INFO L225 Difference]: With dead ends: 68
[2018-09-30 10:56:32,616 INFO L226 Difference]: Without dead ends: 45
[2018-09-30 10:56:32,616 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:32,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states.
[2018-09-30 10:56:32,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45.
[2018-09-30 10:56:32,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states.
[2018-09-30 10:56:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions.
[2018-09-30 10:56:32,625 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 42
[2018-09-30 10:56:32,625 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:32,625 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions.
[2018-09-30 10:56:32,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 42 states.
[2018-09-30 10:56:32,625 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions.
[2018-09-30 10:56:32,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45
[2018-09-30 10:56:32,626 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:32,626 INFO L375 BasicCegarLoop]: trace histogram [11, 10, 10, 9, 1, 1, 1, 1]
[2018-09-30 10:56:32,626 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:32,626 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:32,627 INFO L82 PathProgramCache]: Analyzing trace with hash 2070347801, now seen corresponding path program 18 times
[2018-09-30 10:56:32,627 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:32,627 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:32,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:32,628 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:32,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:32,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:33,531 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 110 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:33,531 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:33,532 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 10:56:33,546 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:56:33,579 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 11 check-sat command(s)
[2018-09-30 10:56:33,580 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:33,581 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:33,688 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 110 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:33,709 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:33,709 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 15
[2018-09-30 10:56:33,709 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states
[2018-09-30 10:56:33,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants.
[2018-09-30 10:56:33,710 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:33,710 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 16 states.
[2018-09-30 10:56:34,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:34,409 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions.
[2018-09-30 10:56:34,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states.
[2018-09-30 10:56:34,410 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 44
[2018-09-30 10:56:34,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:34,410 INFO L225 Difference]: With dead ends: 53
[2018-09-30 10:56:34,410 INFO L226 Difference]: Without dead ends: 51
[2018-09-30 10:56:34,410 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:34,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states.
[2018-09-30 10:56:34,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 47.
[2018-09-30 10:56:34,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states.
[2018-09-30 10:56:34,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions.
[2018-09-30 10:56:34,418 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 44
[2018-09-30 10:56:34,418 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:34,418 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions.
[2018-09-30 10:56:34,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states.
[2018-09-30 10:56:34,418 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions.
[2018-09-30 10:56:34,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47
[2018-09-30 10:56:34,419 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:34,419 INFO L375 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 1, 1, 1, 1]
[2018-09-30 10:56:34,419 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:34,419 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:34,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1034431059, now seen corresponding path program 19 times
[2018-09-30 10:56:34,419 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:34,420 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:34,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:34,420 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:34,421 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:34,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:34,662 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:34,663 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:34,663 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 10:56:34,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:56:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:34,701 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 220 backedges. 110 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:35,498 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:35,498 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45
[2018-09-30 10:56:35,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 46 states
[2018-09-30 10:56:35,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants.
[2018-09-30 10:56:35,499 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:35,499 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 46 states.
[2018-09-30 10:56:37,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:37,162 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions.
[2018-09-30 10:56:37,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states.
[2018-09-30 10:56:37,162 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 46
[2018-09-30 10:56:37,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:37,162 INFO L225 Difference]: With dead ends: 74
[2018-09-30 10:56:37,162 INFO L226 Difference]: Without dead ends: 49
[2018-09-30 10:56:37,163 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:37,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states.
[2018-09-30 10:56:37,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49.
[2018-09-30 10:56:37,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states.
[2018-09-30 10:56:37,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions.
[2018-09-30 10:56:37,170 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 46
[2018-09-30 10:56:37,170 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:37,170 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions.
[2018-09-30 10:56:37,170 INFO L481 AbstractCegarLoop]: Interpolant automaton has 46 states.
[2018-09-30 10:56:37,171 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions.
[2018-09-30 10:56:37,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49
[2018-09-30 10:56:37,171 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:37,171 INFO L375 BasicCegarLoop]: trace histogram [12, 11, 11, 10, 1, 1, 1, 1]
[2018-09-30 10:56:37,171 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:37,172 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:37,172 INFO L82 PathProgramCache]: Analyzing trace with hash 2120767373, now seen corresponding path program 20 times
[2018-09-30 10:56:37,172 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:37,172 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:37,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:37,173 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:56:37,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:37,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 132 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:37,357 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:37,357 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 10:56:37,367 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:56:37,397 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:56:37,397 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:37,399 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:37,472 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 132 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:37,498 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:37,498 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 16
[2018-09-30 10:56:37,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states
[2018-09-30 10:56:37,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants.
[2018-09-30 10:56:37,499 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:37,499 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 17 states.
[2018-09-30 10:56:38,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:38,012 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions.
[2018-09-30 10:56:38,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states.
[2018-09-30 10:56:38,014 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 48
[2018-09-30 10:56:38,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:38,015 INFO L225 Difference]: With dead ends: 57
[2018-09-30 10:56:38,015 INFO L226 Difference]: Without dead ends: 55
[2018-09-30 10:56:38,015 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:38,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states.
[2018-09-30 10:56:38,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51.
[2018-09-30 10:56:38,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states.
[2018-09-30 10:56:38,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions.
[2018-09-30 10:56:38,024 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 48
[2018-09-30 10:56:38,024 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:38,024 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions.
[2018-09-30 10:56:38,024 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states.
[2018-09-30 10:56:38,025 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions.
[2018-09-30 10:56:38,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51
[2018-09-30 10:56:38,025 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:38,025 INFO L375 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 1, 1, 1, 1]
[2018-09-30 10:56:38,025 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:38,026 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:38,026 INFO L82 PathProgramCache]: Analyzing trace with hash -2051967801, now seen corresponding path program 21 times
[2018-09-30 10:56:38,026 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:38,026 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:38,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:38,027 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:38,027 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:38,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:38,288 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:38,288 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:38,288 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:56:38,296 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:56:38,330 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 12 check-sat command(s)
[2018-09-30 10:56:38,330 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:38,332 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 132 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:38,965 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:38,966 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 49
[2018-09-30 10:56:38,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 50 states
[2018-09-30 10:56:38,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants.
[2018-09-30 10:56:38,966 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:38,967 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 50 states.
[2018-09-30 10:56:41,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:41,259 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions.
[2018-09-30 10:56:41,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states.
[2018-09-30 10:56:41,259 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 50
[2018-09-30 10:56:41,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:41,259 INFO L225 Difference]: With dead ends: 80
[2018-09-30 10:56:41,259 INFO L226 Difference]: Without dead ends: 53
[2018-09-30 10:56:41,260 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:41,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states.
[2018-09-30 10:56:41,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53.
[2018-09-30 10:56:41,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states.
[2018-09-30 10:56:41,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions.
[2018-09-30 10:56:41,267 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 50
[2018-09-30 10:56:41,268 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:41,268 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions.
[2018-09-30 10:56:41,268 INFO L481 AbstractCegarLoop]: Interpolant automaton has 50 states.
[2018-09-30 10:56:41,268 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions.
[2018-09-30 10:56:41,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53
[2018-09-30 10:56:41,268 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:41,269 INFO L375 BasicCegarLoop]: trace histogram [13, 12, 12, 11, 1, 1, 1, 1]
[2018-09-30 10:56:41,269 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:41,269 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:41,269 INFO L82 PathProgramCache]: Analyzing trace with hash -473664255, now seen corresponding path program 22 times
[2018-09-30 10:56:41,269 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:41,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:41,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:41,270 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:41,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:41,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 156 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:41,450 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:41,450 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 10:56:41,457 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:56:41,489 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:56:41,489 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:41,492 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:41,590 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 156 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:41,610 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:41,610 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 17
[2018-09-30 10:56:41,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states
[2018-09-30 10:56:41,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants.
[2018-09-30 10:56:41,611 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:41,611 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 18 states.
[2018-09-30 10:56:42,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:42,538 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions.
[2018-09-30 10:56:42,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states.
[2018-09-30 10:56:42,539 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 52
[2018-09-30 10:56:42,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:42,539 INFO L225 Difference]: With dead ends: 61
[2018-09-30 10:56:42,539 INFO L226 Difference]: Without dead ends: 59
[2018-09-30 10:56:42,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states.
[2018-09-30 10:56:42,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 55.
[2018-09-30 10:56:42,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states.
[2018-09-30 10:56:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions.
[2018-09-30 10:56:42,548 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 52
[2018-09-30 10:56:42,548 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:42,548 INFO L480 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions.
[2018-09-30 10:56:42,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states.
[2018-09-30 10:56:42,548 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions.
[2018-09-30 10:56:42,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55
[2018-09-30 10:56:42,549 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:42,549 INFO L375 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 1, 1, 1, 1]
[2018-09-30 10:56:42,549 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:42,549 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:42,549 INFO L82 PathProgramCache]: Analyzing trace with hash 75236667, now seen corresponding path program 23 times
[2018-09-30 10:56:42,550 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:42,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:42,550 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:42,550 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:42,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:43,004 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:43,004 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:56:43,013 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:56:43,050 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 13 check-sat command(s)
[2018-09-30 10:56:43,050 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:43,053 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:43,839 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 156 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:43,860 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:43,860 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 53
[2018-09-30 10:56:43,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 54 states
[2018-09-30 10:56:43,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants.
[2018-09-30 10:56:43,861 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:43,861 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 54 states.
[2018-09-30 10:56:46,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:46,647 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions.
[2018-09-30 10:56:46,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states.
[2018-09-30 10:56:46,647 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 54
[2018-09-30 10:56:46,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:46,647 INFO L225 Difference]: With dead ends: 86
[2018-09-30 10:56:46,648 INFO L226 Difference]: Without dead ends: 57
[2018-09-30 10:56:46,648 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:46,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states.
[2018-09-30 10:56:46,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57.
[2018-09-30 10:56:46,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states.
[2018-09-30 10:56:46,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions.
[2018-09-30 10:56:46,654 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 54
[2018-09-30 10:56:46,654 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:46,654 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions.
[2018-09-30 10:56:46,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 54 states.
[2018-09-30 10:56:46,654 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions.
[2018-09-30 10:56:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57
[2018-09-30 10:56:46,655 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:46,655 INFO L375 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 1, 1, 1, 1]
[2018-09-30 10:56:46,655 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:46,655 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:46,655 INFO L82 PathProgramCache]: Analyzing trace with hash 608196725, now seen corresponding path program 24 times
[2018-09-30 10:56:46,655 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:46,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:46,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:46,656 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:46,656 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:47,142 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 182 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:47,142 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:47,142 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:56:47,150 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:56:47,192 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 14 check-sat command(s)
[2018-09-30 10:56:47,192 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:47,194 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 338 backedges. 182 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:47,308 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:47,308 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16] total 18
[2018-09-30 10:56:47,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states
[2018-09-30 10:56:47,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants.
[2018-09-30 10:56:47,309 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:47,309 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 19 states.
[2018-09-30 10:56:47,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:47,872 INFO L93 Difference]: Finished difference Result 65 states and 66 transitions.
[2018-09-30 10:56:47,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states.
[2018-09-30 10:56:47,872 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 56
[2018-09-30 10:56:47,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:47,873 INFO L225 Difference]: With dead ends: 65
[2018-09-30 10:56:47,873 INFO L226 Difference]: Without dead ends: 63
[2018-09-30 10:56:47,873 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:47,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states.
[2018-09-30 10:56:47,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 59.
[2018-09-30 10:56:47,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states.
[2018-09-30 10:56:47,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions.
[2018-09-30 10:56:47,879 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 56
[2018-09-30 10:56:47,879 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:47,879 INFO L480 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions.
[2018-09-30 10:56:47,879 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states.
[2018-09-30 10:56:47,880 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions.
[2018-09-30 10:56:47,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59
[2018-09-30 10:56:47,880 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:47,880 INFO L375 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 1, 1, 1, 1]
[2018-09-30 10:56:47,880 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:47,880 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:47,880 INFO L82 PathProgramCache]: Analyzing trace with hash 361552815, now seen corresponding path program 25 times
[2018-09-30 10:56:47,881 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:47,881 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:47,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:47,881 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:47,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 182 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:48,296 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:48,297 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 10:56:48,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:56:48,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:48,340 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:48,858 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 182 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:48,878 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:48,878 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 57
[2018-09-30 10:56:48,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 58 states
[2018-09-30 10:56:48,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants.
[2018-09-30 10:56:48,879 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:48,879 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 58 states.
[2018-09-30 10:56:51,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:51,707 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions.
[2018-09-30 10:56:51,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states.
[2018-09-30 10:56:51,708 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 58
[2018-09-30 10:56:51,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:51,708 INFO L225 Difference]: With dead ends: 92
[2018-09-30 10:56:51,708 INFO L226 Difference]: Without dead ends: 61
[2018-09-30 10:56:51,709 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:51,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states.
[2018-09-30 10:56:51,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61.
[2018-09-30 10:56:51,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states.
[2018-09-30 10:56:51,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions.
[2018-09-30 10:56:51,715 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 58
[2018-09-30 10:56:51,715 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:51,715 INFO L480 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions.
[2018-09-30 10:56:51,715 INFO L481 AbstractCegarLoop]: Interpolant automaton has 58 states.
[2018-09-30 10:56:51,715 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions.
[2018-09-30 10:56:51,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61
[2018-09-30 10:56:51,716 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:51,716 INFO L375 BasicCegarLoop]: trace histogram [15, 14, 14, 13, 1, 1, 1, 1]
[2018-09-30 10:56:51,716 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:51,716 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:51,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1210122729, now seen corresponding path program 26 times
[2018-09-30 10:56:51,717 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:51,717 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:51,717 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:51,718 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:56:51,718 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:52,541 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 210 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:52,542 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:52,542 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 10:56:52,551 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:56:52,591 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:56:52,591 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:52,593 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 392 backedges. 210 proven. 182 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:52,757 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:52,758 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 19
[2018-09-30 10:56:52,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states
[2018-09-30 10:56:52,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants.
[2018-09-30 10:56:52,758 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:52,758 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 20 states.
[2018-09-30 10:56:53,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:53,390 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions.
[2018-09-30 10:56:53,390 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states.
[2018-09-30 10:56:53,390 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 60
[2018-09-30 10:56:53,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:53,391 INFO L225 Difference]: With dead ends: 69
[2018-09-30 10:56:53,391 INFO L226 Difference]: Without dead ends: 67
[2018-09-30 10:56:53,391 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:53,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states.
[2018-09-30 10:56:53,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63.
[2018-09-30 10:56:53,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states.
[2018-09-30 10:56:53,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions.
[2018-09-30 10:56:53,398 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 60
[2018-09-30 10:56:53,398 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:53,398 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions.
[2018-09-30 10:56:53,398 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states.
[2018-09-30 10:56:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions.
[2018-09-30 10:56:53,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63
[2018-09-30 10:56:53,399 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:53,399 INFO L375 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 1, 1, 1, 1]
[2018-09-30 10:56:53,399 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:53,400 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:53,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1008142301, now seen corresponding path program 27 times
[2018-09-30 10:56:53,400 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:53,400 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:53,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:53,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:53,401 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:53,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 210 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:54,063 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:54,063 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:56:54,073 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:56:54,115 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s)
[2018-09-30 10:56:54,115 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:54,118 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:55,040 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 210 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:55,060 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:55,060 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 61
[2018-09-30 10:56:55,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 62 states
[2018-09-30 10:56:55,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants.
[2018-09-30 10:56:55,061 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:55,061 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 62 states.
[2018-09-30 10:56:58,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:58,640 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions.
[2018-09-30 10:56:58,640 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states.
[2018-09-30 10:56:58,640 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 62
[2018-09-30 10:56:58,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:58,641 INFO L225 Difference]: With dead ends: 98
[2018-09-30 10:56:58,641 INFO L226 Difference]: Without dead ends: 65
[2018-09-30 10:56:58,641 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:58,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states.
[2018-09-30 10:56:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65.
[2018-09-30 10:56:58,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states.
[2018-09-30 10:56:58,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions.
[2018-09-30 10:56:58,650 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 62
[2018-09-30 10:56:58,650 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:58,650 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions.
[2018-09-30 10:56:58,650 INFO L481 AbstractCegarLoop]: Interpolant automaton has 62 states.
[2018-09-30 10:56:58,650 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions.
[2018-09-30 10:56:58,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65
[2018-09-30 10:56:58,651 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:58,651 INFO L375 BasicCegarLoop]: trace histogram [16, 15, 15, 14, 1, 1, 1, 1]
[2018-09-30 10:56:58,651 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:58,651 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:58,651 INFO L82 PathProgramCache]: Analyzing trace with hash -1490325155, now seen corresponding path program 28 times
[2018-09-30 10:56:58,651 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:58,651 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:58,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:58,652 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:58,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:58,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:56:58,857 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 240 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:58,858 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:56:58,858 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 10:56:58,866 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:56:58,905 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:56:58,905 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:56:58,907 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:56:59,108 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 240 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:56:59,127 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:56:59,128 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 20
[2018-09-30 10:56:59,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states
[2018-09-30 10:56:59,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants.
[2018-09-30 10:56:59,128 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:56:59,128 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 21 states.
[2018-09-30 10:56:59,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:56:59,819 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions.
[2018-09-30 10:56:59,819 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states.
[2018-09-30 10:56:59,819 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 64
[2018-09-30 10:56:59,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:56:59,820 INFO L225 Difference]: With dead ends: 73
[2018-09-30 10:56:59,820 INFO L226 Difference]: Without dead ends: 71
[2018-09-30 10:56:59,820 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:56:59,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states.
[2018-09-30 10:56:59,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67.
[2018-09-30 10:56:59,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states.
[2018-09-30 10:56:59,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions.
[2018-09-30 10:56:59,829 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 64
[2018-09-30 10:56:59,829 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:56:59,830 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions.
[2018-09-30 10:56:59,830 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states.
[2018-09-30 10:56:59,830 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions.
[2018-09-30 10:56:59,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67
[2018-09-30 10:56:59,830 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:56:59,830 INFO L375 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 1, 1, 1, 1]
[2018-09-30 10:56:59,830 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:56:59,830 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:56:59,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1978312041, now seen corresponding path program 29 times
[2018-09-30 10:56:59,831 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:56:59,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:56:59,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:59,831 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:56:59,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:56:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 240 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:00,878 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:00,878 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 10:57:00,885 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:57:00,933 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 16 check-sat command(s)
[2018-09-30 10:57:00,933 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:57:00,936 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 240 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:01,579 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:01,579 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65
[2018-09-30 10:57:01,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 66 states
[2018-09-30 10:57:01,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants.
[2018-09-30 10:57:01,580 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:01,580 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 66 states.
[2018-09-30 10:57:05,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:05,163 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions.
[2018-09-30 10:57:05,163 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states.
[2018-09-30 10:57:05,163 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 66
[2018-09-30 10:57:05,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:05,163 INFO L225 Difference]: With dead ends: 104
[2018-09-30 10:57:05,163 INFO L226 Difference]: Without dead ends: 69
[2018-09-30 10:57:05,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:05,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states.
[2018-09-30 10:57:05,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69.
[2018-09-30 10:57:05,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states.
[2018-09-30 10:57:05,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions.
[2018-09-30 10:57:05,171 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 66
[2018-09-30 10:57:05,171 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:05,171 INFO L480 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions.
[2018-09-30 10:57:05,171 INFO L481 AbstractCegarLoop]: Interpolant automaton has 66 states.
[2018-09-30 10:57:05,172 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions.
[2018-09-30 10:57:05,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69
[2018-09-30 10:57:05,172 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:05,172 INFO L375 BasicCegarLoop]: trace histogram [17, 16, 16, 15, 1, 1, 1, 1]
[2018-09-30 10:57:05,172 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:05,173 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:05,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1465604399, now seen corresponding path program 30 times
[2018-09-30 10:57:05,173 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:05,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:05,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:05,174 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:57:05,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:05,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:05,806 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 272 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:05,806 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:05,806 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:57:05,813 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:57:05,858 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 17 check-sat command(s)
[2018-09-30 10:57:05,858 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:57:05,861 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:05,978 INFO L134 CoverageAnalysis]: Checked inductivity of 512 backedges. 272 proven. 240 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:05,997 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:05,997 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 21
[2018-09-30 10:57:05,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states
[2018-09-30 10:57:05,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants.
[2018-09-30 10:57:05,998 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:05,998 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 22 states.
[2018-09-30 10:57:06,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:06,934 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions.
[2018-09-30 10:57:06,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states.
[2018-09-30 10:57:06,935 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 68
[2018-09-30 10:57:06,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:06,936 INFO L225 Difference]: With dead ends: 77
[2018-09-30 10:57:06,936 INFO L226 Difference]: Without dead ends: 75
[2018-09-30 10:57:06,936 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:06,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states.
[2018-09-30 10:57:06,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71.
[2018-09-30 10:57:06,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states.
[2018-09-30 10:57:06,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions.
[2018-09-30 10:57:06,949 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 68
[2018-09-30 10:57:06,949 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:06,949 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions.
[2018-09-30 10:57:06,949 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states.
[2018-09-30 10:57:06,949 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions.
[2018-09-30 10:57:06,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71
[2018-09-30 10:57:06,950 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:06,950 INFO L375 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 1, 1, 1, 1]
[2018-09-30 10:57:06,950 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:06,950 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:06,951 INFO L82 PathProgramCache]: Analyzing trace with hash 303497995, now seen corresponding path program 31 times
[2018-09-30 10:57:06,951 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:06,951 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:06,951 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:06,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:57:06,952 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:07,300 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 272 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:07,301 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:07,301 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 10:57:07,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:57:07,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:07,353 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:08,114 INFO L134 CoverageAnalysis]: Checked inductivity of 544 backedges. 272 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:08,134 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:08,134 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 69
[2018-09-30 10:57:08,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 70 states
[2018-09-30 10:57:08,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants.
[2018-09-30 10:57:08,135 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:08,135 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 70 states.
[2018-09-30 10:57:12,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:12,846 INFO L93 Difference]: Finished difference Result 110 states and 112 transitions.
[2018-09-30 10:57:12,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states.
[2018-09-30 10:57:12,847 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 70
[2018-09-30 10:57:12,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:12,847 INFO L225 Difference]: With dead ends: 110
[2018-09-30 10:57:12,847 INFO L226 Difference]: Without dead ends: 73
[2018-09-30 10:57:12,847 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:12,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states.
[2018-09-30 10:57:12,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73.
[2018-09-30 10:57:12,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states.
[2018-09-30 10:57:12,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions.
[2018-09-30 10:57:12,858 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 70
[2018-09-30 10:57:12,858 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:12,858 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions.
[2018-09-30 10:57:12,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 70 states.
[2018-09-30 10:57:12,858 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions.
[2018-09-30 10:57:12,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73
[2018-09-30 10:57:12,858 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:12,858 INFO L375 BasicCegarLoop]: trace histogram [18, 17, 17, 16, 1, 1, 1, 1]
[2018-09-30 10:57:12,859 INFO L423 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:12,859 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:12,859 INFO L82 PathProgramCache]: Analyzing trace with hash -2091802043, now seen corresponding path program 32 times
[2018-09-30 10:57:12,859 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:12,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:12,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:12,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:57:12,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:13,260 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 306 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:13,260 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:13,260 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 10:57:13,267 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:57:13,312 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:57:13,312 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:57:13,314 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:13,430 INFO L134 CoverageAnalysis]: Checked inductivity of 578 backedges. 306 proven. 272 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:13,449 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:13,449 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 20] total 22
[2018-09-30 10:57:13,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states
[2018-09-30 10:57:13,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants.
[2018-09-30 10:57:13,450 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:13,450 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 23 states.
[2018-09-30 10:57:14,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:14,287 INFO L93 Difference]: Finished difference Result 81 states and 82 transitions.
[2018-09-30 10:57:14,288 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states.
[2018-09-30 10:57:14,288 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 72
[2018-09-30 10:57:14,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:14,288 INFO L225 Difference]: With dead ends: 81
[2018-09-30 10:57:14,288 INFO L226 Difference]: Without dead ends: 79
[2018-09-30 10:57:14,289 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:14,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states.
[2018-09-30 10:57:14,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75.
[2018-09-30 10:57:14,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states.
[2018-09-30 10:57:14,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions.
[2018-09-30 10:57:14,298 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 72
[2018-09-30 10:57:14,298 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:14,298 INFO L480 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions.
[2018-09-30 10:57:14,298 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states.
[2018-09-30 10:57:14,298 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions.
[2018-09-30 10:57:14,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75
[2018-09-30 10:57:14,298 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:14,298 INFO L375 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 1, 1, 1, 1]
[2018-09-30 10:57:14,299 INFO L423 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:14,299 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:14,299 INFO L82 PathProgramCache]: Analyzing trace with hash -177016449, now seen corresponding path program 33 times
[2018-09-30 10:57:14,299 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:14,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:14,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:14,299 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:57:14,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:14,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:14,784 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 306 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:14,784 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:14,784 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 10:57:14,791 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:57:14,851 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 18 check-sat command(s)
[2018-09-30 10:57:14,851 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:57:14,853 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:15,559 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 306 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:15,579 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:15,580 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 73
[2018-09-30 10:57:15,580 INFO L459 AbstractCegarLoop]: Interpolant automaton has 74 states
[2018-09-30 10:57:15,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants.
[2018-09-30 10:57:15,580 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:15,580 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 74 states.
[2018-09-30 10:57:19,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:19,495 INFO L93 Difference]: Finished difference Result 116 states and 118 transitions.
[2018-09-30 10:57:19,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states.
[2018-09-30 10:57:19,496 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 74
[2018-09-30 10:57:19,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:19,496 INFO L225 Difference]: With dead ends: 116
[2018-09-30 10:57:19,496 INFO L226 Difference]: Without dead ends: 77
[2018-09-30 10:57:19,496 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:19,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states.
[2018-09-30 10:57:19,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77.
[2018-09-30 10:57:19,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states.
[2018-09-30 10:57:19,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions.
[2018-09-30 10:57:19,508 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 74
[2018-09-30 10:57:19,508 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:19,508 INFO L480 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions.
[2018-09-30 10:57:19,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 74 states.
[2018-09-30 10:57:19,508 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions.
[2018-09-30 10:57:19,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77
[2018-09-30 10:57:19,508 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:19,509 INFO L375 BasicCegarLoop]: trace histogram [19, 18, 18, 17, 1, 1, 1, 1]
[2018-09-30 10:57:19,509 INFO L423 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:19,509 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:19,509 INFO L82 PathProgramCache]: Analyzing trace with hash -42507335, now seen corresponding path program 34 times
[2018-09-30 10:57:19,509 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:19,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:19,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:19,510 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:57:19,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:19,750 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 342 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:19,750 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:19,750 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:57:19,760 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:57:19,809 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:57:19,809 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:57:19,812 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 648 backedges. 342 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:19,958 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:19,958 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 23
[2018-09-30 10:57:19,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states
[2018-09-30 10:57:19,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants.
[2018-09-30 10:57:19,958 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:19,959 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 24 states.
[2018-09-30 10:57:20,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:20,893 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions.
[2018-09-30 10:57:20,894 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states.
[2018-09-30 10:57:20,894 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 76
[2018-09-30 10:57:20,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:20,894 INFO L225 Difference]: With dead ends: 85
[2018-09-30 10:57:20,894 INFO L226 Difference]: Without dead ends: 83
[2018-09-30 10:57:20,895 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:20,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states.
[2018-09-30 10:57:20,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79.
[2018-09-30 10:57:20,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states.
[2018-09-30 10:57:20,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions.
[2018-09-30 10:57:20,905 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 76
[2018-09-30 10:57:20,905 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:20,905 INFO L480 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions.
[2018-09-30 10:57:20,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states.
[2018-09-30 10:57:20,905 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions.
[2018-09-30 10:57:20,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79
[2018-09-30 10:57:20,906 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:20,906 INFO L375 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 1, 1, 1, 1]
[2018-09-30 10:57:20,906 INFO L423 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:20,906 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:20,906 INFO L82 PathProgramCache]: Analyzing trace with hash 2100176371, now seen corresponding path program 35 times
[2018-09-30 10:57:20,906 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:20,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:20,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:20,907 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:57:20,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:21,348 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 342 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:21,348 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:21,348 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 10:57:21,357 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:57:21,416 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s)
[2018-09-30 10:57:21,416 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:57:21,419 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:22,264 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 342 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:22,284 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:22,284 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 39] total 77
[2018-09-30 10:57:22,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 78 states
[2018-09-30 10:57:22,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants.
[2018-09-30 10:57:22,285 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:22,285 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 78 states.
[2018-09-30 10:57:26,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:26,816 INFO L93 Difference]: Finished difference Result 122 states and 124 transitions.
[2018-09-30 10:57:26,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states.
[2018-09-30 10:57:26,816 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 78
[2018-09-30 10:57:26,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:26,817 INFO L225 Difference]: With dead ends: 122
[2018-09-30 10:57:26,817 INFO L226 Difference]: Without dead ends: 81
[2018-09-30 10:57:26,817 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:26,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states.
[2018-09-30 10:57:26,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81.
[2018-09-30 10:57:26,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states.
[2018-09-30 10:57:26,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions.
[2018-09-30 10:57:26,827 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 78
[2018-09-30 10:57:26,827 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:26,827 INFO L480 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions.
[2018-09-30 10:57:26,827 INFO L481 AbstractCegarLoop]: Interpolant automaton has 78 states.
[2018-09-30 10:57:26,827 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions.
[2018-09-30 10:57:26,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81
[2018-09-30 10:57:26,828 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:26,828 INFO L375 BasicCegarLoop]: trace histogram [20, 19, 19, 18, 1, 1, 1, 1]
[2018-09-30 10:57:26,828 INFO L423 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:26,828 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:26,828 INFO L82 PathProgramCache]: Analyzing trace with hash 752544557, now seen corresponding path program 36 times
[2018-09-30 10:57:26,829 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:26,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:26,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:26,829 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:57:26,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:27,086 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 380 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:27,087 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:27,087 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:57:27,094 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:57:27,149 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s)
[2018-09-30 10:57:27,149 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:57:27,151 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 722 backedges. 380 proven. 342 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:27,309 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:27,309 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 22] total 24
[2018-09-30 10:57:27,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states
[2018-09-30 10:57:27,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants.
[2018-09-30 10:57:27,310 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:27,310 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 25 states.
[2018-09-30 10:57:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:28,417 INFO L93 Difference]: Finished difference Result 89 states and 90 transitions.
[2018-09-30 10:57:28,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states.
[2018-09-30 10:57:28,417 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 80
[2018-09-30 10:57:28,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:28,418 INFO L225 Difference]: With dead ends: 89
[2018-09-30 10:57:28,418 INFO L226 Difference]: Without dead ends: 87
[2018-09-30 10:57:28,418 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:28,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states.
[2018-09-30 10:57:28,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 83.
[2018-09-30 10:57:28,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states.
[2018-09-30 10:57:28,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions.
[2018-09-30 10:57:28,433 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 80
[2018-09-30 10:57:28,433 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:28,433 INFO L480 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions.
[2018-09-30 10:57:28,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states.
[2018-09-30 10:57:28,433 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions.
[2018-09-30 10:57:28,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83
[2018-09-30 10:57:28,434 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:28,434 INFO L375 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 1, 1, 1, 1]
[2018-09-30 10:57:28,434 INFO L423 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:28,434 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:28,434 INFO L82 PathProgramCache]: Analyzing trace with hash 1640865895, now seen corresponding path program 37 times
[2018-09-30 10:57:28,434 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:28,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:28,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:28,435 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:57:28,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:28,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 380 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:28,947 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:28,947 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 10:57:28,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:57:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:29,007 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:29,821 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 380 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:29,842 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:29,842 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 41] total 81
[2018-09-30 10:57:29,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 82 states
[2018-09-30 10:57:29,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 82 interpolants.
[2018-09-30 10:57:29,844 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:29,844 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 82 states.
[2018-09-30 10:57:34,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:34,501 INFO L93 Difference]: Finished difference Result 128 states and 130 transitions.
[2018-09-30 10:57:34,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states.
[2018-09-30 10:57:34,501 INFO L78 Accepts]: Start accepts. Automaton has 82 states. Word has length 82
[2018-09-30 10:57:34,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:34,502 INFO L225 Difference]: With dead ends: 128
[2018-09-30 10:57:34,502 INFO L226 Difference]: Without dead ends: 85
[2018-09-30 10:57:34,502 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:34,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states.
[2018-09-30 10:57:34,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85.
[2018-09-30 10:57:34,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states.
[2018-09-30 10:57:34,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions.
[2018-09-30 10:57:34,514 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 82
[2018-09-30 10:57:34,514 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:34,514 INFO L480 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions.
[2018-09-30 10:57:34,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 82 states.
[2018-09-30 10:57:34,514 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions.
[2018-09-30 10:57:34,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85
[2018-09-30 10:57:34,514 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:34,515 INFO L375 BasicCegarLoop]: trace histogram [21, 20, 20, 19, 1, 1, 1, 1]
[2018-09-30 10:57:34,515 INFO L423 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:34,515 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:34,515 INFO L82 PathProgramCache]: Analyzing trace with hash 918632609, now seen corresponding path program 38 times
[2018-09-30 10:57:34,515 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:34,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:34,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:34,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:57:34,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:34,828 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 420 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:34,829 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:34,829 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:57:34,837 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:57:34,891 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:57:34,891 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:57:34,894 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 800 backedges. 420 proven. 380 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:35,059 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:35,060 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 25
[2018-09-30 10:57:35,060 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states
[2018-09-30 10:57:35,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants.
[2018-09-30 10:57:35,060 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:35,060 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 26 states.
[2018-09-30 10:57:36,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:36,017 INFO L93 Difference]: Finished difference Result 93 states and 94 transitions.
[2018-09-30 10:57:36,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states.
[2018-09-30 10:57:36,018 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 84
[2018-09-30 10:57:36,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:36,018 INFO L225 Difference]: With dead ends: 93
[2018-09-30 10:57:36,019 INFO L226 Difference]: Without dead ends: 91
[2018-09-30 10:57:36,019 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:36,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states.
[2018-09-30 10:57:36,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 87.
[2018-09-30 10:57:36,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states.
[2018-09-30 10:57:36,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions.
[2018-09-30 10:57:36,031 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 84
[2018-09-30 10:57:36,031 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:36,031 INFO L480 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions.
[2018-09-30 10:57:36,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states.
[2018-09-30 10:57:36,031 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions.
[2018-09-30 10:57:36,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87
[2018-09-30 10:57:36,032 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:36,032 INFO L375 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 1, 1, 1, 1]
[2018-09-30 10:57:36,032 INFO L423 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:36,032 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:36,032 INFO L82 PathProgramCache]: Analyzing trace with hash -1957273381, now seen corresponding path program 39 times
[2018-09-30 10:57:36,032 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:36,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:36,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:36,033 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:57:36,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:36,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:36,680 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 420 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:36,681 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:36,681 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:57:36,689 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:57:36,770 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 21 check-sat command(s)
[2018-09-30 10:57:36,771 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:57:36,773 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 840 backedges. 420 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:37,616 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:37,616 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [43, 43] total 85
[2018-09-30 10:57:37,617 INFO L459 AbstractCegarLoop]: Interpolant automaton has 86 states
[2018-09-30 10:57:37,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 86 interpolants.
[2018-09-30 10:57:37,617 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:37,617 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 86 states.
[2018-09-30 10:57:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:43,114 INFO L93 Difference]: Finished difference Result 134 states and 136 transitions.
[2018-09-30 10:57:43,114 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states.
[2018-09-30 10:57:43,114 INFO L78 Accepts]: Start accepts. Automaton has 86 states. Word has length 86
[2018-09-30 10:57:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:43,115 INFO L225 Difference]: With dead ends: 134
[2018-09-30 10:57:43,115 INFO L226 Difference]: Without dead ends: 89
[2018-09-30 10:57:43,115 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 105 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:43,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states.
[2018-09-30 10:57:43,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89.
[2018-09-30 10:57:43,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states.
[2018-09-30 10:57:43,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions.
[2018-09-30 10:57:43,126 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 86
[2018-09-30 10:57:43,126 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:43,127 INFO L480 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions.
[2018-09-30 10:57:43,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 86 states.
[2018-09-30 10:57:43,127 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions.
[2018-09-30 10:57:43,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89
[2018-09-30 10:57:43,127 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:43,127 INFO L375 BasicCegarLoop]: trace histogram [22, 21, 21, 20, 1, 1, 1, 1]
[2018-09-30 10:57:43,127 INFO L423 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:43,127 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:43,128 INFO L82 PathProgramCache]: Analyzing trace with hash 267340821, now seen corresponding path program 40 times
[2018-09-30 10:57:43,128 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:43,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:43,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:43,128 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:57:43,128 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 462 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:43,518 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:43,518 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 10:57:43,526 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:57:43,583 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:57:43,584 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:57:43,586 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 882 backedges. 462 proven. 420 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:43,834 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:43,834 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 26
[2018-09-30 10:57:43,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states
[2018-09-30 10:57:43,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants.
[2018-09-30 10:57:43,835 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:43,835 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 27 states.
[2018-09-30 10:57:44,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:44,788 INFO L93 Difference]: Finished difference Result 97 states and 98 transitions.
[2018-09-30 10:57:44,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states.
[2018-09-30 10:57:44,788 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 88
[2018-09-30 10:57:44,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:44,789 INFO L225 Difference]: With dead ends: 97
[2018-09-30 10:57:44,789 INFO L226 Difference]: Without dead ends: 95
[2018-09-30 10:57:44,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:44,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states.
[2018-09-30 10:57:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 91.
[2018-09-30 10:57:44,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states.
[2018-09-30 10:57:44,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions.
[2018-09-30 10:57:44,803 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 88
[2018-09-30 10:57:44,803 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:44,803 INFO L480 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions.
[2018-09-30 10:57:44,803 INFO L481 AbstractCegarLoop]: Interpolant automaton has 27 states.
[2018-09-30 10:57:44,803 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions.
[2018-09-30 10:57:44,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91
[2018-09-30 10:57:44,803 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:44,803 INFO L375 BasicCegarLoop]: trace histogram [22, 22, 21, 21, 1, 1, 1, 1]
[2018-09-30 10:57:44,804 INFO L423 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:44,804 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:44,804 INFO L82 PathProgramCache]: Analyzing trace with hash -783456433, now seen corresponding path program 41 times
[2018-09-30 10:57:44,804 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:44,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:44,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:44,805 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:57:44,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 462 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:45,378 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:45,379 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:57:45,386 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:57:45,456 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 22 check-sat command(s)
[2018-09-30 10:57:45,457 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:57:45,461 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:47,505 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 462 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:47,525 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:47,525 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [45, 45] total 89
[2018-09-30 10:57:47,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 90 states
[2018-09-30 10:57:47,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 90 interpolants.
[2018-09-30 10:57:47,526 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:47,527 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 90 states.
[2018-09-30 10:57:53,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:53,539 INFO L93 Difference]: Finished difference Result 140 states and 142 transitions.
[2018-09-30 10:57:53,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states.
[2018-09-30 10:57:53,539 INFO L78 Accepts]: Start accepts. Automaton has 90 states. Word has length 90
[2018-09-30 10:57:53,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:53,540 INFO L225 Difference]: With dead ends: 140
[2018-09-30 10:57:53,540 INFO L226 Difference]: Without dead ends: 93
[2018-09-30 10:57:53,540 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:53,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states.
[2018-09-30 10:57:53,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93.
[2018-09-30 10:57:53,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states.
[2018-09-30 10:57:53,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions.
[2018-09-30 10:57:53,555 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 90
[2018-09-30 10:57:53,555 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:53,555 INFO L480 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions.
[2018-09-30 10:57:53,555 INFO L481 AbstractCegarLoop]: Interpolant automaton has 90 states.
[2018-09-30 10:57:53,555 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions.
[2018-09-30 10:57:53,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93
[2018-09-30 10:57:53,556 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:53,556 INFO L375 BasicCegarLoop]: trace histogram [23, 22, 22, 21, 1, 1, 1, 1]
[2018-09-30 10:57:53,556 INFO L423 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:53,556 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:53,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1017783689, now seen corresponding path program 42 times
[2018-09-30 10:57:53,556 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:53,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:53,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:53,557 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:57:53,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:54,090 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 506 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:54,090 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:54,090 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 10:57:54,098 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:57:54,166 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 23 check-sat command(s)
[2018-09-30 10:57:54,166 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:57:54,170 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:54,377 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 506 proven. 462 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:54,398 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:54,399 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 27
[2018-09-30 10:57:54,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states
[2018-09-30 10:57:54,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants.
[2018-09-30 10:57:54,399 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:54,400 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 28 states.
[2018-09-30 10:57:55,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:57:55,387 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions.
[2018-09-30 10:57:55,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states.
[2018-09-30 10:57:55,388 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 92
[2018-09-30 10:57:55,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:57:55,388 INFO L225 Difference]: With dead ends: 101
[2018-09-30 10:57:55,388 INFO L226 Difference]: Without dead ends: 99
[2018-09-30 10:57:55,389 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:57:55,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states.
[2018-09-30 10:57:55,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 95.
[2018-09-30 10:57:55,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states.
[2018-09-30 10:57:55,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions.
[2018-09-30 10:57:55,402 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 92
[2018-09-30 10:57:55,402 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:57:55,403 INFO L480 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions.
[2018-09-30 10:57:55,403 INFO L481 AbstractCegarLoop]: Interpolant automaton has 28 states.
[2018-09-30 10:57:55,403 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions.
[2018-09-30 10:57:55,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95
[2018-09-30 10:57:55,403 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:57:55,403 INFO L375 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 1, 1, 1, 1]
[2018-09-30 10:57:55,404 INFO L423 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:57:55,404 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:57:55,404 INFO L82 PathProgramCache]: Analyzing trace with hash -1162366013, now seen corresponding path program 43 times
[2018-09-30 10:57:55,404 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:57:55,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:57:55,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:55,405 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:57:55,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:57:55,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:55,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 506 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:55,940 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:57:55,940 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 10:57:55,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:57:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:57:56,009 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:57:56,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1012 backedges. 506 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:57:57,006 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:57:57,006 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47] total 93
[2018-09-30 10:57:57,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 94 states
[2018-09-30 10:57:57,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants.
[2018-09-30 10:57:57,007 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:57:57,007 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 94 states.
[2018-09-30 10:58:03,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:03,653 INFO L93 Difference]: Finished difference Result 146 states and 148 transitions.
[2018-09-30 10:58:03,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states.
[2018-09-30 10:58:03,653 INFO L78 Accepts]: Start accepts. Automaton has 94 states. Word has length 94
[2018-09-30 10:58:03,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:03,654 INFO L225 Difference]: With dead ends: 146
[2018-09-30 10:58:03,654 INFO L226 Difference]: Without dead ends: 97
[2018-09-30 10:58:03,655 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:03,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states.
[2018-09-30 10:58:03,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97.
[2018-09-30 10:58:03,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states.
[2018-09-30 10:58:03,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions.
[2018-09-30 10:58:03,668 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 94
[2018-09-30 10:58:03,668 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:03,668 INFO L480 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions.
[2018-09-30 10:58:03,669 INFO L481 AbstractCegarLoop]: Interpolant automaton has 94 states.
[2018-09-30 10:58:03,669 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions.
[2018-09-30 10:58:03,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97
[2018-09-30 10:58:03,669 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:03,669 INFO L375 BasicCegarLoop]: trace histogram [24, 23, 23, 22, 1, 1, 1, 1]
[2018-09-30 10:58:03,670 INFO L423 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:03,670 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:03,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1867070211, now seen corresponding path program 44 times
[2018-09-30 10:58:03,670 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:03,670 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:03,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:03,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:03,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 552 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:04,138 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:04,138 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:58:04,146 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:58:04,202 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:58:04,202 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:04,205 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:04,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1058 backedges. 552 proven. 506 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:04,409 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:04,409 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 28
[2018-09-30 10:58:04,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states
[2018-09-30 10:58:04,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants.
[2018-09-30 10:58:04,409 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:04,410 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 29 states.
[2018-09-30 10:58:05,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:05,479 INFO L93 Difference]: Finished difference Result 105 states and 106 transitions.
[2018-09-30 10:58:05,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states.
[2018-09-30 10:58:05,479 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 96
[2018-09-30 10:58:05,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:05,480 INFO L225 Difference]: With dead ends: 105
[2018-09-30 10:58:05,480 INFO L226 Difference]: Without dead ends: 103
[2018-09-30 10:58:05,480 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:05,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states.
[2018-09-30 10:58:05,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99.
[2018-09-30 10:58:05,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states.
[2018-09-30 10:58:05,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 100 transitions.
[2018-09-30 10:58:05,494 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 100 transitions. Word has length 96
[2018-09-30 10:58:05,494 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:05,494 INFO L480 AbstractCegarLoop]: Abstraction has 99 states and 100 transitions.
[2018-09-30 10:58:05,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 29 states.
[2018-09-30 10:58:05,494 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 100 transitions.
[2018-09-30 10:58:05,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99
[2018-09-30 10:58:05,494 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:05,494 INFO L375 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 1, 1, 1, 1]
[2018-09-30 10:58:05,495 INFO L423 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:05,495 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:05,495 INFO L82 PathProgramCache]: Analyzing trace with hash 1041909303, now seen corresponding path program 45 times
[2018-09-30 10:58:05,495 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:05,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:05,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:05,496 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:05,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:06,079 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 552 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:06,080 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:06,080 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 10:58:06,088 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:58:06,164 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s)
[2018-09-30 10:58:06,164 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:06,167 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:07,193 INFO L134 CoverageAnalysis]: Checked inductivity of 1104 backedges. 552 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:07,213 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:07,213 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49] total 97
[2018-09-30 10:58:07,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 98 states
[2018-09-30 10:58:07,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants.
[2018-09-30 10:58:07,214 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:07,214 INFO L87 Difference]: Start difference. First operand 99 states and 100 transitions. Second operand 98 states.
[2018-09-30 10:58:13,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:13,788 INFO L93 Difference]: Finished difference Result 152 states and 154 transitions.
[2018-09-30 10:58:13,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states.
[2018-09-30 10:58:13,788 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 98
[2018-09-30 10:58:13,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:13,789 INFO L225 Difference]: With dead ends: 152
[2018-09-30 10:58:13,789 INFO L226 Difference]: Without dead ends: 101
[2018-09-30 10:58:13,789 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:13,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states.
[2018-09-30 10:58:13,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101.
[2018-09-30 10:58:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states.
[2018-09-30 10:58:13,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 102 transitions.
[2018-09-30 10:58:13,805 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 102 transitions. Word has length 98
[2018-09-30 10:58:13,806 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:13,806 INFO L480 AbstractCegarLoop]: Abstraction has 101 states and 102 transitions.
[2018-09-30 10:58:13,806 INFO L481 AbstractCegarLoop]: Interpolant automaton has 98 states.
[2018-09-30 10:58:13,806 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 102 transitions.
[2018-09-30 10:58:13,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101
[2018-09-30 10:58:13,806 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:13,806 INFO L375 BasicCegarLoop]: trace histogram [25, 24, 24, 23, 1, 1, 1, 1]
[2018-09-30 10:58:13,806 INFO L423 AbstractCegarLoop]: === Iteration 48 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:13,806 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:13,807 INFO L82 PathProgramCache]: Analyzing trace with hash -279303567, now seen corresponding path program 46 times
[2018-09-30 10:58:13,807 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:13,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:13,807 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:13,807 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:13,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:14,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 600 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:14,315 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:14,315 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:58:14,323 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:58:14,387 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:58:14,387 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:14,391 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:14,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1152 backedges. 600 proven. 552 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:14,631 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:14,631 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 27] total 29
[2018-09-30 10:58:14,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states
[2018-09-30 10:58:14,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants.
[2018-09-30 10:58:14,632 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:14,632 INFO L87 Difference]: Start difference. First operand 101 states and 102 transitions. Second operand 30 states.
[2018-09-30 10:58:17,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:17,572 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions.
[2018-09-30 10:58:17,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states.
[2018-09-30 10:58:17,572 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 100
[2018-09-30 10:58:17,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:17,573 INFO L225 Difference]: With dead ends: 109
[2018-09-30 10:58:17,573 INFO L226 Difference]: Without dead ends: 107
[2018-09-30 10:58:17,573 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:17,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states.
[2018-09-30 10:58:17,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103.
[2018-09-30 10:58:17,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states.
[2018-09-30 10:58:17,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 104 transitions.
[2018-09-30 10:58:17,594 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 104 transitions. Word has length 100
[2018-09-30 10:58:17,595 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:17,595 INFO L480 AbstractCegarLoop]: Abstraction has 103 states and 104 transitions.
[2018-09-30 10:58:17,595 INFO L481 AbstractCegarLoop]: Interpolant automaton has 30 states.
[2018-09-30 10:58:17,595 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 104 transitions.
[2018-09-30 10:58:17,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103
[2018-09-30 10:58:17,595 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:17,596 INFO L375 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 1, 1, 1, 1]
[2018-09-30 10:58:17,596 INFO L423 AbstractCegarLoop]: === Iteration 49 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:17,596 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:17,596 INFO L82 PathProgramCache]: Analyzing trace with hash -2122703189, now seen corresponding path program 47 times
[2018-09-30 10:58:17,596 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:17,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:17,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:17,597 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:17,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:18,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 600 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:18,803 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:18,803 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:58:18,811 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:58:18,899 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 25 check-sat command(s)
[2018-09-30 10:58:18,899 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:18,903 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1200 backedges. 600 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:20,428 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:20,428 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [51, 51] total 101
[2018-09-30 10:58:20,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 102 states
[2018-09-30 10:58:20,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 102 interpolants.
[2018-09-30 10:58:20,429 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:20,429 INFO L87 Difference]: Start difference. First operand 103 states and 104 transitions. Second operand 102 states.
[2018-09-30 10:58:30,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:30,801 INFO L93 Difference]: Finished difference Result 158 states and 160 transitions.
[2018-09-30 10:58:30,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states.
[2018-09-30 10:58:30,801 INFO L78 Accepts]: Start accepts. Automaton has 102 states. Word has length 102
[2018-09-30 10:58:30,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:30,802 INFO L225 Difference]: With dead ends: 158
[2018-09-30 10:58:30,802 INFO L226 Difference]: Without dead ends: 105
[2018-09-30 10:58:30,802 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states.
[2018-09-30 10:58:30,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 105.
[2018-09-30 10:58:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states.
[2018-09-30 10:58:30,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions.
[2018-09-30 10:58:30,825 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 102
[2018-09-30 10:58:30,826 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:30,826 INFO L480 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions.
[2018-09-30 10:58:30,826 INFO L481 AbstractCegarLoop]: Interpolant automaton has 102 states.
[2018-09-30 10:58:30,826 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions.
[2018-09-30 10:58:30,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105
[2018-09-30 10:58:30,827 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:30,827 INFO L375 BasicCegarLoop]: trace histogram [26, 25, 25, 24, 1, 1, 1, 1]
[2018-09-30 10:58:30,827 INFO L423 AbstractCegarLoop]: === Iteration 50 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:30,827 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:30,827 INFO L82 PathProgramCache]: Analyzing trace with hash 190404069, now seen corresponding path program 48 times
[2018-09-30 10:58:30,828 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:30,828 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:30,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:30,828 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:30,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:31,387 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 650 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:31,387 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:31,387 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 10:58:31,395 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:58:31,476 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 26 check-sat command(s)
[2018-09-30 10:58:31,476 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:31,479 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:31,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1250 backedges. 650 proven. 600 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:31,733 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:31,733 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 28] total 30
[2018-09-30 10:58:31,733 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states
[2018-09-30 10:58:31,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants.
[2018-09-30 10:58:31,734 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:31,734 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 31 states.
[2018-09-30 10:58:32,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:32,940 INFO L93 Difference]: Finished difference Result 113 states and 114 transitions.
[2018-09-30 10:58:32,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states.
[2018-09-30 10:58:32,940 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 104
[2018-09-30 10:58:32,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:32,941 INFO L225 Difference]: With dead ends: 113
[2018-09-30 10:58:32,941 INFO L226 Difference]: Without dead ends: 111
[2018-09-30 10:58:32,941 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:32,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states.
[2018-09-30 10:58:32,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107.
[2018-09-30 10:58:32,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states.
[2018-09-30 10:58:32,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 108 transitions.
[2018-09-30 10:58:32,960 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 108 transitions. Word has length 104
[2018-09-30 10:58:32,961 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:32,961 INFO L480 AbstractCegarLoop]: Abstraction has 107 states and 108 transitions.
[2018-09-30 10:58:32,961 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states.
[2018-09-30 10:58:32,961 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 108 transitions.
[2018-09-30 10:58:32,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107
[2018-09-30 10:58:32,962 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:32,962 INFO L375 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 1, 1, 1, 1]
[2018-09-30 10:58:32,962 INFO L423 AbstractCegarLoop]: === Iteration 51 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:32,962 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:32,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1705231073, now seen corresponding path program 49 times
[2018-09-30 10:58:32,962 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:32,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:32,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:32,963 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:32,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:34,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 650 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:34,158 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:34,158 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 10:58:34,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:34,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:34,233 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:35,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1300 backedges. 650 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:35,654 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:35,655 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [53, 53] total 105
[2018-09-30 10:58:35,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 106 states
[2018-09-30 10:58:35,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 106 interpolants.
[2018-09-30 10:58:35,656 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:35,656 INFO L87 Difference]: Start difference. First operand 107 states and 108 transitions. Second operand 106 states.
[2018-09-30 10:58:47,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:47,048 INFO L93 Difference]: Finished difference Result 164 states and 166 transitions.
[2018-09-30 10:58:47,048 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states.
[2018-09-30 10:58:47,048 INFO L78 Accepts]: Start accepts. Automaton has 106 states. Word has length 106
[2018-09-30 10:58:47,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:47,049 INFO L225 Difference]: With dead ends: 164
[2018-09-30 10:58:47,049 INFO L226 Difference]: Without dead ends: 109
[2018-09-30 10:58:47,049 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:47,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states.
[2018-09-30 10:58:47,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109.
[2018-09-30 10:58:47,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states.
[2018-09-30 10:58:47,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 110 transitions.
[2018-09-30 10:58:47,064 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 110 transitions. Word has length 106
[2018-09-30 10:58:47,064 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:47,064 INFO L480 AbstractCegarLoop]: Abstraction has 109 states and 110 transitions.
[2018-09-30 10:58:47,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 106 states.
[2018-09-30 10:58:47,065 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 110 transitions.
[2018-09-30 10:58:47,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109
[2018-09-30 10:58:47,065 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:47,065 INFO L375 BasicCegarLoop]: trace histogram [27, 26, 26, 25, 1, 1, 1, 1]
[2018-09-30 10:58:47,066 INFO L423 AbstractCegarLoop]: === Iteration 52 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:47,066 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:47,066 INFO L82 PathProgramCache]: Analyzing trace with hash 653870937, now seen corresponding path program 50 times
[2018-09-30 10:58:47,066 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:47,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:47,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:47,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:58:47,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:47,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:47,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 702 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:47,853 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:47,853 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 10:58:47,862 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:58:47,927 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:58:47,928 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:47,930 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:48,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1352 backedges. 702 proven. 650 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:48,130 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:48,131 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 31
[2018-09-30 10:58:48,131 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states
[2018-09-30 10:58:48,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants.
[2018-09-30 10:58:48,131 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:48,131 INFO L87 Difference]: Start difference. First operand 109 states and 110 transitions. Second operand 32 states.
[2018-09-30 10:58:49,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:49,314 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions.
[2018-09-30 10:58:49,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states.
[2018-09-30 10:58:49,314 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 108
[2018-09-30 10:58:49,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:49,315 INFO L225 Difference]: With dead ends: 117
[2018-09-30 10:58:49,315 INFO L226 Difference]: Without dead ends: 115
[2018-09-30 10:58:49,315 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:49,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states.
[2018-09-30 10:58:49,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 111.
[2018-09-30 10:58:49,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states.
[2018-09-30 10:58:49,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 112 transitions.
[2018-09-30 10:58:49,332 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 112 transitions. Word has length 108
[2018-09-30 10:58:49,333 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:49,333 INFO L480 AbstractCegarLoop]: Abstraction has 111 states and 112 transitions.
[2018-09-30 10:58:49,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states.
[2018-09-30 10:58:49,333 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 112 transitions.
[2018-09-30 10:58:49,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111
[2018-09-30 10:58:49,334 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:49,334 INFO L375 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 1, 1, 1, 1]
[2018-09-30 10:58:49,334 INFO L423 AbstractCegarLoop]: === Iteration 53 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:49,334 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:49,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1304797587, now seen corresponding path program 51 times
[2018-09-30 10:58:49,334 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:49,334 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:49,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:49,335 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:49,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:49,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:50,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 702 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:50,130 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:50,130 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:58:50,142 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:58:50,227 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 27 check-sat command(s)
[2018-09-30 10:58:50,228 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:50,231 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 702 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:51,833 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:51,833 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [55, 55] total 109
[2018-09-30 10:58:51,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 110 states
[2018-09-30 10:58:51,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 110 interpolants.
[2018-09-30 10:58:51,835 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:51,835 INFO L87 Difference]: Start difference. First operand 111 states and 112 transitions. Second operand 110 states.
[2018-09-30 10:58:59,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:58:59,274 INFO L93 Difference]: Finished difference Result 170 states and 172 transitions.
[2018-09-30 10:58:59,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states.
[2018-09-30 10:58:59,274 INFO L78 Accepts]: Start accepts. Automaton has 110 states. Word has length 110
[2018-09-30 10:58:59,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:58:59,275 INFO L225 Difference]: With dead ends: 170
[2018-09-30 10:58:59,275 INFO L226 Difference]: Without dead ends: 113
[2018-09-30 10:58:59,275 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:58:59,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states.
[2018-09-30 10:58:59,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113.
[2018-09-30 10:58:59,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states.
[2018-09-30 10:58:59,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions.
[2018-09-30 10:58:59,296 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 110
[2018-09-30 10:58:59,296 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:58:59,296 INFO L480 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions.
[2018-09-30 10:58:59,296 INFO L481 AbstractCegarLoop]: Interpolant automaton has 110 states.
[2018-09-30 10:58:59,296 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions.
[2018-09-30 10:58:59,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113
[2018-09-30 10:58:59,297 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:58:59,297 INFO L375 BasicCegarLoop]: trace histogram [28, 27, 27, 26, 1, 1, 1, 1]
[2018-09-30 10:58:59,297 INFO L423 AbstractCegarLoop]: === Iteration 54 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:58:59,297 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:58:59,297 INFO L82 PathProgramCache]: Analyzing trace with hash -738263347, now seen corresponding path program 52 times
[2018-09-30 10:58:59,297 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:58:59,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:58:59,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:59,298 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:58:59,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:58:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:58:59,596 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 756 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:59,596 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:58:59,596 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:58:59,604 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:58:59,670 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:58:59,670 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:58:59,674 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:58:59,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1458 backedges. 756 proven. 702 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:58:59,919 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:58:59,919 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 30] total 32
[2018-09-30 10:58:59,920 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states
[2018-09-30 10:58:59,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants.
[2018-09-30 10:58:59,920 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:58:59,920 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 33 states.
[2018-09-30 10:59:01,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:01,468 INFO L93 Difference]: Finished difference Result 121 states and 122 transitions.
[2018-09-30 10:59:01,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states.
[2018-09-30 10:59:01,469 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 112
[2018-09-30 10:59:01,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:01,469 INFO L225 Difference]: With dead ends: 121
[2018-09-30 10:59:01,470 INFO L226 Difference]: Without dead ends: 119
[2018-09-30 10:59:01,470 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:01,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states.
[2018-09-30 10:59:01,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 115.
[2018-09-30 10:59:01,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states.
[2018-09-30 10:59:01,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 116 transitions.
[2018-09-30 10:59:01,493 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 116 transitions. Word has length 112
[2018-09-30 10:59:01,493 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:01,493 INFO L480 AbstractCegarLoop]: Abstraction has 115 states and 116 transitions.
[2018-09-30 10:59:01,493 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states.
[2018-09-30 10:59:01,494 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 116 transitions.
[2018-09-30 10:59:01,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115
[2018-09-30 10:59:01,494 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:01,494 INFO L375 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 1, 1, 1, 1]
[2018-09-30 10:59:01,495 INFO L423 AbstractCegarLoop]: === Iteration 55 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:01,495 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:01,495 INFO L82 PathProgramCache]: Analyzing trace with hash -801420281, now seen corresponding path program 53 times
[2018-09-30 10:59:01,495 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:01,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:01,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:01,496 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:01,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:02,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 756 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:02,191 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:02,191 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 10:59:02,201 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:59:02,295 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 28 check-sat command(s)
[2018-09-30 10:59:02,295 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:02,299 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:03,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1512 backedges. 756 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:03,649 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:03,650 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 57] total 113
[2018-09-30 10:59:03,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 114 states
[2018-09-30 10:59:03,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 114 interpolants.
[2018-09-30 10:59:03,651 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:03,651 INFO L87 Difference]: Start difference. First operand 115 states and 116 transitions. Second operand 114 states.
[2018-09-30 10:59:15,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:15,473 INFO L93 Difference]: Finished difference Result 176 states and 178 transitions.
[2018-09-30 10:59:15,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states.
[2018-09-30 10:59:15,473 INFO L78 Accepts]: Start accepts. Automaton has 114 states. Word has length 114
[2018-09-30 10:59:15,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:15,474 INFO L225 Difference]: With dead ends: 176
[2018-09-30 10:59:15,474 INFO L226 Difference]: Without dead ends: 117
[2018-09-30 10:59:15,474 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:15,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states.
[2018-09-30 10:59:15,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117.
[2018-09-30 10:59:15,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states.
[2018-09-30 10:59:15,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 118 transitions.
[2018-09-30 10:59:15,493 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 118 transitions. Word has length 114
[2018-09-30 10:59:15,494 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:15,494 INFO L480 AbstractCegarLoop]: Abstraction has 117 states and 118 transitions.
[2018-09-30 10:59:15,494 INFO L481 AbstractCegarLoop]: Interpolant automaton has 114 states.
[2018-09-30 10:59:15,494 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 118 transitions.
[2018-09-30 10:59:15,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117
[2018-09-30 10:59:15,494 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:15,494 INFO L375 BasicCegarLoop]: trace histogram [29, 28, 28, 27, 1, 1, 1, 1]
[2018-09-30 10:59:15,495 INFO L423 AbstractCegarLoop]: === Iteration 56 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:15,495 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:15,495 INFO L82 PathProgramCache]: Analyzing trace with hash -1280345023, now seen corresponding path program 54 times
[2018-09-30 10:59:15,495 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:15,495 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:15,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:15,495 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:15,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:15,853 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 812 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:15,853 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:15,854 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 10:59:15,861 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 10:59:15,953 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 29 check-sat command(s)
[2018-09-30 10:59:15,954 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:15,958 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:17,146 INFO L134 CoverageAnalysis]: Checked inductivity of 1568 backedges. 812 proven. 756 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:17,184 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:17,185 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 33
[2018-09-30 10:59:17,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states
[2018-09-30 10:59:17,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants.
[2018-09-30 10:59:17,186 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:17,186 INFO L87 Difference]: Start difference. First operand 117 states and 118 transitions. Second operand 34 states.
[2018-09-30 10:59:18,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:18,960 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions.
[2018-09-30 10:59:18,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states.
[2018-09-30 10:59:18,960 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 116
[2018-09-30 10:59:18,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:18,961 INFO L225 Difference]: With dead ends: 125
[2018-09-30 10:59:18,961 INFO L226 Difference]: Without dead ends: 123
[2018-09-30 10:59:18,961 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:18,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states.
[2018-09-30 10:59:18,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 119.
[2018-09-30 10:59:18,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states.
[2018-09-30 10:59:18,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 120 transitions.
[2018-09-30 10:59:18,982 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 120 transitions. Word has length 116
[2018-09-30 10:59:18,982 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:18,982 INFO L480 AbstractCegarLoop]: Abstraction has 119 states and 120 transitions.
[2018-09-30 10:59:18,983 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states.
[2018-09-30 10:59:18,983 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 120 transitions.
[2018-09-30 10:59:18,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119
[2018-09-30 10:59:18,983 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:18,983 INFO L375 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 1, 1, 1, 1]
[2018-09-30 10:59:18,983 INFO L423 AbstractCegarLoop]: === Iteration 57 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:18,984 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:18,984 INFO L82 PathProgramCache]: Analyzing trace with hash -2050868101, now seen corresponding path program 55 times
[2018-09-30 10:59:18,984 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:18,984 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:18,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:18,984 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:18,985 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:19,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:19,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 812 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:19,664 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:19,665 INFO L227 ckRefinementStrategy]: Switched to mode Z3_FP
No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3
Starting monitored process 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 10:59:19,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:59:19,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:19,751 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:21,396 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 812 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:21,417 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:21,417 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [59, 59] total 117
[2018-09-30 10:59:21,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 118 states
[2018-09-30 10:59:21,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 118 interpolants.
[2018-09-30 10:59:21,418 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:21,418 INFO L87 Difference]: Start difference. First operand 119 states and 120 transitions. Second operand 118 states.
[2018-09-30 10:59:33,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:33,045 INFO L93 Difference]: Finished difference Result 182 states and 184 transitions.
[2018-09-30 10:59:33,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states.
[2018-09-30 10:59:33,046 INFO L78 Accepts]: Start accepts. Automaton has 118 states. Word has length 118
[2018-09-30 10:59:33,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:33,046 INFO L225 Difference]: With dead ends: 182
[2018-09-30 10:59:33,046 INFO L226 Difference]: Without dead ends: 121
[2018-09-30 10:59:33,047 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 145 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:33,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states.
[2018-09-30 10:59:33,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121.
[2018-09-30 10:59:33,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states.
[2018-09-30 10:59:33,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions.
[2018-09-30 10:59:33,067 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 118
[2018-09-30 10:59:33,067 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:33,067 INFO L480 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions.
[2018-09-30 10:59:33,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 118 states.
[2018-09-30 10:59:33,067 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions.
[2018-09-30 10:59:33,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121
[2018-09-30 10:59:33,068 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:33,068 INFO L375 BasicCegarLoop]: trace histogram [30, 29, 29, 28, 1, 1, 1, 1]
[2018-09-30 10:59:33,068 INFO L423 AbstractCegarLoop]: === Iteration 58 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:33,068 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:33,068 INFO L82 PathProgramCache]: Analyzing trace with hash 919584693, now seen corresponding path program 56 times
[2018-09-30 10:59:33,068 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:33,068 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:33,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:33,069 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 10:59:33,069 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:33,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:33,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 870 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:33,348 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:33,348 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 10:59:33,359 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1
[2018-09-30 10:59:33,428 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s)
[2018-09-30 10:59:33,428 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:33,431 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:33,797 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 870 proven. 812 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:33,818 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:33,818 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 34
[2018-09-30 10:59:33,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states
[2018-09-30 10:59:33,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants.
[2018-09-30 10:59:33,819 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:33,819 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 35 states.
[2018-09-30 10:59:35,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:35,251 INFO L93 Difference]: Finished difference Result 129 states and 130 transitions.
[2018-09-30 10:59:35,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states.
[2018-09-30 10:59:35,251 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 120
[2018-09-30 10:59:35,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:35,252 INFO L225 Difference]: With dead ends: 129
[2018-09-30 10:59:35,252 INFO L226 Difference]: Without dead ends: 127
[2018-09-30 10:59:35,252 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:35,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states.
[2018-09-30 10:59:35,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 123.
[2018-09-30 10:59:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states.
[2018-09-30 10:59:35,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 124 transitions.
[2018-09-30 10:59:35,273 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 124 transitions. Word has length 120
[2018-09-30 10:59:35,273 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:35,273 INFO L480 AbstractCegarLoop]: Abstraction has 123 states and 124 transitions.
[2018-09-30 10:59:35,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 35 states.
[2018-09-30 10:59:35,273 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 124 transitions.
[2018-09-30 10:59:35,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123
[2018-09-30 10:59:35,273 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:35,274 INFO L375 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 1, 1, 1, 1]
[2018-09-30 10:59:35,274 INFO L423 AbstractCegarLoop]: === Iteration 59 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:35,274 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:35,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1042320657, now seen corresponding path program 57 times
[2018-09-30 10:59:35,274 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:35,274 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:35,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:35,275 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:35,275 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 870 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:36,158 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:36,158 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 10:59:36,165 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2
[2018-09-30 10:59:36,315 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s)
[2018-09-30 10:59:36,315 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:36,319 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 1740 backedges. 870 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:37,807 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:37,807 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 61] total 121
[2018-09-30 10:59:37,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 122 states
[2018-09-30 10:59:37,808 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants.
[2018-09-30 10:59:37,808 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:37,808 INFO L87 Difference]: Start difference. First operand 123 states and 124 transitions. Second operand 122 states.
[2018-09-30 10:59:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:50,941 INFO L93 Difference]: Finished difference Result 188 states and 190 transitions.
[2018-09-30 10:59:50,941 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states.
[2018-09-30 10:59:50,941 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 122
[2018-09-30 10:59:50,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:50,942 INFO L225 Difference]: With dead ends: 188
[2018-09-30 10:59:50,942 INFO L226 Difference]: Without dead ends: 125
[2018-09-30 10:59:50,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:50,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states.
[2018-09-30 10:59:50,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125.
[2018-09-30 10:59:50,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states.
[2018-09-30 10:59:50,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 126 transitions.
[2018-09-30 10:59:50,971 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 126 transitions. Word has length 122
[2018-09-30 10:59:50,971 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:50,971 INFO L480 AbstractCegarLoop]: Abstraction has 125 states and 126 transitions.
[2018-09-30 10:59:50,971 INFO L481 AbstractCegarLoop]: Interpolant automaton has 122 states.
[2018-09-30 10:59:50,972 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 126 transitions.
[2018-09-30 10:59:50,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125
[2018-09-30 10:59:50,972 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:50,972 INFO L375 BasicCegarLoop]: trace histogram [31, 30, 30, 29, 1, 1, 1, 1]
[2018-09-30 10:59:50,973 INFO L423 AbstractCegarLoop]: === Iteration 60 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:50,973 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:50,973 INFO L82 PathProgramCache]: Analyzing trace with hash 1571080489, now seen corresponding path program 58 times
[2018-09-30 10:59:50,973 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:50,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:50,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:50,974 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:50,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:51,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 930 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:51,457 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:51,457 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 10:59:51,466 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST
[2018-09-30 10:59:51,546 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s)
[2018-09-30 10:59:51,547 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:51,550 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 930 proven. 870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:51,770 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:51,770 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 35
[2018-09-30 10:59:51,770 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states
[2018-09-30 10:59:51,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants.
[2018-09-30 10:59:51,770 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:51,770 INFO L87 Difference]: Start difference. First operand 125 states and 126 transitions. Second operand 36 states.
[2018-09-30 10:59:53,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 10:59:53,076 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions.
[2018-09-30 10:59:53,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states.
[2018-09-30 10:59:53,077 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 124
[2018-09-30 10:59:53,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 10:59:53,077 INFO L225 Difference]: With dead ends: 133
[2018-09-30 10:59:53,078 INFO L226 Difference]: Without dead ends: 131
[2018-09-30 10:59:53,078 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 10:59:53,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states.
[2018-09-30 10:59:53,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 127.
[2018-09-30 10:59:53,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states.
[2018-09-30 10:59:53,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 128 transitions.
[2018-09-30 10:59:53,102 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 128 transitions. Word has length 124
[2018-09-30 10:59:53,102 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 10:59:53,102 INFO L480 AbstractCegarLoop]: Abstraction has 127 states and 128 transitions.
[2018-09-30 10:59:53,102 INFO L481 AbstractCegarLoop]: Interpolant automaton has 36 states.
[2018-09-30 10:59:53,102 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 128 transitions.
[2018-09-30 10:59:53,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127
[2018-09-30 10:59:53,103 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 10:59:53,103 INFO L375 BasicCegarLoop]: trace histogram [31, 31, 30, 30, 1, 1, 1, 1]
[2018-09-30 10:59:53,103 INFO L423 AbstractCegarLoop]: === Iteration 61 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 10:59:53,103 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 10:59:53,103 INFO L82 PathProgramCache]: Analyzing trace with hash -2020085917, now seen corresponding path program 59 times
[2018-09-30 10:59:53,103 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 10:59:53,103 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 10:59:53,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:53,104 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 10:59:53,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 10:59:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 10:59:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 930 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:53,819 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 10:59:53,819 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 10:59:53,826 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1
[2018-09-30 10:59:53,931 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 31 check-sat command(s)
[2018-09-30 10:59:53,931 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 10:59:53,935 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 10:59:55,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1860 backedges. 930 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 10:59:55,591 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 10:59:55,591 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [63, 63] total 125
[2018-09-30 10:59:55,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 126 states
[2018-09-30 10:59:55,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 126 interpolants.
[2018-09-30 10:59:55,592 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 10:59:55,593 INFO L87 Difference]: Start difference. First operand 127 states and 128 transitions. Second operand 126 states.
[2018-09-30 11:00:06,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:00:06,331 INFO L93 Difference]: Finished difference Result 194 states and 196 transitions.
[2018-09-30 11:00:06,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states.
[2018-09-30 11:00:06,332 INFO L78 Accepts]: Start accepts. Automaton has 126 states. Word has length 126
[2018-09-30 11:00:06,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:00:06,332 INFO L225 Difference]: With dead ends: 194
[2018-09-30 11:00:06,332 INFO L226 Difference]: Without dead ends: 129
[2018-09-30 11:00:06,332 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:00:06,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states.
[2018-09-30 11:00:06,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 129.
[2018-09-30 11:00:06,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states.
[2018-09-30 11:00:06,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions.
[2018-09-30 11:00:06,352 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 126
[2018-09-30 11:00:06,352 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:00:06,352 INFO L480 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions.
[2018-09-30 11:00:06,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 126 states.
[2018-09-30 11:00:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions.
[2018-09-30 11:00:06,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129
[2018-09-30 11:00:06,353 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:00:06,353 INFO L375 BasicCegarLoop]: trace histogram [32, 31, 31, 30, 1, 1, 1, 1]
[2018-09-30 11:00:06,353 INFO L423 AbstractCegarLoop]: === Iteration 62 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:00:06,353 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:00:06,353 INFO L82 PathProgramCache]: Analyzing trace with hash 2012453021, now seen corresponding path program 60 times
[2018-09-30 11:00:06,353 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:00:06,354 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:00:06,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:06,354 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:00:06,354 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 992 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:06,941 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:00:06,941 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 11:00:06,950 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE
[2018-09-30 11:00:07,059 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 32 check-sat command(s)
[2018-09-30 11:00:07,059 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat
[2018-09-30 11:00:07,062 INFO L273 TraceCheckSpWp]: Computing forward predicates...
[2018-09-30 11:00:07,272 INFO L134 CoverageAnalysis]: Checked inductivity of 1922 backedges. 992 proven. 930 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:07,293 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences.
[2018-09-30 11:00:07,293 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 34] total 36
[2018-09-30 11:00:07,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states
[2018-09-30 11:00:07,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants.
[2018-09-30 11:00:07,294 INFO L146 InterpolantAutomaton]: No coverage relation statistics for PredicateCoverageChecker
[2018-09-30 11:00:07,294 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 37 states.
[2018-09-30 11:00:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization.
[2018-09-30 11:00:08,844 INFO L93 Difference]: Finished difference Result 137 states and 138 transitions.
[2018-09-30 11:00:08,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states.
[2018-09-30 11:00:08,845 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 128
[2018-09-30 11:00:08,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted.
[2018-09-30 11:00:08,846 INFO L225 Difference]: With dead ends: 137
[2018-09-30 11:00:08,846 INFO L226 Difference]: Without dead ends: 135
[2018-09-30 11:00:08,846 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time
[2018-09-30 11:00:08,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states.
[2018-09-30 11:00:08,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 131.
[2018-09-30 11:00:08,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states.
[2018-09-30 11:00:08,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 132 transitions.
[2018-09-30 11:00:08,872 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 132 transitions. Word has length 128
[2018-09-30 11:00:08,872 INFO L84 Accepts]: Finished accepts. word is rejected.
[2018-09-30 11:00:08,872 INFO L480 AbstractCegarLoop]: Abstraction has 131 states and 132 transitions.
[2018-09-30 11:00:08,872 INFO L481 AbstractCegarLoop]: Interpolant automaton has 37 states.
[2018-09-30 11:00:08,872 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 132 transitions.
[2018-09-30 11:00:08,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131
[2018-09-30 11:00:08,873 INFO L367 BasicCegarLoop]: Found error trace
[2018-09-30 11:00:08,873 INFO L375 BasicCegarLoop]: trace histogram [32, 32, 31, 31, 1, 1, 1, 1]
[2018-09-30 11:00:08,873 INFO L423 AbstractCegarLoop]: === Iteration 63 === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT]===
[2018-09-30 11:00:08,873 INFO L99 BPredicateUnifier]: Initialized predicate-trie based predicate unifier
[2018-09-30 11:00:08,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1232122327, now seen corresponding path program 61 times
[2018-09-30 11:00:08,874 INFO L227 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS
[2018-09-30 11:00:08,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy
[2018-09-30 11:00:08,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:08,874 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY
[2018-09-30 11:00:08,874 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY
[2018-09-30 11:00:08,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:09,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1984 backedges. 992 proven. 992 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2018-09-30 11:00:09,731 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more.
[2018-09-30 11:00:09,731 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 11:00:09,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2018-09-30 11:00:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat
[2018-09-30 11:00:09,823 INFO L273 TraceCheckSpWp]: Computing forward predicates...
Received shutdown request...
[2018-09-30 11:00:10,907 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants
[2018-09-30 11:00:11,108 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 62 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000
[2018-09-30 11:00:11,109 WARN L549 AbstractCegarLoop]: Verification canceled
[2018-09-30 11:00:11,114 WARN L206 ceAbstractionStarter]: Timeout
[2018-09-30 11:00:11,115 INFO L202 PluginConnector]: Adding new model seq.i_4.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.09 11:00:11 BoogieIcfgContainer
[2018-09-30 11:00:11,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction----------------------------
[2018-09-30 11:00:11,116 INFO L168 Benchmark]: Toolchain (without parser) took 241670.78 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -195.0 MB). Free memory was 1.5 GB in the beginning and 931.7 MB in the end (delta: 544.9 MB). Peak memory consumption was 349.9 MB. Max. memory is 7.1 GB.
[2018-09-30 11:00:11,117 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.18 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 11:00:11,118 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.73 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 11:00:11,118 INFO L168 Benchmark]: Boogie Preprocessor took 20.15 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 11:00:11,119 INFO L168 Benchmark]: RCFGBuilder took 398.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB.
[2018-09-30 11:00:11,120 INFO L168 Benchmark]: TraceAbstraction took 241207.58 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -195.0 MB). Free memory was 1.5 GB in the beginning and 931.7 MB in the end (delta: 523.8 MB). Peak memory consumption was 328.8 MB. Max. memory is 7.1 GB.
[2018-09-30 11:00:11,123 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 0.18 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 39.73 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 20.15 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 398.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.5 GB in the beginning and 1.5 GB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB.
* TraceAbstraction took 241207.58 ms. Allocated memory was 1.5 GB in the beginning and 1.4 GB in the end (delta: -195.0 MB). Free memory was 1.5 GB in the beginning and 931.7 MB in the end (delta: 523.8 MB). Peak memory consumption was 328.8 MB. Max. memory is 7.1 GB.
* Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction:
- TimeoutResultAtElement [Line: 80]: Timeout (TraceAbstraction)
Unable to prove that assertion always holds (line 80). Cancelled while BasicCegarLoop was analyzing trace of length 131 with TraceHistMax 32, while TraceCheckSpWp was constructing forward predicates, while XnfDer was eliminating 1 quantified variables from 2 xjuncts.
- StatisticsResult: Ultimate Automizer benchmark data
CFG has 1 procedures, 9 locations, 1 error locations. TIMEOUT Result, 241.1s OverallTime, 63 OverallIterations, 32 TraceHistogramMax, 173.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 777 SDtfs, 579 SDslu, 4275 SDs, 0 SdLazy, 36691 SolverSat, 2350 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 43.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7210 GetRequests, 3587 SyntacticMatches, 0 SemanticMatches, 3623 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=131occurred in iteration=62, 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: 0.7s AutomataMinimizationTime, 62 MinimizatonAttempts, 124 StatesRemovedByMinimization, 31 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.6s SsaConstructionTime, 3.2s SatisfiabilityAnalysisTime, 57.7s InterpolantComputationTime, 8294 NumberOfCodeBlocks, 8294 NumberOfCodeBlocksAsserted, 637 NumberOfCheckSat, 8172 ConstructedInterpolants, 0 QuantifiedInterpolants, 3498148 SizeOfPredicates, 240 NumberOfNonLiveVariables, 16800 ConjunctsInSsa, 2280 ConjunctsInUnsatCore, 122 InterpolantComputations, 2 PerfectInterpolantSequences, 41662/81342 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/seq.i_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-Benchmark-0-2018-09-30_11-00-11-134.csv
Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/seq.i_4.bpl_svcomp-Reach-32bit-Automizer_Default_PUPT.epf_AutomizerBplInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-30_11-00-11-134.csv
Completed graceful shutdown